He is very serious and professional, exactly the type of person I would want machining the parts to my engine.
@charlesseymour1482
4 жыл бұрын
Great detail you never see. Trueing the stone with radius check, golden.
@blipco5
4 жыл бұрын
Charles Seymour ...Yeah, that was amazing. You should see my bench grinder, LOL. 😩
@birdwing98
3 жыл бұрын
Yes, to STEP By STEP videos. Very Educational. Wow, these guys at Airworks are Professionals!
@dannymiller1594
Жыл бұрын
I agree. I'm an aerospace engineer and an A&P. I love this stuff! Keep it up.
@raymondjones7489
4 жыл бұрын
Now I know...always wondered how rod journals were ground...I like it!
@mattlarson3795
4 жыл бұрын
Interesting stuff......These guys are old school integrity. Hopefully they get into Lycoming exp even more.
@richb1334
Жыл бұрын
I did this in pass when I first started working you guys do a nice job and explain the steps
@joesparky1
4 жыл бұрын
Details, more details!
@ExperimentalAircraftChannel
4 жыл бұрын
@Joe Freeman YES! I here you! Thank you for the feedback. I really appreciate it.
@klesmer
4 жыл бұрын
American craftmanship is not dead! It it on display at thousands of small shops all across the country.
@airworxaviation9230
4 жыл бұрын
American craftsmanship is alive and well in our shop. We love what we do and love the results that we produce.
@FISHH00KS
4 жыл бұрын
You've hit the nail on the head. Instructional videos need a logical order. The Army perfected this technique in 1943 to teach everyone in the most efficient manner Explanation Demonstration Practical Application I feel like I was properly trained to "do the job" and For this reason, I'm subscribing and I hope all the instructional videos are all like this.
@blipco5
4 жыл бұрын
Who knew a grinding stone could be such a precise tool? Not me but I know now. Thanks.
@KPMACHINE1
4 жыл бұрын
Don’t have a plane yet, but when I do and when it needs an engine I am sending it to them! Super impressed!
@barrysheridan9186
4 жыл бұрын
Very interesting thanks, often wondered how they ground a crankshaft.
@wandererinadistantland
3 жыл бұрын
My words exactly!
@jeremysteiner838
4 жыл бұрын
A full engine overhaul series please
@ctsteve1967
4 жыл бұрын
on what engine.
@bernardc2553
4 жыл бұрын
I'd like a Lyc maybe older 0-540 A1 or C or maybe 0-470..just because alot still around
@ExperimentalAircraftChannel
4 жыл бұрын
@Greg Plaka....thanks for watching. You do not work for Airworx. Where are you based and what do you do? Any special projects going on?
@ExperimentalAircraftChannel
4 жыл бұрын
@Jeremy Steiner Thank you for the feedback. Airworx works on Lycoming, Continental and Franklin. Specializes on Franklin. We just agreed upon a sponsorship with Airworx as I am REALLY impressed with what and how they do work there. I only want to work with "brands" that I truly believe in their product or services and these guys really hit the mark. So I will be spending a good amount of time with them this year to make content to educate everyone on the different processes involved in OVERHAULING an Aircraft Engine and some fun stuff ahead once the Engine Dyno is up and running. I personally can't wait for that! Very Very SOON!
@ExperimentalAircraftChannel
4 жыл бұрын
@@bernardc2553 It all depends on what "shows up" in the shop to be worked on. I'll try to have Chris take note to notify me when some of these arrive and capture the process. Thanks for the suggestions and the support here. I really appreciate you.
@fw1421
4 жыл бұрын
I’ve always wanted to understand how they machine crankshafts. Thanks guys,this is very informative.👍🏻👍🏻👍🏻
@MrBarbuster
4 жыл бұрын
love these kind of videos thankyou
@ExperimentalAircraftChannel
4 жыл бұрын
@m kramer Hey THANK YOU for your feedback and support. I appreciate you taking the time to watch!
