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Old 10-16-2010, 06:15 PM   #1441
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off topic, .... but is there something wrong with this thread?
I keep receiving messages in my e-mail inbox, indicating that new posts have been done in this thread but whenever I visit the forum, I can't see these new posts in this silvercan-thread??
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Old 10-16-2010, 09:55 PM   #1442
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off topic, .... but is there something wrong with this thread?
I keep receiving messages in my e-mail inbox, indicating that new posts have been done in this thread but whenever I visit the forum, I can't see these new posts in this silvercan-thread??

Same for me
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Old 10-20-2010, 02:23 AM   #1443
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For those who use a Tekin FX/FXR. Do I still need to use the power cap for silver cans?
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Old 10-20-2010, 09:53 AM   #1444
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For those who use a Tekin FX/FXR. Do I still need to use the power cap for silver cans?
probably not, but I would. Mine got knocked off in a crash and went unnoticed for awhile. There was no damage, but why chance it?

PS I crash a lot.
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Old 10-20-2010, 10:22 AM   #1445
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For those who use a Tekin FX/FXR. Do I still need to use the power cap for silver cans?
Yes, it's good practice regardless of the motor.
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Old 10-20-2010, 03:36 PM   #1446
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Yeah I guess your right. I was just being lazy
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Old 10-22-2010, 12:39 PM   #1447
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Default Silver Can..and Motor Master

5 540j motors (used), RPM motor holder, Much More Motor Master for sale. PM me for details. or visit here:

http://www.rctech.net/forum/r-c-item...40js-more.html
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Old 10-31-2010, 09:40 PM   #1448
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Default comm drop ingredients, and recommendations

RCCARDR,

I'm curious as to what comm drops you would recommend. I have a bottle of break in comm drops, but I don't know if this is good for use after break in. Should I be using a different comm drop before a run, after break in? Also, with BL motors being the mainstream now, the availability of com drops is more limited than it used to be. Is it possible to make my own com drop solution? Could you tell me what comm drops generally are made up of. If this is one of your trade secrets I'll understand, but I'd like to see if I can make my own. Like Granpa has stated before, part of the fun is tinkering with the motors.

Thanks

Ben
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Old 11-01-2010, 05:36 AM   #1449
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We recommend VooDoo drops- actually a slot car product.
You can buy them direct on eBay.
Use...sparingly.
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Old 11-21-2010, 09:42 PM   #1450
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Default sluggish and slow after 4-5 laps

I don't know if this question has already been answered or not, but I'll give it a shot and see if anybody has the info. I run a 540J at my LHS/track. When I am driving, it seems as though the first 4-5 laps are fairly quick and keep pace with everybody. But, suddenly, the motor just seems to turn sluggish and have no speed or punch at all. The motor is not very old and I do clean it after race day. The only thing I have done differently recently was to clean it the night before race day. Other than that, it has been fine. Is there any way to return this motor back up to speed?
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Old 11-22-2010, 12:16 AM   #1451
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Quote:
Originally Posted by ewashburnaf View Post
When I am driving, it seems as though the first 4-5 laps are fairly quick and keep pace with everybody. But, suddenly, the motor just seems to turn sluggish and have no speed or punch at all
I can think of a few possible reasons:

- you are overgeared (ie. rollout is too high) and you are overheating the motor. The motor starts getting hotter until it reaches a critical temp and starts slowing. Can be quite dramatic. Rule of thumb is that when you finish and you can't touch the motor for 5 sec, you are overgeared. Bigger or more efficient heatsink may help. If too hot then start dropping teeth from the pinion and test.

- battery going off

- are you using comm drops ? These can give a punch for the first few laps and then "wear off"


My guess would be overgearing. Very common.
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Old 11-22-2010, 12:21 AM   #1452
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Does anyone know if you can still buy Zubak's Speed Juice comm drops from anywhere?

I have been using my stash in 540 racing and am about to run out. The speedjuice website is down, probably for good. I have found an offroad RC website that references them and am checking if they have any stock but would be interested to know if anyone knows a reliable source.

Thanks
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Old 11-22-2010, 02:41 AM   #1453
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You guys make mention not to overheat your motor as it can damage the magnets.

Im running a TT01 in a 540 class where stock gearing has to be retained and the motor is boiling, can hold my fingers on it for more then a few seconds..

Its bearing raced and has no binding, I do run a heat sink but am kinda stumped otherwise, I do guess that the motors cost bugger all to replace lol
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Old 11-22-2010, 07:31 AM   #1454
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Another thing to watch out for when they get that hot are the magnets shifting (sliding toward the com) in the can and the com.getting pushed toward the pinion (happens more in F1).

I think the motors get to critical temperature and any slight bump will shift things around.
We have a fleet of junk 540j's at the track to prove it.

Btw...not sure if any of you motor guys offer a service to reset the com. and magnets (not sure if it can be done at all) but if you do I think I have some customers for you.
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Old 11-22-2010, 08:25 AM   #1455
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I have seen guys running a spacer on the motor shaft to keep the comm from shifting. Might not be a bad idea.
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