DirkW

iTrader: (1)

I think a ROAR ban might just hurt them slightly more...

old_dude

iTrader: (1)

Yes.
At our HWC one of these motors was caught in pre race tech. The first indication was a low stator resistance and higher Kv. This was reported to ROAR and that started the investigation. It is probable that it is what is known as a mis-production as the stack is as stated short but it matches the stack used on their other approved and legal motors. The 25.5 by rule is a longer stack.
Our track has one of the best and most through motor techs around with all of the correct equipment. We can even check ESC's for timing if suspected.

Sabin

iTrader: (1)

Oh god, that's a fate worse than death.

DesertRat

iTrader: (2)

THE FASTEST TORTOISE IS STILL A TORTOISE!!!

Cromulent

iTrader: (8)

Pic lifted from a Facebook group so people understand what component is affected and how to measure theirs.

My local track is just going to measure them. If legal length (>19.7mm), you’re good to go. If short, replace or have it fixed before you race.

MonkeyCmonkeyDo

iTrader: (4)

Look at the tolerance on your calipers. Probably not even with in .1 Measure with micrometers.
...this is what i was tryin to say ppl. We have manufacturing tolerances for a reason. You can zero out your calipers and measure all day. Your tools have tolerances as well
d

MonkeyCmonkeyDo

iTrader: (4)

Edit. Googles telling me they're extremely accurate. I stand corrected. Quality of the tool matters though too. My calipers at home are cheap compared to work ones.

busman

iTrader: (2)

AND! This is coming from running a Daytona Superbird in VTA, When that car NEVER, EVER! Ran in TransAm

OVA

iTrader: (86)

ouch

racing_jason

For those of you who aren't on Facebook, Rick has posted the best solutions for the problem that he has available at this time. I attached a screen shot for you guys to see what Rick is offering to anyone with an SP5. It does sound like its a manufacturing issue and should only be effecting the 25.5 SP5 motors so all the 21.5, 17.5, 13.5 motors in the SP5 line should be good to go. Hope this helps someone.

https://www.associatedelectrics.com/contact/ Click the reedy product support at the above link and email them there.

OffRoadJunkie

iTrader: (9)

I hope it doesn't affect the 17.5. I just purchased one two weeks ago.

Cromulent

iTrader: (8)

If teching for a big race, I’d agree, but no one is bringing a calibrated caliper (or mic) to a race. Also watch out for a lack of brown out protection on crappy digital calipers (pretty much any other than Starrett or Mitutoyo) that causes readings to drift as battery voltage sags.

This can be a spot check to see if your motor MIGHT be affected. Looks like laminations are ~0.35mm thick, so a caliper would have to be pretty far off to not pick up a missing layer.

Metalsoft

iTrader: (76)

It might raise the price 7-10 bucks per motor and yes you can assure better quality. Stereotypes are created for a reason, Chinese made items are @@@. Period.

DirkW

iTrader: (1)

Some people might call that statement racist, when phrased in such a general way. But Chinese companies are well known to cut corners wherever they can if you don't have top quality control/assurance in place. It's actually an absolute must for production in China, and really not exactly something new or secret. Companies who don't, play with fire - and sooner or later will get burned.

TheBeave

iTrader: (6)

A shorter stack means the wire has to travel less distance for each winding. Essentially with the amount of wire it was short the motor was equivalent to a 24.5 motor.