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Old 02-14-2009, 06:19 PM   #1
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Default 540 (Johnson) Motor Gearing

My motor is getting incredibly hot and as I have heard it is not that good. I currently have a 96T spur and 58T spur but the motor is still getting really hot.

What can I do?

It was recommended for the track I run a 41mm rollout, currently I have a 46 rollout.
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Old 02-14-2009, 06:28 PM   #2
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change the 58t to something smaller to lower the rollout
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Old 02-14-2009, 06:32 PM   #3
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i had a 48T in but the motor was still getting really hot.
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Old 02-14-2009, 08:15 PM   #4
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Whe you say hot. What do you mean? If you are around the 140f mark you should be fine. Going down in spur teeth will give you a higher rollout. Same goes if you increase your pinion.
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Old 02-14-2009, 08:30 PM   #5
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Hot as in it hurts to put my finger on the motor, I don't know the exact temp and I have yet to run the car in a race. (things keep getting lost and breaking, lost a ball bearing and just now one of the wires attached to the on/off switch detached)
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Old 02-14-2009, 10:08 PM   #6
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dude, what car are you running? motor overheats due to over geared ratio, Johnson 540 can gear tall for higher top end but not over doing it.
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Old 02-14-2009, 11:14 PM   #7
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I got a Cyclone S.
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Old 02-15-2009, 03:07 AM   #8
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If you have the standard centre pulleys that come with the Cyclone S (16T) then your cars internal ratio is 2.437.

Then you should get 48pitch gears , it sounds like your pinion & spur and 64pitch


In 48 pitch (which are easier to get Locally) you should get a 68Tooth Spur Gear(the big one) and a 36 Tooth Pinion gear (one on the motor).

this will give you a rollout of 43mm.

Eventually you should get more pinions in 48 pitch pinions to adjust ratio if needed, like get say a 34t, 35t, 37t, 38t, 39t.


this will get you all the rollouts that will ever be needed for 540 silver can racing.

Also if you are new and built the car yourself, get a local racer to check it out for you , because it sounds like a cvd or belt or bearing or something may be binding in the car which will be loading the motor and overheating it no matter what rollout you run.

You should be able to run up to a 45-46mm rollout without over heating your motor, so something must be binding, or the motor is already tosted.

Are you running the Johnson grey ended motor? or the johnson chrome can with a black end?

The cyclone can not run a gear combo lower than a total of about 101 tooth when you add the pinion and spur teeth together When running 48 pitch gears off course.

this should help you out.
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Old 02-15-2009, 05:24 AM   #9
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Thanks Losi, umm yea I have the grey end bell and I have checked nothing is binding, that was my first thought. I'll check it out some more I don't think the gear meshing is that nice so I'll get some smaller gears in 48P range. 64T and 36T.
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Old 02-15-2009, 05:31 AM   #10
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It's really smooth if I take out the pinion and I have checked both belts, they are fine and un-obstructed. It could be the motor, I do have another so I might try that one.
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Old 02-15-2009, 05:19 PM   #11
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Quote:
Originally Posted by rcdude8 View Post
Thanks Losi, umm yea I have the grey end bell and I have checked nothing is binding, that was my first thought. I'll check it out some more I don't think the gear meshing is that nice so I'll get some smaller gears in 48P range. 64T and 36T.
Get a 48pitch 68 Tooth Spur and a 48 pitch 36 Tooth pinion

Dont get a 64 Tooth!!!!!!!!!!!!!
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Old 02-15-2009, 10:38 PM   #12
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Got ya.
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Old 02-17-2009, 04:26 AM   #13
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the joys of being a noob, i remember when i made those mistakes.....
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Old 02-17-2009, 04:30 AM   #14
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Oi Sage shouldn't you be working
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Old 02-17-2009, 05:13 AM   #15
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Quote:
Originally Posted by Ricky/C View Post
Oi Sage shouldn't you be working
The both of you should be working
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