Want to start a brushless speed demon. - RC-Monster Forums

sharkattack99 · 05:23 PM

i had a project in mind and i seem to be having some trouble getting started, i posted questions about it in the rcuninverse.com and they say to start a post here about it cause rc-monster is all about brushless.

my problem starts with what rc to use, i was thinking 1/10 scale for speed but some were saying that 1/8th would be the way to go, here is the link to the other thread i started http://www.rcuniverse.com/forum/m_9017451/tm.htm im finding it hard to beleive that a 1/8th can make my 100+ goal the motors are made for torque not speed right. i also started to look at the 1/16th scale revo would it be possible with that? so what would be a good choice for starting this speed project? i don't want and onroad rc although i know that i could probably make the goal with one but there also limited to just on road, would like a off road one cause then when im not speed running i can play with it off road as well. any suggestion on how i can read my goal would be helpful, even some links that i could look at. if more info is needed let me know and i will try to get that. money isn't a problem cause i don't mind saving up cause it is just a project not a must have now, lol. so don't worry about price or buget

thanks

shark

nitrostarter · 08.19.2009, 05:35 PM

Ofna GTP with a MMM2200 combo and some large 2-speed gears from RC-M.

riverat1540 · 08.19.2009, 06:20 PM

Id think this over though as its very possible to go this fast, but parts will wear much faster and components are not going to last as long and if uve never drivin something this fast ur gonna crash it, id suggest something more reasonable like 65 with a efficient setup and also think the gtp 2 with a mamba setup is good on 5-6s.

Unsullied_Spy · 08.19.2009, 06:32 PM

GTP 2 converted to single speed (2 speeds and electrics = no good). I think the conversion gives you a center diff, lock that sucker up tight so you don't unload all of your power. After that a 2200KV MMM combo on 5-6s with proper gearing should push you to 80 without a hitch. Gear up some more and 100+ is possible but I think you should start off making runs around 60 MPH and work your way up from there so you can get a hang for the handling and get your car totally dialed in.

Electrics motors are definitely torque monsters, but that's not what they're all about. Basically your speed comes down to the overall reduction ratio and how many RPMs you're turning. Brushless motors have the torque to pull MUCH taller ratios than a nitro and can turn twice as many RPMs without a problem, so you're on the right track already just by ditching nitro for BL.

snellemin · 06:45 PM

If you want all out speed, then build yourself a 1/10 dragster. 100MPH in 132ft.

The crt.5 is hella fun and can go stupid fast with foam tires. When you are done filling your need for speed, put on the offroad tires and have some more fun.

1/8 can go 100mph, but it just cost more. But like SPY said, learn to handle a car at 60mph and go from there.

sharkattack99 · 08.19.2009, 07:02 PM

so what kit would be the best kit, (please be specific as im still not familiar with all the names of different kits) would be the best kit to start with 60 and work my way up to 100+ with out have to buy a new kit every time i want to go faster? prefer off road cause like snellemin said when i done with my need for speed i can slap on some off road tires and have some off road fun. what motor would be good to start with?

still working with my savage x brushless but i think im going to keep that a basher.

jayjay283 · 07:13 PM

Check out the net about speed Start here, one of our fellow posters
http://fastestrc.blogspot.com/2008/1...ph-by-nic.html

jze has/had the worlds fastest monster truck at 80+ some MPH and a guy here claims 90+ some with a revo. To break 100 with a 4wd you would be king, and need to be very rich. Think about your goal, money and have you gone 75mph ? I flipped my truck and hit myself with it and nearly broke my leg lol

im just asking whats your budget for this project ?

sharkattack99 · 08.19.2009, 08:35 PM

well considering that i don't mind saving up funds for this project, my funds pretty much limitless theres nothing that i can't save for, i don't have to have everything right away, but $600 to $900 for a kit would be a good place to start.

Rivermaxx · 08.19.2009, 08:50 PM

I am building a lightened g-maxx for this same purpose to enter it in a ISC event coming to my town. My goal is 100mph if a revo can do 91.2 a lighter , lower cog g-maxx cam probably do a 100mph. My biggest problem is tires and gear ratio.

sharkattack99 · 09:02 PM

sounds like fun, yeah the problem im having is i don't know were to start, lol. alot of people that i asked on another forum said a buggy would be my best bet, let alone the motor and esc. might try some proline street tires heard they were good.

well hope you acheive your goal man good luck.

brushlessboy16 · 08.19.2009, 09:02 PM

Quote:

Originally Posted by Rivermaxx

I am building a lightened g-maxx for this same purpose to enter it in a ISC event coming to my town. My goal is 100mph if a revo can do 91.2 a lighter , lower cog g-maxx cam probably do a 100mph. My biggest problem is tires and gear ratio.

taped HPI phatlines.

as for gearing, you might want to consider talking to mike- he might send you an rc-monster banner and some pinions :)

As for Shark.. your best bet is to find an 8th scale buggy... relatively durable (nothing is durable at over 50) and just work your way up from there

get a baseline setup for 60-70ish then work from there.

and make sure your tires are balanced or they will rattle the car to shreds.

TexasSP · 08.19.2009, 09:03 PM

1/10th scalers break too easily in my opinion to be a speed machine. I also would shy away from a revo as it's just not practical.

I am with the ofna GTP and MMM/2650 combo for all out speed. But as others have said, start with a reasonable goal like 65-70. I can tell you, just 60 mph is hairy with a little RC car.

jayjay283 · 08.19.2009, 09:17 PM

In your original posts on RCU you stated you wanted to run 100mph on a somewhat gravel-ey road thats why you wanted a 4x4 truck. Most guys have trouble breaking 60 on a messed up road, and ALL speed records are on roads liking to a drag strip or an actual drag strip. Only way to do 100 with a truck IMO on a messed up road is a 1/6th FG with about 4 grand into it. If you can't drive your 1:1 car down it at 100 how can an RC. Fastest ive gone is 75ish with a losi speed T on 3s 4800kv geared so long my friends took it till I couldnt see it then said floor it over a radio and when it got near me it caught air and came flying at me like a pissed bumble bee. I can tell you when its going to rain now from my ankle thanks to that truck, I will never fix it. Nearly killed me lol... I agree GTP long gearing, but you wont be driving it on that messed up road. It will be flat pavement or nothing

sharkattack99 · 11:02 PM

well i wanted it to be 4wd drive cause i figured better control and partly the road and im a 4x4 nut lol, the road was made with glue and gravel there is no loose graval now its a pretty decent but nothin like a highway or freeway. so a decent 8th buggy and highest kv i can find? so basically it will be the bearing i use will be what gets me to my speed then?

dude sorry hear about ur ankle, i got in the way of my savage when it was still nitro cause it shifted ofv a hill scraped the hell out of my leg.

brushlessboy16 · 08.19.2009, 11:12 PM

Quote:

Originally Posted by sharkattack99

well i wanted it to be 4wd drive cause i figured better control and partly the road and im a 4x4 nut lol, the road was made with glue and gravel there is no loose graval now its a pretty decent but nothin like a highway or freeway. so a decent 8th buggy and highest kv i can find? so basically it will be the bearing i use will be what gets me to my speed then?

high kv equals bad

Low kv and more voltage.

and you should really look for a smoother test location. blacktop is best.