@joelrodriguez6840
4 жыл бұрын
I do enjoy the step by step
@Joe_Not_A_Fed
3 жыл бұрын
I love this geeky stuff. Thanks.
@airgliderz
3 жыл бұрын
... Another cool tool I need in my garage for Christmas..a crank shaft grinder... .
@geraldthompson2173
2 жыл бұрын
Love this type of content!
@stevenflattum156
4 жыл бұрын
I love this super fascinating!
@ExperimentalAircraftChannel
4 жыл бұрын
@Steve Flattum Thank you! I appreciate your supportive feedback. Thanks for watching!
@jeffdiamond3900
4 жыл бұрын
i use to grind industrial shafts on a lemco. talk about prehistoric. then i did automotive shafts on a berco. a little nicer of machine. we need more of vids like this so people understand the work that is done.
@lorinmiller1682
3 жыл бұрын
Cool to watch the detail on this.
@John-nc4bl
Жыл бұрын
There is a very slight .004 thou bow in that cranshaft as you can see the needle on the dial indicator moving and also the uneven quantity of grinding sparks shooting down from the grinding contact area. I bet when that crankshaft is in service for a while in the engine that uneven bearing shell wear would be evident across the saddle bearings if the engine was disassembled.
@walterthorne4819
4 жыл бұрын
Well presented! Thanks
@weofnjieofing
3 жыл бұрын
Amazing detail and precision. Better than factory quality. I'm sure their engines last a very long time and are super reliable. Just want to buy one knowing the impeccable detail that's gone into them!!
@chuckbeyer6679
2 жыл бұрын
Nice job, I enjoyed it!
@crisjpalmer
3 жыл бұрын
Awesome video, really enjoyed watching the fine details involved in this process.
@thunderbirdone8126
2 жыл бұрын
The diamond should be turned a quarter turn to prevent the diamond from getting polished on one side which polishes the wheel instead of sharpening it. A freshly rotated diamond edge fractures the wheel grains creating new cooler cutting points on each grain.
@fransmare
4 жыл бұрын
Great to see what goes into overhauling a crank
@ctsteve1967
4 жыл бұрын
that is called a re grind
@ExperimentalAircraftChannel
4 жыл бұрын
@fransmare Thank you for engaging here and giving some feedback! Thanks for watching!
@SmittySmithsonite
4 жыл бұрын
Great video! Love the step-by-step procedure. I've always wondered how any rod journal got centered, and turned. Thanks for the coupon code for those Grip Lock Ties! Those are slick! Just ordered a 100-pack for the shop. 👍😎
@ExperimentalAircraftChannel
4 жыл бұрын
@Smitty Smithsonite Hey! Thank you for commenting here and being so supportive. Your welcome on the Coupon Code. I think that is one of the simplest yet coolest products to come out recently and I am behind them 100% for getting a strong hold of the market for these style fasteners etc. So many different applications I personally have found for them outside of Aviation as well. Thanks for watching!
@beachboardfan9544
4 жыл бұрын
Hell yea, never too much detail! 👍
@GeneralChangFromDanang
4 жыл бұрын
Can't say I'd be real comfortable standing in the line of fire of that big grinding wheel.
@josephmufdi4564
2 жыл бұрын
Awesome! Love learning the step by step process.
@davejohnson7678
4 жыл бұрын
i like the precision!
@begone30
4 жыл бұрын
To many pop in just let the video play. Do your pop in at be beginning or the end. Not ever 3 to 5 minutes. Just my 2 cent
@ExperimentalAircraftChannel
4 жыл бұрын
@begone30 Thank You for your input. YES...trying a few things different these days to break it up a but and also add some explanations where needed. Thank You for taking the time to watch and support here!
@danielyoungman9206
4 жыл бұрын
@@ExperimentalAircraftChannel NO i think the pop ins are good explaining things is good
@phillybaf
4 жыл бұрын
Experimental Aircraft Channel you didn’t explain anything but your bullshit.
