Go Back  R/C Tech Forums > General Forums > Electric Off-Road
Kyosho Ultima SC-R Thread >

Kyosho Ultima SC-R Thread

Kyosho Ultima SC-R Thread

Old 04-12-2012, 05:42 PM
  #3511  
Tech Elite
iTrader: (32)
 
Join Date: Jul 2009
Location: So Cal
Posts: 2,380
Trader Rating: 32 (100%+)
Default

Originally Posted by WideOpenThrottle RC View Post
To check your diff raise the rear of the truck off the ground so the chassis is supported and the wheels are in the air. Take each hand and put one on each tire and with light force flick them in the same direction, just a quick spin forward, and see how far they freely spin, I run my diff tight enough so they only spin about half to 3/4 of rotation. That make sense?
Notice to anyone reading this thread.

This quoted post is NOT how you check the diff.

You must spin the wheels in opposite directions!!!!!
Pimpin is offline  
Old 04-12-2012, 05:47 PM
  #3512  
Tech Master
iTrader: (37)
 
Mr.juarez's Avatar
 
Join Date: Dec 2008
Posts: 1,280
Trader Rating: 37 (100%+)
Default

Originally Posted by Pimpin View Post
Notice to anyone reading this thread.

This quoted post is NOT how you check the diff.

You must spin the wheels in opposite directions!!!!!
would you guys make up your mind and tells us (ball diff newbies) which freakin damn way is the right one?

if he's wrong at least elaborate more, or why on "your" right way
Mr.juarez is offline  
Old 04-12-2012, 06:22 PM
  #3513  
Tech Master
iTrader: (77)
 
Yeti AS3's Avatar
 
Join Date: Jan 2010
Location: lockport,IL
Posts: 1,349
Trader Rating: 77 (100%+)
Default

Originally Posted by Mr.juarez View Post
would you guys make up your mind and tells us (ball diff newbies) which freakin damn way is the right one?

if he's wrong at least elaborate more, or why on "your" right way
Pimpin is correct. The ball diff allows each wheel to turn at different rates. With a gear diff or ball diff...spinning the wheels forward wouldn't tell you a thing about the diff, it would only tell you the drivetrain isn't bound up.
Watch this http://www.rccaraction.com/blog/2011...ed-tebo-video/
It is also a great vid because you don't have to make easy laps on the track to break the diff in. It works awesome. I do it on my 2 and 4 buggy as well.
Yeti AS3 is offline  
Old 04-12-2012, 06:47 PM
  #3514  
Tech Elite
iTrader: (15)
 
asc6000's Avatar
 
Join Date: Jan 2011
Location: Meridian Idaho
Posts: 3,412
Trader Rating: 15 (100%+)
Default

Originally Posted by Mr.juarez View Post
seems kind of stiff to me even though the spring collars are 3/4 up towards the shock caps.
how the collars are adjusted does not make the spring any stiffer/softer it merely raises/lowers the ride height, you can preload the spring but it is still the same rate.
asc6000 is offline  
Old 04-12-2012, 07:26 PM
  #3515  
Tech Adept
iTrader: (11)
 
fishboy's Avatar
 
Join Date: Jan 2012
Location: Michigan
Posts: 132
Trader Rating: 11 (100%+)
Default

Originally Posted by Yeti AS3 View Post
Pimpin is correct. The ball diff allows each wheel to turn at different rates. With a gear diff or ball diff...spinning the wheels forward wouldn't tell you a thing about the diff, it would only tell you the drivetrain isn't bound up.
Watch this http://www.rccaraction.com/blog/2011...ed-tebo-video/
It is also a great vid because you don't have to make easy laps on the track to break the diff in. It works awesome. I do it on my 2 and 4 buggy as well.
All,

The most important thing that Tebo missed in the video is the fact that the transmission CANNOT spin while you are checking the diff. Depending on what motor you are running the actual motor may not have enough cogging torque (some refer to it as no-current torque) to keep the trans from not spinning. I usually take the slipper cover off and hold the spur gear with one hand and flick either wheel with the other so I am assured the transmission doesn't spin.

Greg
fishboy is offline  
Old 04-12-2012, 08:04 PM
  #3516  
Tech Elite
iTrader: (43)
 
seth556's Avatar
 
Join Date: May 2005
Location: Orlando, FL
Posts: 2,233
Trader Rating: 43 (100%+)
Default

Just got the truck all ready for this weekend!
Attached Thumbnails Kyosho Ultima SC-R Thread-photo.jpg  
seth556 is offline  
Old 04-12-2012, 08:12 PM
  #3517  
Tech Adept
iTrader: (11)
 
fishboy's Avatar
 
Join Date: Jan 2012
Location: Michigan
Posts: 132
Trader Rating: 11 (100%+)
Default

Looking pretty good Seth! I run the sway bar in the front too. It is a must at my track IMO. The truck used to traction roll so bad before I put one on.

Greg
fishboy is offline  
Old 04-12-2012, 08:22 PM
  #3518  
Tech Elite
iTrader: (121)
 
ChrisAttebery's Avatar
 
Join Date: Oct 2009
Location: Gilroy, CA
Posts: 2,258
Trader Rating: 121 (100%+)
Default

Is that sway bar from a Kyosho kit? If so, what is it off of?

