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Old 10-08-2010, 01:41 PM   #9331
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My problem is not traction. It's the fact that rubber tires remove the "grove" that the Foam tire users put down. Or so our club members are saying.

I am just trying to appease the group we will be racing with
Most of the time we have only rubber tire classes and a groove comes into the track it does not take it away.... so that's not true. However if you end up with foams to keep the peace that's your guys decision there... have fun and race.

As far as foams go we have had some guys for enduros take their VTA cars and put foams on them. Usually they were hard nitro foams and they worked well with the rubber setups on the car. As far as offset foams I don't know of any but I'm assuming you are looking at that for the "look" of the cars. Well the HPI Mustangs are narrower in the rear so they will look fine with no offset. The Cuda and Camaro are wider in the rear but you could always just widen the rear with wheel shims if its that important. You really won't have the vintage look anyway so I personally wouldn't worry about it.
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Old 10-08-2010, 02:03 PM   #9332
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You probably have done this. Have you experimented with traction compounds and cleaned your tires after a run?
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Old 10-08-2010, 02:31 PM   #9333
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I dont know what to say to this. This can not be the first time VTA has shared a track with foam classes including 1/12. I have never heard of the VTA cars erasing the blue groove. I am not making any acusations here but it sounds like a unicorn.
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Old 10-08-2010, 02:52 PM   #9334
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Glad to hear that no one else is having that problem. Sigh. I also race 1/12 and last winter we ran mini slash's on rubber tires and the cars were coming off the track with lots of gunk on the tires and they had to clean their tires after every run.

Now they were using traction compound to soften the rubber but i don;t know if that has anything to do with it.

Now that being said I personally found the traction better then when we had all foam cars.

But our carpet is old and when you put you hand down on the track it comes up black.

So I am going to be cleaning the carpet with one of those rental units to see if we can "start fresh"

I am pushing for rubber sighting the slowness of these cars and possibly barring the use of Traction compound.

We'll see what happens.

Last edited by jdeadman; 10-08-2010 at 02:53 PM. Reason: bad bad spelling
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Old 10-08-2010, 03:04 PM   #9335
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Default Approved ROAR Sportsman Speed Control (ESC)

What is the problem with Tekin RS/RS Pro ESC?
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Old 10-08-2010, 07:17 PM   #9336
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To any one who races a tc4 in the vta class, i am trying to come up with the gearing to run the 25.5 novak motor, doing the math using a 64 pitch 96t spur 60t pinion with the internal drive at 2.5 = a 4.0 fdr does that sound right? and will such large gears fit in a tc4? thank you
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Old 10-08-2010, 09:55 PM   #9337
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I need a set up for a sprint 2 sport.I have never run vta so I don't know what's going to happen.Imight need a starting point on the gearing for the stock brush motor?? Any help would be nice?????
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Old 10-08-2010, 10:47 PM   #9338
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To any one who races a tc4 in the vta class, i am trying to come up with the gearing to run the 25.5 novak motor, doing the math using a 64 pitch 96t spur 60t pinion with the internal drive at 2.5 = a 4.0 fdr does that sound right? and will such large gears fit in a tc4? thank you
You would want an 88t spur or smaller to make the gears easier to fit.
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Old 10-08-2010, 10:50 PM   #9339
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What is the problem with Tekin RS/RS Pro ESC?
ROAR has put a "hold" on their software approval. So it is not Sportsman class ("spec") legal.

Either way, it's not legal for trans am, since we have only non updateable ESCs to prevent these sorts of problems.
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Old 10-08-2010, 10:53 PM   #9340
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My problem is not traction. It's the fact that rubber tires remove the "grove" that the Foam tire users put down. Or so our club members are saying.

I am just trying to appease the group we will be racing with
Funny, there have been times at the Cleveland Indoor Champs race where you could watch the sedan groove disappear while the 1/12 cars ran.

Here's the trick: Spray a 2 foot wide patch of the straight with Paragon Ground FX (black can) during practice. You will have mucho traction.
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Old 10-09-2010, 05:34 AM   #9341
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Funny, there have been times at the Cleveland Indoor Champs race where you could watch the sedan groove disappear while the 1/12 cars ran.

Here's the trick: Spray a 2 foot wide patch of the straight with Paragon Ground FX (black can) during practice. You will have mucho traction.
we have been using paragon FX II except for some cheaters that used WD-40

don't know if that is causing a problem or not. but is fx2 like ground effects?
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Old 10-09-2010, 06:17 AM   #9342
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You would want an 88t spur or smaller to make the gears easier to fit.
When using a 88t spur or smaller what size pinion gear is needed to get close to the 4.0 range? its smaller the spur higher the pinion right? if i figured right a 88t spur and a 55t pinion = a 4.0 but what combo of spur and pinion gears give the best ajustablity? thanks

Last edited by mojo 309; 10-09-2010 at 06:55 AM.
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Old 10-09-2010, 10:02 AM   #9343
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I've been running a TC3 and now a TC4 in 25.5 VTA. My best suggestion to use an 80 or 84 tooth spur (depending on what pinion gears you already have). PRS makes small spur gears that help running a shaft drive car with brushless motors (http://www.precisionracingsystems.com/products/26).

Here is a quick gear/FDR chart for a car with a 2.5 internal ratio (TC3/TC4/HPI Pro 4)

....|50... |51...|52....|53
----------------------------
80.|4.00 |3.92 |3.85 |3.77 |
82.|4.10 |4.02 |3.94 |3.86 |
84.|4.20 |4.11 |4.03 |3.96 |
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Old 10-09-2010, 12:04 PM   #9344
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[QUOTE=LOSIRACER77;8046485]I need a set up for a sprint 2 sport.I have never run vta so I don't know what's going to happen.Imight need a starting point on the gearing for the stock brush motor?? Any help would be nice?????
Can anyone help me out??
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Old 10-09-2010, 01:37 PM   #9345
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cool that chart helps out alot thank you all for your help
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