@TheDirtflyer
4 жыл бұрын
Very informative Video, very educational in all the work that goes into getting a Crankshaft back in service the right way.
@caseyshull4637
4 жыл бұрын
Hey Brian, I really appreciate the "Airworx" videos.I am very impressed with the ability and attention to detail. A little information about me. I am pursuing my Private pilot with an expected check ride this summer 2020. I have a B.S. in Mechanical Engineering Technology, an M.S. in Industrial Technology, PhD in TLI with a cognate in Systems Engineering all from Purdue University and an MBA from Anderson University. However, I am not a professor but work in industry and very enthusiastic about flying and adding 'aviation' knowledge. I plan to purchase a Piper Tri-Pacer this summer and then pursue building an experimental aircraft. I really appreciate your videos detailing the hands on aspect of our hobby. I would like to visit and / or discuss more details with Airworx and the opinion they have regarding the various manufacturers. In addition, I would like to see more videos with a subject of experimental aircraft kits. I have narrowed my decision of an aircraft kit to 3 manufacturers, based upon various videos, and would like to see more information from builders, manufactures and engines associated with kits. Specifically, do you have any information regarding the UL Power and the opinion of the experts at Airworx regarding UL Power and the OEM, or more common, aircraft engine manufacturers. I really appreciate the thoroughness of the staff at Airoworx and value their opinion about various manufacturers and plan to focus my decisions upon the 'hands-on' opinions of experts in the industry. Please keep up the good work with your video channel, Casey Shull, PhD
@ExperimentalAircraftChannel
4 жыл бұрын
Casey... Thank You very much for the feedback and being a positive supporter of what I am trying to accomplish here. Congratulations on going after getting your Pilots License. That is an Adventure itself. And then diving into aircraft ownership and then building. EXCELLENT! I have a whole list of builders to visit (once travel makes sense again) and will showcase them and their builds here of course. Regarding engines. Airworx niche is more of the Lycoming, Continental and the specializes in the Franklin brand of engines. UL Power and other are more of the Light Sport/Experimental world. I am working on putting together an engine series to give more details about all the options available to you in the coming months. So stay tuned! :-)
@marccretten
4 жыл бұрын
love stuff like this.
@ExperimentalAircraftChannel
4 жыл бұрын
@Mark Cretten Thanks! Thanks for watching. I really appreciate you!
@kooldoozer
4 жыл бұрын
After dressing the grinding wheel, by the sound that is made as the wheel engages the work, you can hear un-even contact. I do not believe the wheel is dressed enough, and is out of round. The wheel could also have moved in the blotters between the flanges during across-the-mains starting. I use variable frequency drives to soft-start the wheels on all my grinders to avid any potential of wheel slipping in the blotters during startup. Another note, in the camera shot of the wheel storage rack, it is plain to see the metal buildup in the pores of the wheels. I realize you re-dress the wheels before using them, but I just get the feeling the operator is not dressing the wheels enough to clean them out and also get them round. Just an observation, because the science of grinding means controlling all the variables. I do understand that these wheels are tight-bond wheels because they are holding the form radii, and are not going to break down. This makes deep dressing to remove buildup even more important.
@christophertroy3340
3 жыл бұрын
I do crankshaft balancing for automotive applications and have always wondered about how it's done in the aviation industry. I would love to see you do a video with Airworx on how they balance the crankshafts that come through their shop. I would also like to know the process of becoming certified to do it, as I'm the aviation industry in my area is quite busy. The details in this video are astounding. Please do one on balancing the crankshaft!
@PatrickJWenzel
4 жыл бұрын
Really well done.
@agpilot782
4 жыл бұрын
great video...
@Erik-rp1hi
4 жыл бұрын
yes, please more detailed look at processes.
@TimothyCarswell
4 жыл бұрын
I love the details! Keep em coming!
@randallharmsen5802
4 жыл бұрын
Much respect for the fellow grinding the crankshaft. Being a machinist myself that has ground the outside diameter of shafts 4” x 84” within ..0002” . Not an easy deal. I wonder if the crankshaft gets rebalanced after grinding? Since taking material off. Would be a minimum amount of weight.
