6563LikesUSGT
03-05-2013 | 06:33 AM
#931
Tech Addict
iTrader: (11)
Joined: May 2012
Posts: 574
My xpattern d's do that. I tried the pro compound at the Us Nats at Summit, and they are way more consistent. I went back to the D's for the main and failed like a rock in the water. 
I also learned that you can run 26mm vta tires on all 4 corners. as gt rules state. "any treaded 26mm tires with any spoked rim" My buddy ran the 26m vta rubbers on all 4 corners and rocked the show in gt class. So i may try it.
I also learned that you can run 26mm vta tires on all 4 corners. as gt rules state. "any treaded 26mm tires with any spoked rim" My buddy ran the 26m vta rubbers on all 4 corners and rocked the show in gt class. So i may try it.
03-05-2013 | 06:43 AM
#932
Tech Regular
iTrader: (4)
Joined: May 2012
Posts: 308
From: Somewhere in Tornado Alley
No the tires won't work on non VTA rims. Yes you can use the VTA rims and tires as they are similar in diameter. The outer rim is tucked up inside the tire to allow for the sidewall to show like a real Trans Am tire would look. The inner and outer diameters are nearly the same inside the tire so there isn't a lot of flex to the outer sidewall unless your glue comes loose! You actually get more gluing surface due to the sidewall. Be sure to scrape the chrome off the gluing area if you get chrome wheels.
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03-05-2013 | 07:24 AM
#934
Tech Regular
iTrader: (4)
Joined: May 2012
Posts: 308
From: Somewhere in Tornado Alley
Working on it. I'm doing a frame up rebuild of my Sprint 2 with an Exotek chassis upgrade for my USGT car. The others are getting a tear down cleaning. I'll be racing spec TC as well as USGT and VTA. Not sure about NasTruck. Three classes keep me hopping as it is! 
I think I'll be a better driver this year. I was starting to get around the track a lot better by the end of the season. I really appreciated your help!
See you in a few weeks!
I think I'll be a better driver this year. I was starting to get around the track a lot better by the end of the season. I really appreciated your help!
See you in a few weeks!
03-05-2013 | 08:13 AM
#935
Hey fellas, I've got some motor related questions I could use some help with...
I'm running a TC6 with a Thunder Power 21.5 motor. I started out running a ~3.2 FDR ratio with the motor timing at 30*. The car had loads of top end, but seemed a bit sluggish in the infield. I don't recall exact motor temps, but they were nothing alarming. Maybe 130F or so.
The following weekend I geared it down to a more conservative ~3.7 FDR and kept the motor timing at 30*. Much snappier acceleration, but the top speed was a bit lackluster (as you'd expect). Motor temps were mostly the same.
Last weekend I kept the gearing the same (3.7), but upped the timing to 45*. The car seemed much faster overall. I was pretty pleased with it.....'til I pulled it off the track and saw the 165* temps. And it had that "electronics aren't happy" smell, if you know what I mean. So I dropped the timing down to 35* for the rest of the day. However, the top end was marginal at best. I was barely (and I mean barely) faster than the brushed motor 27T class on the straight!
So here's my thought. I ordered a fan/heatsink for the motor to keep it happy so I can run higher timing. It was much faster in that configuration. But it got me thinking....
Does everyone in these "blinky" type classes always just max out the timing and then gear the motor 'til it runs cool enough? Or do some people run less timing, but taller gearing?
I'm running a TC6 with a Thunder Power 21.5 motor. I started out running a ~3.2 FDR ratio with the motor timing at 30*. The car had loads of top end, but seemed a bit sluggish in the infield. I don't recall exact motor temps, but they were nothing alarming. Maybe 130F or so.
The following weekend I geared it down to a more conservative ~3.7 FDR and kept the motor timing at 30*. Much snappier acceleration, but the top speed was a bit lackluster (as you'd expect). Motor temps were mostly the same.
Last weekend I kept the gearing the same (3.7), but upped the timing to 45*. The car seemed much faster overall. I was pretty pleased with it.....'til I pulled it off the track and saw the 165* temps. And it had that "electronics aren't happy" smell, if you know what I mean. So I dropped the timing down to 35* for the rest of the day. However, the top end was marginal at best. I was barely (and I mean barely) faster than the brushed motor 27T class on the straight!
So here's my thought. I ordered a fan/heatsink for the motor to keep it happy so I can run higher timing. It was much faster in that configuration. But it got me thinking....
Does everyone in these "blinky" type classes always just max out the timing and then gear the motor 'til it runs cool enough? Or do some people run less timing, but taller gearing?
