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GT12-RT

Old 01-24-2023, 09:50 PM
  #526  
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Originally Posted by ChadoSan View Post
What are you guys gearing the USGT 21.5 at with the rubber tires?
88t spur, 41t pinion. Still dialing it in.
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Old 01-25-2023, 02:49 AM
  #527  
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Originally Posted by ChadoSan View Post
What are you guys gearing the USGT 21.5 at with the rubber tires?
at apex most everyone who is using the USGT motor is either at 1:1 or just under. i'm running 58 spur and a 57 pinion on my a12
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Old 01-25-2023, 05:14 AM
  #528  
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Originally Posted by Kruss45 View Post
i'm running 58 spur and a 57 pinion on my a12
Originally Posted by Sabin View Post
88t spur, 41t pinion. Still dialing it in.
Wow, huge difference.

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Old 01-25-2023, 08:42 AM
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Originally Posted by oldfool View Post
Wow, huge difference.
Sabin is running 2S, which explains the gearing difference
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Old 01-25-2023, 09:23 AM
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Originally Posted by bentouttashape View Post
I went to Thunderdome on a Wednesday night, and there were close to 20 GT12's. Then, I raced at Hobbytown St Charles that Friday, and there were almost as many GT12'S, and I think I was the only person who did both! So close to 40-50 GT12 racers in Chicagoland. Pretty cool. We usually get between 10-15 here in Minneapolis.

At the track I normally race, in addition to the black endbell, we also run fixed gearing, ball diff (no spools), 730g minimum weight, and only 4 body options allowed. It was interesting to travel to some tracks where the rules are completely different. Honestly, it didn't make much difference. Great, close racing at both.
There is no reason to spec the gearing. Driving style and slight inconsistencies between motors should allow for open gearing. We hae found most end up at he same gearing but some like to tinker with it a bit. Seems pointless to only allow 4 bodies when there are so many cool GT bodies out there. we have a 750g minimum weight. 730g is for foam.
davidl and simple like this.
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Old 01-25-2023, 09:39 AM
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Originally Posted by Rick Vessell View Post
Sabin is running 2S, which explains the gearing difference
I'm also running on a tight, technical track.
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Old 01-25-2023, 09:48 AM
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Originally Posted by Red141 View Post
Why no spools?
It's our penance for "the incident."

Originally Posted by f1larry View Post
There is no reason to spec the gearing. Driving style and slight inconsistencies between motors should allow for open gearing. We hae found most end up at he same gearing but some like to tinker with it a bit. Seems pointless to only allow 4 bodies when there are so many cool GT bodies out there. we have a 750g minimum weight. 730g is for foam.
I...don't make the rules. I just drive the cars.
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Old 01-25-2023, 11:04 AM
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Originally Posted by bentouttashape View Post
It's our penance for "the incident."



I...don't make the rules. I just drive the cars.
fair enough!
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Old 01-25-2023, 11:15 AM
  #534  
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Originally Posted by f1larry View Post
There is no reason to spec the gearing. Driving style and slight inconsistencies between motors should allow for open gearing. We hae found most end up at he same gearing but some like to tinker with it a bit. Seems pointless to only allow 4 bodies when there are so many cool GT bodies out there. we have a 750g minimum weight. 730g is for foam.
Gotta agree that fixed gearing in spec motor class is not a great idea. motors are different. The USGT motor that is most commonly spec'ed has enough variation across individuals motors that lap times can be directly influenced by having a motor with the magic combination. having open gearing can counter that difference.
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Old 01-26-2023, 05:45 AM
  #535  
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Originally Posted by f1larry View Post
Correct!
Only difference to most other tracks is The Thunderdome runs the USGT Tour motor (red endbell), I believe the motor is still a little different than the regular red endbell motor because ours have to have the T etched in them. I am not sure but Paul or Dieter do something to the motor to tweak them.
The motor is the same except the red end bell has 45 degrees of timing and the black 32. TOUR (the oval series) asked for that.
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Old Yesterday, 03:24 PM
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Red end bell at ThunderDome. I’m switching back for couple weeks to practice for a race.
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Old Yesterday, 05:59 PM
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Where did ya'll come up with limiting the GT bodies?
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