R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-24-2009, 09:00 PM   #1
Tech Fanatic
 
Join Date: Aug 2009
Location: Delaware
Posts: 891
Trader Rating: 12 (100%+)
Default Rubber Tires-How to tell when they are useless?

this has been my first year of racing, and albeit its been a good one, im still trying to learn the smaller things. i've been running most of my tires down to the belt, the slapping on a new set and feel like my car has gotten wicked fast.

so, how can i tell when they should soon be chucked? when they start making ripples? or all the way to the belt?
Double D Donuts is offline   Reply With Quote
Old 10-24-2009, 09:20 PM   #2
Tech Champion
 
Join Date: Oct 2005
Location: Cincinnati, OH
Posts: 5,360
Trader Rating: 38 (100%+)
Default

Its just a balance between performance and budget. After a few runs (maybe less depending on the surface and the compound) they will start to lose performance. Most people run them until the performance hinders their abilities. If you crash a lot then new tires won't make much of a difference. If you are really fast and .1 seconds per lap makes a difference in the result you might replace them every 1-2 runs. Obviously once the belt shows you are at the end of life.
or8ital is offline   Reply With Quote
Old 10-24-2009, 09:22 PM   #3
Tech Elite
 
Join Date: Feb 2008
Location: Upper Milwaukee
Posts: 2,731
Trader Rating: 23 (100%+)
Default

i used to put a few runs on these jaco blue things and they would rip up shortly after i opened the package. 30 bucks a week it got to.
__________________
Mike Adamec
TEAM HACK-HACK OR BE HACKED
Trackside Hobbies
not home is offline   Reply With Quote
Old 10-24-2009, 11:38 PM   #4
Tech Master
 
Danny-b23's Avatar
 
Join Date: Feb 2009
Location: Saskatoon, SK, Canada
Posts: 1,335
Trader Rating: 3 (100%+)
Default

On carpet, I usually wait until there is either a tear on the inside edge of the tire, or until there is a deep groove on the inside edge.
__________________
RC America|XRAY|ORCA|Motiv|EA Motorsports
Danny Buck
WCICS Rep - Round 1, Saskatoon, SK
Danny-b23 is offline   Reply With Quote
Old 10-25-2009, 07:00 AM   #5
Tech Champion
 
stiltskin's Avatar
 
Join Date: Jun 2005
Location: Virginia Beach
Posts: 5,368
Trader Rating: 102 (100%+)
Default

What causes that groove on the inside edge of the tire? I never noticed it on carpet but after one day on asphalt, all four tires have a groove. It seems to match up with the inside of the rim when the tire rolls. Does this indicate a weak or used insert?
__________________
Tony Rumple
Team EAM // Gravity RC
stiltskin is offline   Reply With Quote
Old 10-25-2009, 07:08 AM   #6
Tech Master
 
cheehtae's Avatar
 
Join Date: Apr 2005
Posts: 1,470
Trader Rating: 15 (100%+)
Default

For me if I start to lose traction after 15-20 laps, its a sign that my tires are done.
__________________
every impulse that we strive to strangle broods in the mind, and poison us...action is a mode of purification... the only way to get rid of temptation is to yield to it.
cheehtae is offline   Reply With Quote
Old 10-25-2009, 07:20 AM   #7
Tech Master
 
mr crum's Avatar
 
Join Date: May 2008
Location: tampa florida 813
Posts: 1,591
Trader Rating: 5 (100%+)
Send a message via Yahoo to mr crum
Default

Quote:
Originally Posted by stiltskin View Post
What causes that groove on the inside edge of the tire? I never noticed it on carpet but after one day on asphalt, all four tires have a groove. It seems to match up with the inside of the rim when the tire rolls. Does this indicate a weak or used insert?
its from running alot of camber i run 2 degrees and that is wat usually does it
__________________
SPEED PASSION TEAM DRIVER
ADAB RACING FACTORY PILOT
WWW.ADRENALINERACEWAY.COM
FL INDOOR R/C COMPLEX
TEAM B.R. RACING
mr crum is offline   Reply With Quote
Old 10-25-2009, 08:30 AM   #8
Tech Champion
 
stiltskin's Avatar
 
Join Date: Jun 2005
Location: Virginia Beach
Posts: 5,368
Trader Rating: 102 (100%+)
Default

