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Old 11-20-2006, 02:40 PM   #1636
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You are right, "go up a few teeth" could be taken either way. I can see your confusion. Going up a few teeth on the spur is gearing down, and going up a few teeth on the pinion is gearing up. When racers at our track say, "go up a few teeth", they are referring to the pinion because the pinion is the most commonly changed gear.

The Novak 13.5T brushless stock motor needs to be geared very high (big pinion, small spur). It has a ton of torque. For my 1/12th car on a 76' oval, I am running a 78T spur and 36T pinion. (With my tires thats around a 70mm rollout.) You've got to give this motor something to chew on. It's just waiting for some resistance. Don't go up a measley 2 or 3 teeth on your pinion. Go big! Trust me, this motor's power band is on the low end. It's not a high RPM motor.
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Old 11-20-2006, 03:01 PM   #1637
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Quote:
Originally Posted by Deves
Hi guys, Tried the new 13.5 today in a race and just didn't like the performance. I usually run in the top 3 in stock A main but this thing was getting me farther and farther behind and put me in the B main I was also having issues with cogging or thermaling.

I tried the same gear ratio I was running with a Quantum2/CO27 combo and also tried going up and down 2 or 3 teeth. But nothing seemed to help.

To me this is definately slower than stock motors! Maybe I should sell it.
I have raced my 13.5 on SAT the first time and I am kinda feel the same like you.....with all the talk about how good is this 13.5 or even faster then the "TEAM" stock motor....it is far from it. I used to gear my Mi2 like 30/116 with 55mm foams...I ran it the same gear ratio, I was way under, and I knew it, just want to try it...back to the pit and gear it to 34/116, gain a little top end...but still, no where near the other "team drivers" stock motor. I ended up gear to 36 (6T over)....apparently, the car stay the same like 34T...I have not try to gear to 40T (10T over like James35 mentioned on his 12th scale).........cause I was worry about thermal cutoff which is not good for the stock rotor on the 13.5 (which is brand new on SAT).

Well....I have to say...I ran the 13.5 for the longest, about 8-9 minutes for practice. about 1 sec off the fastest guy per lap (8.6 ave vs 7.6 ave) with their "tuned" stock motor............the 13.5, on the straight, is no where near the speed of those tunned stock motor...however, it might be because I didn't gear it 10T above the brush motor's pinion which I might try)

Overall....I woudl not say it is a waste of money, no need to cut arm or motor maintainance is a winner for me already. But I don't expect it is still that "FAR" apart from tunned stock motor when others were saying the 13.5 are so much better that it need to be slow down a little.....(may be I am still undergear....may be.)

Run time is defintiely GREAT on this GTB system......and I like the way I can run constantly mid 8s - low 9s per lap for at least 7-8 minutes without showing the motor slowing down, pack after packs (ran 12 packs on the 13.5 in 1 day).

Last edited by Solara; 11-20-2006 at 03:11 PM.
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Old 11-20-2006, 03:10 PM   #1638
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Yep, you are also undergeared when it comes to the 13.5. We already have ten 1/12th brushless stock racers are our local track. We are a little faster than the best 27T brushed racers. In fact, we let brushed racers run with us. We even kept the club rules at a nice low 32oz minimum weight to help out the brushed racers a little more. (It's really hard to get to 32oz with brushless.) We are about 1 oz heavier.
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Old 11-20-2006, 03:26 PM   #1639
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Quote:
Originally Posted by James35
Yep, you are also undergeared when it comes to the 13.5. We already have ten 1/12th brushless stock racers are our local track. We are a little faster than the best 27T brushed racers. In fact, we let brushed racers run with us. We even kept the club rules at a nice low 32oz minimum weight to help out the brushed racers a little more. (It's really hard to get to 32oz with brushless.) We are about 1 oz heavier.
James35, thanks for the advise....I did read your note about the 13.5 on the other thread, but I was kinda stepping it away cause I was thinking there is a different between TC and 12th scale. And I was running as high as 6T over already, thought I was topping the limit..........but for next week, I will pull the 10T or even 12T over (wait...I don't have a 42T pinion...I might have to lower the spur..LOL)

When you said you guys are faster then those who ran Co27...are those Co27 are "stock" stock, or special tunned "stock" motor like EA...?
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Old 11-20-2006, 03:38 PM   #1640
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In a touring car it's a bit different to a 1/12th.

