somewhat bullet proof jato tranny.... - Page 2 - RC-Monster Forums

J57ltr · 09.14.2009, 08:36 PM

1) If I'm trying to do 120 I don't want to run 12S and a really low KV motor. (I know it's less effecient) I'd rather stick with a higher Kv motor in the 3.5K range and more on the 4S-5S range (I use A123's) so that's why I think it would load the motor going into 2nd and allow me to run it up.

2) It's not going to be set for bashing at all just top speed runs. If I had a single speed the amp draw would be way up there when I start if it was locked in 2nd. The amp draw will be less than it would in a single speed and a little easier to get the speed I need without really overgearing it like I would have to do with a single speed.

3) Everything on the Lightning 10 buggy is metal, right now at the power levels I have on my Rustler (up to 1800W peak) the only thing I have trouble with is the stub axles (before I changed to VXL gears in the trans) and they are plastic and metal. Part of the problem is that I use a spool on it. I am not opposed to fixing the transmission it really isn't a big deal. Not to mention it's really lightweight I will be around 6 Lbs, maybe a little lighter.

4) It's a buggy so it sill still have a "center" Diff and I could change fluid to compensate for this couldn't I?

One of the things I don't understand is that if a Nitro engine which has a power curve inversley proportionly to a motor can do it why would a brushless be harder on it. I know the power will actually jump quite a bit with a motor, but I would think the Nitro would be just past it's peak when it shifts and right back into the sweet spot as it shifts. I guess these transmissions have a hard time in the stock application?

I guess you could say I am a hard head but I think I am going to try it anyway. Plus It's a little easier to make a motor plate to adapt a motor to the Jato trans. I would buy the RC monster Stadium 10 mount, but I will eather use the Jato trans or make my own mount.

whitrzac · 09.14.2009, 11:07 PM

you want to do 120 with a jato tranny???

my setup was a novak HV 4.5(5000kv) on a 4s geared 18/56, I would get to 90% throttle and it would start slowing down. blew out the tranny...

even with the alloy gears, I still couldn't keep it together... mabey with a little more time, but its still a PIA

J57ltr · 12:35 AM

What exactly blew out?

You know I totally forgot that I had an additional 3:1 reduction in the Diffs I have to deal with. I guess It may not be such a good idea after all. Even with a 1:1 ratio for the spur and pinion it's still too much.

Jeff

whitrzac · 09.15.2009, 12:18 PM

Quote:

Originally Posted by J57ltr

What exactly blew out?

You know I totally forgot that I had an additional 3:1 reduction in the Diffs I have to deal with. I guess It may not be such a good idea after all. Even with a 1:1 ratio for the spur and pinion it's still too much.

Jeff

the top gear, then the middle gear...