Go Back   oOple.com Forums > Car Talk > KYOSHO

Reply
 
Thread Tools Display Modes
  #1  
Old 13-02-2007
Scouser's Avatar
Scouser Scouser is offline
Senior Member
 
Join Date: Sep 2006
Location: Liverpool
Posts: 668
Send a message via ICQ to Scouser
Default Dumb question #1

Coming from a nitro background I am more used to spider/planetary diffs than the ball diffs in the Kyosho so it came as a bit of a surprise when the diffs loosened themselves when twisted!! Is this normal? I have assembled as per instructions and even got some nice new ceramic balls for the build. It seems as though the locking nut in the shorter part of the diff is unscrewing itself from the long bolt running through the centre shaft. Construction has ground to a temporary halt until I know if this is ok!!
Reply With Quote
  #2  
Old 13-02-2007
sosidge's Avatar
sosidge sosidge is offline
Mad Member
 
Join Date: Jun 2006
Posts: 1,774
Default

No, the diffs should not loosen themselves if assembled correctly. A good starting point for the diff is fully hand-tightened (no force), and backed off 1/8 turn.
Reply With Quote
  #3  
Old 13-02-2007
woOdy woOdy is offline
Stu-Perstar
 
Join Date: Sep 2006
Location: Radcliffe, Manchester.
Posts: 1,457
Default

this not ment to happen. Please check it again, Have you got the thrust bearing in? have you got it in the right way? So many things it could be. If you think you have built it correct then please try to discribe in order to us the parts going together.
Reply With Quote
  #4  
Old 13-02-2007
jim76 jim76 is offline
*SuPeRsTaR mEmBeR*
 
Join Date: May 2006
Location: ruislip
Posts: 2,890
Default

once you have sorted the diff out, make sure you shim it correctly. follow the manual for the number of thin and thick shims, then move one thick shim from the inside of the gear to the outside so it makes the mesh slightly tighter. don't worry if you think it is a bit tight as the gears bed in after a quick run.
this will stop you stripping bevel gears. also get the slipper set correct before you thrash it in anger.
__________________
4wd - X4TE
2wd - X2C (Mad Rat passed down to son!)

Ansmann Racing UK


RIP - MicroTech Racing

Trader Feedback
Reply With Quote
  #5  
Old 13-02-2007
Scouser's Avatar
Scouser Scouser is offline
Senior Member
 
Join Date: Sep 2006
Location: Liverpool
Posts: 668
Send a message via ICQ to Scouser
Default

I checked and double checked the diff assembly and all was fine. I tightened the diff and then set the screw back a little to allow the cup to rotate. I have now fitted the diff into the rear housing and checked again and all seems well!! I don't know exactly waht was going on before but whatever it was, it aint doing it now.
I have the front diff here and it is loosening/tightening itself when I twist one of the diff cup one way or the other!! All is as it should be but I am mystified!
Reply With Quote
  #6  
Old 13-02-2007
sosidge's Avatar
sosidge sosidge is offline
Mad Member
 
Join Date: Jun 2006
Posts: 1,774
Default

Sounds like you will have to rebuild the diff as something is not right. A tip for lubrication, a little silicone grease on the main balls and plates, a lot of black grease on the thrust assembly and tension spring.
Reply With Quote
  #7  
Old 13-02-2007
Scouser's Avatar
Scouser Scouser is offline
Senior Member
 
Join Date: Sep 2006
Location: Liverpool
Posts: 668
Send a message via ICQ to Scouser
Default

Not really sure what the problem could be. I can disassemble the diff by holding the gear and twisting the long diff cup!! The only thing I can think is that the thrust bearings are not letting the bolt turn freely in its cup. I will take it apart and have a look. Cheers for the help fellas.
Reply With Quote
  #8  
Old 15-02-2007
Scouser's Avatar
Scouser Scouser is offline
Senior Member
 
Join Date: Sep 2006
Location: Liverpool
Posts: 668
Send a message via ICQ to Scouser
Default

Ok well the answer to the dumb question is that the car has a dumb owner!! I had fitted one too many thrust bearings and effectively locked the balls against the inside of the diff cup. I removed one, fitted the correct number (7) and the diff spins lovely. Let the build recommence.
Reply With Quote
  #9  
Old 15-02-2007
BenG's Avatar
BenG BenG is offline
Mad Member
 
Join Date: Apr 2006
Location: Near Btley Buggy club outdoor
Posts: 1,194
Send a message via AIM to BenG Send a message via MSN to BenG
Default

Oh good.

Nice to hear you have sorted it out.

I hate that feeling when the manual is not lining up with the build, so gutting lol.
__________________
Who am I fooling? I love oOple
Reply With Quote
  #10  
Old 15-02-2007
Scouser's Avatar
Scouser Scouser is offline
Senior Member
 
Join Date: Sep 2006
Location: Liverpool
Posts: 668
Send a message via ICQ to Scouser
Default

The manual is not the best! I was warned before the build started that this would be the case. I have worked on GS trucks in the past and their manuals are the worst but Kyosho are hot on their heels I have to say!!
In this particular case though, I can't blame the book. It was all me and my inability to count to seven properly!
Reply With Quote
  #11  
Old 15-02-2007
BenG's Avatar
BenG BenG is offline
Mad Member
 
Join Date: Apr 2006
Location: Near Btley Buggy club outdoor
Posts: 1,194
Send a message via AIM to BenG Send a message via MSN to BenG
Default

Quote:
Originally Posted by Scouser View Post
The manual is not the best! I was warned before the build started that this would be the case. I have worked on GS trucks in the past and their manuals are the worst but Kyosho are hot on their heels I have to say!!
In this particular case though, I can't blame the book. It was all me and my inability to count to seven properly!
LOL. we have all done it, its the excitement, I tend to rush, once built a HPI R40 clutch the wrong way round, hehe

__________________
Who am I fooling? I love oOple
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:11 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
oOple.com