Hi all,
sharing my 'ancient' F102 car. I got this one in
1995 (originally from 1992), based on the
F102 chassis. At the time, it was equipped with a
TK-S03 steering servo,
Acoms AT-5 ESC, and powered by those 7.2 V
NiCd packs. Communication went via the
40 MHz band. In the years following, I added an aluminium front body mount, larger snap pins, an aluminium differential joint set for the steel rear axle, a hi-torque servo saver, and rear aluminium motor mount, ball-bearings on all axles.
After collecting dust for nearly two decades, I took it from the shelf and drastically updated the car:
- Increasing the height of the central upper deck to accommodate larger batteries (I went with NiMH... didn't feel to secure about LiPo).
- A Reflex Stick Pro 3.1 LCD 2.4 GHz FHSS 4-channel transmitter and receiver (supporting ABS, EPA, DR, and EXP).
- A new Mtroniks tio Storm 14 electronic speed controller.
- Replaced the engine with a brushed Mabuchi Sport Tuned RS-540 23T engine (silver can), and fitted with an extra heat shield. The rear axle was replaced with a carbon axle.
- The steering servo was replaced with a high voltage splash-proof brushless digital HRC Racing HV titanium gear 44 kg torque servo, and the fixed steering rods were replaced with adjustable blue anodised aluminium turnbuckles of 32 mm and 50 mm and accompanying reinforced adjusters (short and long).
- The central damper system was replaced with a TRF special aluminium tension-adjustable damper, filled with medium damper oil, in addition to new front springs.
- A SkyRC GSM-015 GNSS speed and GPS positioning sensor was installed that allows full trajectory sampling up to 10 Hz (their newer version is compacter, but does not store the trajectory).
- In addition, a SkyRC GC-401 gyroscope was initially mounted near the middle of the vehicle for additional steering assistance. It was then replaced with a Yokomo DP-302 V4 aluminium drift steering gyroscope (with assist mode) and moved to the centre of the vehicle on top of the bridge. The car now easily takes high-speed corners without drifting out of control.
- Those pesky and painful-to-the-fingers Tamiya-style battery connectors were also replaced with IC3 ones.
- The lexan cockpit has been equipped with white LED lights and a rear red LED light.
I also spent some time on figuring out which
other tyres it can be fit (squishy rubber tyres taken from the F103 chassis), incl. bearings to accommodate the different front axle diameters.
It now weighs approximately 1.4 kg
See my website for more descriptions, photos, and movies (I'm not allowed to post photos here...).