faster chain speed

[Stubby]

Can any one tell me how to calculate the number of extra drivers in a chain if you are going up from a standard 7 pin rim to a 9 pin rim ? I suppose its not as simple as 2 extra driver for the 2 extra slots in the rim sprocket ? Or is it ? ?

[WoodED]

just out of curiosity what saw are you stepping up to a 9 on,

[Stubby]

I have some 9 pin .404 rims that would go on my 395 . ( ported muffler da da da de daa )

[Chris Sheppard]

going 7 to 8 i've never needed any more links so I'd guess an extra drive link should be enough for 7 to 9 - could be wrong though as that wasn't on a 395

[WoodED]

nice one, all you need now is the full wrap handle

[Cut4fun]

I dont know on 404. But on 3/8 on a 084 I went to a 9 and had to add 1 link . Trial and error have at it.

[Stubby]

Yea well it came with that . Its an expensive after market one which is fatter and allows the saw to sit on flat ground with the bar off the ground (long bar I should say ) Its running a 36" .404 on a GB titanium . It came from a buddie of mine in Canada . I think its a 2004 ish Can't remember will have a look - - - no sorry 02 . Anyway it goes like stink. Fells to me it runs faster than my 3120 but of course not as much torque .

[Charlieh]

will those actually fit without modifying the tail of the bar? as i would think going upto a 9pin will be massive, i run 8pin .404 on my 084 and I would say that the sprocket sits pretty close to the bar on that

[skyhuck]

will those actually fit without modifying the tail of the bar? as i would think going upto a 9pin will be massive, i run 8pin .404 on my 084 and I would say that the sprocket sits pretty close to the bar on that

 

It will depend on chain length, as with a longer chain you will adjust the bar further out, only problem may be insufficient adjustment left as the chain wares.