I am running about 3mmpr higher than a good tuned CO27 and it's performance is very close to the same (32mmpr for a CO27 on our track and 35mmpr for a 13.5)

Gear up and check the motor temp at the end of 5 minutes Try to aim for a tad less than 160 degree f at teh end of 5 minutes and you are on teh right ratio
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Old 11-20-2006, 08:40 PM   #1641
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Just got my GTB, I've got a silly question. Would it be okay to make a "Y" type connection for the orange, yellow and blue wires, then have only one wire connect to the negative pole on a brushed motor? Or would I have to have all three wires connect to the negative pole. I just want to make sure before I start snipping wires
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Old 11-20-2006, 10:22 PM   #1642
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I know that you can run a small jumper wire acrossed the underside on the speedo to two of them but I'm not sure which ones. Maybe someone can back me up on this. I've seen it done a few times. Then you only have basically your black and red running to your brushed motor instead of two hots and one black to it. That is the only downfall to brushless, so many wires to tuck and zip tie.
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Old 11-20-2006, 10:45 PM   #1643
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Quote:
Originally Posted by Solara
When you said you guys are faster then those who ran Co27...are those Co27 are "stock" stock, or special tunned "stock" motor like EA...?
I can't say for certain, because we've only had about 10 race nights this season. I know that our local 2nd best (who does very well at the big competitions) ran good on a few race nights and did 60 laps brushed. All other brushed racers were 59 or less laps. And yes, they are very good tuners. I think they start with tuned Putnam motors, and then continue to tune themselves. So far, me and another racer have done 61 laps brushless, and another has done 60. We have room for improvement too. I predict 63 or 64 laps by the end of the season
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Old 11-20-2006, 11:06 PM   #1644
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Quote:
Originally Posted by og_capone
Just got my GTB, I've got a silly question. Would it be okay to make a "Y" type connection for the orange, yellow and blue wires, then have only one wire connect to the negative pole on a brushed motor? Or would I have to have all three wires connect to the negative pole. I just want to make sure before I start snipping wires
This post may also be helpful for making a custom 3 pin connector for easier switching. There is also info on the different methods between the LRP and GTB brushed connections.
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Old 11-20-2006, 11:41 PM   #1645
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Thx James35
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Old 11-21-2006, 07:53 PM   #1646
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Quote:
Originally Posted by heavy
In a touring car it's a bit different to a 1/12th.

I am running about 3mmpr higher than a good tuned CO27 and it's performance is very close to the same (32mmpr for a CO27 on our track and 35mmpr for a 13.5)

Gear up and check the motor temp at the end of 5 minutes Try to aim for a tad less than 160 degree f at teh end of 5 minutes and you are on teh right ratio
If what you said is true....then my 13.5 gearing is wayyyyyyyyy off....then tallest and longest run I had was 36/116 and ran about good 7-8 minutes and when I temp the car at the pit......wooping 108 degree F....and you are saying I should gear to around 160 F.....

Now I know what I will do to the 13.5.....at least, there is a hope there.

P.S....even when I was gearing @ 34/116 (4T higher then what I used to gear on a Co27), the car still has a TONS of torque out of the corner.
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Old 11-22-2006, 12:32 AM   #1647
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http://www.rcinfos.com/2006/2006_11_...touring_28.jpg
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Old 11-22-2006, 01:04 AM   #1648
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syndrome why the pic?

I noticed caps on the motor...is that something needed?
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Old 11-22-2006, 01:12 AM   #1649
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Cooling vents?
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Old 11-22-2006, 07:12 AM   #1650
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Quote:
Originally Posted by Solara
If what you said is true....then my 13.5 gearing is wayyyyyyyyy off....then tallest and longest run I had was 36/116 and ran about good 7-8 minutes and when I temp the car at the pit......wooping 108 degree F....and you are saying I should gear to around 160 F.....

Now I know what I will do to the 13.5.....at least, there is a hope there.

P.S....even when I was gearing @ 34/116 (4T higher then what I used to gear on a Co27), the car still has a TONS of torque out of the corner.
I'm running the 13.5 in my 12th scale and I went DOWN 11 teeth on my Spur just to get it geared right.... I'm probably switching my TC to the 13.5 as soon as Tower has one of their sales....
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