compatible saws on a double power head mill

[Joe Newton]

So a 660/440 pair would easily out cut a much larger saw?

[Toad]

Would you want the bigger saw pulling the chain on the cut side? Let that one use it's greater power and torque and the smaller one help pull the unloaded side of the chain back and help the larger saw out?

[billpierce]

Rob, have you tried it with an old like a 076 and 880?

I stopped doing this as when I let go the 076 throttle it was still going, and sounded to me like it was screaming. This is in the cut....be interesting to know how you found it. My preference was for saws more closely matched I.e a 88 and 66 or 076 and 050 etc

[billpierce]

Would you want the bigger saw pulling the chain on the cut side? Let that one use it's greater power and torque and the smaller one help pull the unloaded side of the chain back and help the larger saw out?

Yes, I'd put the bigger saw on the cutting side

[billpierce]

So a 660/440 pair would easily out cut a much larger saw?

I'd say so yes, but as rob says getting set up can take surprisingly longer

[Stephen Blair]

Getting the right guys on the saw is key.
There are the trigger happy tone deaf throttle blasters so the other guy needs to constantly be on the other throttle balancing it out depending on wood density and sharpness of the chain.
Getting the chain tension is key, when using big bars what may seem tight enough isn’t once you get going, too slack and it will throw a loop out the pushing chain side.
Who ever is the more heavy handed, put them on the pushing saw, won’t take long to tire them out and calm them down.
As for working 2 different saws, id imagine it’s all down to how you operate them.

[trigger_andy]

On 26/11/2018 at 11:38, Rob D said:

 

Yep but I did an article here - every combo of very different mis matched saws worked - as in worked in practice rather than not worked in theory. It doesn't seem to matter how much I say this or write it not many seem to believe me Any combo between a 70cc and 120cc saw should work.

 

Double ended milling is awesome when it works - and a right pain in the backside when it does not.

 

 

Rob, how do you connect a 066 and a 088 to the same bar? 

[Rob D]

On 27/11/2018 at 14:43, trigger_andy said:

Rob, how do you connect a 066 and a 088 to the same bar? 

If you change the drive rim/sprocket to .404 on the 066 and use one of these with the 066.

 

[trigger_andy]

3 minutes ago, Rob D said:

If you change the drive rim/sprocket to .404 on the 066 and use one of these with the 066.

 

Perfect, cheers.

[Rob D]

On 26/11/2018 at 23:02, billpierce said:

Rob, have you tried it with an old like a 076 and 880?

I stopped doing this as when I let go the 076 throttle it was still going, and sounded to me like it was screaming. This is in the cut....be interesting to know how you found it. My preference was for saws more closely matched I.e a 88 and 66 or 076 and 050 etc

 

Not tried with an older style saw myself - but I would have thought the same principles would have applied ie once the set up is fully engaged in the cut it will slow both saw down to whatever the cut speed is.

 

But like most things there are prob no truly hard and fast rules.