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Old 08-30-2015, 04:32 AM   #1
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Default Good value 21.5?

Having a disappointing run with my Speed Passion, tried a dozen gear ratios but I just can't get enough power out of it, just lacks top end and low punch.

Looking at getting a Skyrc Toro or maybe a Hobbywing motor. Can't spend to much (joint account with the wife..). Any recommendations?
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Old 08-30-2015, 05:41 AM   #2
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Having a disappointing run with my Speed Passion, tried a dozen gear ratios but I just can't get enough power out of it, just lacks top end and low punch.

Looking at getting a Skyrc Toro or maybe a Hobbywing motor. Can't spend to much (joint account with the wife..). Any recommendations?
Hi

Have you looked into Turnigy Trackstar Motors?

I've been reading good feedback on them.

http://www.rctech.net/forum/electric...ar-motors.html
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Old 08-30-2015, 05:48 AM   #3
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I have had three of the Hobbyking 21.5 motors and they were all solid performers and on par with most of the motors available. Hard to beat for the price.
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Old 08-30-2015, 05:53 AM   #4
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I have had three of the Hobbyking 21.5 motors and they were all solid performers and on par with most of the motors available. Hard to beat for the price.
Hi Sir Steve!

I call that practical RC. What's in a name? Right?
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Old 08-30-2015, 06:18 AM   #5
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The Speed Passion is known to be a bit of a slug, the Trackstars do ok but you really need to gear them up, I've had to go to a FDR of around 2.9-3.0 to get them competitive next to some of the higher $ motors.
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Old 08-30-2015, 07:11 AM   #6
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I'm interested too.

I read that the Thunderbolt with blue armature is pretty torquey and quick. It will still push you over $100 though..

Gotta pay to play, I guess.
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Old 08-30-2015, 04:28 PM   #7
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I'll try the Turnigy. Are the red cans better than those X-car motors? I raced one for a while in superstock, lots of low down bite but the top end was a bit 'meh'. I geared it down but high temps became a issue.
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Old 08-30-2015, 10:59 PM   #8
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You want the Red Can ones, I've been trying a V2 21.5 and it seems to be a short stack motor, lower numbers on the motor tester but on the track it feels quite strong even with max timing and speed isn't too bad.
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Old 08-30-2015, 11:07 PM   #9
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They've released the V2 versions which will be Roar approved soon
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Old 08-31-2015, 03:43 AM   #10
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I've been using trackstar motor. I've had two of them. Both very good motors, but they do need to be geared down. Ive had no heat issues with a WTF fan.
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Old 08-31-2015, 03:58 AM   #11
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I've been using trackstar motor. I've had two of them. Both very good motors, but they do need to be geared down. Ive had no heat issues with a WTF fan.
Down or up?

I run an R1 Wurks at 4.0 FDR to be competitive a Trackstar I need to gear around 2.9 FDR
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Old 08-31-2015, 04:56 AM   #12
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Down or up?

I run an R1 Wurks at 4.0 FDR to be competitive a Trackstar I need to gear around 2.9 FDR
Sorry, Should have said geared up. I am running 2.74 for my local track to be competitive, where most are running 2.9-3.4.
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Old 08-31-2015, 06:29 AM   #13
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You want the Red Can ones, I've been trying a V2 21.5 and it seems to be a short stack motor, lower numbers on the motor tester but on the track it feels quite strong even with max timing and speed isn't too bad.
That's interesting. Have you measured the stator yet? I would be interested in those numbers.
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Old 09-02-2015, 10:43 AM   #14
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Quote:
Having a disappointing run with my Speed Passion, tried a dozen gear ratios but I just can't get enough power out of it, just lacks top end and low punch
Did you purchase and install the optional motor timing units?
My SP 21.5t "MMM" motor was anemic w/ the stock +10 sensor unit. I put the +40 sensor unit and the motor came to life. It is a serious power house.
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Old 09-02-2015, 01:34 PM   #15
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Try a + 30 timing board first. Speed passion motor are not slow by any means, but do need the timing board.
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