new brushless for stadium truck??

[Bmr4life]

Originally Posted by cart213

Over 50 mph is impressive on 2s, if that's how fast you're actually going. Like metalman said, though, 3s will be a stretch to hit 75 mph like you want to. The faster you go, the harder it is to go even faster. I think you'll need 4s (at least) to reach over 75.

I agree. Hitting 50mph on 2s provides a 100% gaurantee to not hit 75mph on 3s. Increasing voltage by 50% would only increase speed by 50% in an ideal world.

[squeeforever]

Yup, wind resistance, more weight, ect. are all factors that would have to be figured in.

[sleepy23]

Originally Posted by Bmr4life

hey OP, have you GPS'd your ride to verify the 50mph top speed on just 7.4v? If so, how much runway does it require? thanks

i assume you mean me sinc e i dont see anyone with that screen name.
i have gps'd mine with a garmin etrax (the yellow one) and reached 50mph with the 2s (7.4v) and did it in less than 200 feet. i dont know the exact distance, but one day i am gona chalk off the road and see, or i might wait until the parking lot is paved for the new walmart below my house and go down there and run.

[Bmr4life]

Originally Posted by sleepy23

i assume you mean me sinc e i dont see anyone with that screen name.
i have gps'd mine with a garmin etrax (the yellow one) and reached 50mph with the 2s (7.4v) and did it in less than 200 feet. i dont know the exact distance, but one day i am gona chalk off the road and see, or i might wait until the parking lot is paved for the new walmart below my house and go down there and run.

yeah, OP = Original Poster. Thats cool that you hit 50mph on only 7.4v. I've been runing 8.4v (7 GP3300) on an 8s motor and could only hit 41mph (same GPS unit you have) but I'm seroiusly limited by area and radio interference. I've got about 100ft of straight road in my apartment complex but my radio range is only 50-60ft. I need to stop being lazy and switch the cheap traxxas tx and rx out and install a JR setup I have stored somewhere.

[SpEEdyBL]

Actually, 65 mph is possible w/ 3s lipo. Here are some 60+ mph rustlers:

http://www.swami-rc.com/speedrecord.htm

As you can see one, of the rustlers did 66.6 mph only on 10 cells with the lehner basic 5300.

[sleepy23]

well quite honestly, i should be able to easily throw down 60mph when compared to a rustler. my truck is highly modified and just for street racing. its still a work in progress, but i refuse to believe that i couldnt smoke any rustler out there, of course i would prolly have to upgrade motor/esc to match, but there are very few trucks out there that are as mechanically moddified as mine.
so i will let the gps speak for me.
again, any word on the mamba max?

[cart213]

Originally Posted by SpEEdyBL

Actually, 65 mph is possible w/ 3s lipo. Here are some 60+ mph rustlers:

http://www.swami-rc.com/speedrecord.htm

As you can see one, of the rustlers did 66.6 mph only on 10 cells with the lehner basic 5300.

True, but I was referring to his original goal of at least 75 mph. ;)

[sleepy23]

i went ahead and ordered the cc7700. i cant wait until it gets here and i can run it.