out of these, what would be the best direct drive revo setup motor?

Originally Posted by lincpimp

Sike means that the stock diffs are too high ratio. He is using truggy diffs in the rcm cases. He has 4.3:1 gearing as opposed to the stock 2.8:1 ratio. THe high stock gearing causes startup issues due to the high load.

That too

Lots of new stuff going on here.. Direct drive, clutch set ups ETC

[lincpimp]

Yeah good times, I love to see the forum all lit up with inovation! Pity that I can't do all of the conversions that i have lined up, money is not the issue, just time. Hopefully it will slow down slightly after the holidays. My wife gave me two months off from working on the house. Time to live in the rc workshop!

[sikeston34m]

Originally Posted by lincpimp

Sike means that the stock diffs are too high ratio. He is using truggy diffs in the rcm cases. He has 4.3:1 gearing as opposed to the stock 2.8:1 ratio. THe high stock gearing causes startup issues due to the high load.

Linc is correct.

Thanks for your kind words Linc. I'm working on a custom Wye wound 4130 right now. Still need to nail down something ideal in using on the termination point.

I'm also waiting for my Ceramic Nitride Bearings to come in.

Mugen has a Truggy Ratio for 1/8th diffs that I want. 4.6:1 ratio! I think it would be even better. I need to catch up financially before I can throw much more at the Revo though.

In a few weeks, my next Lipo order will be here. I will be selling some good 5000mah 20C packs fresh from the manufacturer. Included are some 20C 5000mah 3S packs. I'm gonna put the Revo on 6S for good if the bearings will bullet proof the diffs.

So I'm pretty drained right now. A Quantity Lipo Order will do that to ya. LOL

[aqwut]

Originally Posted by sikeston34m

So I'm pretty drained right now. A Quantity Lipo Order will do that to ya. LOL

That's for sure.. How many Lipos are you ordering?...

What centers are you using?

[aqwut]

High voltage outrunners would be awesome... but what about all the dirt and debris from the summer bashings?...
Big difference from when you're running 10, 15, 20, 25, 30C lipos.... but for higher voltage applications it's not as important I think.... but the guys with the air planes needs high weight:power ratio.... Just a thought...

[sikeston34m]

Originally Posted by aqwut

High voltage outrunners would be awesome... but what about all the dirt and debris from the summer bashings?...
Big difference from when you're running 10, 15, 20, 25, 30C lipos.... but for higher voltage applications it's not as important I think.... but the guys with the air planes needs high weight:power ratio.... Just a thought...

Actually from what I gather, the fly boys pretty much know how many amps they're gonna be pulling. They don't pull the start up amperage that we do either. Their discharge rate tends to be pretty flat.

They size the motor for the RTR weight and then prop according to the amps the motor can do continously without over heating. From what I understand alot of the fly boys are running 10C and 15C cells.

The higher the "C" rating, the more the pack weighs for a given capacity. Of course us Monster Truck guys are going with the packs that will deliver the amps we need.

For example, a 10C 8000mah 7.4v pack weighs 12 ounces
a 15C 8000mah 7.4v pack weighs 14.5 ounces

I know it's not much, but I believe it's because there is more anode and cathode material to yield the higher discharge rate.

[aqwut]

2.5oz heavier.. but 50% more power... :) .. that's a lot of juice... anyways.. it's nice to have the higher C batteries, just because it will put less stress on the batteries when we're drawing those crazy amps...