Author Topic: Dolmar 7900 Porting Info  (Read 3795 times)

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Offline Cut4fun

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Re: Dolmar 7900 Porting Info
« Reply #40 on: January 15, 2012, 02:23:05 pm »
Sometimes I think people are pushing the envelope just a little to far to be calling saws a woods ported work saw.  Here is a 7900 crank after a porter in northern Ohio had a oops with a customers saw.  :o Yep I seen this first hand.
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Offline EHP

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Re: Dolmar 7900 Porting Info
« Reply #41 on: January 15, 2012, 07:12:49 pm »
piston broke or a ring snagged ?

Offline EHP

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Re: Dolmar 7900 Porting Info
« Reply #42 on: January 15, 2012, 07:15:49 pm »
I like the answer you get sometimes when they are talking about these GTG's there having now and out right tell you that the saw they have is a work saw so it will not be even close to the others , Last time I thought a woodsport meant it was to be able to go cut 8 hours straight everyday without any trouble not 3 cookies and call it a day

Offline Cut4fun .

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Re: Dolmar 7900 Porting Info
« Reply #43 on: January 15, 2012, 07:17:45 pm »
Memory is pretty bad on exact reason, but thinking it was due to snagging.
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Offline Mastermind

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Re: Dolmar 7900 Porting Info
« Reply #44 on: January 15, 2012, 08:48:53 pm »
I like the answer you get sometimes when they are talking about these GTG's there having now and out right tell you that the saw they have is a work saw so it will not be even close to the others , Last time I thought a woodsport meant it was to be able to go cut 8 hours straight everyday without any trouble not 3 cookies and call it a day

I couldn't agree more. The saws I build are for real use. I wouldn't cut a port to 70% or even more and think that saw would hold up to a hard weeks work. Or build a saw with over 200psi and think that saw is a real work saw.

I'll start on two 7900's tomorrow.....real work saws though. I asked the owners what their plans were for these saws and if they had any interest in going with a different piston or anything. Firewood and GTGs is the plan for them both so durability is what I'm shooting for.

Now I will be building a 7901 for myself that might be a bit different. :)
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Offline EHP

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Re: Dolmar 7900 Porting Info
« Reply #45 on: January 15, 2012, 10:28:18 pm »
Either way that 7900 I'm sure the piston broke as I have seen rods that look like that before  ;D just not on a 7900 , If a guy is really going to use a saw to block firewood with it has to be built to handle all the heat a motor is going to make , Not sure if any one else does this but on a new saw I will cut cookies hard with it then place my hand above the bar cover side plate and feel how hot the heat is coming of the jug , the flywheel will blow the heat out on your hand , if the heat is real hot then she is to hot for a worksaw in most cases

Offline EHP

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Re: Dolmar 7900 Porting Info
« Reply #46 on: May 06, 2012, 08:14:15 pm »
just working on a 7900 with heated handles , man lots of wires  that is for sure , never seen a heated 7900 before , its pretty much new but had a fight with a tree and the tree won  ;D, it will be ported before the night is over

Offline Cut4fun .

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Re: Dolmar 7900 Porting Info
« Reply #47 on: June 29, 2014, 01:41:15 pm »
Good read.
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Offline pete

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Re: Dolmar 7900 Porting Info
« Reply #48 on: June 29, 2014, 11:49:55 pm »
I enjoyed it as well  :) another couple of hundred threads like it and I might be able to actually understand it all. But bit by bit it is making sense

Offline Mastermind

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Re: Dolmar 7900 Porting Info
« Reply #49 on: June 29, 2014, 11:59:37 pm »
A crapp load of saws have passed in front of me since this thread started.

Here something I tried not long ago.

Too wide on the uppers really......but a fun saw to run.

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