TF6 75% completed

Outstanding items : build shocks, fit an old body shell and wire the ESC.

This time I will use Tekin RS Pro with the Tekin stock motor, all matching the red color tone :)

Photon with Yokomo BD plastic rear ball diff

Durability of the Top ball diff hosting and gear diff is questable ... fit in the Yokomo BD ball diff and it is almost direct fit with a few mm of shims. Will test it out in coming weekend.

Lastest pictures on FF03Pro

I tested run FF03Pro today with the following setting :

Camber : F/R -1/-1.5

Shocks oil : 40wt all around

Ride height : F/R 5mm

Droop : F/R 6/6mm

Anti-roll bar : F/R yellow/red

All the rest are the same as default.

Running with HobbyWing 120a 518stock with SpeedPassion 13.5R gear ratio at 6.4, turbo/boost are both enabled.

Chassis has a lot of roll during corners, can apply a light brake before entering sharp turn. Overall handling is very smooth and a little bit of understeering.

The car has good top speed on long straight but a bit lack of acceleration in in-fields. This should be compensated by more timing punch or different gear ratio.

Happy first run today !

FF03Pro

Progress on my FF03Pro so far - pending for a suitable 13.5R motor and plan to use the stock profile on HobbyWing 120A ESC.
Hope to test run in a couple of weeks time !

SpeedPassion stock profile setting with X12 stock spec motor

After a few weeks of testing on Photon, here is the latest setting of the SP GT2.0 with stock profile (0528 stock) :
DDRS - 7 (default)
AMTS timing - 3
Boost timing - 8 (max)
Turbo Delay - 0.2sec
Timing punch - 850rpm/degree

My x12 is running a LRP x12 13mm rotor (original rotor was damaged) and final gear ratio at 1:7.09.

After 6min run time, x12 is at 95-105C range under hot sunny day in Singapore BK track.

The single laptime and overall 5min laptime is now closer to what I can achieve with T3/SXX stock spec/x12 stock spec motor. I am happy with the performance for now.

Also tested different setting for DDRS (eg 4 or 5), the top speed improved but the acceleration was not as good with same gear ratio. Changed the gear ratio to around 7.4 but then overall laptime was not as good as the current setting. DDRS is more like ESC operating freq (similar to the KO VFS1 ESC for brush motor), higher freq (lower DDRS value) will produce more top speed but less torque.

Latest changes in Photon

The new alloy spur adapter has not arrived yet and there are some minor changes on my Photon since last meeting :

(1) Change to Sythe front solid spool - it is not direct fit but required some shiming and filing, tested for a few packs and quite like this 416-alike front spool. Front pulley is from Yokomo BD.

(2) Rear low friction belt

The previous BD plastic spool was damaged in a small crash. It has been serving my BD and Photon from many months ;)