UK Rich
ArboristSite Operative
As well as relocating the end pins? Good work. What sort of compresion numbers are you getting - if tested?
Project Stumpbroke MS260 PRO
- Thread starter Stumpys Customs
- Start date
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As well as relocating the end pins? Good work. What sort of compresion numbers are you getting - if tested?
Me likey:biggrin:
old-cat
Fir Man
Ok, can someone please tell me what's the deal with the MS260 cylinders??? Mine is not the Pro and it has only about 1/8" squish band.
How much squish are you running with that wide squish band?
M
moody
Guest
My 350 holds around 10,600 in the cut with 16in b&c. I don't have a lathe or a mill so its just my port work. How much would it really help to cut the squish on it?
Stumpys Customs
Stumpbroke
.019"
I haven't checked the comp yet. I'll do that in the morn.
just as a reference, the last 350 I done was way stronger than this 260. Gotta love quadports:msp_w00t:
So I willl have to say yes, the squishband does make a difference. If it didn't, I wouldn't go through the headache of doing it. :msp_unsure:
Hedgerow
HACK
Lotsa variables there...
M
moody
Guest
Such as ? I'm all ears not trying to highjack the thread just thought I'd ask. I'm sure the increase in compression ads torque. But would it be worth trying to find a mill or lathe to use?
Stumpys Customs
Stumpbroke
You are correct.:msp_wink:
Stumpys Customs
Stumpbroke
bar and chain;
lenghth
raker depth
sharpness
angle of cutters
size (3/8 or .325)
cutter profile.
wood;
species
hardness
frozen?
dry?
wet
green
dead (pithy)
size
operator;
push to hard/not hard enough
tune of the saw, hours on the saw (break in), ect
Just to name a few.
M
moody
Guest
Well here's a quick idea of what I'm talkin about. Don't mind the 362 its not mine and it needed adjusted.
16in b&c
.325
2 strokes each off the Rakers
Frozen sycamore
Dead approximately 2 years
YouTube
If you guys know how to get the video to show up in the window it'd be awesome to know the trick.
16in b&c
.325
2 strokes each off the Rakers
Frozen sycamore
Dead approximately 2 years
YouTube
If you guys know how to get the video to show up in the window it'd be awesome to know the trick.
Hedgerow
HACK
Link no workie...
But cutting the squish will reduce the volume of the combustion chamber. It's just another tool in the belt of a saw modder, to get what they're looking for, in timing and compression.
But cutting the squish will reduce the volume of the combustion chamber. It's just another tool in the belt of a saw modder, to get what they're looking for, in timing and compression.
Stumpys Customs
Stumpbroke
Here's yer vid buddy.
[video=youtube_share;TPGPsFleXn0]http://youtu.be/TPGPsFleXn0[/video]
Stumpys Customs
Stumpbroke
Right, cutting the band also allows more room to play with the ex & transfer port timing.
It's not all about making compression.
M
moody
Guest
What kind of wizardry did you use to make the video do that?
Stumpys Customs
Stumpbroke
Here's the last 350 I done. I think it was a 20" 3/8 on it.
[video=youtube_share;-yGnkDLPDpA]http://youtu.be/-yGnkDLPDpA[/video]
[video=youtube_share;-yGnkDLPDpA]http://youtu.be/-yGnkDLPDpA[/video]
M
moody
Guest
Right, cutting the band also allows more room to play with the ex & transfer port timing.
So what you're trying to say is I need to find a mill
Hedgerow
HACK
I'll trade ya the wood boss for it...
The 350 in the vid that is... Stihls are worth more than those cheap ole' homeowner things...
And stuff....
The 350 in the vid that is... Stihls are worth more than those cheap ole' homeowner things...
And stuff....
Last edited:
M
moody
Guest
Little piece of humbled pie there. I've got a video of mine running a 20 but its holding 9,500ish in the cut. Looks like yours pulls around 11? I guess the squish is the next step to catching up Haha.
M
moody
Guest
Like it enough to trade me the black wood boss?