03-05-2013 | 03:54 PM
#936
Personally I rarely jack my timing all the way up, I'll usually run a taller gear and less timing, but thats just me. I like to see temps at around 130-140, and with the D3.5 it seems that I have to run it like that. My Novak Ballistic 25.5 reacts well to the same too
03-06-2013 | 05:52 AM
#937
Personally I rarely jack my timing all the way up, I'll usually run a taller gear and less timing, but thats just me. I like to see temps at around 130-140, and with the D3.5 it seems that I have to run it like that. My Novak Ballistic 25.5 reacts well to the same too
03-06-2013 | 10:35 AM
#938
Tech Master
iTrader: (13)
Joined: Jul 2011
Posts: 1,117
From: Austin, TX
Hey fellas, I've got some motor related questions I could use some help with...
I'm running a TC6 with a Thunder Power 21.5 motor. I started out running a ~3.2 FDR ratio with the motor timing at 30*. The car had loads of top end, but seemed a bit sluggish in the infield. I don't recall exact motor temps, but they were nothing alarming. Maybe 130F or so.
The following weekend I geared it down to a more conservative ~3.7 FDR and kept the motor timing at 30*. Much snappier acceleration, but the top speed was a bit lackluster (as you'd expect). Motor temps were mostly the same.
Last weekend I kept the gearing the same (3.7), but upped the timing to 45*. The car seemed much faster overall. I was pretty pleased with it.....'til I pulled it off the track and saw the 165* temps. And it had that "electronics aren't happy" smell, if you know what I mean. So I dropped the timing down to 35* for the rest of the day. However, the top end was marginal at best. I was barely (and I mean barely) faster than the brushed motor 27T class on the straight!
So here's my thought. I ordered a fan/heatsink for the motor to keep it happy so I can run higher timing. It was much faster in that configuration. But it got me thinking....
Does everyone in these "blinky" type classes always just max out the timing and then gear the motor 'til it runs cool enough? Or do some people run less timing, but taller gearing?
I'm running a TC6 with a Thunder Power 21.5 motor. I started out running a ~3.2 FDR ratio with the motor timing at 30*. The car had loads of top end, but seemed a bit sluggish in the infield. I don't recall exact motor temps, but they were nothing alarming. Maybe 130F or so.
The following weekend I geared it down to a more conservative ~3.7 FDR and kept the motor timing at 30*. Much snappier acceleration, but the top speed was a bit lackluster (as you'd expect). Motor temps were mostly the same.
Last weekend I kept the gearing the same (3.7), but upped the timing to 45*. The car seemed much faster overall. I was pretty pleased with it.....'til I pulled it off the track and saw the 165* temps. And it had that "electronics aren't happy" smell, if you know what I mean. So I dropped the timing down to 35* for the rest of the day. However, the top end was marginal at best. I was barely (and I mean barely) faster than the brushed motor 27T class on the straight!
So here's my thought. I ordered a fan/heatsink for the motor to keep it happy so I can run higher timing. It was much faster in that configuration. But it got me thinking....
Does everyone in these "blinky" type classes always just max out the timing and then gear the motor 'til it runs cool enough? Or do some people run less timing, but taller gearing?
03-06-2013 | 11:51 AM
#940
Oh, really? I was just going on the mfg's documentation that said to "never" exceed 180F. I figured 165 (after pulling it off the track) would mean I'm getting dangerously close to the limit. You don't think it's anything to be concerned about? I'm willing to go back to it, but I have a fan on order and will run it either way (since I need ballast anyway).
03-06-2013 | 01:48 PM
#941
Joined: Apr 2007
Posts: 2,296
From: Winthrop harbor
My xpattern d's do that. I tried the pro compound at the Us Nats at Summit, and they are way more consistent. I went back to the D's for the main and failed like a rock in the water. I also learned that you can run 26mm vta tires on all 4 corners. as gt rules state. "any treaded 26mm tires with any spoked rim" My buddy ran the 26m vta rubbers on all 4 corners and rocked the show in gt class. So i may try it.
I also learned that you can run 26mm vta tires on all 4 corners. as gt rules state. "any treaded 26mm tires with any spoked rim" My buddy ran the 26m vta rubbers on all 4 corners and rocked the show in gt class. So i may try it.
), of the USGT class at Summit last weekend.
03-06-2013 | 02:34 PM
#942
Oh, really? I was just going on the mfg's documentation that said to "never" exceed 180F. I figured 165 (after pulling it off the track) would mean I'm getting dangerously close to the limit. You don't think it's anything to be concerned about? I'm willing to go back to it, but I have a fan on order and will run it either way (since I need ballast anyway).
03-06-2013 | 06:01 PM
#944
I have 2 XRAY T2'06s and a T2'07 that yall can borrow if you want to get one going. You seen for yourself that i was able to gear it aggressive enough to compete in 17.5tc. Those EAM D3.5 21.5s have the power! Its a cool class to run for sure