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R/C Tech Forums Thread Wiki: Motiv RC
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NEW FOR 2017 - MC2!

MOTIV M-Code motors, now MC2 for 2017, come pre-set to perform well in most applications. Each MOTIV M-Code motor comes with a specification check list specific to that individual motor. All MOTIV M-Code spec motors come standard with the new "S-HIGH" rotor. If you prefer a different rotor, please send an email via the "Contact Us" page on the Motiv site and reference your order.

Motiv dealers in the U.S. that have received MC2s are:

ProLevel RC
Fordham Hobbies
Lefthander RC
TQ RC Racing
Activ RC
Gripworks RC
Stormer Hobbies
AMain Hobbies
NorCal Hobbies

& More - Check your local hobby shop!

“Defy” Series Pro Li-Po battery weights

“Shorty” 2 Cell, 7.4v, 5000mah, 65c+ - 215 grams
“Thin Shorty” 2 Cell, 7.4v, 3900mah, 65c+ - 159 grams
2 Cell, 7.4v, 5000mah, 60c+ - 258 grams
2 Cell, 7.4v, 6000mah, 90c+ - 311 grams

Following are some suggested starting points for the MC2 line of motors for each class (we will update/add to this as often as possible). One key piece to pay attention to when adjusting your motor is Amp Draw. Try to keep spec motors around 3.0.

25.5 F1
FDR: 2.9-3.2
Timing: 42-45* measured on Motolyser
Rotor: 12.3mm standard
Fan: Yes

25.5 USVTA
FDR: 3.6-3.9
Timing: 44-46* measured on Motolyser
Rotor: 12.3mm standard
Fan: Yes

21.5 USGT
FDR: 3.9-4.1
Timing: 46-48* measured on Motolyser
Rotor: S-HIGH
Fan: Yes

17.5 TC (Indoor/Small-Std. size Tracks)
FDR: 4.1-4.4
Timing: 46-48* measured on Motolyser
Rotor: S-HIGH
Fan: Yes

17.5 TC (Outdoor/Larger Tracks)
FDR: 3.8-4.0
Timing: 46-48* measured on Motolyser
Rotor: S-HIGH
Fan: Yes

17.5 1/12
Rollout: 83-85mm
Timing: 44-46* measured on Motolyser
Rotor: S-MID
Fan: No

13.5 TC (Indoor/Small-Std. size Tracks)
FDR: 4.7-4.9
Timing: 46-48* measured on Motolyser
Rotor: S-HIGH
Fan: Yes

13.5 TC (Outdoor/Larger Tracks)
FDR: 4.4-4.6
Timing: 46-48* measured on Motolyser
Rotor: S-HIGH
Fan: Yes

13.5 1/12
Rollout: 78-80mm
Timing: 44-46* measured on Motolyser
Rotor: S-MID
Fan: No

WGTR
Rollout: 73mm
Timing: 46
Rotor: S-MID for larger tracks. S-HIGH for smaller tracks, or tracks with black carpet.

17.5 2WD Buggy
FDR: 5.85-6.0
Timing: 45-48*
Rotor: S-HIGH
Fan: Yes

17.5 2WD SC & Stadium Truck
FDR: 7.5-7.8
Timing: 45-47*
Rotor: S-HIGH
Fan: Yes

13.5 4WD Buggy
FDR: 7.0-7.2
Timing: 45-47*
Rotor: S-HIGH
Fan: Yes

Following are starting points for Mod motors in the MC1 line

7.5 2WD Buggy
FDR: 10.2
Timing: @ 28*
Rotor: M-MID
Fan: Optional

5.5 TC
FDR: 7.0-7.2
Timing: @ 30*
Rotor: M-HIGH
Fan: Optional

4.5 TC
FDR: 7.6-7.8
Timing: @ 20*
Rotor: M-HIGH
Fan: Optional

Every MOTIV Motor is hand checked, assembled and packaged by a professional in house at our WI, USA office. During this process every motor component must meet MOTIV requirements before assembly and packaging. Included is a specification check list which is filled out on a motor to motor basis all through the testing and assembly process to ensure the quality of our finished product


