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U.S. Vintage Trans-Am Racing Part 2


Old 03-21-2013, 12:23 PM
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@TommyR, thinking back to the days folks in this area ran 1/8th scale on road, the 4wd BMTs used to have a 10mm split in diameter between the front and rear. I don't recall 100%, but I believe that the car was "overdriven" (tires spun faster at a given rpm) to the front. As the front tires wore more quickly than the rears (generally), the car would "lose" front drive and the car would become more like a 2wd car. I remember him changing front/rear splits regularly to adjust handling. Keep in mind that 1/8th was with a oneway front and a spool rear.
With a TC3/4, I don't know of a way to adjust the drive ratio. Maybe the belt drive cars can do this. Could this be a tuning option in VTA? Seems like more "work" than "Fun" to me.
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Old 03-21-2013, 12:52 PM
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Sorry double post
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Old 03-21-2013, 02:43 PM
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Originally Posted by NutDriver View Post
@TommyR, thinking back to the days folks in this area ran 1/8th scale on road, the 4wd BMTs used to have a 10mm split in diameter between the front and rear. I don't recall 100%, but I believe that the car was "overdriven" (tires spun faster at a given rpm) to the front. As the front tires wore more quickly than the rears (generally), the car would "lose" front drive and the car would become more like a 2wd car. I remember him changing front/rear splits regularly to adjust handling. Keep in mind that 1/8th was with a oneway front and a spool rear.
With a TC3/4, I don't know of a way to adjust the drive ratio. Maybe the belt drive cars can do this. Could this be a tuning option in VTA? Seems like more "work" than "Fun" to me.
You can split the belt cars. The Losi sedans had this option with different pulleys. That being said, it was mostly a foam tire thing, and not often used.
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Old 03-21-2013, 06:06 PM
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Whats the secret on gluing these tires? The outer bead has more glue going on my fingers than the rims.
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Old 03-21-2013, 06:10 PM
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Originally Posted by DARKSIDE View Post
new tires are faster..imo
IMO tires with 1 run on them are the fastest or was it 2
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Old 03-21-2013, 06:49 PM
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Originally Posted by Pit-racer View Post
Whats the secret on gluing these tires? The outer bead has more glue going on my fingers than the rims.
I get the tires completely on the rims. Then with the tire laying flat on my work surface in front of me I press down on the tire at the 9 o'clock position with my left thumb and I have the glue bottle (with long tip) in my right hand squeezing glue in the gap.

Squeeze until I can see glue in there. I use medium so it doesn't set too fast.

Work my way around in a clockwise direction. Glue never touches my hands.
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Old 03-21-2013, 06:59 PM
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Last week I gathered FDR information for everyone running VTA at Indy RC Raceway in Indianapolis (Beech Grove, IN). Average fast laps are usually around 10 seconds at our track (It was around 9.5 seconds last week). I didn't record timing (had to let everyone keep something secret). The car who qualified 2nd ended up winning the main.

QUAL|FDR|LAPS|YEAR|CHASSIS

01 | 3.71 | 33/5:04 | 2007 | TAMIYA TA-05R
02 | 4.10 | 33/5:08 | 1999 | AE TC3 (with aftermarket carbon fiber chassis)
03 | 3.68 | 33/5:08 | 2010 | AE TC6
04 | 3.75 | 33/5:08 | 2004 | AE TC4
05 | 3.92 | 33/5:09 | 2009 | XRAY T2-09
06 | 4.04 | 32/5:00 | 2011 | TAMIYA 417-X
07 | 3.64 | 32/5:01 | 2011 | XRAY T3-11
08 | 3.89 | 32/5:03 | 2007 | XRAY T2-07
09 | 3.72 | 32/5:07 | 2012 | SPEC R
10 | 3.79 | 31/5:07 | 1999 | AE TC3
11 | 3.75 | 30/5:03 | 2004 | AE TC4
12 | 3.82 | 30/5:04 | 2004 | AE TC4
13 | 3.80 | 29/5:04 | 2012 | SERPENT s411 SPORT
14 | 3.50 | 28/5:00 | 2007 | AE TC5
15 | 3.94 | 28/5:01 | 2010 | AE TC6
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Old 03-21-2013, 09:54 PM
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Originally Posted by IndyRC_Racer View Post
Last week I gathered FDR information for everyone running VTA at Indy RC Raceway in Indianapolis (Beech Grove, IN). Average fast laps are usually around 10 seconds at our track (It was around 9.5 seconds last week). I didn't record timing (had to let everyone keep something secret). The car who qualified 2nd ended up winning the main.