@ctsteve1967
4 жыл бұрын
I think the crank is balanced from the factory
@ExperimentalAircraftChannel
4 жыл бұрын
@Randall Harmsen Thank you for taking the time to watch and also engage here! I really appreciate you. I honestly don'e know about the rebalancing. Something maybe Chris @Airworx hopefully can comment back on here.
@randallharmsen5802
4 жыл бұрын
Experimental Aircraft Channel, I think it wouldn’t be a problem with the balance of the crankshaft. Talking a gram of weight or less. Do you know if the crankshaft is forged steel or iron casting? Would believe steel forged myself.
@rolandtamaccio3285
4 жыл бұрын
,,, the weight that is ground off the shaft, is made up, close enough, by the necessary thicker undersize bearing . I'm sure just about all aircraft cranks are steel, and most brought to near net shape by forging .
@davidcrouch5190
4 жыл бұрын
Cool machine shop!
@ctsteve1967
4 жыл бұрын
if you say so
@ExperimentalAircraftChannel
4 жыл бұрын
@David Crouch YES! I was most impressed as well! They have what is seems to be every "RIGHT TOOL (or machine) for the RIGHT JOB" and they also do most everything in house instead of shipping out to 3rd parties (except for Nitrating I believe).
@tedfarwell9812
4 жыл бұрын
Great content, thanks for posting.
@gtr1952
4 жыл бұрын
Very interesting to see the way he jigged that up and the care taken to resurface the wheel for every unit!! Sorry, don't do Facebook.... Thanks for the video!!
@waynetokarz174
4 жыл бұрын
Totally awesome vid! More please!
@jamesretired5979
4 жыл бұрын
Love it
@ExperimentalAircraftChannel
4 жыл бұрын
@James E. Wagner JR Thank you! I really appreciate the positive feedback! Thanks for watching!
@equaltothetaskaviation6440
4 жыл бұрын
very intresting & love the channel - great work
@ianherdis7438
4 жыл бұрын
Great video. Interested in how a hollow crank is checked. How the bore is inspected and machined out if required.
@ExperimentalAircraftChannel
4 жыл бұрын
@Iam Herdis. Thank you for your comment. That is a great question. I have no idea. I will ask Chris at Airworx to try and comment back here. Thank you for watching!
@airworxaviation9230
4 жыл бұрын
Several methods are used including visual, MPI, and eddy current inspections.
@cruizgonzalez5004
4 жыл бұрын
Very nice job!!
@michaelallen1396
4 жыл бұрын
Very interesting, stuff you'd never see.
@machinesandthings7121
4 жыл бұрын
GREAT VID! Yes I'm yelling while saying that😃
@willware4490
4 жыл бұрын
Great job! Can't wait to get my Franklin 150 to AirWorx, kinda scared if the crank will pass though, already -.020
@ctsteve1967
4 жыл бұрын
-.030 ok the deeper the cut the cooler the oil is. Less surface area on the crank check out NASCAR Engines
@ExperimentalAircraftChannel
4 жыл бұрын
@Will Ware Hey! I am seeing you pop up everywhere all of a sudden. I think I know who you are now... I think. :-) Thanks for taking the time to watch and also being so supportive. I really appreciate you!
@willware4490
4 жыл бұрын
Yeah, I helped Chris with his new website, so we are bothers in arms helping AirWorx
@maximolopezsr9399
Жыл бұрын
Note Aircraft and Automobil Engine when you are Grinding any Crankshaft you Must do the same proccedure,,but Aircraft engine Crankshaft, will move on you if you do not support the center of the Crankshaft
@joelwyttenbach2772
4 жыл бұрын
Yeah nice job!