How its Made: Motiv RC Brushless Motor assembly w/ Paul Lemieux

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Old 08-02-2016, 10:49 AM   #256
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I just got an S-high rotor for my 21.5. Running on a 120'x88' med-low bite fairly free flowing asphalt track geared at 3.74 fdr @ 49* timing. This sound about right to you guys? I come of the track at about 140*f after a 6 minute run.
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Old 08-02-2016, 02:11 PM   #257
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Originally Posted by JCarr View Post
I just got an S-high rotor for my 21.5. Running on a 120'x88' med-low bite fairly free flowing asphalt track geared at 3.74 fdr @ 49* timing. This sound about right to you guys? I come of the track at about 140*f after a 6 minute run.
Sounds about right. Since the track is large and flowing, you could play with adding a tooth or 2. I would try that and see how laptimes compare over the whole run. Temp should be safe.
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Old 08-25-2016, 10:16 PM   #258
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Anyone know the weight of the Motiv 17.5 motor?
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Old 08-25-2016, 10:27 PM   #259
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Anyone know the weight of the Motiv 17.5 motor?
Approximately 159 grams. I have 17.5 motors with high rotors installed from factory in stock.
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Old 08-26-2016, 06:29 PM   #260
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Going to run WGT-R on a 48' X 100' carpet track. The track is usually technical. Which rotor would you recommend for a 17.5? Going to run 1s battery.
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Old 08-26-2016, 06:36 PM   #261
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Originally Posted by RoyB View Post
Going to run WGT-R on a 48' X 100' carpet track. The track is usually technical. Which rotor would you recommend for a 17.5? Going to run 1s battery.
I know 1/12 prefers mid rotors but I'm not sure about wgt r
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Old 08-27-2016, 08:45 PM   #262
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Going to run WGT-R on a 48' X 100' carpet track. The track is usually technical. Which rotor would you recommend for a 17.5? Going to run 1s battery.
I did a bunch of testing for Paul in March at the Canadian on-road Nats. 50 degrees of timing with 77mm roll out on mid-rotor was a good starting point. I don't think the high rotor would hurt. Depends on the track, if it is technical the high rotor would help but if not the mid would work. This was on a smaller track so if you are running 48 x 100 you will want to gear up. If you are running on black carpet get the high rotor, it works the cars harder than the grey stuff does.
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Old 08-28-2016, 08:29 PM   #263
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Has anyone replaced the bearing in the sensor board? If so, what did you use? I have a couple different motor bearing tools (muchmore and lrp), but wanted to ask before I tried.
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Old 08-29-2016, 01:21 PM   #264
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I have tried both the 17.5T and the 21.5. So far, I have not had luck squeezing more performance out of the motors. I guess I am a little disappointed with their overall performance. I race the 17.5 on a Capricorn LAB TE03Evo on a really big track (Leisure Hours). It's a bit difficult to get a good straight speed on the motor even if I try racing really flowing lines (to prevent speed scrubbing at corners). Please be advised that I am NOT saying it's a bad motor, not at all. I just can't keep with others racer's on the straight. The class is really competitive and the top 6 or 8 guys are always on the same number of laps with really close times between each other (I'm one of those 6 or 8 racers). I have tried the recommended settings on the Wiki page and have gone as far as gearing up to 3.3 but I don't get more speed, only more heat. I changed the motor to a Wurkz R1 V7 motor and the difference was night and day using almost identical gearing ratios and timing. Actually, the R1 worked better with less timing (35 degrees) and a FDR of 3.6.

I DO NOT want to give up on the Motiv motor yet. Specially since Paul is so supportive on everything related to his brand and it's a great guy (who else buys pizza for everybody on his signature gravity rc race! LOL)

Any suggestions or ideas will be greatly appreciated.

