how can i measure top speed

[craig911]

hi guys i want to find out the actual top speed of my nitro truggy ( tomahawk ST )

here is some pics of my car




i have done some mods to get it as fast as possable short of changing gear ratios as i can't find any spur gears to fit ect

i have changed from a thunder tiger .18 pro to a XTM 24.7 i have also fitted 120mm wheels & yes dual fuel tanks for a average of 10-13min run time

I'm looking for a cheap way of measuring top speed
and to find compatible spur / clutch bell combinations

 

[hotrodrob]

Sit in the back of your buddys truck while he is driving down the road and run your truggy behind him

transmited from a mobile communications device

 

[Childresshunt]

by a cheap hotwheels radar gun off ebay
also if u have an android gps speedometer is very accurate only downside is having to attach your phone to thw car but thats how I do it I ziptie a wash cloth around it then attach to car but I've also got a otterbox

 

[craig911]

Thanks guys i dont have any one that drives that can help but i did find a app for my WP7 that should work,

just a few more questions,

my drive cups or whatever there called ( things that hold the dog bones / drive shafts ) keep coming lose,

the little screw that holds them in place keeps coming lose even with lock tight any one have any ideas or should i just keep checking them after every bashing session ?

it only happens to the one that connects on to the centre rear diff & front left wheel

also i want to stock up on spare parts were could i get some spare front ends its only a matter of time before i break something with a front end collision?

( posted in correct place this time )

I'm using ( Vanchem nutlock - VC301 ) it states on the able it seals nuts bots & screws

 

[Childresshunt]

get u some red locktite and let it set overnight but if it keeps comimg loose you'll just have to check it and make aure to keep it tight

---------- Post added at 10:53 PM ---------- Previous post was at 10:52 PM ----------

could also try replacing the cup and see if that changes anything

 

[synnyzter]

Sit in the back of your buddys truck while he is driving down the road and run your truggy behind him

transmited from a mobile communications device

lmao I've done this!