Fingers and Bridge ports

[Backyard Lumberjack]

yep! no doubt in my mind... that is why I followed you over here Mr. MM!

as an fyi - worked part of the afternoon today on my 044 porting job...and it echos much of the tech and information in one of your how-to's that certainly was interesting, helpful and informative to me... real happy with the results so far, and kept noted boundaries inline per your cautionary guidelines... when I was done with today's work... I was a bit apprehensice... did I get the port too wide by chance and over into the ring gap line? but, happily - no!

room to spare... but not two rooms!! lol...

"let's build some chain saws!!"

044 porting work today, Mr. MM influenced! first cuts... work in progress...

 

[Jughead]

yep! no doubt in my mind... that is why I followed you over here Mr. MM!

as an fyi - worked all afternoon today on my 044 porting job...and it echos much of the tech and information in one of your how-to's that certainly was interesting, helpful and informative to me... real happy with the results so far, and kept noted boundaries inline per your cautionary guidelines... when I was done with today's work... I was a bit apprehensice... did I get the port too wide by chance and over into the ring gap line? but, happily - no!

room to spare... but not two rooms!! lol...

"let's build some chain saws!!"

Willing to learn here.it'll be a slow process due to work.

 

[bikemike]

you mean like this? its my SuperFlow SF 1200! spark any ideas of interest perhaps?... in case you are wondering... its a $15,000.00 flow bench... pulls 85 amps on start up... and uses 15 maybe its 18... 220 volt motors to do it's thing... runs both analog and digital systems... can plot and graph before an after mods, its a carb builder's flow bench, top of the line... few yrs back, mint condition...


View attachment 9832

That's 1 spendy vacuum cleaner. What cfm can that machine pull?

 

[Backyard Lumberjack]

That's 1 spendy vacuum cleaner. What cfm can that machine pull?

1200 cfm!

 

[bikemike]

1200 cfm!

Yeah that's pulling more than most drivable muscle cars

 

[Backyard Lumberjack]

Yeah that's pulling more than most drivable muscle cars

lol! I wasn't joking... it really does pull 85 amps on start up... you hard wire it straight into the panel box!! and u don't use regular Romex!!!

 

[bikemike]

lol! I wasn't joking... it really does pull 85 amps on start up... you hard wire it straight into the panel box!! and u don't use regular Romex!!!

I could be portable if it were powered by a ported saw engine and gear induction

 

[Backyard Lumberjack]

It could be portable if it were powered by a ported saw engine and gear induction

maybe the ported saw... lol

 

[leadfarmer]

Pretty soon I'm gona be a fart smel..... I mean a smart fellow . I really like this new site guys. This sure is interesting . Keep up the good post guys

 

[tickbitintn]

Who all could make it to southeast Missouri this spring?

I'm not far enough away to miss something like this on any date... you can count me in for sure.

 

[tickbitintn]

Hey Backyard ... pics look good . that thing should be a runner....

 

[Deets066]

So.....

You've got these fingers. Long shallow grooves with little cross sectional area that should work like squirt guns before the mains open.

If youve got a high intake, How many degrees for blowdown can you get away with and still get positive flow?

Im thinking it should be more than 2* advanced over the mains myself.

Mine are 3* before mains Al

 

[Deets066]

Count me in for the party! @jmssaws

 

[Backyard Lumberjack]

Hey Backyard ... pics look good . that thing should be a runner....

tryin'...

let's hope so...

its a two stage project. this one is to get it running again. with moderate mods that just cannot be ignored... then do a carb rework... and then a BB kit... all parts in house.

just a hot rod saw project, don't have to do anything to justify its keep other than run, and run good! lol...

thanks!

 

[Backyard Lumberjack]

Willing to learn here. it'll be a slow process due to work.

that is the right attitude. but u can be sure, it will be a slow process in any event... so much to know and understand... have to know the theories!! goal is to accomplish the work, competently... and no scrap cylinders sitting on the bench....

read, read... and read some more. when u r not reading... study! you have to know the theory, the things not to do, and the things to be aware of. lots of info online, here, etc... hunger and passion is a suitable driving force... coupled with a keen motivation... imo, all else is just the luck of the draw!

I don't think you can port effectively 2-stroke chain saw engines, if you do not know the theory and principles of design and function ~

 

[tickbitintn]

Even after all that..... Each saw (brand, series, model... Etc) does not respond exactly the same to the same mods or "numbers".... There are also different ways (or styles) of building them to reach their potential..... Always a lot to be learned by a beginner, novice or even an experienced saw Porter!!


Sent from my XT1254 using Tapatalk

 

[Stihl working Hard]

View attachment 9711 these gigantic fingers are in the best running cylinder I've done.

Really nice job on the jug

 

[Stihl working Hard]

that is the right attitude. but u can be sure, it will be a slow process in any event... so much to know and understand... have to know the theories!! goal is to accomplish the work, competently... and no scrap cylinders sitting on the bench....

read, read... and read some more. when u r not reading... study! you have to know the theory, the things not to do, and the things to be aware of. lots of info online, here, etc... hunger and passion is a suitable driving force... coupled with a keen motivation... imo, all else is just the luck of the draw!

I don't think you can port effectively 2-stroke chain saw engines, if you do not know the theory and principles of design and function ~

Knowledge is a sign of strength when you are still learning I learn something new Everyday on this site

 

[Stihl working Hard]

044 porting work today, Mr. MM influenced! first cuts... work in progress...

View attachment 9840

View attachment 9841

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View attachment 9843

Looks great awesome pics

 

[Stihl working Hard]

Even after all that..... Each saw (brand, series, model... Etc) does not respond exactly the same to the same mods or "numbers".... There are also different ways (or styles) of building them to reach their potential..... Always a lot to be learned by a beginner, novice or even an experienced saw Porter!!


Sent from my XT1254 using Tapatalk

Couldn't agree more well said