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Old 11-09-2010, 08:53 AM   #181
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Default 17.5 motor

I just received a 17.5 1C spec Murfdogg brushless motor to run in 12th scale, and I've had nothing but problems with this motor.

It stalls from a dead stop, coggs and is way slow. I changed sensor wires, reduced "boost and turbo" settings on my Tekin ESC and changed gearing to try to fix the problem. I did not change the timing on the motor either.

All my other 17.5 motors from Trinity, ORCA and Speed Passion run strong with no problems.

Is there anything else I can do to fix this problem? or do I have a $100 dollar paper weight.

Greg G
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Old 11-09-2010, 09:36 AM   #182
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Quote:
Originally Posted by Swampracer View Post
I just received a 17.5 1C spec Murfdogg brushless motor to run in 12th scale, and I've had nothing but problems with this motor.

It stalls from a dead stop, coggs and is way slow. I changed sensor wires, reduced "boost and turbo" settings on my Tekin ESC and changed gearing to try to fix the problem. I did not change the timing on the motor either.

All my other 17.5 motors from Trinity, ORCA and Speed Passion run strong with no problems.

Is there anything else I can do to fix this problem? or do I have a $100 dollar paper weight.

Greg G
since you are using a tekin did you use the onboard sensor checker to make sure the sensor is working
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Old 11-09-2010, 09:38 AM   #183
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Default Nope

I didn't try that yet. If the sensor is gone can it be replaced?
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Old 11-09-2010, 09:58 AM   #184
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from what i have seen in most yes they can
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Old 11-09-2010, 10:24 AM   #185
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I have had the sensor board go bad in my speed control before but if all your other motors work then I would "PM" Matt directly to see what can be done.
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Old 11-09-2010, 02:55 PM   #186
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Smoke is talking about the sensor board in the motor, not the speedo.
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Old 11-09-2010, 03:13 PM   #187
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Originally Posted by Swampracer View Post
I didn't try that yet. If the sensor is gone can it be replaced?
I would check the sensor with the onboard checker like smoke said. I had a duo 1 go bad and do exactly what you are saying. It can be fixed.
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Old 11-10-2010, 05:42 PM   #188
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Quote:
Originally Posted by tunerjetta29 View Post
Any 21.5 motors?
No plans on production 21.5 motors yet... just starting to build some prototypes.

Quote:
Originally Posted by Swampracer View Post
I just received a 17.5 1C spec Murfdogg brushless motor to run in 12th scale, and I've had nothing but problems with this motor.

It stalls from a dead stop, coggs and is way slow. I changed sensor wires, reduced "boost and turbo" settings on my Tekin ESC and changed gearing to try to fix the problem. I did not change the timing on the motor either.

All my other 17.5 motors from Trinity, ORCA and Speed Passion run strong with no problems.

Is there anything else I can do to fix this problem? or do I have a $100 dollar paper weight.

Greg G
Please do not be so negative Greg.... I hope that if anyone has any issues with my products, that they contact me directly instead of posting questions about their new $100 paperweight.

Sounds like a hall sensor went out. It happens.... with all brands of motors.

Send it in to me so I can diagnose the problem.

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Originally Posted by Swampracer View Post
I didn't try that yet. If the sensor is gone can it be replaced?
ABSOLUTELY

Matt
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Old 11-18-2010, 03:13 PM   #189
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Default New Products!

MurfDogg Racing is proud to announce a new addition to its race winning line of products:

Ceramic Bearing Sets and Silicon Nitride Diff Ball Sets!

Part # Description Price

CBS-12 - Ceramic Bearing Set for Pan Cars with 1/8" Front Axles $44.99

CBS-13 - Ceramic Bearing Set for Pan Cars with 3/16" Front Axles $44.99

CBS-11 - Ceramic Bearing Set for MurfDogg Synergy Brushless Motors $10.00

CBS-10 - Ceramic Bearing Set for Custom Works Dirt Oval Cars $69.99

CBS-14 - Silicon Nitride Diff Balls - 1/8" for Pan Cars (12) $10.00

CBS-15 - Silicon Nitride Diff and Thrust Balls for Dirt Oval Cars and $15.00
All Team Associated Ball Diffs (12 - 3/32" and 6 - 5/64")

Each Silicon Nitride Ball is precision ground to the tightest tolerances possible, ensuring you the hardest, smoothest, roundest ball you have ever used. You want a SMOOTH Differential, these balls are your answer!
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Old 11-18-2010, 03:21 PM   #190
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hey matt sound good about your new balls. lol

i will send you an email or pm ummm
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Old 11-19-2010, 12:14 AM   #191
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Quote:
Originally Posted by Swampracer View Post
I just received a 17.5 1C spec Murfdogg brushless motor to run in 12th scale, and I've had nothing but problems with this motor.

It stalls from a dead stop, coggs and is way slow. I changed sensor wires, reduced "boost and turbo" settings on my Tekin ESC and changed gearing to try to fix the problem. I did not change the timing on the motor either.

All my other 17.5 motors from Trinity, ORCA and Speed Passion run strong with no problems.

Is there anything else I can do to fix this problem? or do I have a $100 dollar paper weight.

Greg G
Greg,
Received your motor today, hooked it up to the magical motor machine, which told me that the sensor board was bad. Replaced it, hooked her up to the machine again, and all 3 sensors were firing correctly. I put her on the dyno, and she sang! I packaged her back up, and she is ready to rock!

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Originally Posted by cyrrus View Post
hey matt sound good about your new balls. lol

i will send you an email or pm ummm
I got the hardest balls around.... thats for sure!


ALL PM's REPLIED

Matt
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Old 11-19-2010, 12:19 AM   #192
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First peek....
Attached Thumbnails
MurfDogg Synergy Brushless Motors-dsc01982.jpg   MurfDogg Synergy Brushless Motors-dsc01984.jpg   MurfDogg Synergy Brushless Motors-dsc01987.jpg  
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Old 11-19-2010, 12:24 PM   #193
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Default Check PM's pls

Hi Matt,

Thanks for getting to the motor so quickly!! I sent you a PM about the bearings and diff balls.

Best regards,

Greg G
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Old 11-19-2010, 01:13 PM   #194
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PM's returned
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Old 11-19-2010, 02:50 PM   #195
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Matt's a good guy that stands behind his products!!
And now he's got STEEL BALLS TOO!!!
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