ms 462 finds is way to tree monkeys bench

[crabby cooter]

the fresh air is trapped in the transfers, the longer the transfers the more that is trapped and the cleaner it runs, too much air and you can't get enough fuel in the cylinder. the fresh charge in the case is richer then a normal saw and mixes with the fresh fuel in the cylinder.
the big problem with this whole mess is the fresh charge still enters the cylinder while the exhaust port is still open. not a lot saved but some.
for the most part all it does is dilute the exhaust with some fresh air. makes it pass epa regs

 

[Frank Rizzo]

for the most part all it does is dilute the exhaust with some fresh air. makes it pass epa regs

Yah ... and by virtue of its design woodnt you lose some of the “cooling effect” of the fuel over the piston ? Also woodnt there be (by same line of thinking) temperatures fluctuations as a byproduct of this ? At 12000 rpm the piston is cycling 200 times a sec and the computer is adj 33 times sec ... so by that measure at 12000 rpm you could have 6 cycles of “lean” before the canned ham adjusts to baseline ... then when it senses “rich” it takes another 6 cycles (at 12000 rpm) to “lean “ it out ... rinse and repeat ... imho the cumulative lean/rich dance causes wear much quicker than in a conventional “old school “ design where you lose some fresh charge out the exhaust but with a proper tune you can STIHL make good power without the wear and tear ... any thoughts on this hypothesis ?

 

[crabby cooter]

I haven't see any of those type of problems yet

 

[Frank Rizzo]

I haven't see any of those type of problems yet

 

[crabby cooter]

this is a list of changes made and how they affected the saw

 

[edisto]

View attachment 688059

this is a list of changes made and how they affected the saw

Is that last one sub 40?

 

[crabby cooter]

http://************/attachments/20181201_095821-jpg.152779/

making a new cant, used up the first one. put it in my heated shop to keep it as consistent as possible.

 

[crabby cooter]

Is that last one sub 40?

38.6

 

[edisto]

38.6

Nice!

It's great to see a deliberate, experimental process.

Do you use aftermarket pistons to save cost when dialing in the port timings, or are you filing on OEM pistons?

 

[crabby cooter]

oem pistons

 

[edisto]

oem pistons

Ouch!

I guess with the side window on these pistons, you pretty much have to.

And, now that I stop to think about it (a rare occurrence)...if the saw isn't widely available yet, I'm betting OEM is the only option.

I'm glad I prefer older saws...

 

[crabby cooter]

the cant is made up of 12 ties, the last I sold ties I got $28.50 each for them. cant value is $342.oo. this is the second cant for this saw.
I get paid $350.oo to port a saw.

a lot of people get pissed that I don't share my numbers. well I paid for those numbers.

 

[crabby cooter]

air filter after 2 plus tanks

 

[Canyon Angler]

air filter after 2 plus tanks

Looks like a felt cover over that air filter would help a lot, as it does with the HD2...easier to clean without blowing big holes in the filter paper with compressed air...

 

[redbull660]

we finished the new cant over the weekend! Here are some pics I snapped with my phone machine.


- scott (crabby cooter aka tree monkey) skidding logs out
- redbull cut em all down with tm661
- scott setting up log to mill
- scott on the log truck saturday. dude is crazy good with that thing!

 

[chipper1]

we finished the new cant over the weekend! Here are some pics I snapped with my phone machine.


- scott (crabby cooter aka tree monkey) skidding logs out
- redbull cut em all down with tm661
- scott setting up log to mill
- scott on the log truck saturday. dude is crazy good with that thing!

Good stuff Julian.
Scott too.

 

[Iceboy]

we finished the new cant over the weekend! Here are some pics I snapped with my phone machine.


- scott (crabby cooter aka tree monkey) skidding logs out
- redbull cut em all down with tm661
- scott setting up log to mill
- scott on the log truck saturday. dude is crazy good with that thing!

Great work guys.!!!

Στάλθηκε από το LG-H818 μου χρησιμοποιώντας Tapatalk

 

[crabby cooter]

cant's are ready. will be testing in big and small cant's

 

[crabby cooter]

 

[huskihl]

View attachment 688421

View attachment 688422

View attachment 688423

2 in the pink and one in the stink?