Engine Run Time
#1
Engine Run Time
I am currently running a GRP 21 Tuned On road engine in a MRX-X 1/8 scale. I am only just getting 5min runtime. If I do one extra lap it runs out of fuel. How can I improve my run time ?
Thanks
Thanks
#3
I am using 17/20 50/47 gearing. The pipe is a GRP 3008 FLS system with long header Our rules state 25% Fuel max. I will try a smaller carg restrictor.
#5
#6
Tech Apprentice
I bought a GRP to my MRX4X too and I would like to know which glowplug do you use. The manual recommend #6 or #7 but I was reading in a Off-road forum that they are using #5 even #4 with 7mm restrictor. What are you using on on-road GRP?
Last edited by Wascheck; 06-24-2008 at 10:03 AM.
#9
Suspended
This might sound stupid, but have you tried being gentler on the trigger finger?
I have plenty of racing buds that don't get near the mileage I do (and they get heavier tire wear too), but they're all the types that are very heavy on the throttle even on the short straights and twisty bits.
During practice sometimes I'll find myself searching for different lines and speed, and I always find myself getting worse mileage (tank time) than during racing. I'm generally heavy on the throttle, but only when it's neccessary and useable.
I have plenty of racing buds that don't get near the mileage I do (and they get heavier tire wear too), but they're all the types that are very heavy on the throttle even on the short straights and twisty bits.
During practice sometimes I'll find myself searching for different lines and speed, and I always find myself getting worse mileage (tank time) than during racing. I'm generally heavy on the throttle, but only when it's neccessary and useable.
#10
Tech Master
iTrader: (2)
1) use a lower % of nitro - this will require that you lean the High Speed Needle and it will give more run time.
2) add a .1mm shim to the engine - this also will require that you lean the HSN which will give you more run time.
Lee
#12
Thanks for ya input guys . I have only ran the car at 3 races so I will try a few of your adjustments.