donwhit

Hi Skiddins,

motor timing was 35deg, motor came off at 50deg.

Speedo is a Tekin RS Pro, firmware is 212.

Sensored
Timing advance 40
Timing boost 49
Turbo boost 13
Turbo delay 0.12
Start RPM 2721
End RPM 10001
2.0 ramp rate
Min throttle 10
Min brake 10

Skiddins

What's the difference between Timing Advance and Timing boost?

9.61 FDR sounds like extremely low gearing.
Was anything taller tried, and what was the result?

I will post my test settings for Aldershot later.

donwhit

Hi Skiddins,

short answer is: i don't know, I copied Ians settings off his laptop. Maybe someone else can provide this Tekin info.

Yes it is very low, but remember this was an indoor track(Stafford).
We tried higher gearing but the motor seemed lifeless. With the standard(BRCA) rotor we think it is a revvy motor.

We did try higher gearing but the motor had no lift off the corners. We intend to try one tooth less pinion on Thursday.

Skiddins

To give you some idea I was running 5.16 to 5.70 at Aldershot (Black Diamond ESC) which has a 50m straight and was fiddling with motor and ESC timing.

From my notes;
Aldershot,
3000rpm, 45mid, 9000, 50top, 200 delay
FDR 5.70 Motor timing 20deg, bit sluggish, temps circa 55degC
FDR 5.70 Motor timing 25deg more lively, temps circa 65degC
FDR 5.50 Motor timing 27deg still lively, temps 71degC

3000rpm, 42mid, 9000, 47top, 200 delay (Fastest Laps were with this setup)
FDR 5.50 Motor timing 27deg still lively, temps 61degC
FDR 5.16 Motor timing 27deg felt sluggish, temps 71degC

3000rpm, 40mid, 9000, 45top, 200 delay
FDR 5.49 Motor timing 27deg felt OK, but laptimes were down very slightly, temps 65degC
Try FDR around 6, with 20deg motor timing and 50-55 timing on ESC.

Remember, the BD uses 'true' timing for it's figures whereas I believe the Tekin isn't the same, they certainly aren't like for like.

I will try gearing down this weekend at West London and see what happens.

Skiddins

P.S. out of interest, was his motor 'screaming' or was it quite quiet when going round?

Craig W

iTrader: (1)

it was quite

ThunderPowerRC

Here are some settings to start. These are form IIC and Snowbirds with a Tekin ESC.

17.5 no boost tc
35 degress of timing
Blue rotor 3.7 - 3.8 fdr
Red rotor 3.9 - 4.0 Fdr

This is for a track snowbirds size

Blinky 17.5 12th scale
red rotor
40 degrees of timing
95-100mm rollout
This all depends on how good your car is. The better the car the higher you can roll it out.

17.5 Boosted TC
50 boost
15 turbo
5000 -14000 rpm
.1 delay
10 min throttle
10 min brake
2 ramp

geared around 5.5
Red rotor


12th scale 13.5 boost
Red Rotor 35 degrees timing
45 boost
5 turbo
8500 end rpm
1600 ish start
.15 delay
10 min throttle
10 min brake
2 ramp

70mm ish rollout depends on track layout and size

haywood

iTrader: (49)

Here are some settings to start. These are form IIC and Snowbirds with a Tekin ESC.

17.5 no boost tc
35 degress of timing
Blue rotor 3.7 - 3.8 fdr
Red rotor 3.9 - 4.0 Fdr

This is for a track snowbirds size

What rotor comes with the motor?

LOW ET

iTrader: (106)

red rotor is stock.

was told the blue rotor is the hot ticket.

haywood

iTrader: (49)

Thanks!

hanulec

iTrader: (28)

don't forget to put a fan on that 'blinky' 17.5 TC motor -- otherwise it might blow smoke

donwhit

Hi Skiddins,

Tried one pinion lower (16) at Stafford tonight. Ian said it was better on the short straights. Also tried a 15, gutless. Also tried an 18, seemed overgeared on same speedo settings.

Also tried the thin topdeck in the last round, Ian reckoned it gives more 'in corner' steering on a 2012.

Skiddins

Cheer's.
If I'm lucky I might get some more testing done tomorrow night at Newbury;

http://www.youtube.com/user/NewburyRCC

P.S. don't know if I have enough spurs and pinions to get that low.
If I do get there I will be starting at 7.60FDR with 26deg on the can.

DaveG28

iTrader: (65)

Guys, could do with a little advice, even though I run these in off road.

Basically I am running in a 2wd buggy and need to kill a bit of the lower end torque. The timing is at 20 degrees (it's a 7.5 motor). Temps wise it doesn't get unreasonably hot currently. I don't have a "boost" esc (sxx v1).

My question is: could I sensibly take the timing up to 30-35 degrees in this setup to try and dampen the bottom end a bit? How steep is the temp ramp when you increase timing on these?

Skiddins

Look at post #124 above for my findings on temps and motor timing.

defcone

iTrader: (15)

for the snowbirds /iic setups, how much timing on the can was used?