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Old 06-27-2008, 09:17 AM   #1381
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Yeah, I think it would be too small on asphalt. You'd be better off with a cheap-o Futaba analog like a s3010 for $22. It'd be enough torque and size with a little trade-off in speed.

With anything like this, the more you pay, the more strength, torque, speed and quality you are going to get.
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Old 06-27-2008, 10:44 AM   #1382
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Did you guys have a quick change system for the batteries ? Or a minimum pit time.... like 1 minute ?
No not really... I don't think anyone tried anything special for the battery changes, and no minimum pit time. The only rule concering battery changes was no body modifications. We also ran a mini enduro the same night and the previous enduro someone cut out their mini body around the battery to help with battery swaps, so that was not allowed this time. Since we only ran one car per team that helped draw in some guys not racing regularly since they only had to drive rather than have a car all set up. It was a nice turnout for the regular club night in the summer.

We ran a mini enduro also and the big thing as far as pits were concerned was the Mini's had to have a mandatory motor change, and the TA's a mandatory tire change. If you had two sets of tires he marked the second set which had to be on the car at the end. If you didn't have two sets he marked one side and those had to be on the other side at the end.
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Old 06-27-2008, 04:16 PM   #1383
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never mind, found the answer

Last edited by outlandr91; 06-27-2008 at 07:05 PM.
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Old 06-27-2008, 04:17 PM   #1384
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What pinion would I need to get a final gear ratio of 4:40 uisng a 64p 100t spur gear, EU 008 with 20t pulley and Vintage tires. Thanks.
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Old 06-27-2008, 04:36 PM   #1385
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What pinion would I need to get a final gear ratio of 4:40 uisng a 64p 100t spur gear, EU 008 with 20t pulley and Vintage tires. Thanks.

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Old 06-28-2008, 08:05 AM   #1386
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I am running a TC3 in our VTA class and I just got a 17.5 setup for it, I am having problems getting the 3.5 to 3.7 gearing. The largest 64p pinion I could find is a 56 tooth which calls for a 79 or 80 tooth spur, the smallest I could find is 88. anyone know where to get a 79 or 80.
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Old 06-28-2008, 08:15 AM   #1387
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I am running a TC3 in our VTA class and I just got a 17.5 setup for it, I am having problems getting the 3.5 to 3.7 gearing. The largest 64p pinion I could find is a 56 tooth which calls for a 79 or 80 tooth spur, the smallest I could find is 88. anyone know where to get a 79 or 80.
PRS ( precision racing systems) goes down to a 76 Pt# prs6476pl and robinson goes to 78 PT# rrp-4178. I had my TC4 geared at 49/78
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Old 06-28-2008, 08:17 AM   #1388
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Quote:
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What pinion would I need to get a final gear ratio of 4:40 uisng a 64p 100t spur gear, EU 008 with 20t pulley and Vintage tires. Thanks.
Tires have no relevance on FDR.

FDR = SPUR / PINION x INTERNAL DRIVE RATIO

For your car, a 38t pinion will give you a 4.474 FDR and a 39t pinion will give you a 4.359 FDR.



Quote:
Originally Posted by Keith Sawyer View Post
I am running a TC3 in our VTA class and I just got a 17.5 setup for it, I am having problems getting the 3.5 to 3.7 gearing. The largest 64p pinion I could find is a 56 tooth which calls for a 79 or 80 tooth spur, the smallest I could find is 88. anyone know where to get a 79 or 80.
PRS and Robinson both make tiny spurs, which is what you need. There were a few TC3s and TC4s at the Nationals running 17.5, so it can be done. You have to relieve the chassis a little with a Dremel in the pinion area for the chainsaw pinions to clear, but not very much at all. I want to say that the gears that were used were 78t-spur and a 52t-pinion.


HTH,


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Old 06-28-2008, 08:22 AM   #1389
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For the TA class, I will be trying out a Futaba S9650, a "high-torque" 12th scale servo.
Definatly go for a standard sized servo. The durability on the 9650 is not good enough for the TA class. Take it from someone who has already tried it, and stripped out the gears in the servo. It seemed fast enough for me, but just not durable. I only got 1 weekend out of it, and stripped the gears in practice the next weekend.

Quote:
I am running a TC3 in our VTA class and I just got a 17.5 setup for it, I am having problems getting the 3.5 to 3.7 gearing. The largest 64p pinion I could find is a 56 tooth which calls for a 79 or 80 tooth spur, the smallest I could find is 88. anyone know where to get a 79 or 80.
PRS makes pinion gears up to 65t. I don't know if you have a limit in the car where you cannot run one that size or something, but the larger pinion gears are definatly out there.
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Old 06-28-2008, 01:27 PM   #1390
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Thanks for the info guys.
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Old 06-28-2008, 04:04 PM   #1391
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mmmmmmmmmmmmmmmm sexy!






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Old 06-28-2008, 04:25 PM   #1392
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Originally Posted by Keith Sawyer View Post
I am running a TC3 in our VTA class and I just got a 17.5 setup for it, I am having problems getting the 3.5 to 3.7 gearing. The largest 64p pinion I could find is a 56 tooth which calls for a 79 or 80 tooth spur, the smallest I could find is 88. anyone know where to get a 79 or 80.
You dont need to be any faster.
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Old 06-28-2008, 04:28 PM   #1393
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Monkey thats a neat shell. Definitely the only one at PT.
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Old 06-28-2008, 04:34 PM   #1394
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Monkey thats a neat shell. Definitely the only one at PT.
lol thanks. it has too look good to detour away from the poor driving ability
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Old 06-28-2008, 04:34 PM   #1395
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mmmmmmmmmmmmmmmm sexy!
OK--you can have your money back. Send it home. Good thing you didn't "mount" it.

You're gonna have to cut those sides WAY up on a TC chassis. I'm trimming and mounting mine before paint. In fact my paint guy has been riding my case to git 'er done.
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