Community
Wiki Posts
Search
Like Tree54Likes

RC10B4/T4 Forum

Thread Tools
 
Search this Thread
 
Old 07-26-2010, 08:47 AM
  #13171  
Tech Legend
 
Wild Cherry's Avatar
 
Join Date: Aug 2001
Location: TRCR Modified Driver
Posts: 22,595
Default

Originally Posted by Jmuck69
I have read that the CVA* helps square the car up out of corners and the CVD* helps keep the suspension active and doesn't lock it. Is this true, and if so this could be another tuning aid.



You got it, but the opposite or the other way around of what you said...
Wild Cherry is offline  
Old 07-26-2010, 09:35 AM
  #13172  
Tech Lord
iTrader: (86)
 
Davidka's Avatar
 
Join Date: Oct 2004
Posts: 10,883
Trader Rating: 86 (100%+)
Default

Are the CVA's a different joint? Anyone have a link to a photo?
Davidka is offline  
Old 07-26-2010, 09:37 AM
  #13173  
Tech Legend
 
Wild Cherry's Avatar
 
Join Date: Aug 2001
Location: TRCR Modified Driver
Posts: 22,595
Default

Yes , CVA is way different Dave ...

CVD Barrel for pivot on axle

CDA Barrel for pivot on the dog bone

CVA Binds more than CVD

Picture of a CVA bone
Attached Thumbnails RC10B4/T4 Forum-cva.png  

Last edited by Wild Cherry; 07-26-2010 at 09:52 AM.
Wild Cherry is offline  
Old 07-26-2010, 09:41 AM
  #13174  
Tech Initiate
iTrader: (2)
 
Join Date: May 2004
Location: south cali
Posts: 37
Trader Rating: 2 (100%+)
Default

yup, shocks are fresh and im running on indoor clay here in sothern CA (westcoast, ocrc, lrh). thanks for the tips... i'll try those out first


Originally Posted by Eli
maybe go up 2.5w on rear shock oil. but may have to much adverse affects. you may want to add weight to the lipo if youre running lipo before you go getting all frustrated. im running a strip of thin lead down middle approx. 70 grams and then i have 14 grams (2 7gram thin pieces of lead) on front and back of battery. Using check point 3800 so it fits exactly in the middle of battery compartment.
My car is pretty planted on the track
R u running indoor clay track?


oh yeah, make sure youre ride height is set correctly 24mm from bottom of trans and 24mm right behind bumper. and your shocks are fresh right?
justxroro is offline  
Old 07-26-2010, 09:58 AM
  #13175  
Tech Lord
iTrader: (86)
 
Davidka's Avatar
 
Join Date: Oct 2004
Posts: 10,883
Trader Rating: 86 (100%+)
Default

Originally Posted by Wild Cherry
Yes , CVA is way different Dave ...

CVD Barrel for pivot on axle

CDA Barrel for pivot on the dog bone

CVA Binds more than CVD

Picture of a CVA bone
^^That will make no difference. The configuration and materials (I assume) of the pivot are the same so the amount of the bind has to be the same as well. If the dogbone is aluminum (softer) then that would have an effect.

An upside I can see is that someone could make a boot for the CVA allowing it to cleanly retain lube. That would make a meaningful difference.
Davidka is offline  
Old 07-26-2010, 10:02 AM
  #13176  
Tech Legend
 
Wild Cherry's Avatar
 
Join Date: Aug 2001
Location: TRCR Modified Driver
Posts: 22,595
Default

Dave ,



Where the pivot is located makes a huge difference...
Wild Cherry is offline  
Old 07-26-2010, 10:53 AM
  #13177  
Tech Lord
iTrader: (86)
 
Davidka's Avatar
 
Join Date: Oct 2004
Posts: 10,883
Trader Rating: 86 (100%+)
Default

Originally Posted by Wild Cherry
Dave ,



Where the pivot is located makes a huge difference...
I don't believe that. Besides, the pivot isn't in a different place, it's connection is just reversed.

