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Old 05-24-2008, 07:18 AM   #1
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Default LRP 13.5 BRUSHLESS MOTOR

Whats the differance between the Modified X11 13.5 Lrp brushless motor and the Stock Spec X11 2nd generation Lrp 13.5 brushless motor? Apart from the price and color of lable.

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Old 05-24-2008, 09:00 AM   #2
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Originally Posted by blueskieshlg View Post
Whats the differance between the Modified X11 13.5 Lrp brushless motor and the Stock Spec X11 2nd generation Lrp 13.5 brushless motor? Apart from the price and color of lable.

cheers
Stock spec is really for stock races, with less KV than old 1, color coded and homologated by US's ROAR and EU' EFRA.
If race rules of your place is unlimited by homologation, old 1 is your choice.
Let's hear more opinion from other guys around.
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Old 05-24-2008, 09:18 AM   #3
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I think the earlier LRP 13.5 (and, other mfgs 13.5s) featured a rotor that was larger than the size ROAR eventually approved for stock-spec racing.

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Whats the differance between the Modified X11 13.5 Lrp brushless motor and the Stock Spec X11 2nd generation Lrp 13.5 brushless motor? Apart from the price and color of lable.

cheers
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Old 05-24-2008, 03:36 PM   #4
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Crap I might have got the wrong one then. I went with the 13.5 stock spec and will be running with 19T motors.
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Old 05-24-2008, 08:31 PM   #5
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The words "Stock Spec" has nothing to do with being stock. Stock Spec is the legal ROAR and IFMAR motor. It meets all of the new rules. I have an 8.5 Stock Spec. Can I run your stock class club races?
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Old 05-24-2008, 09:04 PM   #6
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Ran the 13.5 "Stock Spec" motor today for the first time, and ran very well with it. I was on pace with a Novak 13.5 and Speed Passion 13.5 from other racers.

As for differences between the 1st and 2nd generation LRP Vector motors, the 1st generation 13.5 LRP motors were not Sintered Rotors, you had to buy the Sintered Rotor in addition to the motor. Additionally, LRP's 1st gen "sintered" rotors were not Nickel Plated, and not the most durable; the 2nd gen sintered rotors are black with a nickel plated magnet.

There are multiple changes with the 2nd gen "Stock Spec" motors that makes them better in my opinion, plus they are the only LRP Brushless motor approved for ROAR racing.
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Old 05-24-2008, 11:26 PM   #7
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So the stock spec 13.5 is better then the modified 13.5? Both show as being a sintered rotor on AE's website.
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Old 05-24-2008, 11:50 PM   #8
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Keep the info coming guys, great to hear your comments. It sounds as if the Stock spec has been designed to meet all rules making it a legal motor for 13.5, but it is not as good as 'modified' 13.5 motors such as Novak ,SPeed passion, orion vortex etc. is this the case?
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Old 05-25-2008, 05:43 AM   #9
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Quote:
Originally Posted by blueskieshlg View Post
Keep the info coming guys, great to hear your comments. It sounds as if the Stock spec has been designed to meet all rules making it a legal motor for 13.5, but it is not as good as 'modified' 13.5 motors such as Novak ,SPeed passion, orion vortex etc. is this the case?
Well I wouldn't say that. The 1st generation X-11 Brushless came with bonded rotors, and as such made less power, 180W compared to 201W for the "Stock Spec" motor, but as with any bonded rotor motor, they turn slightly higher RPM due to a weaker magnetic field. The 1st gen motor turned 24,120 rpm's with a bonded rotor, while the 2nd gen with factory installed Ni plated sintered rotor turns 23,040 rpm's.

To my knowledge, LRP never published power ratings if the 1st gen X-11 13.5 Brushless motor with a Sintered Rotor since it didn't come with one, so the only way to know for sure would be back to back track comparison's.
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Old 05-26-2008, 01:03 AM   #10
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Well I ran mine today and wow was it quick. I was a tooth smaller then the guys running 13.5 Novak motors and was easily as quick if not quicker in top end and acceleration. Took TQ and the win in our 1/12th class with the motor against a few 13.5 Novaks and a bunch of 19T brushed motors. Just an FYI the reccomended gearing for me was conservative to the extreme...I think the reccomended for 4 cell 1/12th was around a 56mm roll out and I ended up running just shy of a 65mm roll out.
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Old 05-26-2008, 07:59 AM   #11
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i have to agree with InspGadgt, I ran kn7671's 17.5 saturday in 1/12 and had to gear one tooth down from the novak 17.5 with a 80mm roll out it was a little warm(170) and slow out of the corners. I went down one tooth to a 78.1mm roll out and the thing had plenty of rip and was just as fast. at the begging of the race, the car had a little too much rip out of the corners, I had to roll on the throttle a little more then with the novak, but going up to 80mm rollout, it was a little slow out of the corners. so the motor maybe a little more sensative to heat then the novak.
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Old 08-18-2008, 05:51 PM   #12
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I have a 13.5 but the thing seems to clog up when the throttle is applied. I through in my 17.5 and that motor goes good. I put the 13.5 in and it doesn't want to go. Is there something I can try or is the motor shagged. I have even changed sintered rotors and it does the same thing.
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Old 08-18-2008, 10:32 PM   #13
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Double check your timimg. The ring may have lossened up and is now retarded. This will cause the motor to feel like it is clogging. Just a popssibilitiy

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I have a 13.5 but the thing seems to clog up when the throttle is applied. I through in my 17.5 and that motor goes good. I put the 13.5 in and it doesn't want to go. Is there something I can try or is the motor shagged. I have even changed sintered rotors and it does the same thing.
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Old 08-18-2008, 10:55 PM   #14
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Quote:
Originally Posted by woozer71 View Post
I have a 13.5 but the thing seems to clog up when the throttle is applied. I through in my 17.5 and that motor goes good. I put the 13.5 in and it doesn't want to go. Is there something I can try or is the motor shagged. I have even changed sintered rotors and it does the same thing.
1. make sure youre not overgeared/timing is too high
2. make sure the sensor harness is not damaged/and it plugged in all the way
3. make sure youre solder connections are good

just some suggestions
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