Pit Bike Transmission Rebuild || CRF70 / CRF50 / XR70 / XR50 / CT70 / Z50
If you find the Honda Service Manual woefully vague when it comes to rebuilding your transmission, you are not alone!! It's awful! However, in this video I will show you how to rebuild your pitbike transmission step by step. This is an easy transmission to rebuild, so if you have never done one, this is a great one to cut your teeth -- so to speak!
★AFFILIATE LINKS
Special Thanks to: www.TBoltUSA.com
Vapor Blasting Provided By - Houston Vapor Blasting: www.houstonvaporblasting.com
★PRODUCTS USED
Replacement Transmission: tboltusa.com/store/ahp-speed-...
★TIMESTAMPS
0:00 Intro
0:35 Important Info on Rebuilding a Transmission
2:22 Prepare for Disassembly
2:54 Disassemble the Countershaft
4:44 Disassemble the Mainshaft
6:21 Disassemble the Gearshift Drum
7:25 Inspection
10:43 Reassemble the Mainshaft
13:40 Reassemble the Countershaft
16:14 Reassemble the Gearshift Drum
17:50 Thank You for Watching - Announcements
★DOCUMENT LINKS
Pit Bike Mainshaft - Exploded View: drive.google.com/file/d/1f6ti...
Pit Bike Mainshaft - Cross Section: drive.google.com/file/d/1aCLu...
Pit Bike Countershaft - Exploded View: drive.google.com/file/d/1DsDW...
Pit Bike Countershaft - Cross Section: drive.google.com/file/d/1wKwB...
★MUSIC CREDITS
Track: Move - KV [Audio Library Release]
Music provided by Audio Library Plus
Watch: • Move - KV | Free Backg...
Free Download / Stream: alplus.io/move
________
Purple by Roa / roa_music1031
Creative Commons - Attribution 3.0 Unported - CC BY 3.0
Free Download / Stream: bit.ly/_-purple
Music promoted by Audio Library • Purple - Roa (No Copyr...
________
Alaska Sky • Patrick Patrikios
Alaska Sky
℗ KZread Audio Library
Released on: 2019-10-25
• Alaska Sky
Пікірлер: 44
Brian, your how-to videos are excellent. Thanks!
@brian.d.mobley
Жыл бұрын
Oh man!!! Thanks Jeff! Im glad you like them! Thanks for watching!
You never fail to make amazing rebuild videos. Thank you
@brian.d.mobley
2 жыл бұрын
Thanks Bluegrass! I have been working for 4 days straight on two new ones for a KLX I'm building. If you find the time, please check them out!
100% earned a subscription right here. I’m looking to restore my 2003 xr70r and you’ve given me all the information I need! Thank you so much!
@brian.d.mobley
3 жыл бұрын
Hey Yama-Haulin! Thanks! And, honestly, if it was me, I would just buy a new transmission! They are so cheap. Unless you just enjoy taking things apart to learn.
Good job man! Greetings from Buenos Aires Argentina 🇦🇷
@brian.d.mobley
Жыл бұрын
Hey! Viva Argentina! 🇦🇷. Thanks for watching!
Thx for this vid your channel is so good. Can you pls do more z50 stuff
@brian.d.mobley
3 жыл бұрын
Hi Joe! I don’t have a Z50, but I would love to work on one! The motor is essentially the same as the one we build up for the CRF70 project we’ve been working on. Thanks for watching!
thank you Brian Im new to working on Honda motors.your videos are Awesome.Trying to learn how to restore Mini trail 70s 50s
@brian.d.mobley
Жыл бұрын
Hi Chris! Glad my videos are helping! I rebuilt a 1978 CT70 recently too. Very fun, but unexpectedly complex project. I have a few more in line for restoration soon! Keep wrenchin’! Thanks for watching!!
Best series of build videos on these engines. Good job. Ive built many of these. Watched alot of content. Definitely some good stuff here. 👌
@brian.d.mobley
2 жыл бұрын
Thanks John! Lots of new stuff coming! Thanks for watching and for the supportive words!
@yourselfdotcom
2 жыл бұрын
@@brian.d.mobley you got a sub today sir. Keep it coming!
@brian.d.mobley
2 жыл бұрын
@@yourselfdotcom Thanks, John!
Excellent job !!
@brian.d.mobley
3 жыл бұрын
Thanks Vince! More good stuff to come!
