Originally Posted by mtveten
I run my f103 on a smooth large parking lot track and it works just fine. Compared to a touring car the 103 has is faster down the straight but doesn't carry the same speed through the turns. Lap times with low power motors such as a silver or black can are faster with the 103 than a sedan but as power increased the car's lap times just don't fall as much as a sedan's do. At the large track I race on we have switched over to foams on the 103s to help put the power down with higher power motors.
If you race on a smooth track the F103s are great. The cars are cheap & durable with good speed.
I've recently finished my F103GT and have some comments:
- the car is ballistic with 4 cell/ 19T.....less inertia, faster accel. w/o wheelspin and much improved cornering speed.
- it's easy to increase caster with a simple mod-- and it looks like the front susp was designed for this: remove the small nip of plastic at the front of the upper hinge pin carrier and replace it with several motor washers to restore the original length....now, to increase caster, move one or more of the washers to the rear of the hinge pin carrier and replace the upper A arm. this effectively moves the upper arm to a more rearward position and increases caster. I've found this to decrease initial turn-in, and nicely increase mid-corner steering.
-Add tweak screws to the O-ring susp by applying 5-min epoxy to the cavity under the front battery-holder/bulkhead thingy, then drill small guide holes thru the bulkhead and apply self-tapping screws thru this to just touch the T-bar.
- This car loves soft rear inserts and hard fronts--just like its F1 cousin.
- For those with a heavy trigger finger, a current limiter---- in the speed control, or the transmitter--- is a good idea!!!
- Simple car, Really fast with 6C silver can or 4C 19T.......FUN!!!!!!