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Old 02-09-2005, 02:12 PM   #3301
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It can't be over-geared some guys gear their 12t at 6.2/6.5 with no heat problems

I used to gear my 12t 6.8 on my Evo3 Sl and had no heat prob at all and the motor could handle higher gearing easily

The 12 turns I use are specially made for big tracks and High gearing

My gearing is lower than my frends but my motor is runnig much warmer

I tried 7.32 still got very hot after 3mins and the car was to slow

MartynD, should I change the diff shimming so when I turn the wheels the drivetrain stays free without any noise?

Thanks, Will

Last edited by Tbevofreak; 02-09-2005 at 02:41 PM.
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Old 02-09-2005, 02:47 PM   #3302
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Default Motor Temp

I have found out that one carpet my motors are running fairly hot anyway i go. I mean I know Im not over geared, if I was to go any lower the car feels flat, with nothing on the bottom. And this is running stock. In mod I would expect it to be even worse. You gotta look at all the pros runnin fans on their mods. The winds on todays motors are getting faster by the model, and the same with the cells. I would just think that naturally the motors would be running a little hot. I cant keep my finger on my motor more than a few seconds, but nothing is wrong with it, I actually think its getting better. My only question is, how do the Japanese racers who race 8 min, manage to keep a 8-10 turn mod anywhere near cool (or not blowing up) running for that long?

Have you tried running your motor in your friends car? Mabey its the car, mabey its the motor. Its worth a try.
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Old 02-09-2005, 03:09 PM   #3303
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Default fan

ya does the fan make a real big difference? i heard like by 10degrees?i may have to get one! coller motor=faster motor!
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Old 02-09-2005, 03:10 PM   #3304
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Same motor geared the same on my Evo3 Suri runs way much cooler and I can't see whats wrong with my TC4...I'll be installing a fan soon but the motors are so hot it won't help that much

I love the idea of trying to run Mod for 8 mins!
I'm sure Japanese drivers are very careful on how they use the throtle during such a race like in old days with 1700mah batteries!
They use same cooling system as any other drivers in the world I guess
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Old 02-09-2005, 03:18 PM   #3305
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I've run an MVP, a Reedy Quad mag, and a C2 in my car so far all run hot (with decent batteries... with the old 1500 stick packs the 19's wouldn't get more than warm +)

All run hot. My quad mag geared to 7.5 even gives off a burnt smell. The track just changed layouts, prior to the layout change I was running my C2 geared to 6.92 and it was hot (not as bad) but the layout was more open.

I will go as low as 7.83 and see what happens with the quad mag.

Up to you TBevo, check your gears for wear, I'm leaving mine as is for the time being, but you might want to consider putting 1 shim on one side of the diff and see if it helps your noise.
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Old 02-09-2005, 07:52 PM   #3306
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Yea I just think in this car the motors are running a little hotter. Just temp them anything up around 180-200 degrees could be harmful.
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Old 02-09-2005, 09:34 PM   #3307
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just make the motor hole bigger . thats what i think and it will solve the problem.
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Old 02-10-2005, 06:14 AM   #3308
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I am going to try the duct I think, will give a slightly better base to attach my ESC as well
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Old 02-10-2005, 06:18 AM   #3309
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What is also pretty cool about the duct kit is that if you mount your electrics carefully you can actually lift them all out in one go.

I screwed in the duct kit, servo taped the bits down and then removed it all for easy soldering

Andy
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Old 02-10-2005, 09:00 AM   #3310
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Default Re: fan

That AE fan kit definitely does make a substantial difference in motor temperature. I've been told it's on the order of 20 degrees (f) or so.

I know that when I take my car off the track, the monster stock i'm running is definitely cooler... like it's no longer at all too hot to touch. And that's with a .960" rollout... so it's not massively undergeared.

Also, there's been no noticable difference in runtime... despite the slightly increased current draw from the fans.

I thought it was a neat addition


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Originally posted by crACkeD ChaSsiS
ya does the fan make a real big difference? i heard like by 10degrees?i may have to get one! coller motor=faster motor!
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Old 02-10-2005, 02:42 PM   #3311
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i heard when using the fans you can gear roughly 2 teeth higher than normal....ill be using the duct and fans for the first time a week this weekend...hope it as worth the 25 quid or what ever it cost
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Old 02-10-2005, 03:52 PM   #3312
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I was told by a couple of drivers that if you use the 2 little fans without the duct system it doesn't work that much, the fans only help to get the air in the right direction, its the duct system that gets the necessary air flow to cool down the motor, the fans make it more efficient

The duct/fan kit is definately a grate upgrade!

But I'm sure there's something that makes my motor run hotter in my TC4 cos they never got so hot in my Evo3....perhaps the chassis is not flat?

See ya!

will
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Old 02-10-2005, 06:25 PM   #3313
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i just bought me a new tc4 and i was wondering does it help out if i buy and use the new tc4 bmi top chassis brace

thanks
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Old 02-10-2005, 06:48 PM   #3314
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In theory the BMI top plate should work excellent. On carpet you want your car as stiff as possible. It helps corner speed and to prevent scrubbing speed. I dont have one but plan on too ordering one in the next few weeks. If your running on carpet, Id say its the way to go.
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Old 02-10-2005, 06:55 PM   #3315
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I'm also considering the BMI top plate.

I was just wondering, how much will the top-plate stiffen the chassis ? Will there be a difference in stiffness when running the top-plate with the Carbon or Composite chassis? I guess I should wait for an answer when more people actually get it and test it.

Thanks,
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