Okay, but that might take a while.

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

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

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.

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

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.

what truck is it in?

Here:

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

What's the gear ratio of his truck?

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

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

i'm not sure on that one.

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

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