RevTech 17.5 Bad Motor????
#76
It's trig aka college math 112, Sine of theta will give you a workable answer but since your actually measuring from two points on the circumference the sine function is not actually accurate. When I finish calc 2 next term i will give you the right answer or if I come up with it sooner lol. Right now your finding the angle from the origin to cos Theta, which is not on the outer diameter like what your actually trying to find.
As for the recent findings with connections shorting out, I've seen several of the accounts firsthand, and can confirm that the solutions that were employed did resolve each problem. However, I think the manufacturer really needs to tighten their quality control standards, as quite a few of these motors are found to have some fault that leads to a premature failure or a non-working unit right out of the box. End users should not have to repair their motors before the first time they are used, and the installation process shouldn't weaken the internal solder joints enough to cause a potential failure.
#77
Tech Master
iTrader: (1)
Man Rui,
you guys are all over these forums. I did not know anyone locally had posted and/or responded on this thread until after I posted my initial comments. Afterward I went and read all the posts and realized several of the "Horsham Crew" had already been "up in here"
I have not actually raced the motor after our findings, so to a degree "the acid test" has not occured yet, but at least at this point the thing runs and that's light years ahead of what I had before. I think I will attempt to forward our findings to Trinity in hopes it might help them assist any other racer who might encounter similar difficultiies. Maybe they could instruct anyone who has the same problem to try what we did, it might save sending a motor back and Trinity having to send one out.
you guys are all over these forums. I did not know anyone locally had posted and/or responded on this thread until after I posted my initial comments. Afterward I went and read all the posts and realized several of the "Horsham Crew" had already been "up in here"
I have not actually raced the motor after our findings, so to a degree "the acid test" has not occured yet, but at least at this point the thing runs and that's light years ahead of what I had before. I think I will attempt to forward our findings to Trinity in hopes it might help them assist any other racer who might encounter similar difficultiies. Maybe they could instruct anyone who has the same problem to try what we did, it might save sending a motor back and Trinity having to send one out.
#78
#83
Jim Dieter suggests if the tabs are loose to try to bend them over the board slightly with a pair of pliers. If they are too loose and you have a crash they could short and cause problems.
If you cant bend them, maybe a dab of glue after you solder it up just to keep it from the chance of shorting.
If you cant bend them, maybe a dab of glue after you solder it up just to keep it from the chance of shorting.
#84
Tech Addict
iTrader: (8)
Jim Dieter suggests if the tabs are loose to try to bend them over the board slightly with a pair of pliers. If they are too loose and you have a crash they could short and cause problems.
If you cant bend them, maybe a dab of glue after you solder it up just to keep it from the chance of shorting.
If you cant bend them, maybe a dab of glue after you solder it up just to keep it from the chance of shorting.
#85
Some times even the weight of the speed controls wires are enough to move the terminals on impact. I either read it or Dieter told me to do the tab deal, so I'd think thats pretty gospel. The tough part is finding the right pliers to make it happen as those tabs are pretty thick.
#87
Yes, for sure, I should have specified not to use a CA, perhaps a epoxy would be much better, no fumes then.
#88
I picked up a 17.5 revtech for my Touring Car, where should I be starting with the gearing and timing?
Class is 17.5 blinky, Rubber tires on Medium bite carpet. I'm running 64p gears with a 96 spur.
Class is 17.5 blinky, Rubber tires on Medium bite carpet. I'm running 64p gears with a 96 spur.
#90
Tech Master
iTrader: (1)
4.0 FDR is a reasonable starting point for a medium sized track. Lower for larger tracks.
Can timing...Crank it up, but check temps often, use a fan and make sure your drivetrain is as free as it can be.