Project Stumpbroke Dolmar 117

[Stumpys Customs]

This was a fun project. A nice looking Dolmar 117.

Stock video.
[video=youtube_share;PDs5wsjQr3A]http://youtu.be/PDs5wsjQr3A[/video]

 

[Dan_IN_MN]

So.......how long did that 117 take? I've been wondering what you've been doing with your time! Bout time you post something! :msp_biggrin:

 

[Stumpys Customs]

So.......how long did that 117 take? I've been wondering what you've been doing with your time! Bout time you post something! :msp_biggrin:

Not very long. This is the first one I've done in a while that I haven't done a thread on already.

 

[Stumpys Customs]

Typical Sachs Dolmar stylins.

 

[Stumpys Customs]

 

[Stumpys Customs]

I smoothed out the intake block & matched it to the cyl.

I removed the baffle from the muffler & added a tube for it to breath out of.

 

[Stumpys Customs]

All ready to go to the woods.

Didn't turn out to bad. :msp_biggrin:
[video=youtube_share;tomlwAVrlIE]http://youtu.be/tomlwAVrlIE[/video]

 

[tallguys]

Very nicely done!

 

[3000 FPS]

That Dolmar sounded like it gained another 1500 RPM's after porting. It also sounded like it held those RPM's pretty good in the wood. Nice job. I always like the way you map out your cylinders before grinding.

 

[kmcinms]

Great work Stumpy

That thing turned into a hornet, and stayed pizzed off for about 20 seconds. :msp_biggrin: Looks like a 9sec. gain.

 

[sachsmo]

Is there much to be gained by hogging out the lowers that much?

 

[7sleeper]

Looks like you had a lot of "meat" to work with on that cylinder. Modern cylinders look more filigran if I may say so. Did it make it easier for you?

7

 

[barneyrb]

I got 26 seconds on the first cut and 19 on the second for a 27% improvement........not too shabby, good job there Stumpmiester........

 

[j_franich]

A nice running saw indeed. If you don't mind sharing your trade secrets, what do you use to draw your layout lines in the cylinder? Thus far I've been using thing masking tape, but I'm always worried about it sliding.

 

[Hedgerow]

Is there much to be gained by hogging out the lowers that much?

Yes, as long as it fits with what you're going for...
Some saws benefit greatly from the added case volume.

 

[Dan_IN_MN]

A nice running saw indeed. If you don't mind sharing your trade secrets, what do you use to draw your layout lines in the cylinder? Thus far I've been using thing masking tape, but I'm always worried about it sliding.

http://www.arboristsite.com/chainsaw-stickies/204324.htm. He made a thread just on how he does porting. :cool2: Which was a VERY cool thing to do!

 

[otisjr]

Great job Stumpy! thanks that thing sounds great and keeps eatin the wood. Do you want me to come pick it up? wow I like it already, for a 31 year old saw, all it needed was stump broke. thanks again.

 

[Hedgerow]

Congrats on the saw... It's a fine specimen...
And now it runs like a saw should!!!
You're gonna love it...

 

[Stumpys Customs]

Is there much to be gained by hogging out the lowers that much?

Not as much material was removed as it looks. Mainly just widened out the back side(ex side) and lowered a hair. The rest was just blending.

 

[Stumpys Customs]

Great job Stumpy! thanks that thing sounds great and keeps eatin the wood. Do you want me to come pick it up? wow I like it already, for a 31 year old saw, all it needed was stump broke. thanks again.

You can pick it up if you want. I think you'll like it. Still has the same Sachs attitude, just a bit meaner.:msp_thumbup: