R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 02-21-2015, 09:16 AM   #31
Tech Master
 
Fran's Avatar
 
Join Date: Oct 2003
Location: Oxnard, CA
Posts: 1,547
Trader Rating: 156 (100%+)
Default

I haven't seen anyone post this, so how much foam do you leave on the tire? I know for carpet, most true the foam way down. I remember from racing 1/12 scale outdoors 6 years ago, too much foam left on the rim the tires tend to spit out chunks of foam on the edges.
__________________
Roadrunnersrc.com
Team Associated 12R5.2
Team Associated TC6.2
Team Associated F6
Fran is offline   Reply With Quote
Old 02-21-2015, 09:36 AM   #32
Regional Moderator
 
disaster999's Avatar
 
Join Date: Aug 2001
Location: Hong Kong
Posts: 3,163
Trader Rating: 1 (100%+)
Default

I run the tire untrued straight from the box to maximize the life of the tire (they are expensive). I never had any problems with chunking unless I have a huge crash.

I even ran some OOLLLDD Jaco foam tires which I think are at least 8 years old, the ones with smaller diameter grey rims and thick foams. I left them untrued and ran them as is and I still didnt have any problem with chunking.

I like keep my car's ride height at around 4-5mm since asphalt tracks arent as smooth as carpet and my chassis take a huge beating if I run the car too low. I run the tire till theres about 2-3mm of foam left before I throw them out.

I guess it also depends on what type of surface you run on. If its an parking lot track then that might have something to do with it. I run on dedicated asphalt rc track so the surface should be a lot more smoother.
disaster999 is offline   Reply With Quote
Old 02-21-2015, 09:48 AM   #33
Tech Master
 
Fran's Avatar
 
Join Date: Oct 2003
Location: Oxnard, CA
Posts: 1,547
Trader Rating: 156 (100%+)
Default

Thanks, maybe my foam was too soft which caused the chunks to come off. I hated to true so much foam off, but the tires lasted longer than running them uncut. We have a dedicated r/c facility, but it's still a bit bumpy with a smooth slurry coat. We spray it with a grape soda mixture to bring up the traction. I use to use Trinity tire tweak ( I still have some new bottles!) but I might follow the instructions I've read that suggest "runny suntan lotion" rubbed in after the Tire Tweak.The track accommodates touring cars and pan cars through the the race day.
__________________
Roadrunnersrc.com
Team Associated 12R5.2
Team Associated TC6.2
Team Associated F6
Fran is offline   Reply With Quote
Old 02-21-2015, 10:43 AM   #34
Tech Elite
 
howardcano's Avatar
 
Join Date: Jan 2012
Location: Olathe, KS
Posts: 3,610
Trader Rating: 35 (100%+)
Default

I always reinforce the rear sidewalls to prevent chunking. My method: Add a layer of Weldwood contact cement to the rear sidewall, let dry, then press the sidewall against some carpet to pick up fibers. This reinforces the sidewall while remaining flexible. Looks bad, but works great.

After each run, check the sidewalls and add a little contact cement to any areas where the rubber starts peeling from the rim (between rubber and rim). 15 minutes later, it's ready to go.

Result: No more chunking!

This works both for running full-sized tires on asphalt, and smaller tires on carpet.
__________________
Howard Cano
When race results are re-calculated using the IOF (Index Of Fun), I always win.
1993 ROAR 1/8 Pan National Champion
howardcano is offline   Reply With Quote
Old 02-22-2015, 02:54 AM   #35
Tech Master
 
Car Breaker's Avatar
 
Join Date: Apr 2004
Location: Grave Yard
Posts: 1,261
Trader Rating: 10 (100%+)
Default

I run asphalt, my Speedmind tyre are usually uncut (51mm) and run it down to 43~44mm. however I round the edge of tyres by a lot so the side of tyre wont chunk unless I have bad crash .
__________________
Xray X12 2015
ARC R10 ATS
Car Breaker is offline   Reply With Quote
Old 02-22-2015, 04:48 AM   #36
Regional Moderator
 
disaster999's Avatar
 
Join Date: Aug 2001
Location: Hong Kong
Posts: 3,163
Trader Rating: 1 (100%+)
Default

I find the speedmind foam tires wears a lot better than xceed.
disaster999 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
1/12 scale asphalt??? Zdiddy Electric On-Road 78 07-21-2017 06:00 PM
Best 1/12th kit for Asphalt yyhayyim Electric On-Road 17 06-13-2013 08:59 PM
Best 12th Scale for Asphalt... RC12 Electric On-Road 18 04-15-2013 02:21 AM
What 1/12 scale foam compounds on asphalt DustinR Electric On-Road 7 04-17-2008 05:15 PM
BMI 1/12th scale, Hara 1/12th, bodies Mdoc R/C Items: For Sale/Trade 0 07-07-2007 10:26 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 01:43 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net