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Old 03-12-2008, 01:11 PM   #16
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So how long will it take before we just mount the middle pulleys right onto the motor shaft?
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Old 03-12-2008, 01:46 PM   #17
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I have a 65 pinion and 76 spur, I run a 56 with an 80 spur on my small indoor track.
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Old 03-12-2008, 01:51 PM   #18
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guys at snowbirds were trying to run 65 pinion to 65 pinion (on top shaft) at the 'Birds in the sprint class. We'll be seeing more gear reduction in the molded case transmissions soon. i would not be surprised to see a jump to the 4.x range that Associated and Losi (and probably others) already offer in their gas trucks. Just takes a slightly different tranny case mold. somebody will figure it out for the road cars also.
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Old 03-12-2008, 02:06 PM   #19
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Well here is a stupid question ,why make slower motors (17.5/21.5) then make bigger pinions and smaller spurs to go as fast as the motors before(13.5)?
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Old 03-12-2008, 02:13 PM   #20
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Quote:
Originally Posted by Marcos.J View Post
Well here is a stupid question ,why make slower motors (17.5/21.5) then make bigger pinions and smaller spurs to go as fast as the motors before(13.5)?
Haha. I was wondering that too. 13.5 seems slow to me, and I just started racing onroad TC this last Sunday, but I am used to 8th scale buggy racing...
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Old 03-12-2008, 02:33 PM   #21
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Well here is a stupid question ,why make slower motors (17.5/21.5) then make bigger pinions and smaller spurs to go as fast as the motors before(13.5)?
+1. You're right on the money, as usual. 17.5's are for people who can't drive.
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Old 03-12-2008, 02:38 PM   #22
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The problem is, the spec motors (10.5, 13.5, 17.5 etc) are of different construction and type to the modified brushless motors. If the companies had stuck with the same format for the spec motors as the modifieds, there wouldn't be this ridiculous gearing. There are ways to make a 17.5 motor rev much higher and not produce much, if any, more power. This is what may eventually happen for these classes to be realistic (especially 17.5 and 21.5).
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Old 03-12-2008, 02:39 PM   #23
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Well here is a stupid question ,why make slower motors (17.5/21.5) then make bigger pinions and smaller spurs to go as fast as the motors before(13.5)?
cmon marcos, we're not much different then f1. get every last bit of performance out of it. that is the nature of competition (and marketing!).
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Old 03-12-2008, 02:46 PM   #24
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+1. You're right on the money, as usual. 17.5's are for people who can't drive.
Hey Marty, then that means the 17.5 should be pefect for you!!!! You set yourself up for that. You have improved quite a bit over the last year.
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Old 03-12-2008, 06:52 PM   #25
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Hey Guys,

We have a few LARGE pinions listed already. We'll have more listed tonight and as the inventory arrives.

Cheers,
Jeff @ Speedtech R/C
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Old 03-12-2008, 07:21 PM   #26
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Well here is a stupid question ,why make slower motors (17.5/21.5) then make bigger pinions and smaller spurs to go as fast as the motors before(13.5)?
Because - WE - the market that those motors were built for - REQUESTED IT...and the MFG. listened!

How's THAT for an answer?
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Old 03-12-2008, 07:49 PM   #27
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If 1:1 gear ratios are the answer might was well just bolt a wheel to the motor.

All to silly, just bump down the voltage and run a proper motor that rev's higher than 5rpm.
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Old 03-12-2008, 08:17 PM   #28
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Because - WE - the market that those motors were built for - REQUESTED IT...and the MFG. listened!

How's THAT for an answer?
I guess the touring and on road side is catching up to the oval side. We've had PRS pinions all the up to 65tooth for a while. It's all about speed with the slow motors.
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Old 03-12-2008, 09:39 PM   #29
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Did we cross paths yesterday? I was there earlier wondering if I could get one of those on my RB5

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Guess there's no excuse anymore about not being able to get enough gear for a 17.5 or a 13.5 4-cell...LOL

Speedtech just got in the new PRS pinions. Freakishly large. 65T 64 p/30T 64p/87T 64p spur.
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Old 03-13-2008, 06:24 AM   #30
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Originally Posted by martman_oc View Post
7.5's are for people who can't drive.
That's an astonishingly rude insult to anyone who prefers a more controllable STOCK class car to an almost indistinguishable 13.5/10/5/mod motor.


Stupid comment.
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