hanulec

iTrader: (28)

Whatever motor is fast in usgt

jlfx car audio

iTrader: (37)

Tsr
Motiv code2
Team powers
R1 v15
Fantom v2
That's my list

tobyzhang

iTrader: (15)

Did the motor performance really change that much over the years in 21.5? Just honestly asking since I'm not into 21.5. The V11 R1 and the V7 R1 are very similar in overall performance for me in 17.5 even though design is 2 years apart and my v7 is very much competitive. I know newer short stack 17.5 are indeed a little faster but for me the difference between a gen 1 reedy sonic on a large TC track is about .3 on a 13.8 second track for me. Yes the .3 a lap is a very significant difference in racing but that's a motor designed 5 years ago. Recently after introduction of short stack the motors didn't get appreciably better for me after that. I know I'll still buy fresh motor for big race every year just so the stators and magnets in there are fresh but new vs new I don't see a big difference in past two years.

I'm not saying the newer designs are not faster. I do feel R1 v11 is more refined and overall improved lower end a lot without loosing top end vs v7, but it didn't blow the V7 out of the water or anything. Maybe I'm not skilled enough to appreciate the difference?

I feel lots of time people complain about motor difference in a class blah blah blah. But not many people look at how much more speed the faster guys were able to carry into and out of corners and how much sooner they can step on it before your car can. Just a thought.

Dan

iTrader: (75)

Of course Driver skills always matters but yes, 21.5 motors have gotten quite a bit faster from just a few years ago, same with 17.5.

howardcano

iTrader: (37)

Novak SS Pro 21.5T terminal resistance: 69 milliohms at 25C
TSR 21.5T ("short stack") terminal resistance: 65 milliohms at 25C
TSR 1.0 21.5T terminal resistance: 57 milliohms at 25C

That's a 21% change over the years in just one of several important parameters.

old_dude

iTrader: (1)

When I put my new TSR 1.0 17.5 in it felt like I went half way to a 13.5. And that was replacing a TSR 17.5 short stack.
A definite step up in speed.

jlfx car audio

iTrader: (37)

Reedy sonic m3 /fantom/Trinity/code 1 motiv 30-34 inductance
TSR 27-29 inductance
These are numbers I've personally seen
Btw 2yr 17.5 motors are a high as 26 (turnagy track star) orca tx 23
Motiv c1 21
Reedy 20
Trinity 19
D3.5...19
Tsr....17.7

RBLove

iTrader: (90)

The new crop of 21.5's definitely appear to be faster than last years 17.5's.

tobyzhang

iTrader: (15)

Holly, I think I need to try a new one then....

howardcano

iTrader: (37)

I can't say it's quite that drastic... But then again, at my last race in Omaha, my USGT fast lap using the new TSR 1.0 was only 2% slower than my 17.5 TC fast lap using the previous version TSR. I'm guessing that a large portion of that was due to less grip from the USGT tires.

KE4PJO

See what I did there?

JRnotEwing

iTrader: (6)

.3 faster just bolting in a new motor, no other changes with the new TSR from the last TSR the one. Same is true for 17.5.
Would have made the A in Sedan a year ago with the speed of my USGT now. Speeds have crept up with technology which is only normal.

Like any racing series, when they go what's deemed "Too fast" They make changes and slow them down. Why would you not have 21.5 be the new stock and 13.5 be the new SS? I hate to dilute USGT with a same motor Stock Touring car. So either USGT becomes the new Stock or yields to stock TC.

Antimullet

iTrader: (65)

Hook, line, and sinker!!! Lol

hanulec

iTrader: (28)

At SW Billy (team scream) and Manny (team powers) crushed it with their 21.5

theproffesor

iTrader: (66)

No reason USGT couldn't be the "new stock". That way we have three very distinct classes in power, traction, and appearance. I like the idea. 25.5, 21.5, 13.5. And on the vast majority of tracks in the US, no need for mod if you have 13.5. Of course this would vary on large outdoor tracks.