7xl preformace

i was woundering what kind of preformance i can expect with the Feigao 540C XL Brushless Motors 7xl in an e-maxx with the warriour 9220

[Procharged5.0]

What batteries will you be using with it? How many cells?

ib4200 12 cells

[Procharged5.0]

The 7XL is rated at 2382kv so with good cells at say 1.2v per cell (per their website) you would get a no-load speed of 34,300 rpm. That compares to a no-load speed of approximately 19,000 for the stock tritons. The torque difference and "punch" will be astounding as will the top speed. Top speed should be around 48-50mph.

Cool hand or Squee can correct me here if my calculations are off at all.

what gearing would i run and do you have the motor

[Procharged5.0]

I'm going to defer that question to "RC-Monster" Mike. He has a way to calculate the preferred gearing. I'd hate to steer you to the wrong pinion. I will tell you that the preferred set-up is to go with the UE/Strobe Slipper which I believe is a 51T spur gear. This slipper handles the power the 7XL will dish out.

[Sylvester]

Id start with 18/51 with a 7xl on 12 cells.

[coolhandcountry]

What diffs are you running?
What kind of tire you running as well?

[neweuser]

I agree with Sylvester. 18/51 would be a good start. If it runs real hot, you can always gear it down. And yes, it depends on the diffs.

i run stock diff and bowtie tires

[Procharged5.0]

I would seriously consider upgrading the diffs! You'll likely blow them to pieces with the new power especially landing off jumps when "on the throttle".

1) Install FLM or Kippster difff cups w/ robinson racing gears and GA diff cases

or

2) Do the UE 6 or 8 spyder diffs. Expensive but bulletproof.

i have some titanium ones shiping to me

[Procharged5.0]

Ti diff cups? Diff housings?

[Procharged5.0]

You do have MIP ur UE CVD's right? Anything else will likely "grenade".

housing and mip cvd