air chainsaw

[treequip]

Was I the only one that thought this thread would be about pretending to use a chainsaw in inappropriate moments, like playing air-guitar?

 

Now I have a mental lmage of you rocking your air chainsaw to a bit of Metallica.

[felixthelogchopper]

I thought Mr Bolam had done another vid.

[Chunkymunky]

Was I the only one that thought this thread would be about pretending to use a chainsaw in inappropriate moments, like playing air-guitar?

 

Seconded.

 

On a serious note. If running a tool from vehicle mounted power source how do hydraulic ones rate? Have seen numerous firewood processors with hydraulic chainsaws fitted.

[Reddog]

If running a tool from vehicle mounted power source how do hydraulic ones rate? Have seen numerous firewood processors with hydraulic chainsaws fitted.

 

Slow, plus dragging around two stiff hyd lines wears quick on you.

Reminded me of using a 026 at half throttle but much harder to stall.

 

Processors have the advantage that being hard mounted so you can run the raker setting much lower so they take a heaver chip. Depending on chain pitch it may be anywhere from .045 to .09 chip setting compared to .02 to .025 on a hand held. Then to on processors the drive sprocket has upwards of 20 plus drive teeth to get the chain speed up closer to a petrol saw.

[Chunkymunky]

Slow, plus dragging around two stiff hyd lines wears quick on you.

Reminded me of using a 026 at half throttle but much harder to stall.

 

Processors have the advantage that being hard mounted so you can run the raker setting much lower so they take a heaver chip. Depending on chain pitch it may be anywhere from .045 to .09 chip setting compared to .02 to .025 on a hand held. Then to on processors the drive sprocket has upwards of 20 plus drive teeth to get the chain speed up closer to a petrol saw.

 

Thanks. Handy to know that.

[nooie]

We have two massive ancient Danarms powered by air my father used to use for diving jobs. The only time I saw them running was on quite a big compressor. I still have both saws. We also still use hydraulic drills and impact wrenches for work on piers, they work great, but the hoses have to be held by someone else or tied up because of the weight. A small chainsaw would be much easier I would say.

[JonnyVine]

Yes and at 90psi I make that 28kW delivered to the saw but why so much input for a 4hp saw?

.

 

Because air motors are hellish inefficient, hydraulic motors are better but as someone has pointed out, hauling 2 heavy, stiff pipes arround will soon wear you down.

 

I thought that type of equipment was only used for underwater purposes where a petrol engine would not operate? Buy a nice little MS241 and have done with it.

[Stubby]

Was I the only one that thought this thread would be about pretending to use a chainsaw in inappropriate moments, like playing air-guitar?

 

No. I thought that but by the time I read it there was all this talk of compressor size etc so I abstained .