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Mastermind Meets The Echo CS-355T

Mastermind

Mastermind

Work Saw Specialist
Joined
Nov 21, 2009
Messages
36,453
Age
55
Location
Tennessee
I've had this saw sitting here in the box for a few weeks now. I hoped to have the Echo CS-610EVL done before I started this one, but it ended up needing an oil line and that stalled us again on it.

I really want to be able to take some time to do a through job on dissecting this little bugger......it has loads of potential.



It's a well designed unit.....fits in the hand very naturally. Jon ran it for a few minutes and decided he needed one. Up till now the Stihl 200T has been the only top handle saw that has interested him at all.



I think this is Jon's way of saying we have voided the warranty. :laugh:

 
Mastermind

Mastermind

Work Saw Specialist
Joined
Nov 21, 2009
Messages
36,453
Age
55
Location
Tennessee
This is a non strato, clamshell designed saw that's very light and nimble. We ran it several minutes and were impressed as hell with the snappy throttle response and power that it has.

Jon's stripping her down so we can see what the designers gave us.



Spur drive here......I would like to see a rim instead but who am I?





I'm really liking the side exit exhaust. The way this was achieved is total genius on the part of the designer......I like the oil pump drive too.

 
moody
M

moody

Guest
:popcorn: I'm fond of the smaller saws or the "pecker pole prunners" as my logger friend refers to them.
 
Mastermind

Mastermind

Work Saw Specialist
Joined
Nov 21, 2009
Messages
36,453
Age
55
Location
Tennessee
Now here's something that caused me to stop and stare for awhile......







Note that the ports are not centered with the crankshaft in the "normal" manner.

 
Mastermind

Mastermind

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Joined
Nov 21, 2009
Messages
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Age
55
Location
Tennessee
These were the little buggers that made me scratch my head......I wondered why they crammed these in the transfer tunnels.



I also wonder what happened to my camera settings. :laugh:

 
Mastermind

Mastermind

Work Saw Specialist
Joined
Nov 21, 2009
Messages
36,453
Age
55
Location
Tennessee
I'm using a different camera and a lot of my pics of the porting didn't come out very well......here's a few more that did.







 
deye223

deye223

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Aug 23, 2011
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australia
These were the little buggers that made me scratch my head......I wondered why they crammed these in the transfer tunnels.



I also wonder what happened to my camera settings. :laugh:

them and the stuffers to keep the velocity up ???????

don't mind me just thinking with no knowledge
 
Mastermind

Mastermind

Work Saw Specialist
Joined
Nov 21, 2009
Messages
36,453
Age
55
Location
Tennessee
I didn't want to disturb the flow velocity of this tight design too much so I just opened the entrance to the auxiliary transfers some and widened the uppers. The intake was widened and lowered a bit and the exhaust was raised a fuzz and widened. For got muffler pics but it's an open can so modding it is a breeze.

I don't think we should widen this any more at all......

 
watsonr

watsonr

Aftermarket Parts Pusher
Joined
Jan 3, 2010
Messages
7,088
Location
Started in Idaho, ended up in Virginia!
So you agree that throwing hem away would be a mistake? :msp_biggrin:
Yep... figure out how to open the intake earlier to take advantage of the velocity. An earlier opening also means decreased velocity as the charge may not build to its full potential.... but you should see larger volume.... and more power!
 
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