Quote:
Originally Posted by mr crum View Post
its from running alot of camber i run 2 degrees and that is wat usually does it
Thanks. I'll take some out and see where it goes.
__________________
Tony Rumple
Team EAM // Gravity RC
stiltskin is offline   Reply With Quote
Old 10-25-2009, 09:43 AM   #9
Tech Master
 
cyanyde's Avatar
 
Join Date: Mar 2006
Location: KL, MY.
Posts: 1,039
Default

From new, no more than 3 runs per race. Then keep it for the next meet and use it for practice.
cyanyde is offline   Reply With Quote
Old 10-25-2009, 12:20 PM   #10
Tech Addict
 
Join Date: Mar 2002
Location: New Zealand
Posts: 556
Default

most of the guys racing stock at our local outdoor asphalt track will usually buy a set of 24R, 28R and 32R sorex tyres and that will easily last more than a years racing in all kinds of conditions.

I am certain the pro guys will notice the 1/10 of a second difference between new tyres and old tyres but for 98% of the racers out there it makes no difference except of course in the back pocket.

It also depends on how abrasive the track surface is too, somed tracks are really easy on tyres and others rip the tyres to shreds. Also choosing the right tyre for the conditions makes a huge difference to wear.

Mike
ixlr8nz is offline   Reply With Quote
Old 10-25-2009, 02:36 PM   #11
Tech Elite
 
sosidge's Avatar
 
Join Date: Dec 2001
Location: Bristol, UK
Posts: 3,865
Default

Quote:
Originally Posted by stiltskin View Post
What causes that groove on the inside edge of the tire? I never noticed it on carpet but after one day on asphalt, all four tires have a groove. It seems to match up with the inside of the rim when the tire rolls. Does this indicate a weak or used insert?
It's not camber.

It's the way the tyre moves under load and the effect of the edge of the belt.

Some tyres are just prone to it. It is unavoidable. Asphalt can be a lot more abrasive than carpet which is why the wear shows up faster.

I'm always surprised at how little time I actually lose per lap when the inside edge of the (front) tyre has already torn (when it happens to the rears the car becomes uncontrollable).
sosidge is offline   Reply With Quote
Old 10-25-2009, 03:29 PM   #12
Tech Adept
 
Join Date: Apr 2008
Location: Melbourne, Australia
Posts: 237
Default

I see it more when a track has long sweepers and the inside tire is unloaded and with a lot of ackermann being dragged thru by the front spool. If i see this happenning i try to swap my fronts (left-right) every run.

on the outside tire if your car is understeering a little I see it because at max steering angle the inside part of the tire actually rolls over the inside sidewall meaning you have a more solid thing under the tire surface than just the insert causing more wear in that particular spot.
gameover is offline   Reply With Quote
Old 10-25-2009, 03:54 PM   #13
Tech Master
 
cheehtae's Avatar
 
Join Date: Apr 2005
Posts: 1,470
Trader Rating: 15 (100%+)
Default

Quote:
Originally Posted by sosidge View Post
It's not camber.

It's the way the tyre moves under load and the effect of the edge of the belt.

Some tyres are just prone to it. It is unavoidable. Asphalt can be a lot more abrasive than carpet which is why the wear shows up faster.

I'm always surprised at how little time I actually lose per lap when the inside edge of the (front) tyre has already torn (when it happens to the rears the car becomes uncontrollable).
+1
__________________
every impulse that we strive to strangle broods in the mind, and poison us...action is a mode of purification... the only way to get rid of temptation is to yield to it.
cheehtae is offline   Reply With Quote
Old 10-25-2009, 05:22 PM   #14
Tech Fanatic
 
Join Date: Aug 2009
Location: Delaware
Posts: 891
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by gameover View Post
I see it more when a track has long sweepers and the inside tire is unloaded and with a lot of ackermann being dragged thru by the front spool. If i see this happenning i try to swap my fronts (left-right) every run.

on the outside tire if your car is understeering a little I see it because at max steering angle the inside part of the tire actually rolls over the inside sidewall meaning you have a more solid thing under the tire surface than just the insert causing more wear in that particular spot.
thats a good first point, we have a fast sweeper so i will definitely switch my fronts next time. thanks!
Double D Donuts is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
rubber touring tires??? JuNK??? burbs Electric On-Road 30 06-15-2006 04:17 PM
Spec [email protected] national level races sponger Electric On-Road 56 09-19-2004 08:02 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 09:50 AM.


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