QUAL|FDR|LAPS|YEAR|CHASSIS

01 | 3.71 | 33/5:04 | 2007 | TAMIYA TA-05R
02 | 4.10 | 33/5:08 | 1999 | AE TC3 (with aftermarket carbon fiber chassis)
03 | 3.68 | 33/5:08 | 2010 | AE TC6
04 | 3.75 | 33/5:08 | 2004 | AE TC4
05 | 3.92 | 33/5:09 | 2009 | XRAY T2-09
06 | 4.04 | 32/5:00 | 2011 | TAMIYA 417-X
07 | 3.64 | 32/5:01 | 2011 | XRAY T3-11
08 | 3.89 | 32/5:03 | 2007 | XRAY T2-07
09 | 3.72 | 32/5:07 | 2012 | SPEC R
10 | 3.79 | 31/5:07 | 1999 | AE TC3
11 | 3.75 | 30/5:03 | 2004 | AE TC4
12 | 3.82 | 30/5:04 | 2004 | AE TC4
13 | 3.80 | 29/5:04 | 2012 | SERPENT s411 SPORT
14 | 3.50 | 28/5:00 | 2007 | AE TC5
15 | 3.94 | 28/5:01 | 2010 | AE TC6
That's a bit of cool information right there! Especially looking at the FDR's and how no one is running the exact same FDR.
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Old 03-21-2013, 09:57 PM
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If any of you guys are planning to run the Vaterra V100-S in this class, like the '69 Camaro, drop me a line.

Thanks,

-Brian
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Old 03-22-2013, 09:43 AM
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Originally Posted by AudioStylz View Post
That's a bit of cool information right there! Especially looking at the FDR's and how no one is running the exact same FDR.
Exactly, the differences in car setup, driving style and Novak motor variances means there its no magic FDR for VTA racing on the same track. You must do the testing and spend the money on gears to find the best FDR for your particular car. New guys always ask what gear they should buy for their VTA car. I suggest a safe FDR and tell them it is a starting point only and to experiment from there if they want to be on pace. Some listen some don't unfortunately.

Question on the data above........... Indy, how many of your VTA racers were using cooling fans and what FDR were they running? That might also be interesting to know.
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Old 03-22-2013, 10:12 AM
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Top 9 finishers are within one lap or less of leader which is no small feat in itself in normal rc racing, add to that fact there were 9 different chassis combinations in that top 9. Out of the total 15 racers there are 11 different chassis. Speaks volumes for the rule setup that has evolved within the VTA and how well it works for parity between low dollar/high dollar budgets.
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Old 03-22-2013, 10:51 PM
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Actually there were 10 different chassis combos in the top 10. The top TC3 has a aftermarket carbon fiber top deck/bottom chassis and has a shorter wheel base. Enough differences to consider it a different model.

Many of the people at our track are running fans in VTA. I've run a TC4 with a large heat sink and no fan and have qualified near the top in the past. Difference in motor temps at our track with/without a fan are usually around 10 degrees. Regardless, if you are getting a motor without a fan over 150 degrees at our track, your car isn't working well.
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Old 03-24-2013, 06:12 PM
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Hey guys sorry been MIA for a bit this thing called work/Job is starting to get in the way of my hobbie lmao
Sooo what's new in VTA land ???
Any news on new stuff ???
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Old 03-24-2013, 06:25 PM
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Originally Posted by rcpaintinpete View Post
Any news on new stuff ???
Here's some new stuff...

My LHS has stocked a couple of these fully RTR 1969 Camaros made by Vaterra. It's similar to the HPI Sprint 2 RTR Camaro, only it costs less. Also the Vaterra is a shaft driven car, not belt driven like the Sprint 2.
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Old 03-24-2013, 06:32 PM
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Wow that's kool
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