Veeeery poooooor acceleration. - Page 3 - RC-Monster Forums

captain harlock · 10.16.2006, 08:28 PM

Okay, but that might take a while.

squeeforever · 10.16.2006, 08:33 PM

Why? Plug it in and run it a few feet and see if it works...

captain harlock · 10.16.2006, 09:02 PM

I still need to solder some connectors in it, Squee.

captain harlock · 10.17.2006, 12:04 PM

Well, here's what I have:

I have not tried the 9918, yet, but I tried the truck with the schulze controller one last time with some fixing and so on.
Performance is way better now, but still, there is a slight cogging which Mike told me that it can be done with a smaller pinion.
Also, do you think that a smalller pinion will be better for the motor and controller?
Now that the Slipperentials are around the corner, I believe using a smaller pinion is much better, right?
When Promod made his 50mph speed run with the Lehner XL1600 motor, he actually used a 12T pinion with a center diff which has a 51 spur.
Well, the 1950/10 is surely much stronger, but the controller wont be able to handle a large, heavy, steel 24T pinion.
My pinion is two times as big as Promod's. If he used my pinion with XL1600, I'm sure that motor would not have lasted for long enough.
I think I should go for 18-20T pinion to be in the safe zone.

tallyram · 10.17.2006, 03:09 PM

Quote:

I think I should go for 18-20T pinion to be in the safe zone.

that should be ok. i run a 1950/8 and 6s lipo, with 18/51 gearing i get around 50mph. i use a g2r.

captain harlock · 10.17.2006, 03:15 PM

Your truck seems light. The motor you're using is quite fast, too.
How fast will my truck go, you think? with a 1950/10 and 51/20.

tallyram · 10.17.2006, 03:35 PM

what truck is it in?

captain harlock · 10.17.2006, 04:01 PM

Here:

squeeforever · 10.17.2006, 05:07 PM

Remember, Tallyrams truck has stock ratio diffs, were as yours as 3.31:1 diffs...

captain harlock · 10.17.2006, 05:30 PM

What's the gear ratio of his truck?

tallyram · 10.17.2006, 06:45 PM

stock maxx and revo diff ratio is 2.85/1! hope this helps.

captain harlock · 10.17.2006, 08:02 PM

No wonder you're fast.
A center diff or a slipperential will add more speed, right?
Or is it just about handling?

tallyram · 10.17.2006, 08:24 PM

i'm not sure on that one.

squeeforever · 10.17.2006, 09:47 PM

No....It won't add speed....Just handling...You have to compensate for gearing when you change diffs or whatnot...

Promod · 10.18.2006, 12:29 PM

A center diff will give speed maybe not directly. There is less drivetrain drag with a center diff but not sure how much this helps in speed.
The center diff will give you the ablity to run a very high gear ratio. Much higher than you can get with a trans. Which equals higher speed in low rpm set ups. The best gain with the center diff is it will keep the front wheels on the ground(mostly:027: ).
That 1950/10 on 6s is what I would call a low RPM set up and will need a tall gear to get speed. Just keep adding gear to it and watch your temps. If it cogs your pulling the trigger to slow:) .

Thank you,
Promod