Rotary 2 stroke fuel mix ratio???

[heathyoung]

They are a reasonably generic CDI, I'm trying to remember how it works again - I'm pretty sure its a rev limiter as the CDI is different for the US market. Its a 3 wire jobbie IIRC, with a separate ignition coil. Silicon chip published a static advance CDI schematic ages ago, I have a subscription so I should be able to dig it up for you.

The pitbike ones are often a 3 wire with some advance integrated into them, so you could push a bit more out of it.

 

[BoltsMissing]

If I remember rightly, ( can't find the documentation for now ) the rev limitation is caused by making it 4-stroke or even 6-stroke.
Meaning, making it fire every 4th or 6th stroke if the revs. reach a certain limit.
Can that barrier be removed ?

 

[rooooboy]

They are a reasonably generic CDI, I'm trying to remember how it works again - I'm pretty sure its a rev limiter as the CDI is different for the US market. Its a 3 wire jobbie IIRC, with a separate ignition coil. Silicon chip published a static advance CDI schematic ages ago, I have a subscription so I should be able to dig it up for you.

The pitbike ones are often a 3 wire with some advance integrated into them, so you could push a bit more out of it.

I am willing to try and change the CDI, i took the bike for a road test last weekend and it ws severly underpowered, up a hill, compared to my Grubee 66c. i feel it may well be in the centrufugal clutch, but ptretty much anyhill it felt like th emotor wasnt doing anything.

it def runs a lot quiter than myu grubee! pity though because the bike is cery comfy! just needs more balls! hahahaha

 

[loquin]

If I remember rightly, ( can't find the documentation for now ) the rev limitation is caused by making it 4-stroke or even 6-stroke.
Meaning, making it fire every 4th or 6th stroke if the revs. reach a certain limit.
Can that barrier be removed ?

I've read that the CDI is what causes it to stop firing on every cycle. IF you can replace the CDI with one without the RPM limit...

 

[heathyoung]

Its dropping the spark then - probably just a simple lowpass LC filter.

Here is the article - http://www.siliconchip.com.au/cms/A_110499/article.html

Basically a non-rev-limited CDI, 3 wire input.