Go Back  R/C Tech Forums > General Forums > Electric Off-Road
Team Associated B4.2 Thread >

Team Associated B4.2 Thread

Community
Wiki Posts
Search
Like Tree4Likes

Team Associated B4.2 Thread

Thread Tools
 
Search this Thread
 
Old 11-25-2013 | 08:36 PM
  #11446  
DanielC.'s Avatar
Tech Master
iTrader: (59)
 
Joined: Jan 2005
Posts: 1,755
From: FL
Default

Originally Posted by ray_munday
If you are looking at the chart I put together and petitrc has uploaded, it shows the low speed (static) damping and high speed damping (pack) for different piston oil combos. It helps save some time if you want to say increase pack (for better jump landing) without changing static damping (keep handling similar). Just look for your current setup, trace up to another piston and look which oil gives a similar damping rate. Its based on uni lab measurements of oil flow through real length orifices and generally ive found it accurate to within 2.5wt when vhanging pistons. Its described a bit more in the help thread linked in my sig.




By across the pond you mean the 'other' pond to Australia

Ive found 1.7s to be best to generate traction (37.5 frt / 32.5 rr, grn front and wht rr springs) but does bottom out more on big jumps and if the traction and temp go up ut can feel a bit soft. 3hx1.4 flat seem a good halfway point, 1.6 flat best if its smooth. But most of our tracks are bumpy, and the 1.6 pistons dont ride the bumps well.

Ray
Appreciate the input, Ray. We have a couple local bumpy high bite tracks, where the 1.4x3 flat might be a good alternative. It's kind of a catch 22 when there's a lot of traction and ruts wreaking havok.
DanielC. is offline  
Old 11-26-2013 | 08:22 AM
  #11447  
rc car guy's Avatar
Tech Addict
 
Joined: Sep 2013
Posts: 647
Default

Originally Posted by DanielC.
Appreciate the input, Ray. We have a couple local bumpy high bite tracks, where the 1.4x3 flat might be a good alternative. It's kind of a catch 22 when there's a lot of traction and ruts wreaking havok.
you might want to adjust ride height higher, i run at a fairly "blown out" track for buggies and with the stock set up it was pretty dam good, i ran 27mm front and 28mm rear with stock droop, and stock shock package-springs of course
rc car guy is offline  
Old 11-26-2013 | 10:12 AM
  #11448  
Tech Adept
iTrader: (1)
 
Joined: Oct 2013
Posts: 129
Default

So we have talked about running flat pistons. Is there any reason to run the tapered pistons? I know there is some benefit, but if it is a fairly smooth track I wouldn't think they would really make a difference.
scottie_smith is offline  
Old 11-26-2013 | 10:17 AM
  #11449  
khartlauer's Avatar
Tech Regular
iTrader: (1)
 
Joined: Oct 2013
Posts: 287
From: Las Vegas, Nevada
Default

Originally Posted by scottie_smith
So we have talked about running flat pistons. Is there any reason to run the tapered pistons? I know there is some benefit, but if it is a fairly smooth track I wouldn't think they would really make a difference.
I like them cause you feel the pact of the actual weight but it rebounds like its a lighter weight. For example, I was running 32.5/30 with flat 2x1.6 pistons, now im running 37.5/35 with tapered 2x1.6 pistons and they feel the same over bumps but my car lands ALOT smoother and doesnt chassis slap as much. Plus the added weight keeps the car from chassis rolling so much in the corners, which is nice.
khartlauer is offline  
Old 11-26-2013 | 10:57 AM
  #11450  
Waflet's Avatar
Tech Master
iTrader: (35)
 
Joined: Oct 2011
Posts: 1,926
From: helena, alabama
Default

Hideeho
My local track has always been VERY BUMPY & medium to low traction. The new layout we just finished is SMOOTH & they are talking about various addatives to increase traction (sugar, grapico, etc...). I run a very light setup (t4 chassis, shorty, in-line electronics but in tray & only ft balast for added weight). I expect my light weight setup will be even better on this style track, but I want to make sure I'm thinking right on what setup changes I will need to make.