Miguel
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Old 09-05-2016, 08:25 AM   #265
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Quote:
Originally Posted by madness View Post
I have tried both the 17.5T and the 21.5. So far, I have not had luck squeezing more performance out of the motors. I guess I am a little disappointed with their overall performance. I race the 17.5 on a Capricorn LAB TE03Evo on a really big track (Leisure Hours). It's a bit difficult to get a good straight speed on the motor even if I try racing really flowing lines (to prevent speed scrubbing at corners). Please be advised that I am NOT saying it's a bad motor, not at all. I just can't keep with others racer's on the straight. The class is really competitive and the top 6 or 8 guys are always on the same number of laps with really close times between each other (I'm one of those 6 or 8 racers). I have tried the recommended settings on the Wiki page and have gone as far as gearing up to 3.3 but I don't get more speed, only more heat. I changed the motor to a Wurkz R1 V7 motor and the difference was night and day using almost identical gearing ratios and timing. Actually, the R1 worked better with less timing (35 degrees) and a FDR of 3.6.

I DO NOT want to give up on the Motiv motor yet. Specially since Paul is so supportive on everything related to his brand and it's a great guy (who else buys pizza for everybody on his signature gravity rc race! LOL)

Any suggestions or ideas will be greatly appreciated.

Miguel
The 17.5 did it have the high tourque rotor? I've had similar experience with the medium rotor. I had 3.2 fdr and 49deg. Timing. On a very long straight. Still got passed.
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Old 09-05-2016, 08:39 AM   #266
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With 3.2fdr to 3.5fdr you have to lower the motor timing down under 36 degrees.... Anymore than 40 degrees timing requires 3.75 fdr to 4.5fdr for most motors or else you'll just get heat, and that's for all 17.5t motors, not just the motiv....
Just as an example, a fellow racer tested a novak Vulcan(12.5mm rotor) at 45degrees at critters(small track), and ended up with 4.43fdr, while I ran my Novak(12.5mm rotor) at N timing(30degrees) at the same track with 3.4375fdr with room to gear higher... The same motor can be timed to be either a torque monster or a rpm monster, but the gearing will be way different... You'll also need to determine which powerband gives you better laptimes...For some reason, I always prefer the torque powerband, 30degree timing/3.2fdr-3.5fdr : less heat overall...

Last edited by bertrandsv87; 09-05-2016 at 09:53 AM.
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Old 09-05-2016, 08:48 AM   #267
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Originally Posted by bertrandsv87 View Post
With 3.2fdr to 3.5fdr you have to lower the motor timing down under 36 degrees.... Anymore than 40 degrees timing requires 3.75 fdr to 4.5fdr for most motors or else you'll just get heat, and that's for all 17.5t motors, not just the motiv....
Similar experiences with my 21.5 at timezone this weekend.
As far as I can tell this motor excells on carpet with tight tracks. It's extremely smooth and the tolerances are like no other. Not to mention it's one of the lightest motors out there.
That being said I had an r1 in my 17.5 at another asphalt track that was not so big and the motiv was holding its own in the car ahead of me.
I'm sure there is a way to make it work on these bigger tracks. It's just hard to find that sweet spot.
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Old 09-05-2016, 10:53 AM   #268
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Quote:
Originally Posted by bertrandsv87 View Post
With 3.2fdr to 3.5fdr you have to lower the motor timing down under 36 degrees.... Anymore than 40 degrees timing requires 3.75 fdr to 4.5fdr for most motors or else you'll just get heat, and that's for all 17.5t motors, not just the motiv....
Just as an example, a fellow racer tested a novak Vulcan(12.5mm rotor) at 45degrees at critters(small track), and ended up with 4.43fdr, while I ran my Novak(12.5mm rotor) at N timing(30degrees) at the same track with 3.4375fdr with room to gear higher... The same motor can be timed to be either a torque monster or a rpm monster, but the gearing will be way different... You'll also need to determine which powerband gives you better laptimes...For some reason, I always prefer the torque powerband, 30degree timing/3.2fdr-3.5fdr : less heat overall...
I did lower the timing and just whent even slower. Had lots of bottom end no top. Having a 3.2 fdr and the timing 49deg. It was faster. Another person had a high torque rotor had similar set up and had more top end. Also didn't have much time for testing.
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Old 09-05-2016, 09:20 PM   #269
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What is the part number for the high torque rotor for 17.5?
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Old 09-05-2016, 09:39 PM   #270
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What is the part number for the high torque rotor for 17.5?
http://motivrc.com/store/#!/M-CODE-O...egory=13458015
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