Originally Posted by burnineyes
With todays extreme brushless and lipo power, 4wd is the best way to get power down for insane speeds. Any of the popular touring cars that you can get heavy duty parts for would be the best option. A pan car would be cheap and easy to set up, but will really struggle to put all that power down. The most popular models for speed runs are the TC3/TC4. There are so many option parts available that it is easy to build one of these nearly bulletproof and able to withstand 2-4HP.
I built a TC3 with nothing but steel diffs, and upgraded driveshafts, Mamba Max Pro, Medusa 3300Kv, 5s Lipo, and most importantly, good tires. I only saw 89 on radar, but I know I had several passes not checked that seemed much faster.
Nic Case is the world record holder. I believe his current record is with a Schumacher MI4 that he custom built many parts for. Now he is working on a shaft drive car for a new record shot. http://www.rc-isc.com/forums/showthread.php?t=459
Nic Case's new car seems to be from Associated.
A TC4/3 Carbon fiber Chassi, stretched to a dragster.
The regular things apply again. U need insanely fast motors with crazy torque.
B40 or C40 By Hackers, Lehners and Platinburgs are some of the motors that are used in dragsters. But they go by Scale quater mile and Fast accelaration rather top speed. they can reach 70-80mph in a short distance. rather than reaching top speed on a loooong runway.
So motor wise try looking into Heli motors by the above listed manufacturers. Or something that has alot of Top end and has the powerband sitting at the top end rather the low/mid end. So there are alot different BL powerband motors out there some not form the car world but the fly world
Regular TC motors will get you no where for speed runs since most of them are mid end power
Next thing would be your body and wheels. Body has to be a high downforce body especially the front. at 45-60 mph mark you car will go airbourne with regular TC bodies that includes most of the Rac TC bodies.There are a few bodies that keep steady and dont make ur car start doing jiggy wiggy stuff at high speeds. Different bodies handle different on diff cars with differnet suspension geometry.
Batteries you need some nice High C rated batteries that can deliver the amperage.
Thats about the basics to go fast. There are alot of minor small things in there. but mainly it will depent on ur Wallet size and physics.