I'm expecting I will need:
stiffer springs
smaller hole pistons &/or thicker oil
tighter dif
maybe a shelf for the ESC
maybe a rear swaybar
Waflet is offline  
Old 11-26-2013 | 12:12 PM
  #11451  
khartlauer's Avatar
Tech Regular
iTrader: (1)
 
Joined: Oct 2013
Posts: 287
From: Las Vegas, Nevada
Default

Originally Posted by Waflet
they are talking about various addatives to increase traction (sugar, grapico, etc...)
I feel bad for you if they add sugar, its great traction but man does the money cost sky rocket...I hated it when they did it to my track, it got so expensive that I stopped going for awhile. Tires were literally lasting ONE run, two if you were lucky. and it got really unfair for the guys with tires sponsors cause they had a fresh set every run while everyone else had worn down tires. Luckily, he added more clay and stopped sugaring.
khartlauer is offline  
Old 11-26-2013 | 12:20 PM
  #11452  
predu's Avatar
Tech Regular
iTrader: (6)
 
Joined: Sep 2013
Posts: 499
From: Henderson,NV
Default

i agree that stuff is horrible
predu is offline  
Old 11-26-2013 | 12:46 PM
  #11453  
Waflet's Avatar
Tech Master
iTrader: (35)
 
Joined: Oct 2011
Posts: 1,926
From: helena, alabama
Default

Originally Posted by khartlauer
I feel bad for you if they add sugar, its great traction but man does the money cost sky rocket...I hated it when they did it to my track, it got so expensive that I stopped going for awhile. Tires were literally lasting ONE run, two if you were lucky. and it got really unfair for the guys with tires sponsors cause they had a fresh set every run while everyone else had worn down tires. Luckily, he added more clay and stopped sugaring.
Hideeho
Why would you not run slicks? On rare occasions on previous layouts (hot day, track watered all week, lots of vehicles running, & corners swept between runs) we have had a high traction black groove & slicks worked very well (yes, even on 2wd) then. What would be the drawback of running slicks when traction is super high. What is the advantage of knobs when traction is high?
Waflet is offline  
Old 11-26-2013 | 12:51 PM
  #11454  
predu's Avatar
Tech Regular
iTrader: (6)
 
Joined: Sep 2013
Posts: 499
From: Henderson,NV
Default

the sugar turns to sandpaper, tires were wearing all the way thru if you kept running them.
predu is offline  
Old 11-26-2013 | 01:07 PM
  #11455  
DanielC.'s Avatar
Tech Master
iTrader: (59)
 
Joined: Jan 2005
Posts: 1,755
From: FL
Default

Originally Posted by Waflet
Hideeho
Why would you not run slicks? On rare occasions on previous layouts (hot day, track watered all week, lots of vehicles running, & corners swept between runs) we have had a high traction black groove & slicks worked very well (yes, even on 2wd) then. What would be the drawback of running slicks when traction is super high. What is the advantage of knobs when traction is high?
Depends on the type of clay and if it's outdoors. Slicks + sand = no fun
DanielC. is offline  
Old 11-26-2013 | 01:13 PM
  #11456  
Waflet's Avatar
Tech Master
iTrader: (35)
 
Joined: Oct 2011
Posts: 1,926
From: helena, alabama
Default

Originally Posted by predu
the sugar turns to sandpaper, tires were wearing all the way thru if you kept running them.
Hideeho
Are saying a brand new tire will wear completely through to the insert in 3-4 (or even slightly more) runs. HOLY CRAP THAT DOES SUCK!
Waflet is offline  
Old 11-26-2013 | 01:17 PM
  #11457  
khartlauer's Avatar
Tech Regular
iTrader: (1)
 
Joined: Oct 2013
Posts: 287
From: Las Vegas, Nevada
Default

on my track, there was a loose layer of dirt on top and if you got out of the groove, you would spin out INSTANTLY. Thats why guys that had fresh tires had the advantage, they could recover better and faster. and if you run the same tires on a sugared track, they will last a week max before they are unusable.
khartlauer is offline  
Old 11-26-2013 | 01:18 PM
  #11458  
Wildcat1971's Avatar
Tech Prophet
iTrader: (84)
 
Joined: Apr 2012
Posts: 17,389
From: Arizona
Default

I get to race on sugar this weekend....yippy. I am told I will need to run X2,MX or JC orange suburb style tires. It will be outdoors at SRS and I am told slicks wont work. I am hoping a set of tires will last 3 quals and a main in 17.5. /pray
Wildcat1971 is offline  
Old 11-26-2013 | 01:19 PM
  #11459  
Speed Freak RC's Avatar
Tech Addict
iTrader: (13)
 
Joined: Jan 2013
Posts: 711
From: Bellaire, Michigan
Default

Why would you not run slicks?
Because slicks don't belong in off-road.
Speed Freak RC is offline  
Old 11-26-2013 | 01:20 PM
  #11460  
khartlauer's Avatar
Tech Regular
iTrader: (1)
 
Joined: Oct 2013
Posts: 287
From: Las Vegas, Nevada
Default

Originally Posted by Wildcat1971
I get to race on sugar this weekend....yippy. I am told I will need to run X2,MX or JC orange suburb style tires. It will be outdoors at SRS and I am told slicks wont work. I am hoping a set of tires will last 3 quals and a main in 17.5. /pray
better bring two fresh sets of rear tires just in case lol have you ever been up to warehouse 3? im racing there friday and ive never been there.
khartlauer is offline  


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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.