What degrees timing....

[drunkmunkey6969]

....are you running, on what engine.....and why?

Interested to know what timing people are running, on what engine set ups...and why...(ie - a mate told them to, manufacturers setting, dyno tested, road tested etc etc)........

[bristolmod]

Generally 19 BTDC on all my scoots- simply because I tend to err on the side of caution.

Not totally convinced as to the "official" reasons ( crap modern petrol etc) for doing this.

Bikes idle and run nicely, but I've always got a hankering to advance the timing a tad

Chris

P.S. All are 6v points as well.............

[Furious George]

I think my TS1 is at 18 degrees maybe even 17 but can't remember exactly
I probably got the setting from reading something in Scootering a while back. It has been set at that for a good few years running unleaded.

FG

[leigh]

Running RB at 19 degrees, when built kept advancing ignition until the engine pinked. Then backed of a tad. strobed and lines up at 19 degree mark. All test runs where done up a hill to get the engine to labour.

Leigh

[J1MS]

TS 1 running at 16 degrees, center plug, Compression ratio at 12.2-1

TS 1 running at 19 degrees, Off set squish, Compression ratio at 9.1-1

Rapido 225 Classic at 18 degrees, Off set squish, Compression ratio at 8.9-1

all timings set using dead stop method, for TDC. Compression ratio's (Head volumes) measured using a burette (very accurate).

[Robi D]

deanspeed 190 with a varitronic, running at 22. i can't remember why! but my thinking is that this is ok because of the varitronic.

[drunkmunkey6969]

TS 1 running at 16 degrees, center plug, Compression ratio at 12.2-1

TS 1 running at 19 degrees, Off set squish, Compression ratio at 9.1-1

Rapido 225 Classic at 18 degrees, Off set squish, Compression ratio at 8.9-1

all timings set using dead stop method, for TDC. Compression ratio's (Head volumes) measured using a burette (very accurate).

Cool, thanks.

And what prompted those particular choices of timing degrees?

[doggbhoy]

mugello 225 fast road tune, centre squish head ,matched casings ,varitronic 17 btdc at 6000 rpm
that is what the tuner told me to set it at

[coaster]

Mugello 186, 1.3 squish, Reaper head, Indian electronic stobed at 18 degrees following advice from (I think?) stickies book.

[drunkmunkey6969]

anyone got any hard n fast theories about timing.....? arriving at choice of degrees? or just push till it pinks?