@TakeDeadAim
4 жыл бұрын
Although I have about 30 cranks to turn next week(in addition to a 455 Olds, 383 Dodge and a couple of LS's to build up)...I still like seeing how other shops/machines do things at times. Personally, I polish all journals with a "band" hand held polisher after the grind but everyone has their own method. Curious how much they add to the price because it's aviation specific...
@airworxaviation9230
4 жыл бұрын
We polish after the nitriding process because the part actually grows .0003. We use a stand alone polisher using a micro-polishing belt. Much more expensive than automotive because of several extra processes. MPI, shot peen, cad plate, nitriding etc.
@1607rosie
4 жыл бұрын
Pretty neat I didn't realize the amount of work it takes to turn a crankshaft! I assume your going to ten under or twenty if you put it on the grinder.
@airworxaviation9230
4 жыл бұрын
It all depends on which crankshaft is being done. Franklins go .010-.020, Lycoming .003-.006-.010
@1607rosie
4 жыл бұрын
Wow, that's interesting. Glad to see such craftsmanship!
@earlpreston1043
4 жыл бұрын
How about a video explaining the purpose and role of the crankshaft counter weights?
@destro513
4 жыл бұрын
I'm gonna need to see their license for that guys guns.
@pasbogdan
4 жыл бұрын
If manufacturer allows 7 thou runout,what is the bearing to crank clearance allowed?Considering fix ends and 7 thou runout in the middle,bearing to crank clearance should be? Is that a 7 thou or a 7 tenth of a thou?
@kooldoozer
4 жыл бұрын
At 16:30 he says, "This crankshaft has one thousandth run-out, the book allows for seven thousandths run-out." There is no way in heck that any one, any where, any time, would allow for seven thousandths run-out. Seven tenths of a thousandth, I would believe, but in which case he is using much too course of an indicator. Something does not add up here. I know aviation engines have different tolerances than automotive engines, but I got to believe that if any engine engine had seven thousandths of run-out, that it would lock up like a cement truck stuck in a traffic jamb!
@johnsherman7289
3 жыл бұрын
How does this differ from any other crank grind?
@actorzone856
4 жыл бұрын
Do you have to re-harden the crankshaft after grinding and reasons? ie nitriding.
@thepurplepawnee9411
4 жыл бұрын
After a crank is ground, is it nitrided?
@Mr_Meowingtons
3 жыл бұрын
legit the same with they do any car engine..
@bernardc2553
4 жыл бұрын
Do they re nitrate the heavier cut grinds,any cam profile re-grinds? Wanting to do some A/C eng.builds built many Nitro/Alky floppers good content
@ctsteve1967
4 жыл бұрын
we love nitrate
@bernardc2553
4 жыл бұрын
@@ctsteve1967 Nice work, Shop/you get your Dyno up & running?
@ExperimentalAircraftChannel
4 жыл бұрын
@Bernard C from what I understand after this grind back to spec it is sent out to nitrate which then makes the journal just slightly bigger then they "polish" it back down to where it was.... in spec. Thanks for taking the time to watch today! I appreciate you.
@bernardc2553
2 жыл бұрын
@@ExperimentalAircraftChannel How I missed your reply shows you've stood the test of time lol Excellent!
@gerdawhite6012
4 жыл бұрын
You want a "comment" ? I'll give you a fucking comment. That was fucking awesome !!! Dude ! That filled-in all the mental image gaps. So how did they grind the rod journals BEFORE that machine was invented ?
@ExperimentalAircraftChannel
4 жыл бұрын
@Gerda White I think I would normally "Sensor" such comments...but I got such a laugh out of this I will let this slide by for now. Hah! (But for future please realize I make content sort of "Rated "E" for Everyone" which means I hope that families and young aspiring kids will watch this content to be inspired to get into aviation). That said. THANK YOU very much for being so passionate in your reply and being supportive of what I am doing here. PLEASE stay tuned as I will return again and again to capture the different processes and procedures that go into Building/Rebuilding these engines. Thank You again. I really appreciate you!
