I Want to Build a Go Fast RC !

[TexasSP]

mechanical brakes sound like a must

[Bondonutz]

Originally Posted by PBO

Vertical stabilisers & no wing at the back, big splitter at the front. Good to go

Excellent advice !
Not sure I know what a BIG SPLITTER for the front is ?

Originally Posted by TexasSP

mechanical brakes sound like a must

Yeah, I actually have ben contenplating this. I've ben bouncing back and forth looking at Mikes and Tekno chassis and the option of installing Servo brakes myself.
I'd much rather mod something myself to keep expense down considering this is something I'd only drive once in a while. I already have everything I need to build this except a roller and a motor mount.
Need to find pictures of someone's stock chassis with servo brakes to see if theres even enough room to do this ?
One of my buddys bought a rip off of Mikes Slipperental a few months ago and he hasn't ben able to tune it to his likeing(imagine that?) He's willing to donate it to this build, like to see if this peice of shiz will work. It would be nice to have a slipper for the concrete and 6s ?

[PBO]

Originally Posted by Bondonutz

Excellent advice !
Not sure I know what a BIG SPLITTER for the front is ?

Once you get up over 50mph, you need to control the air around the vehicle as you push through it. A splitter helps you trap some air at the front which creates a high pressure zone - see pic. In simple terms this creates frontal downforce which will eliminate the need for weight forward...an additional benefit is that is adds to the vehicle cord length, which lower the drag coefficient. This is good of course

If you have a look at phildogg's avatar, you'll see the vertical stabilisers and lack of rear downforce, you don't need much rear downforce (if any) because the faster you go, assuming the frontal elements are correct, the more downforce the vehicle as a whole will generate (this is a simplistic summary, thousands of variables influence the aero dynamic). Phil's run his creation well over 100mph...

You'll need to keep the body under control also, use velcro along the sides of the body. If the sides start flapping you'll blow over and/or rip the body off. You can use body mounts also but keep them as short as possible so they don't create drag. An added benefit of velcroing the sides is that you'll usually need to fill the space between body & chassis, this improves low pressure flow under the vehicle...an example by Nic case, he uses polycarb bent to shape



Personally, I'd use the 2650 on 6S...more than enough for 100mph