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Old 02-21-2006, 12:27 PM   #16
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hey gary... can i have your secrets?

lots of good stuff here... time to go home and try some of this stuff.
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Old 02-21-2006, 01:30 PM   #17
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I recently bought a Fantom Dyno, and when learning to use it I played with my silver can 2 Hole, and 4 Hole motors. I had also gone to the hobby store and bought a brand new 2 hole Johnson.

Here are the results of the 4 motors I own, and have dyno'd.

Johnson 2 Hole (Waterdipped)(two hours total/rev then forward)
RPM: 10,[email protected]
Power: [email protected]
Eff: 38%@7.7K
Torque: 75.7Nmm

Johnson 2 Hole (Un-Dipped)
RPM: 11,[email protected]
Power: [email protected]
Eff: 39.7%@7.5K
Torque: 80.1 Nmm

Johnson 4 Hole (Waterdipped)(one hour total/rev then forward)
RPM: 11,[email protected]
Power [email protected]
Eff: [email protected]
Torque: 84.4 Nmm

Johnson 4 Hole (Waterdipped)(20 min total/rev then forward)
RPM: 11,[email protected]
Power: [email protected]
Eff: [email protected]
Torque: 84.5 Nmm

As you can see water dipping has adverse Dyno effects on these motors, and apparently the 4 hole motors do offer more RPM, and Torque if you can find one, as they are no longer in production. I would suggest keeping the bushings oiled, and keep the motor clean for optimal performance.
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Old 02-21-2006, 01:35 PM   #18
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Quote:
Originally Posted by Hebiki
hey gary... can i have your secrets?

lots of good stuff here... time to go home and try some of this stuff.
Why, do you want to go slower or something? Remember, I haven't had any speed at TA the last 2 years compared to you TAOB guys or Johnny Pantload
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Old 02-21-2006, 03:04 PM   #19
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Quote:
Originally Posted by RCGaryK
Why, do you want to go slower or something? Remember, I haven't had any speed at TA the last 2 years compared to you TAOB guys or Johnny Pantload
pantload. i still remember that one weekend before nats. he was practicing with a black can... and he didnt know we were racing with silvers.

dont sell yourself short. you BARELY missed the "A" with a brand new car with no practice or set up.
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Old 02-21-2006, 04:51 PM   #20
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I saw some serious 'tweeking' at a Tamiya race once. Standard 540 silver can was doing around 19,000 on this motor checker, tweeked on was pushing out 27,750. Needless to say it wasn't legal and the driver got an early bath!!!
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Old 02-21-2006, 05:08 PM   #21
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Quote:
Originally Posted by Hebiki
pantload. i still remember that one weekend before nats. he was practicing with a black can... and he didnt know we were racing with silvers.

dont sell yourself short. you BARELY missed the "A" with a brand new car with no practice or set up.
Well, certainly didn't hurt having Jun build the chassis too...
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Old 02-21-2006, 06:16 PM   #22
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Default Mabuchi 540 motor

Hey guys!, I was thinking of pulling the armature out of the silver can to clean the commutator. If I get this back to the motor and re-seal the endbell, will this be ok for the TCS if they inspect the motor?
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Old 02-21-2006, 06:44 PM   #23
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Quote:
Hey guys!, I was thinking of pulling the armature out of the silver can to clean the commutator. If I get this back to the motor and re-seal the endbell, will this be ok for the TCS if they inspect the motor?
Uh, no.
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Old 02-22-2006, 02:40 AM   #24
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Originally Posted by macgyver1432000
Hey guys!, I was thinking of pulling the armature out of the silver can to clean the commutator. If I get this back to the motor and re-seal the endbell, will this be ok for the TCS if they inspect the motor?
thats pretty funny.

Quote:
Originally Posted by RCGaryK
Well, certainly didn't hurt having Jun build the chassis too...
should have asked for a set up too!
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Old 02-22-2006, 04:07 AM   #25
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I recently join Tamiya Asia Cup in Indonesia. We all use Mabuchi Sport Tune ( Black Can ), TEU-101 ESC, and Tamiya SP1400 batts. Some of my friends did water break in method, while some didn't do such ritual including myself.

Here is the result : There is no concrete evidence to prove water break in motors give more top speed compare to totally fresh motor drivers. All cars were running almost the same top speed.

Driving skills and ability to drive at racing lines ( quickest lines ) are the major factor to podium finished.
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Old 02-22-2006, 12:22 PM   #26
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The fastest Johnson (2-hole) I have is one I've simply raced and kept clean for all of last year (5 canadian TCS races, plus other races/practices). Brushes are fully seated now, I've cleaned it after each heat with brake cleaner (especially after an outdoor race), keep the bushings oiled, and that's it, no special ritual before using it straight from the package.

On my APS, it does 5900 RPM at 2V, .9A, and 20500 at 7V, 1.3A.

I've just heard of and tried the brasso trick, and it does keep the comm shiny clean, but no actual gains I've seen so far, as were the Peak Comm drops I've used recently.

Other Johnsons I have only do 4300/16500 respectively, but they're all pretty new, with unseated brushes. I may try dipping one to see how it goes. It may wear down the brushes faster than my year-long process, but that's pretty well it.

The Canadian TCS rules for Mini limits [email protected] for silver cans on a motor tester with no load, but the only time I've had a silver can do that is because it was ultra-dirty and grimed up from several races. Once clean, it goes back down to the usual amp draw.
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Old 02-22-2006, 12:38 PM   #27
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hi there guys
so what is the best method of getting the standard sliver can to be quick?
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