Originally Posted by rcfoolz

This was part of my "diet program" :use all titanium screws. Lightweight pully adapters, titanium 2speed and center shaft, lighter servo's, delrin upright screws instead of the aluminum ones. Lightweight motor mounts, vented disk brake, titanium hinge pins. Also, there was some other things you could do, cross drill the one-way, remove the handle, use a 9 fin cooling head instead of an 11 on some engines, ect, ect. If you do all this, you should be under-weight.
Using the correct servo for throttle can save you 10-15 grams.
Full titanium screws saved me 16gr.
Lightweight pully adapters........7g
Delrin upright screws...............3g
2 speed shaft.........................8g
center shaft...........................6g
vented disc brake....................1g, but gave better braking
Titanium hinge pins..................6g
lightweight motor mounts..........2g
titanium motor mount screws.....2g

I shaved 62grams off the car using this stuff.
Also, the body you use saves weight.
Stratus 3.1 108g
Caddy VTS 110g
Mazda 6 112g
Alpha 112g

Tire diameter is something to look at too. a new set is 90g and a set trued to average 59mm is 80g.....(fast tires)