@gerdawhite6012
4 жыл бұрын
@@ExperimentalAircraftChannel - I know man, and I'm truly sorry for my fowl language. But I had just watched a Lewis Black "rant" video before clicking on yours and couldn't help myself. And you DID tell me to leave you a comment. Thanks for taking your share of the blame. As you are no doubt aware...we don't get to see that very much these days... Thank you for all your work. You're doing a great job. Please note: my comment was really just for you; if you feel it needs to come down....that won't hurt my feelings at all.
@ExperimentalAircraftChannel
4 жыл бұрын
@@gerdawhite6012 Noting but love for you here Gerda White. Thank you for your support.
@nhzxboi
4 жыл бұрын
Hubba a dubba diidly doo. Not the same as the Van Norman grinder I used to run but damned similar. Integrated belt polisher?
@dougwebb6193
4 жыл бұрын
I am surprised that a rebuild can be done at 20k or so after seeing that equipment. I was stressing just thinking of the overhead!
@ExperimentalAircraftChannel
4 жыл бұрын
Also very quality minded people there. This isn't just a paycheck... it is pride of craft. I will be working with Airworx for future engine work personally based on the quality and attention to detail I have seen there. Most impressive.
@3DFLYLOW
4 жыл бұрын
👍
@Ryanbaggarly
6 ай бұрын
Hey what do people get paid to do this job????? Bc i think im seriously underpaid
@guyconnell2250
4 жыл бұрын
How do you get the crankshaft chucked up so that it is perfectly square with the world?
@W1ldTangent
4 жыл бұрын
Patience. Lots of.
@joycethomas8868
4 жыл бұрын
Who builds this machine, Where? How do you grind the rod journals, being offset as they are? Do you dress wheel every crank? Do you just grind to cleanup, or take them all down to same size so new bearings are all same size? Thanks, nice video.
@airworxaviation9230
4 жыл бұрын
This is an AMC machine manufactured in Denmark. We dress and radius the stone for each crankshaft we grind.
@joycethomas8868
4 жыл бұрын
Airworx Aviation nice work. Thanks
@WickedTRX
4 жыл бұрын
how do you center on a damage journal?
@airworxaviation9230
4 жыл бұрын
You can center on the undamaged part of the journal but as long as it is round you can center. You are centering relative to centerline which is easy to accomplish with the correct tooling.
@joewoodchuck3824
4 жыл бұрын
I wonder if with modern metallurgy of the 21st century it would be possible to up the aircraft TBO interval. Automotive engines last so much longer than they did just 40 years ago or less due to such improvements, so wouldn't it be reasonable to upgrade aircraft major internal components to today's standards?
@airworxaviation9230
4 жыл бұрын
We are actually working on Billet crankshafts for some of the Franklin engines. The problem is the certification process it takes in order to get them approved by the FAA.
@joewoodchuck3824
4 жыл бұрын
@@airworxaviation9230 I assumed there were regulations. That shouldn't be a complete barrier though.
@MrSorin1959
4 жыл бұрын
We are making exactly so in Romania.
@ExperimentalAircraftChannel
4 жыл бұрын
Awesome! Thanks for watching.
@tomcoryell
4 жыл бұрын
Sorin Macinic Cheers to Romania!
@MrSorin1959
4 жыл бұрын
@@tomcoryell Thanks, the same to you . Sorin www.deroaviation.ro
@MrSorin1959
4 жыл бұрын
@@tomcoryell Hi, can you recommend me a company in USA for chroming and overhaul Lycominng and Continental cylinders? Thanks, Best Regards. Sorin www.deroaviation.ro
@ctsteve1967
4 жыл бұрын
This is a Rd Grind for a 2700 RPM engine. Shops we use Grind for engines to 10,000 Rpm. guess what They are Ground the same. What is the difference ? anyone And the guys that re grind are never held responsible for there work. You roll the dice and take your Chances That is just the way it is. Big Question HOW MUCH DO THEY CHARGE for a Re Grind.
