Go Back   oOple.com Forums > Car Talk > Schumacher

Reply
 
Thread Tools Display Modes
  #1  
Old 14-10-2011
sunbeam's Avatar
sunbeam sunbeam is offline
Senior Member
 
Join Date: Oct 2010
Location: Cwmbran, South Wales, UK
Posts: 413
Default SV diff handed ?

Hi,

Having just rebuilt my SV diff, It decided to undo itself during it's 9th race.

The diff was properly built with all new balls, cone washers, thrust plates, bolt and cer clip (put in the right way, sharp edge facing against the groove and streched a little for a tight fit). I also thread locked the grub screw.

I've had the SV from new about 4 months and the original diff build lasted almost all that time. It worked itself loose eventually, hense the rebuild.

I think the grub screw last time was on the motor side, and this time it WAS on the motor side.

Is this diff handed ???

Should I thread lock the bolt AS WELL as the grub screw ???

Thanks for any help .
Rob
Reply With Quote
  #2  
Old 14-10-2011
bigred5765's Avatar
bigred5765 bigred5765 is offline
Lion-O - King of the Thundercats
 
Join Date: Mar 2006
Location: chorley
Posts: 8,474
Send a message via MSN to bigred5765 Send a message via Skype™ to bigred5765
Default

no its not handed, thats why the grub screws there, tighten the grub screw against the diff screw using two drivers, if that makes sense to ya
PS never ever had one come loose on use in 2 years racing and never ever used thread lock.
__________________
Mattys the driver,my names carl
Reply With Quote
  #3  
Old 14-10-2011
sunbeam's Avatar
sunbeam sunbeam is offline
Senior Member
 
Join Date: Oct 2010
Location: Cwmbran, South Wales, UK
Posts: 413
Default

Quote:
Originally Posted by bigred5765 View Post
no its not handed, thats why the grub screws there, tighten the grub screw against the diff screw using two drivers, if that makes sense to ya
PS never ever had one come loose on use in 2 years racing and never ever used thread lock.
Hi,

Thanks for that, but I did do it up like you said. I must be doing something wrong
Reply With Quote
  #4  
Old 15-10-2011
steel's Avatar
steel steel is offline
Member
 
Join Date: Aug 2007
Location: liverpool
Posts: 238
Send a message via MSN to steel
Default

As carl said he is spot on if you keep the diff screw held and tighten the grub screw against it you should be good to go i had probs with mine till i done it his way
Reply With Quote
  #5  
Old 15-10-2011
sunbeam's Avatar
sunbeam sunbeam is offline
Senior Member
 
Join Date: Oct 2010
Location: Cwmbran, South Wales, UK
Posts: 413
Default

That is what I did, and it still came undone ?
Reply With Quote
  #6  
Old 15-10-2011
bigred5765's Avatar
bigred5765 bigred5765 is offline
Lion-O - King of the Thundercats
 
Join Date: Mar 2006
Location: chorley
Posts: 8,474
Send a message via MSN to bigred5765 Send a message via Skype™ to bigred5765
Default

Quote:
Originally Posted by sunbeam View Post
That is what I did, and it still came undone ?
then your building it wrong or not tightening it up properly, or you have a defective part in your build
__________________
Mattys the driver,my names carl
Reply With Quote
  #7  
Old 15-10-2011
sunbeam's Avatar
sunbeam sunbeam is offline
Senior Member
 
Join Date: Oct 2010
Location: Cwmbran, South Wales, UK
Posts: 413
Default

OK,

What is the value of a 4 mounth old SV 2011 roller? Only raced indoors on carpet, 100% perfect condition.

Thanks.
Reply With Quote
  #8  
Old 15-10-2011
bigred5765's Avatar
bigred5765 bigred5765 is offline
Lion-O - King of the Thundercats
 
Join Date: Mar 2006
Location: chorley
Posts: 8,474
Send a message via MSN to bigred5765 Send a message via Skype™ to bigred5765
Default

no idea sorry,
__________________
Mattys the driver,my names carl
Reply With Quote
  #9  
Old 15-10-2011
t8rtot's Avatar
t8rtot t8rtot is offline
Member
 
Join Date: Feb 2009
Posts: 235
Default

Its a ball diff. Regular checking and maintenance REQUIRED
__________________
2WD
Kyosho RB6
Reply With Quote
  #10  
Old 15-10-2011
sunbeam's Avatar
sunbeam sunbeam is offline
Senior Member
 
Join Date: Oct 2010
Location: Cwmbran, South Wales, UK
Posts: 413
Default

Quote:
Originally Posted by t8rtot View Post
Its a ball diff. Regular checking and maintenance REQUIRED
Even after only 8 races from a full rebuild?
Reply With Quote
  #11  
Old 15-10-2011
cmgreen's Avatar
cmgreen cmgreen is offline
Mad Member
 
Join Date: Dec 2006
Location: Gods Country-Tyne & Wear
Posts: 1,114
Default

Quote:
Originally Posted by sunbeam View Post
Even after only 8 races from a full rebuild?
Yup!
__________________
'There are two choices in life-Take it or leave it !'

Yokomo - Nemoracing
Sb Designs
http://www.fairfueluk.com/
Reply With Quote
  #12  
Old 15-10-2011
sunbeam's Avatar
sunbeam sunbeam is offline
Senior Member
 
Join Date: Oct 2010
Location: Cwmbran, South Wales, UK
Posts: 413
Default

Well that's the first diff I've had in 30 years of racing that needs that level of matainance !
Reply With Quote
  #13  
Old 15-10-2011
reelman_fishing's Avatar
reelman_fishing reelman_fishing is offline
Member
 
Join Date: Apr 2007
Posts: 279
Default

Is the diff coming lose or undone ? If it's coming lose it's probably just settling in just keep retightening it till you get it right.
Reply With Quote
  #14  
Old 15-10-2011
sunbeam's Avatar
sunbeam sunbeam is offline
Senior Member
 
Join Date: Oct 2010
Location: Cwmbran, South Wales, UK
Posts: 413
Default

To be honest, the bolt and grub were still tight. But the diff just let go right at the start beep. The race before, it was perfect. I did add an extra 5% to my throttle and nip the slipper an extra 1/8th. Maybe the extra power was just enough to piss it off?

All I can think of is that the spring washers gave up or the bolt streched?

I stripped the diff last night and looked it over, everything was as it should be. I rebuilt it with the correct tension, and it's fine again.

It's an odd thing, I can't say I like the spring washer idea.
Reply With Quote
  #15  
Old 16-10-2011
reelman_fishing's Avatar
reelman_fishing reelman_fishing is offline
Member
 
Join Date: Apr 2007
Posts: 279
Default

I’ve found that the diff dose settle in quite a bit. I.e. diff rings gruve, spring washers flatten but just keep adjusting it and it will be fine.

Ps the cougar likes the diff on the tight side
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 04:38 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
oOple.com