Wonderful job. Please try turning down the background music, hard to hear your voice over it sometimes. Thanks You!
Thank you for this video.
@brian.d.mobley
2 жыл бұрын
My pleasure! Thanks for taking the time to leave a nice comment!
Can you show how to swap it for 4 geste insted of 3
If someone was doing an actual rebuild like this wouldn't you want to use assembly lube on all of the moving parts? Also, do you know if they make parts to change these transmission gears to say taller gears or shorter gears depending on what it's being used for? Can you put a 4 spd setup inside a case that was originally a 3 spd? Also, do you know if you can change an automatic clutch setup to be a manual clutch? Thank you! 👍
I wish I could give this video 100k views it was so helpful
@brian.d.mobley
3 жыл бұрын
Hey Seth! Your kind comment is more valuable than 200K views! Thank you! And, Im really glad it helped you! Thank you for watching. 👍🏻
@sethpetras6641
3 жыл бұрын
@@brian.d.mobley are you going to have a video of the full engine assembly?
@brian.d.mobley
3 жыл бұрын
@@sethpetras6641 Yes! I have one video to make on installing a high volume oil pump, then I will do a video on the engine assembly.
it would be great if you did a z50 4 speed engine i too have issues with the washers inside , great vids by the way
@brian.d.mobley
3 жыл бұрын
Hi Scott ! I’d do a Z50 if I had one! I have a CT70 in my queue which is similar, but it’s not 4 speed. I love those Z50s and would love to restore one.
No mechanic is complete without some brightly colored nail polish in his box. Not only is it good for marking, but it is also effective at sealing welch plugs.
I love your videos and your attention to detail. With a lot of folks buying 125cc upgrade engines, I would love to see you dive into one of those…..I have a CT70 clone with a 125cc Loncin motor with a 4 speed semi automatic clutch….I bet you could gain a huge new following with this…..Lifan is the other popular redo engine….
@brian.d.mobley
Жыл бұрын
Hey BtB! I have had that suggestion made before as I have few CT's in my inventory. But, I just can't bear to hot-rod them! I did sort of amp up my CRF70 and discussed that a in the engine rebuild video I did for that bike, but I've never done a conversion engine job because I just love the original Honda's.
@backthebadge4009
Жыл бұрын
I am just thinking it might be a great way to grow your channel…there are so many out here with these engines it would be a real service….maybe make a service book while you’re doing it…I bet you would sell a ton because there is absolutely nothing out here for us…
@brian.d.mobley
Жыл бұрын
@@backthebadge4009 Im sure it would be useful to a lot of people, but I just dont have lot of interest in spending money on that motor nor do I have a chassis to put it in! But Im sure you are right - that there is an audience out there for that retro-fit.
I’m putting together a z50 gearbox and can’t work out which side the washers should face that sit against the bearings on the gearbox shafts They are slightly bowed and I remember you saying they are directional, does the more sunken in part of the washer sit against the bearing or against the gears? I have problems with the sprocket shaft being to short sticking out of the motor causing the sprocket to rub on the case so I just want to get it right this time appreciate your help and videos, they are by far the best online for these mini bikes
@brian.d.mobley
3 жыл бұрын
Hi Joe. When disassembling the gear shafts, I mark each washer and circlip with a paint pen as you probably saw in the video. That is the easiest way to determine the orientation. If you did not Mark yours, you’ll need a magnifying glass so you can examine each washer and circlip shoulder radius. I discussed how to do this in detail at the 2:00 mark in this video. kzread.info/dash/bejne/hmVqw9pmnMu6Z8o.html
PLEASE DO A CR 85 CRANK SEAL REPLACEMENT ON THE CLUTCH SIDE and can you please do it without having to take the whole engine apart
@brian.d.mobley
3 жыл бұрын
The Honda service manual covers that pretty well. I’m going to be building a CR85 in March so I’ll create that video then.
YESSSSSS
@brian.d.mobley
3 жыл бұрын
Not sure how I missed this one! Thanks Seth!
I have to replace the main shaft in my xr70r but the one I ordered is different? Was there two different mainshafts?
@brian.d.mobley
7 ай бұрын
So sorry. That’s something that you’d just have to research to sure. There are just too many parts and variations for me to comment with authority.
♥️🥰👍👍👍👍
@brian.d.mobley
Жыл бұрын
Thank you!