Originally Posted by fishboy View Post
Looking pretty good Seth! I run the sway bar in the front too. It is a must at my track IMO. The truck used to traction roll so bad before I put one on.

Greg
ChrisAttebery is offline  
Old 04-12-2012, 08:27 PM
  #3519  
Tech Adept
iTrader: (11)
 
fishboy's Avatar
 
Join Date: Jan 2012
Location: Michigan
Posts: 132
Trader Rating: 11 (100%+)
Default

Originally Posted by ChrisAttebery View Post
Is that sway bar from a Kyosho kit? If so, what is it off of?


Mine is an associated SC10 rear kit.

Greg
fishboy is offline  
Old 04-12-2012, 08:39 PM
  #3520  
Tech Master
iTrader: (77)
 
Yeti AS3's Avatar
 
Join Date: Jan 2010
Location: lockport,IL
Posts: 1,349
Trader Rating: 77 (100%+)
Default

Originally Posted by fishboy View Post
All,

The most important thing that Tebo missed in the video is the fact that the transmission CANNOT spin while you are checking the diff. Depending on what motor you are running the actual motor may not have enough cogging torque (some refer to it as no-current torque) to keep the trans from not spinning. I usually take the slipper cover off and hold the spur gear with one hand and flick either wheel with the other so I am assured the transmission doesn't spin.

Greg
I'll get a message to Tebo to let him know he doesn't know what he's doing

He spins the wheels in opposite directions (not the same direction) to check the diff tightness, therefore the trans does not move.
The trans may turn if you spin the wheels the same direction, in which case, it is being checked incorrectly.
Yeti AS3 is offline  
Old 04-13-2012, 12:44 AM
  #3521  
Tech Apprentice
 
Join Date: Aug 2011
Location: Bucharest
Posts: 63
Default

Originally Posted by t0p_sh0tta View Post
The RTR needs 3 mods in my opinion:

-Ball Diff
-Velvet shocks (std. size or big bore)
-RT5/SC-R screw/nut that go in place of the bushings in the steering assembly.
Thank you!
lamav4 is offline  
Old 04-13-2012, 05:17 AM
  #3522  
Tech Elite
iTrader: (43)
 
seth556's Avatar
 
Join Date: May 2005
Location: Orlando, FL
Posts: 2,233
Trader Rating: 43 (100%+)
Default

Originally Posted by ChrisAttebery View Post
Is that sway bar from a Kyosho kit? If so, what is it off of?
The hardware on the front is from the SC10 sway bar kit, and the bar if from a Lazer I believe. I also have a slightly thicker bar from XRay that I sometimes use. I think this one is 1.3mm and the Xray is 1.4mm.

In the rear it's just the standard SC10 sway bar, just have to drill holes in the arms for the ballstud.

And now it seems as though a lot of the fast AE guys are running sway bars all around on their SC10.
seth556 is offline  
Old 04-13-2012, 05:24 AM
  #3523  
Tech Addict
iTrader: (2)
 
Join Date: Oct 2008
Posts: 516
Trader Rating: 2 (100%+)
Default

Originally Posted by seth556 View Post
The hardware on the front is from the SC10 sway bar kit, and the bar if from a Lazer I believe. I also have a slightly thicker bar from XRay that I sometimes use. I think this one is 1.3mm and the Xray is 1.4mm.

In the rear it's just the standard SC10 sway bar, just have to drill holes in the arms for the ballstud.

And now it seems as though a lot of the fast AE guys are running sway bars all around on their SC10.
Would the sc10 sway bars work on the front also like the rear? And could you show us a pic of how you secure the sway bar under the front and rear bumpers?
J-RO is offline  
Old 04-13-2012, 06:37 AM
  #3524  
Tech Elite
iTrader: (86)
 
Join Date: Jun 2006
Location: Omaha,NE
Posts: 2,598
Trader Rating: 86 (99%+)
Default

Originally Posted by Pimpin View Post
Notice to anyone reading this thread.

This quoted post is NOT how you check the diff.

You must spin the wheels in opposite directions!!!!!

My bad, not sure what I was thinking I must have been typing to fast , post was edited
WideOpenThrottle RC is offline  
Old 04-13-2012, 06:41 AM
  #3525  
Tech Adept
iTrader: (11)
 
fishboy's Avatar
 
Join Date: Jan 2012
Location: Michigan
Posts: 132
Trader Rating: 11 (100%+)
Default

Originally Posted by Yeti AS3 View Post
I'll get a message to Tebo to let him know he doesn't know what he's doing

He spins the wheels in opposite directions (not the same direction) to check the diff tightness, therefore the trans does not move.
The trans may turn if you spin the wheels the same direction, in which case, it is being checked incorrectly.
I'm not saying Tebo did anything wrong, he didn't. All I was adding for the "newbies" who were asking the question for help regarding diff setup was the fact that the transmission cannot spin while doing so.

Watch this video (about 3/4 way down the page). Lot's of good info here too.
http://www.rccaraction.com/blog/2011...yan-cavalieri/

Last edited by fishboy; 04-13-2012 at 09:21 AM.
fishboy is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.