Pro-Match "Black Magic" stock motor

[chizzler]

Does anyone here have one of these?
i just got one and i was wondering if any motor gurus know of how to get better performance out of it from those of you who have run it.... ie, spring, brushes and any other tips :)
it seems a little stiff out of the package, just wondering how to give it a good break in.

[Grizzbob]

No idea, chizzler, what does it look like? I mean, what color is the metal of the can, the endbell, & does it say EPIC or Yokomo on the endbell? After learning some of those things, then I can probably give you an idea of what to expect from a motor..... :)

[Grizzbob]

Ok, those can be pretty versatile, I've seen some that have good rpm & behave a lot like the older Rage-based motors, & others that have lots of torque & power like a P2K. The best thing you could do is to get with someone who has a dyno to have a look at how yours will behave. Failing that, you should get some idea how it'll run in practice, I'd gear it like an older Yok or GM3 to start & see how the car feels with it(as well as the motor itself). If it feels like it needs more top end, then I'd gear it more like you would a P2K(though maybe one tooth less on the pinion) & try again. Unfortunately, as much as I like the MVP design, it is difficult to predict how it'll run until you do run it(I have 3 of them myself, & the dyno really helps me get a handle on how to use each one)..... :)

[Grizzbob]

Oh, & for setting them up, I like to use either Reedy 767 brushes with a medium spring(actually, Reedy's copper colored spring seems to work very nicely), or if you can get some, try Niftech's Deep Serrated brush(it seems a bit better for power, & it also can do more runs between rebuilds, though it takes a long time for it to seat properly). For break-in, it's the usual, I do brush break-in with comm drops & a 4 cell pack for about a minute, & Trinity's bushing buster works well for the bushings(just follow their instructions to do it, but keep in mind the tuner may have already done this)..... :)

[chizzler]

grizzbob does it again! :)
yes, it is a yokomo based motor.
it seems to run really well, but the vents in the can are soooo small, its hard to gear higher than 27 tooth pinion on my tc3.

what trinity springs do you recommend? i ask because i have several of those lying around.

ive got the reedy 767's and love them, but they suck at lasting long :(

the turbo 35 can dyno a motor, right?

[cabbynate]

It's a Reedy MVP tuned by Pro-Match. ;)

[Grizzbob]

I'm not certain, but I believe that Trinity's red springs may be real close to the Reedy copper ones(I've tried some red ones, I think they're from Trinity & they work well). As for the heat, yeah, they all seem to get real hot(mine even get uncomfortably warm on a 4 cell pack breaking in brushes & running in my 12L3, though the car's an absolute rocket with it), but they do seem to be able to take it & just keep putting out the power, I don't think my motors have ever slowed during a race. Like I said, it's just important to gear it properly for the way it wants to run. I know that 767's don't last long in it, but they still seem to work the best for power aside from the Niftech brushes, so its just something we have to live with. As for a Turbo 35, it doesn't quite work a a dyno, but you may be able to get some useful info from it. Just apply 5 volts to the motor through it, & listen to the sound of it rev(the higher the note it makes, the faster its going), try to time how fast it reaches top end, & have a look at its amp draw on the Turbo 35. Between those, you may be able to get some idea of how it'll want to run, & how to gear it accordingly..... :)

[HauntedMyst]

chizzler? Are you going to run that one next weekend? If so, I would recommend 64 pitch with a 14t pinion and a 122 spur. That should get you going up ok...

[chizzler]

that sounds a little off HM :)