Why do you think it makes a difference?
Davidka is offline  
Old 07-26-2010, 11:25 AM
  #13178  
Tech Champion
iTrader: (45)
 
Cameron Kellogg's Avatar
 
Join Date: Nov 2007
Location: Idaho
Posts: 5,776
Trader Rating: 45 (100%+)
Default

Originally Posted by Davidka

An upside I can see is that someone could make a boot for the CVA allowing it to cleanly retain lube. That would make a meaningful difference.
Tamiya did that on the Frog.
Cameron Kellogg is offline  
Old 07-26-2010, 11:27 AM
  #13179  
Tech Legend
 
Wild Cherry's Avatar
 
Join Date: Aug 2001
Location: TRCR Modified Driver
Posts: 22,595
Default

Originally Posted by Davidka

Why do you think it makes a difference?


The way the joint spins on the car while the arm is moving up & down & the gyroscopic forces ...
Wild Cherry is offline  
Old 07-26-2010, 11:56 AM
  #13180  
Tech Lord
iTrader: (86)
 
Davidka's Avatar
 
Join Date: Oct 2004
Posts: 10,883
Trader Rating: 86 (100%+)
Default

Originally Posted by Wild Cherry
The way the joint spins on the car while the arm is moving up & down & the gyroscopic forces ...
Unless the joint spins on a different axis (further inboard from the wheel for instance) then all of these forces would be the same.
Davidka is offline  
Old 07-26-2010, 12:02 PM
  #13181  
Tech Legend
 
Wild Cherry's Avatar
 
Join Date: Aug 2001
Location: TRCR Modified Driver
Posts: 22,595
Default

Not the same Dave , sorry ...


A Clue


when you rotate a bent CVD gyro forces makes the joint straighten or flat ....

Last edited by Wild Cherry; 07-26-2010 at 12:21 PM.
Wild Cherry is offline  
Old 07-26-2010, 01:35 PM
  #13182  
Tech Lord
iTrader: (86)
 
Davidka's Avatar
 
Join Date: Oct 2004
Posts: 10,883
Trader Rating: 86 (100%+)
Default

Originally Posted by Wild Cherry
Not the same Dave , sorry ...


A Clue


when you rotate a bent CVD gyro forces makes the joint straighten or flat ....
That happens to all universal joints, it's caused by friction, not gyroscopic forces (did you make that up? ). Given the barrell and pins are presumably the same size and same material, placed in the same location, the friction would be the same.

Does anyone actually know if there's a difference?
Davidka is offline  
Old 07-26-2010, 01:40 PM
  #13183  
Tech Champion
iTrader: (14)
 
Jmuck69's Avatar
 
Join Date: Jan 2010
Location: Atlanta, GA.
Posts: 5,061
Trader Rating: 14 (100%+)
Default

"I have no idea what you're talking about, so here's a bunny with a pancake on it's head."
Jmuck69 is offline  
Old 07-26-2010, 02:11 PM
  #13184  
Tech Elite
iTrader: (26)
 
yyhayyim's Avatar
 
Join Date: May 2006
Location: Weston, FL
Posts: 3,424
Trader Rating: 26 (100%+)
Default

Hey guys,

a 1mm shim gives 2 deg anti-squat? I have a 4.1 and want to know which rear toe config set up should I run, the 2deg or 3deg? The 2 deg should provide a "looser" feeling and better rotation, right?
yyhayyim is offline  
Old 07-26-2010, 03:02 PM
  #13185  
Tech Master
 
Join Date: Feb 2006
Location: Las Vegas, NV
Posts: 1,480
Default

The CVA has no handling difference from a CVD. The reason the CVA was used is because MIP has trademarked the CVD. The reason Ryan's setups show CVDs is because at the time that they were made we didn't have CVAs to run yet.


The 2* of rear toe will make the car looser and rotate more than the 3* of toe.
Chris Jarosz is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.