@ExperimentalAircraftChannel
4 жыл бұрын
@Greg Plaka I have no clue. Interesting question. What type of engine are you building and having these shops to these grinds for you. I am learning about this as I capture it to share to everyone. Happy to dig deeper and inquire.
@dalmatiangirl61
4 жыл бұрын
The chinese crank grinding machine sounds like it has a bad bearing already........
@tordengstrom5643
4 жыл бұрын
AMC = Aarhus Machine Company. a Danish company making engine rebuilding eq. AMC-Schou has been around long time and still is in business.
@airworxaviation9230
4 жыл бұрын
No bad bearings in our machine. You are hearing the coolant pump and the coolant running against the wheel of the machine. This is a Danish built AMC machine that holds extremely close tolerances.
@nhzxboi
4 жыл бұрын
Wear gloves! That fluid will give you hiney cancer! If found that(CS grinds) to be one of the most boring jobs I've ever had.
@wiley0714
4 жыл бұрын
:Why. Why grind metal off the shaft? Does the heat cause it to warp? Obviously, the metal is not growing? Ask's the novice.
@ExperimentalAircraftChannel
4 жыл бұрын
2020 is the ...YEAR to SUBSCRIBE. You have been watching... now it's time to SUBSCRIBE and hit the LIKE button while you are at it! :-) We will keep going back to AIRWORX LLC from time-to-time to capture the step-by-step details of how each component of an Aircraft Engine is properly overhauled. Thank you for taking the time to watch! We REALLY appreciate your support! Consider supporting us on our NEW Patreon Page: www.patreon.com/experimentalaircraftchannel
@ctsteve1967
4 жыл бұрын
The Grinder is good. But looks like a lot of Crank Grinders, I see no special deal here. If i am wrong let me know
@ExperimentalAircraftChannel
4 жыл бұрын
@Greg Plaka.... "I see no special deal here" what exactly is SPECIAL or ISN'T SPECIAL about this? I don't think I understand your tone nor question. The point of this episode is simply to let it be known to others how a Crankshaft is "Reground" or "Serviced" to be useable again. Maybe if someone is already in the industry this is completely "old news" and nothing special. But to the rest of us who do not overhaul engines every day... it is quite interesting. At least I thought so. More to come. Thanks for watching.
@Rockingruvin
Жыл бұрын
So the “radius” is a rounded left and right corner of the journal against the crankshaft. 🤔 seen at 3:55-4:00. I’d never heard of this before, but I’m not a machinist, nor professional engine builder.
@BoB4jjjjs
4 жыл бұрын
That was very interesting with the machine operator explaining what he was doing.
@ExperimentalAircraftChannel
4 жыл бұрын
@bob4jjjjj Thank you for your support! I appreciate you taking the time to watch!
@robertcarmody194
4 жыл бұрын
As an ex machinist I find this fascinating. Please have more of this type odd content.
@ExperimentalAircraftChannel
4 жыл бұрын
@Robert Carmody THANK YOU. I really appreciate the positive feedback and I will definitely keep going on this topic and create more content. Thank You for watching!
@BoB4jjjjs
4 жыл бұрын
@@ExperimentalAircraftChannel As I an not a machinist I still find this fascinating.
@harpoon_bakery162
4 жыл бұрын
I've always been fascinated with companies that have a zero tolerance mistake factor for repair work. The quality control has to be just out of this world to never make a mistake. it's like how they operate in Germany for all companies.
@john-lb5fu
2 жыл бұрын
Showcasing focused and talented professionals. Great work!
@jamesburke4302
4 жыл бұрын
All my car cranks that I ground on a Van Norman 111, in between centres. had runout of .0000" & I never had to change grinding wheels from rods to main journals. I don't know how people can charge people to ruin cranks grinding them in chucks. I can grind all the journals accurately (specs)all day long & check them for specs. I like people to get back home when they take their yacht / plane out for a ride. I learned how to grind cranks wrong working in an "pro engine building " shop doing them wrong & not meeting specifications , then I worked for a retired shipwright that was in the car plants (Ford)& seen all the crankshafts being ground in between centres & using dogs on each end. He was allowed to tour their shops with the Allied War Effort & did. I learned from him how to regrind crankshafts (without having to rebalance the crank) the same way they are made & had "0" problems. Rather than use a reground crank (done wrong in chucks) I would use a std./std. crank & polish with 2000 grit by hand & use a .001" bearing. I also had a record holding NHRA engine that I checked over . I put the crank in the grinder between centres & checked it out. It was not perfect , it had .0002" runout on the 7/8 rod journal & that was it. I still have the crank forging # 6764 (67 302 small journal) a true piece of bent iron , from "Hank The Crank" , it is fully counterweighted, cross drilled , & hard chromed. I need to know why people can do them close & say that it is right , when they are not. Question is there any "engine rebuilders " grinding crankshafts between centres anywhere close to Atlantic Canada , North America . I guess we have to buy new cranks to get good results. The last engine I built had three first places in three races & was started at the back in the last race. We were the only car there from Halifax Co., N.S. , Canada. You could not get me to work for you grinding cranks in chucks period!!! I don't do close . I feel bad for the people working in the rebuilding industry , because all they know is what they are taught on good machines used incorrectly. It's lonely at the "TOP" I would put up mine up against yours anyday. Thank You ( Motor Mouse ) James T. Burke
@ronniemckinzie7982
2 жыл бұрын
I think a lot of these commenters would freak if you showed what was involved to grind a worn Lycoming to new limits M003, or all the stones and radius involved in a large large radius 520 front drive, and how to clean up a pitted SB505, I don't think many realize just a tiny bit too much side grinding or sweeping a journal can crack the nitrite layer and you've killed a crank, I was sweating balls on my first 720! Just found your channel, I'll check your other videos.
@ExperimentalAircraftChannel
2 жыл бұрын
Thanks for chiming in here and sharing some of your career experience. This is an interesting topic for sure. Thanks for following along! :-)
@onfin3al6
4 жыл бұрын
Aircraft engines are made to such precise tolerances yet the damn things fail way to much . Can't say it's from high RPM yet a car engine will run at twice the rpm almost forever . An aircraft engine is very similar to a Porsche , chevy corvair , subaru and don't have the same problems . Don't make sense to me .
@GeneralChangFromDanang
4 жыл бұрын
I'm surprised they allow .007 on that shaft, but I suppose it's not running at 20k rpm or something.
@stubby4317
4 жыл бұрын
Hobby machinist and mechanic here. Assembled many motors and was curious about the crank grinding process. Excellent video.
@wiley0714
4 жыл бұрын
What has more processing power. A Rasberri pi 4 or that computer at 17:28?
@abrown5449
2 жыл бұрын
I find that is I do rods first , i don't have runout on the mains .. I think you may have meant .0007 (seven ten thousandths ) allowable runout ...Very good video , I applaud you ...
@MrJdsenior
3 жыл бұрын
Very cool video, thx. A radius, though, does not eliminate the chances of stress cracks, it just dramatically lowers them. Enough load cycles over enough time and you WILL have stress cracks, at some scale. Eventually you will have them to failure. Metal fatigue is a real thing, and if you've ever looked at something like a rod with an engine running high RPM they are bending visibly, and more than you would ever guess. Crankshafts are getting nasty rotational (torsional) and lateral loads, that, and the 'crooked' nature of them is why their cross sections/thicknesses are so much larger than say, a transmission input shaft coupling that same motor to its load.
@TreDeuce-qw3kv
Жыл бұрын
Nice heart warming finish to the vid with the children and family. 👍👍
@locustvalleystring
4 жыл бұрын
So THAT's how you grind rod journals. That was always a mystery to me since they are not in the center of the shaft rotation axis. Of course it all makes sense. Thanks.
@mikercflyer7383
Жыл бұрын
Great interview and what an awesome family it should inspire others.😊
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