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Old 07-14-2008, 01:30 PM   #1021
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Old 07-25-2008, 06:48 AM   #1022
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Default Motor Zapper

Anyone really and I mean ''really'' experienced with those?

I've seen big numbers on a fantom dyno, like 19000 rpm at 5 volts, and 840 for torque, very impressive.

If you had a good or bad experience with the zapper, share it with your friends on this forum.

Have a nice day
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Old 07-25-2008, 08:20 AM   #1023
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if your front bushing seems lose with slop from being used or old.

i know a technique on how to tighen that bushing front and rear. BUT it only last 3 runtimes then to my technique again. it might be a waste of time but if you want more life out of that ol'motor then i don't knoo!
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Old 07-25-2008, 09:25 AM   #1024
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Excuse from my disturb and curiosity!
Could anybody tell me if have tried to compare with 17.5/21.5 stock spec BL with the conventional 540J on the same track, really the BL has enormous advantage?
In the case i have heard(not sure, due my uncapability in chinese)in HK and somewhere in China, which has allowance to racing in silvercan class the BL motor within 3000KV.
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Old 07-25-2008, 10:10 AM   #1025
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Here's some interesting Mabuchi motor facts from another site/author, edits by me in <> and at the end --

"Mabuchi make (and made) many, many different versions of the 540 motor. Unfortunately since it is actually an industrial fractional hp dc motor, they are primarily classified by their output and consumption rather than the winds, which RC racers are more familiar with.

The coding schema used by Mabuchi is quite simple, and there are basically 3 types of motor that look very similar externally, and only their code number can identify them:

The RS-540SH series is the one typically used in RC car kits and this comes in 3 versions, the 5045, 8023 and the 6527 <I've also heard 5722>. Where the first 2 digits describe the wire diameter: 50 = .50mm etc and the last 2 digits the number or turns: 27 = 27T etc.

You will need to look at the motor label/number to know which you have, the RS-540SH-6527 being the typical one put into the Japanese RTR kits etc....... and is the 27T motor. They do other (and lower wind motors) but these were marketed under the "Dyna" name.

The can finish only designates the motors original intended market, matt tin plate finish for industrial use (tools etc) and nickel plated for toys, including RC cars.

You won't actually find the RS-540SH-6527 <or 5722, they only list the 5045> in the Mabuchi information though which does make it confusing!"

They also make an RS-540RH-5045 in the same can package as the RS-540SH-5045, but the RH motor is 2.5K-3K rpm (or about 1/3) faster than the SH at 6.0 - 7.2 volts!
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Old 07-25-2008, 12:02 PM   #1026
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I'm on shakey ground here, but I think most of us run the 540-J motor rather than the SH. The SH is significantly slower IMO. Also the 540-J seems to have a couple of different variations. The J's respond to "tuning" better and the SH just blows up.
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Old 07-30-2008, 08:54 AM   #1027
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So nobody is answering that post?

I guess everybody is running ''legal 540'' ???

I tought it would start something between fellow racers

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Old 07-30-2008, 11:29 AM   #1028
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Quote:
Originally Posted by Starteur View Post
So nobody is answering that post?

I guess everybody is running ''legal 540'' ???

I tought it would start something between fellow racers

you can zap it, but it'll pretty much kill the torque of the motor for touring cars. for mini IT MIGHT work, but ive never driven a silver can in a mini before.

yes you'll get stupid amounts of RPM, but at the trade off for torque.
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Old 07-30-2008, 12:52 PM   #1029
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Quote:
Originally Posted by rccardr View Post
Yeah, well, that guy was much younger and less educated then- plus he was dealing with a four vent Johnson.

Now that we've got higher quality comm drops and two-vent motors (where you can actually view the comm and brushes), we know that water dipping improves the brush-to-comm contact patch, but at the expense of damaging the comm surface.

And back then, a good Johnson ran maybe 14,000 RPM at 5 volts on a modern dyno. Now we get almost 17,000 pretty regularly, with about the same torque characteristics.
Doc,.... sent you an email.

- chris
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Old 07-31-2008, 07:18 PM   #1030
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LAST CALL FOR RED DOTS!!!

If you want a Red Dot silver can motor for the TCS race in CT next weekend , let me know NOW or they will not ship in time to reach you before the event!

Also, since the TCS Nats are coming up, I'll be kinda busy getting ready and will nto be turning out as many motors as usual. Bottom line: don't delay, order today!

For fastest service, shoot me an e-mail at [email protected].
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RED DOT MOTORS- Fastest Titan 12T and silver can 540 motors in the known galaxy!
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Old 08-16-2008, 05:52 AM   #1031
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So how did you do DOC?
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Old 08-16-2008, 07:37 AM   #1032
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The US Nats are next weekend. But based on the calls and e-mails I'm getting it's going to be a super competitive Mini racing weekend!
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Old 08-19-2008, 08:56 PM   #1033
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Well best of luck to you Doc, and to all the guys using your motors!!
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Old 08-20-2008, 05:19 AM   #1034
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Thanks, but the TCS gods have effectively removed the motor from the equation by decreeing that all motors must remain in tech impound unless they are installed in your car for your heat or Main. They are not allowed back into the pits, so -in theory- all motors will have pretty much the same performance. Should be interesting!
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Old 08-21-2008, 03:21 PM   #1035
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Default 540 m0tors

just wondering i have a dyno that measures in rpm and amps.Does the amp reading have anything to do with performance ie higher amps =more tourqe?
thanks
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