View Poll Results: what's your tire choice?
Protoform
46
30.67%
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104
69.33%
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U.S. Vintage Trans-Am Racing Part 2
#7607
Tech Elite
iTrader: (37)
Thanks Howard BTW I like the idea of terminal resistance, just thought they were doing it already in TECH inspections (at least they should have been) but perhaps not as a design spec.
I've been dynoing several 25.5 motors and so far there is only one that comes close to the BOSS 25.5 in terms of power, torque, and acceleration at the same or less amp draw. (BTW the D3.5 25.5 isn't the one).
I've been dynoing several 25.5 motors and so far there is only one that comes close to the BOSS 25.5 in terms of power, torque, and acceleration at the same or less amp draw. (BTW the D3.5 25.5 isn't the one).
What dyno are you using? I'm gathering the necessary items at the moment to make my own, but I always like to use suitable (and affordable!) pre-existing items. The biggest challenge is a suitable flywheel. I have one from a Robitronic, but it seems pretty light. We'll see if it will give enough data points on a spool-up.
#7608
Tech Elite
iTrader: (66)
With lap times like that, I assume the track is not huge, but still on the larger side. I think those results so more of what the difference in weight and battery do vs motor. Especialy since a Novak won the ROAR class. I would be interested in knowing what batteries were used in the ROAR class vs the 5000mah cap in USVTA.
#7610
Tech Fanatic
I know some people are already measuring resistance in tech inspections. It's great as a quick check to make sure somebody hasn't "accidentally" left off a turn on the windings. There are also some organizations (like the BRL) that have their own minimum resistance for each motor type, and enforce it rigorously. I wouldn't expect ROAR to do that, since they currently have no rules in place for it.
What dyno are you using? I'm gathering the necessary items at the moment to make my own, but I always like to use suitable (and affordable!) pre-existing items. The biggest challenge is a suitable flywheel. I have one from a Robitronic, but it seems pretty light. We'll see if it will give enough data points on a spool-up.
What dyno are you using? I'm gathering the necessary items at the moment to make my own, but I always like to use suitable (and affordable!) pre-existing items. The biggest challenge is a suitable flywheel. I have one from a Robitronic, but it seems pretty light. We'll see if it will give enough data points on a spool-up.
I'm using the Fantom or as some call it the FACTs Machine dyno. I was looking into various dynos for brushless motors and decided to get the Fantom out of my son's attic and go with something I knew instead of building one. Pretty easy to use for brushless motors. You just have to hook the dyno to an ESC then hook the ESC to the brushless motor. You power the ESC with a receiver battery pack and use your Transmitter to control the ESC. IF you locate one there are more detailed instructions on the RC Conference at the deccosoftware website. I bought the new FACT MACHINE II software that runs on Windows based computers (through Windows 7) as I no longer have a computer that runs the old DOS software that comes with the Dyno.
#7611
Think I was the only one to run both VTA classes, my roar car was 0.746sec faster then my usvta car, thats around 5% faster. Both cars ran 5000mah batteries, roar car had reedy motor.
#7613
Tech Fanatic
With lap times like that, I assume the track is not huge, but still on the larger side. I think those results so more of what the difference in weight and battery do vs motor. Especialy since a Novak won the ROAR class. I would be interested in knowing what batteries were used in the ROAR class vs the 5000mah cap in USVTA.
#7614
roar car was easier to drive and had fresh tires, with a little more work and fresh tires the TC3 could have been a little more faster/consistent. Either way it was a awesome weekend
roar 3.17 fdr @ 30* timing
usvta 3.35 fdr @ full legal timing
both coming off around 160-170F
roar 3.17 fdr @ 30* timing
usvta 3.35 fdr @ full legal timing
both coming off around 160-170F
#7615
Suspended
iTrader: (16)
With lap times like that, I assume the track is not huge, but still on the larger side. I think those results so more of what the difference in weight and battery do vs motor. Especialy since a Novak won the ROAR class. I would be interested in knowing what batteries were used in the ROAR class vs the 5000mah cap in USVTA.
Lol track is large and flowing 150 x 75
I used a 7200 and had the timing past the sticker a good bit
I figured WTH anything goes in this class of VTA why not
#7616
#7617
Tech Champion
iTrader: (4)
As the slowest guy on the ROAR VTA class I did not have the correct gearing for my car. I will shortly. My car was and has always been powered by Novak(boss) with a 6000mah battery for this race. Normally I run a 5000mah battery and usually more competitive(at the upcoming nationals track with the gear I ran.
Pete I'll see you July5th with the new gear ratio and set-up (at kissimmee). WGT you can follow me around Kissimmee. I'm much better with a 2wd car. but you have an Excellence car to start with, If you need anything let me know- it runs great right out of the box as they say.
Pete I'll see you July5th with the new gear ratio and set-up (at kissimmee). WGT you can follow me around Kissimmee. I'm much better with a 2wd car. but you have an Excellence car to start with, If you need anything let me know- it runs great right out of the box as they say.
#7618
Tech Fanatic
[QUOTE=rcpaintinpete;13335659]Lol track is large and flowing 150 x 75 QUOTE]
Big is relative, 150 is about the length of our back straightaway here, but things here in Texas are usually bigger.
Big is relative, 150 is about the length of our back straightaway here, but things here in Texas are usually bigger.