KG441c
Keith
I always like the conservative approach? U can go back in but band-aids dont stick to H1R at 32 to1!!! Lmbo
Dyno tested....Mastermind's ported 261cm vs Stock 261cm Gotta see this one.
- Thread starter chadihman
- Start date
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I work some strange hours. Pays for the PSA. Yes, I do lay awake at night and graph things (in my head). Or do I lie awake?
Mastermind
Work Saw Specialist
Me too. There are times when I can't sleep at all. Too much on my mind......
MM, don't you have one of these (261CM) to sell?
Mastermind
Work Saw Specialist
I sold it this morning Duane.
I sure like mine even though it's not a CM! 
Mastermind
Work Saw Specialist
Dexter ended up grabbing the one I had for sale.
User Name Here
Lowly Firewood Cutter
I'm in for the testing of the 461! I've only got 5 months to wait! Is it really that far away? Geez....
KG441c
Keith
Me too! Randy is a busy man!! He will get to it and it will be worth the wait
DexterDay
Addicted to ArboristSite
I am glad Dexter bought your saw and took the pressure off of me. It sure was tempting.
fastLeo151
Addicted to ArboristSite
chadihman
Addicted to ArboristSite
I'm in awe of how the HP hangs on in the high rpms. Thats 2.362 HP more than the stock 261 at 13k. Has a pretty stable max HP between 10,000-11,500 rpm.
Mastermind
Work Saw Specialist
That really is pretty impressive. Not a huge gain at 9000.......but as RPM increases the spread gets insane.
I wish I had the knowledge to explain what we are seeing, but I don't. I made a hairy guess......and it paid off.
The way I stumbled onto what I'm doing to this saw is from studying a lot of different saws, and their factory timing numbers.
Thinking about the fresh air that is brought into the transfer passages, and what happens to that air when the transfers first begin to open, then looking at a 562s timing numbers, made me think..........I wonder what would happen if I raised the ever loving hell out the transfers in this saw?????
That's the best I can do for an explanation.
I wish I had the knowledge to explain what we are seeing, but I don't. I made a hairy guess......and it paid off.
The way I stumbled onto what I'm doing to this saw is from studying a lot of different saws, and their factory timing numbers.
Thinking about the fresh air that is brought into the transfer passages, and what happens to that air when the transfers first begin to open, then looking at a 562s timing numbers, made me think..........I wonder what would happen if I raised the ever loving hell out the transfers in this saw?????
That's the best I can do for an explanation.
KG441c
Keith
I hope a 461 headed ur way Chad has a hang up about it!!!! Lol
chadihman
Addicted to ArboristSite
How about I send you a couple 261 cylinders with my 261 for my 8/28 appointment? You do three different port jobs of your choice then I'll test each one.
chadihman
Addicted to ArboristSite
Its sitting in a box in my garage right now along side with a special 460 in a box. I've been doing some 660 tests lately. I'll fit the 461 in tonight or tomorrow night and get it shipped out asap. the 460 will hopefully get tested on tuesday.
Mastermind
Work Saw Specialist
I'd do all three exactly the same Chad. I've done over 50 of these 261s......and have tested every combination of numbers you can imagine. This is as good as it gets.
Dieselshawn
ArboristSite Operative
Mastermind
Work Saw Specialist
Trooph
