2 Stroke Dirtbike Crank Rebuild

[@Richiehervig]

I’ve never seen crank truing before. It really is an art. Enjoyed the video man 🤙

[@donaldvonlintig8445]

I haven't seen anybody do that, since I did them, back in the day, when my buddy seized-up his Suzuki RM 125, at full speed.The Rod was fused to the Crank, it took a lot of pressure, in the press to get it apart, but I got it back together, less than .001, and it ran great. Now I'm looking to do my 1988 CR500 crank, that's been sitting around for years. Plus it helps when you worked in a machine shop your whole life.

[@milwaukeeaterfu2190]

awesome, i'm gonna do it myself, since over at crankworks az they completely screwed me on my crankshaft service, pressed the wrong one together and just sent it back. i would never ever do busy with them, ever.

[@therawlifefamily]

KTM makes a tool that holds the crank halves in alignment while you press them. Works really well

[@jozsef5846]

Gorgeous work!👍👍👍Congratulation!👍👍👍🙏

[@LilLefty27]

Seriously, do you have any technical background like mechanic schooling? Your skill set and knowledge in the shop is so impressive 👍

[@akmoto_]

No schooling or anything. Just me figuring stuff out through experience and research.

[@BubbaX]

He has a press

[@Sir_Wilo]

That was pretty dope never seen videos on crank rebuilds

[@SRT.9908]

Really it’s that easy and I have been sitting buying new cranks I’m about to save a lot of money

[@patgrace2857]

Where did u get the new connecting rod

[@liamhotspur9182]

what about the weight? you only measure the axle but not the weight of the bolt for centrifugal forces?

[@morgandewalt8333]

Do you offer this as a service? If so, where are you located?

[@jameselias9399]

Awesome video. You are very talented

[@madmarc]

Is that a steel press plate, or aluminum?

[@bumpstartnether]

Good setup! Did you make that truing stand? Where did you get that set of dial indicators? I’m looking to do similar for my builds. Do you ever weld or stake the pin after?

[@therawlifefamily]

you can make one easily out of a wheel truing stand. The Tusk one has uprights that you have to bolt down so what I did was drill a set of holes so I could move one upright close enough to hold a crank.

[@VolkyHaus]

where can i get a kit for indian minarelli p4 70cc rod

[@bourgfranck1836]

Why in the end the comparator is no longer placed at the ends, but rather at the location of the bearings.

[@Vox93]

You know why 🤣🤣😂

[@kylepeterson]

because it's time consuming and requires patience to get .001" runout at the farthest ends of the crank, where it matters. it's much easier to just drop the indicators on the supported journals so it LOOKs like .001" runout, for the video

[@kylepeterson]

@@Vox93 yuppers, we sure do ~

[@ManuelTorres-wx8rt]

I see that you are very good at your job, have you ever seen the HOT RODS brand, do you know if it is good?

[@oprxghost]

Hi I’m rebuilding a yz250, I replaced the bearings along with the bearing cap/seals and the crank as well. When I went to put the casing back together, it didn’t want to fully seet down. I ended up getting it about a quarter inch away from being fully flush but it won’t go the rest of the way down. When i tried putting a few screws in the block and lightly torquing them down to see if it would help, it caused the crank to freeze up and also made no difference in the gap in the block. Any ideas?

[@bozly209]

So what keeps the cranks trued after hitting with the hammer? They just stay in place?

[@therawlifefamily]

The lower rod pin is REALLY tight. Normally you can't get a side to budge by holding it, you have to keep one side against a hard/stable surface.

[@MrKdobbins]

Nicely done

[@timmyers2302]

What thickness steel plate did you use

[@troolllllinnnzaragoza3169]

I need my 1995 yz125 crank rebuilt. I need the connecting rod replaced and the crank balanced. Please help. I’ll pay for shipping.

[@dreece2000]

Damn boy got skills

[@Enjoy2Ride250]

Yo that’s satisfying af😂

[@Jursaw]

So to true it, you just hit it with a brass hammer? You should show how you built that truing stand

[@therawlifefamily]

Start with a Tusk Wheel Truing stand, drill 2 holes on the base and bolt down one of the uprights in the new holes so that the uprights are close enough together to hold a crank

[@keeganfoster1792]

Learned alot nice work

[@JRBean]

Where did you get that stand? I want one!

[@akmoto_]

I made it out of a castor fork

[@JRBean]

@@akmoto_ I'd love to see more of it, can you send me some pictures or do a video on it?

[@therawlifefamily]

@@JRBean What I did was start with a Tusk Wheel Truing stand, drill 2 holes on the base and bolt down one of the uprights in the new holes so that the uprights are close enough together to hold a crank

[@JRBean]

@@therawlifefamily I was just looking at those yesterday, need to build a set of wheels sounds like a good excuse to pick one up. Thanks for the idea!

[@NotAMotoVlog]

That was so satisfying

[@skywatcher8639]

Hi, i have a cuestion, it is posible to fit a crankshaft from 90's or earlys 2000 on my 1987 125cc two stroke??? My cuestion is because i cant find any crankshaft for my YZ 😑

[@therawlifefamily]

You'll have to get measurements of each.

[@Teamloco1853]

Very impressive

[@simeonmitkov5445]

how did you balance it

[@jameswalker5143]

eh it’s close enough lol.

[@motoxjim929]

Awesome video!!!

[@vigorousboredom7016]

The visuals in this video are excellent. However, I don't understand the need to add a musical soundtrack. If I wanted to listen to music, I would go find music videos that I enjoy. Other than that, the refurbishing job on the crank is spot on.

[@dougroemer2715]

Same question below, did you build your own truing stand? Can you please share what you use to build this?

[@therawlifefamily]

Start with a Tusk Wheel Truing stand, drill 2 holes on the base and bolt down one of the uprights in the new holes so that the uprights are close enough together to hold a crank

[@smokeyi477]

Can’t find anybody to do my old ktm crank smh

[@yamaha5980]

(If parts were included) would you rebuild my 2011 yz125 crank if I sent it to you? I’m located in Oklahoma. Anyways nice video

[@dannytyson3278]

How much does one cost

[@alrichbalisbissr.]

Shot out

[@azerty-qy2fc]

Pourquoi a la fin le comparateur n'est plus placé tout au bout du cône ? Plutôt que en face du roulement.

[@bourgfranck1836]

Bien vu, je me suis fait la même remarque ! A cet endroit la lecture sera d'office toujours à 0 !

[@himotox2788]

thats impressed asf

[@motik954]

3:50 😊

[@thrustprop67]

your trueing stand idea,,,, if the pins that go through the bearing bores are not slightly larger than the bore the bearings will not be concentric and cause inaccurate reading ,,,, better to use cheap off shore vee blocks

[@therawlifefamily]

An easy way to check this is to take a known good crank and see what your runout is.

[@kennythomas57]

crank is bent

[@iantakacs6388]

You do rebuild for them I’ll pay you😅

[@martinturcek]

How many hundredths did the crank throw at the end of the ignition pin?

[@buhbuh6515]

How many tons of pressure is your hydraulic press going at on the crank webbing?