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Q4 of 2015 17.5 Motors ideas

Q4 of 2015 17.5 Motors ideas

Old 11-14-2015, 06:03 PM
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Default Q4 of 2015 17.5 Motors ideas

Hi all,

Running Touring Car 17.5 Blink no boost class and returning to race this year. I raced some offroad already this summer and 2 weeks of carpet onroad.

I am driving quite good but around 1.3 seconds off the pace on sub 10 second lap layouts.

I have the LRP X12 17.5 motor I bought 5 years ago when I was gonna return to R/C then. Running Hobbywing Justock ESC. I have the SXX TC Spec ESC but forgot to order the upgrade board for blinky so grabbed the Justock quick for the season.

Week 1 ran my Reedy 5000 battery from 5 years ago with a little higher IR and my best was a 10.4 and others were 9.3 range. Made the A Main but 4 laps disparity from TQ to me.

Week 2 where I thought the layout was more time to get around the track, but no way it was. I was able to get a 10.1 once or twice, but the faster top guys running 9.1, 9.0, 8.9 range. I put in the Orca 7500 that I bought here used and it has about half the IR and the car had more punch. The car did not handle as well even though I put in the stiffer springs I needed on the TRF419 over week 1 from the kit softies. Now I am 6 laps slower in my B Main run to the winner of the A Main.

So is this X12 really behind? I think 25.5 VTA cars are just as fast or capable of passing me it seems. I have not played with motor side timing or much on the gearing.

So I likely will pick up a motor in the near future. Please make a suggestion.

I wonder about the Revtech 24K/KO motors, they look new.
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Old 11-15-2015, 04:46 AM
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Don't know if the X12 is truly that much behind, but let's put it this way: its successor, the X20 series has been out for quite a while now.

Have you checked gearing, gear mesh, motor timing, ESC calibration, transmitter settings (EPA or D/R), checked the car for binding in the transmission, etc.?

The motor could be perfectly fine, if one of those things isn't ok - and a new motor would have the same problems.

But again, the X12 is getting a little... dated.
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Old 11-15-2015, 05:00 AM
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The x12 is most likely off the pace. It's an older motor and was never really known to be the fastest 17.5 out there.

Take your pick of any of the newer motors that are out, gear it about 4.0 fdr and have fun. Motiv, R1, D4 1s, etc should all be good motors.
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Old 11-15-2015, 01:11 PM
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The motiv 17.5 is a beast and is very reasonably priced. I have 2 and have been very happy! I also like supporting local racers, and Paul Lemieux (the one hand building the motors himself!) is from Milwaukee.
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Old 11-16-2015, 08:21 PM
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Well my FDR is 5.65 right now. I guess I need a smaller 64P spur! I am running the stock 116T and I got my biggest pinion a 38T on there.

Anyways for the motors looking at the following thanks to comments or messages. I think an OEM that puts the time into setting up the motor and/or sorting to higher ranked parts and matched up and tested is what I might as well go for that may be a few extra bucks:


Express Motorsports 24K Gold Rush
Fantom Racing FR-1 Works Edition
Motiv M Code
Schuur Speed Signature Select V3 Series
Team Scream The 1


Vote for these some more or suggest something else if you want!
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Old 11-16-2015, 08:54 PM
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What size track are you running on?

If this is a smaller indoor track change your fdr to 4.0 to start and if it's a large outdoor track go to 3.3 fdr to start. This alone will help a bunch.

Then go buy the M Code and you'll have plenty of power.
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Old 11-16-2015, 09:46 PM
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Most people on a average indoor carpet tracks run 3.8ish FDR for 17.5.

All these motors listed are good but also consider the Team Powers Actinium. Very good motor, won Halloween Classic at the gate and qualified second behind Paul Lemieux at Stock Wars.

Time between 3rd and 4th tick marks to the far right, start gearing at 3.9, if running below 160 deg after 5 minutes, gear up a bit. If to hot, time down half a tick mark and leave gearing alone. Keep timing down a little until motor runs in that 160 deg range after a 5 min race. Make sure your running a fan on the motor.

A lot of heat generated in a motor can come from driving. If your more of a beginner the motor will run hot due to not driving he groove line. If your experienced and drive the track line well it will run cooler.
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Old 11-17-2015, 05:47 AM
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go to like a 92-96 (at largest) and go for a 3.8-4.1 FDR. you can try that with your current motor, but i'd look for a replacement
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Old 11-17-2015, 07:56 AM
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Originally Posted by 190mph View Post

So is this X12 really behind? I think 25.5 VTA cars are just as fast or capable of passing me it seems. I have not played with motor side timing or much on the gearing.

So I likely will pick up a motor in the near future. Please make a suggestion.
If you're near 1s lap off the pace, motor is not the issue
For sure, timing & gearing can help to shave a few tenths off that
An X12 in good condition with a fan, is not that far off the pace, maybe a few tenths at most
The rest is driving & setup

Suggest start that motor at minimum timing, max gear to start, fine tune timing from there
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Old 11-17-2015, 10:39 AM
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Originally Posted by 190mph View Post
Well my FDR is 5.65 right now. I guess I need a smaller 64P spur! I am running the stock 116T and I got my biggest pinion a 38T on there.

Anyways for the motors looking at the following thanks to comments or messages. I think an OEM that puts the time into setting up the motor and/or sorting to higher ranked parts and matched up and tested is what I might as well go for that may be a few extra bucks:


Express Motorsports 24K Gold Rush
Fantom Racing FR-1 Works Edition
Motiv M Code
Schuur Speed Signature Select V3 Series
Team Scream The 1


Vote for these some more or suggest something else if you want!
With an FDR of 5.65, you will most certainly be behind the leaders in lap times. As others have said, go down to a 4.0-4.20 and temp the motor after a 5 min race to see where you are at. Adjust the FDR down or up according to temps.

Also, consider the newly released Trackstar V2 motor. It's dirt cheap and I have no problems keeping up with (and passing) cars running "Certified" motors.
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Old 11-17-2015, 11:05 AM
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5.65 fdr is for blinky 10.5t motors.... 3.75fdr is for 17.5t blinky....
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Old 11-17-2015, 05:18 PM
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Okay ordered a 96T spur and 6 pack of 41 to 46T Yeah Racing pinions.

Found a 102T spur from the TRF415 cars laying around to use in case the order does not show up by Satruday and I can borrow a large pinion from one of the guys.

See how the X12 goes for a bit.
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