Advice needed...strobe light variotronic timing on Muggy 186

[bazabod_downunder]

Seeking advice on final set-up, currently showing 21 degs on a relatively fast set-up, ideally as per blurb & Cam Lam sight says it should be around 19 degs with an expansion....question is what revs should it be set at to set it at 19degs? as one man's fast idle is another slow tick over, have ordered a rev counter from those very nice ppl at MB...ultimately I'm not looking at tuning it to the max, just a reliable fairly quick set-up.
Any advice on or others set up using a similiar configuration would be greatly appreciated

[Tom Russell]

question is what revs should it be set at to set it at 19degs? as one man's fast idle is another slow tick over

The instructions for the Super Monza state - which uses the Varitronic - set 19 degress at 1500-1800rpm.

Hope this helps.

Cheers

[tea5ive]

what rev counter are you using ? as most wont work with a varitrickery ignition due to the waisted spark i.e 2 sparks per cycle. dont wont you waisting your cash and time etc. i set mine at fast idle/tick over .cheers simon

[wack 63]

I just don't understand why anyone would set it at 19 at fast tick over. According to the graph on the instructions the timing is static until 4k then starts to retard so by 8 k it is then firing @ 11degs. This may be safe but what a waste of power at lower revs. Look at it this way , if it was a static system you would opt for somewhere between 19 and 16 degs and be happy so why have a retard system and not make use of it? More advance brings improved starting,acceleration and better fuel economy and the retard brings safety when the revs rise. For this reason on TS1's etc I set the fast tick over at 23 to 25 degs and never had a problem revving to 9500 +

[drunkmunkey6969]

25 degrees might contribute to heating issues when 'around town' at low revs, possibly compounded by riding at partial throttle and also with low fan speeds due to lower revs.

[wack 63]

I agree , what suits one person/ motor wont for others just that it seems to work for me.

[Tom Russell]

what rev counter are you using ? as most wont work with a varitrickery ignition due to the waisted spark i.e 2 sparks per cycle. dont wont you waisting your cash and time etc. i set mine at fast idle/tick over .cheers simon

If you want a rev counter that works with the Varitronic, then both the SIP speedo/rev counter and Koso (digital) rev counter work well (assuming you set them to work with the 2 sparks per cycle). Out of the two of them, I'd go for the SIP speedo/rev counter (which I purchased after the Koso) as it's easier to read (though the revs only start showing at 2k onwards).

[tony]

I just don't understand why anyone would set it at 19 at fast tick over. According to the graph on the instructions the timing is static until 4k then starts to retard so by 8 k it is then firing @ 11degs. This may be safe but what a waste of power at lower revs. Look at it this way , if it was a static system you would opt for somewhere between 19 and 16 degs and be happy so why have a retard system and not make use of it? More advance brings improved starting,acceleration and better fuel economy and the retard brings safety when the revs rise. For this reason on TS1's etc I set the fast tick over at 23 to 25 degs and never had a problem revving to 9500 +

But that's the instructions for a super monza. It's been designed to run with what they say. Heat is a killer of two stroke engines.