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Old 08-28-2006, 09:12 PM   #1
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Default Motor temp?

What sould the temp be of a 19t motor or a stock motor be when i come off the track?I want a temp that will be in the power range.I also have a question should i go down or up in teeth to make my motor run cooler?A little off topic but when tires get smaller do you go smaller or bigger in gear and how often?thx
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Old 08-28-2006, 09:31 PM   #2
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Gear so your car tops out a little bit before the end of the straightaway. You will want to put a bigger pinion on to compensate for foam tire wear.
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Old 08-29-2006, 06:30 AM   #3
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Any one have a temp range though?
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Old 08-29-2006, 06:34 AM   #4
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Try to keep them under 200

Seriously, try to stay under 170, and that is pushing it. The hotter the motor gets, the quicker the magnets will fade.
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Old 08-29-2006, 06:59 AM   #5
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Also when they get hot, dont cool them too quickly. Putting a motor cooler on a hot motor will kill it. Allow it to coll slowly then when its only warm then you can switch the motor cooler on.
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Old 08-29-2006, 11:01 AM   #6
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Having a little DC Fan for kooling motors after your race is a good idea!
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Old 08-29-2006, 11:20 AM   #7
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Default Temps

Mine come off the track between 150 and 170 degrees F. I gear for top end
about 1/3 - 1/2 down the longest straight.

Pull your brush springs and inspect the brushes - if they discolor from heat
you're too hot or on the edge. They may turn dark and look toasted

Don't shoot cleaner into a hot motor, cool it off slowly

On plain bearings - make sure you use some oil for each runs at both ends
makes a huge difference IMHO.

This whole gearing thing is a big deal - you can under gear and really heat your motor as much as too large a gear and lug the motor till it heats up too much. - Every motor has a sweet spot.
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Old 08-29-2006, 05:47 PM   #8
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Default Motor temp~

At the club I run at we run our stocks up to about 180 -190. That is where we find they work the best. Different motors will be more efficient and have a higher power band obviously at different temps but that is our oppinions. Also for your gearing and tire size. You need to check your roll out. Your gearing will change when your tire size changes but you dont want to be guessing. Your roll out will give you almost exact measurements for gearing.

If some one has the rollout calculations could you post it for this guy. Thanks all.
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Old 08-29-2006, 06:22 PM   #9
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Quote:
Originally Posted by spesh
If some one has the rollout calculations could you post it for this guy
Tire Diameter X 3.14 / FDR (Final Drive Ratio) = Rollout
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Old 08-29-2006, 06:43 PM   #10
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www.gearchart.com excellant for getting a rool out chart ....
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Old 08-29-2006, 08:21 PM   #11
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I like gearchart.com but is hard to use on the road unless you have a laptop at the track.
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Old 08-29-2006, 08:23 PM   #12
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...Or you can use a printer...
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Old 08-29-2006, 08:30 PM   #13
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yea... didn't think about that
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Old 08-29-2006, 09:15 PM   #14
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Quote:
Originally Posted by BSchorr
...Or you can use a printer...


owned!
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Old 08-29-2006, 10:14 PM   #15
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Talk about motor temp.....my Epic Binary Stock Roar just gave me something that I have never experienced before....I got this motor awhile ago but never open it from the package, so it is new.............mounted on a Mi2EC and gave it some simple run, gear at 28/116 and most ppl think it is on the average/safe side.......3 minutes of some easy running, already smell something is burning, temped the motor, wooping 200 degrees.........

At first, I thought I am under....gear it to 30....even worst...almost 275 within 2 minutes of running. I am sure the motor (at least the brush) is damaged now.

Before I open up the motor and do the inspection, what would cause the motor to get that high temperature? I am using a Novak GT7, I don't think it is the ESC, but do you guys think some of those GT7 profile that I did might be too much for stock motor and cause to overheat the motor? Does that make sence...? Electric motor is not something I do....I only know how to shim engine when using 30% and know when to use what glow plugs...

Thanks for the advise in advance....
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