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Old 01-24-2017, 11:57 AM   #16
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http://roarracing.org/4rmb/forumdisplay.php?23-Motor-Approvals
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Old 01-24-2017, 12:10 PM   #17
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Originally Posted by TOM MAR View Post
http://roarracing.org/4rmb/forumdisplay.php?23-Motor-Approvals
That doesn't seem to be a public forum.
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Old 01-24-2017, 01:03 PM   #18
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http://www.roarracing.com/approved_brushless_motors.php

Just type 25.5 in the search box
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Old 01-24-2017, 01:20 PM   #19
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Try this...


http://roarracing.org/4rmb/showthrea...T-W-11-12-2016

I think these should work, they worked for me & I am not a current member.

Tom
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Old 01-24-2017, 01:25 PM   #20
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http://roarracing.org/4rmb/forumdisp...ec-25-5-Motors
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Old 01-24-2017, 02:06 PM   #21
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Fantom is list on ROAR with 17.5 motor list
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Old 01-24-2017, 02:27 PM   #22
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There's not much that can be done with the new 25.5 motor specs. It defines minimum IR, stator length, type of wind...everything. They will all be very similar in performance. Only thing you can hope for is to buy an old Novak and hope you get one that is outside the parameters of the new stated spec as those motors weren't monitored but are grandfathered. The only thing motor manufacturers can do at this point is try to push the envelope and make motors right at the 101 milliohm cutoff. Dangerous to do as a production run causes variations that can make a motor illegal right off the production floor if they build it too close.
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Old 01-24-2017, 04:06 PM   #23
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Originally Posted by Carnage9270 View Post
There's not much that can be done with the new 25.5 motor specs. It defines minimum IR, stator length, type of wind...everything. They will all be very similar in performance. Only thing you can hope for is to buy an old Novak and hope you get one that is outside the parameters of the new stated spec as those motors weren't monitored but are grandfathered. The only thing motor manufacturers can do at this point is try to push the envelope and make motors right at the 101 milliohm cutoff. Dangerous to do as a production run causes variations that can make a motor illegal right off the production floor if they build it too close.
All this is true . But the one veritable companies can do is improve on rotor strength .. the Novak rotors are old technology 1200-1300ish rotors (12.3mm)
Newer motor are using new processed to get motors in the 1750 range motiv (12.5mm)
Only other rotors that come close is the TSR @ 1650ish (12.5mm)
So given this info I would be looking at TSR/motiv for their new style motors bacause there new can design is much lighter and rotor strength is much higher than other brands at the moment ... That's why those 2 companies would be my first choice
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Old 01-24-2017, 05:41 PM   #24
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Am I missing something because I don't see the D4 on the list.
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Old 01-24-2017, 05:48 PM   #25
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Quote:
Originally Posted by jlfx car audio View Post
All this is true . But the one veritable companies can do is improve on rotor strength .. the Novak rotors are old technology 1200-1300ish rotors (12.3mm)
Newer motor are using new processed to get motors in the 1750 range motiv (12.5mm)
Only other rotors that come close is the TSR @ 1650ish (12.5mm)
So given this info I would be looking at TSR/motiv for their new style motors bacause there new can design is much lighter and rotor strength is much higher than other brands at the moment ... That's why those 2 companies would be my first choice
Rotor strength gives more torque but loses out on RPM. It's not always faster.
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Old 01-24-2017, 05:51 PM   #26
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Rotor strength gives more torque but loses out on RPM. It's not always faster.
isn't that what gear choices are for.
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Old 01-24-2017, 06:24 PM   #27
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Quote:
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Am I missing something because I don't see the D4 on the list.
Probably not submitted, like the D3.5.
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Old 01-24-2017, 06:26 PM   #28
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only the 24k is legal

http://roarracing.org/4rmb/showthrea...804-05-13-2016
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Last edited by DARKSIDE; 01-24-2017 at 06:38 PM.
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Old 01-24-2017, 06:29 PM   #29
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Originally Posted by gigaplex View Post
Rotor strength gives more torque but loses out on RPM. It's not always faster.
Higher #s on rotors have always giving me more efficient motors that run cooler and more consistent
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Old 01-24-2017, 06:35 PM   #30
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D4 is not on the list.

Motiv
Maclan
Trinity 24K
Hobbywing
Fantom
Team Scream
Tekin Gen 3

All must have 12.3 rotor. List gives the part numbers for approved motors. I am undecided right now between the Fantom, Motiv or the Maclan. I have seen a couple reliability issues with TSR motors. Maclan is probably a bit slower but runs super cool and is also the cheapest. VERY happy with my Maclan 17.5.


http://www.roarracing.com/approvals/...lessmotors.php
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