treemonkey stuff

[tree monkey]

exhaust gasket?

i glue the gasket to the shield, so it is in there

 

[Hinerman]

did anyone see what i forgot to do in part 9? lol

Did you take the rope out?

 

[singinwoodwackr]

Did you take the rope out?

Yea, saw that.
Heck, I even rewound the thing trying to catch whatever he did, lol.
I got zip

 

[ZERO]

did anyone see what i forgot to do in part 9? lol

Scott,

You forgot to feed the shop stove, temps dipped below your liking.

Wisconsin fall showed its true colors.

 

[Fabulous]

 

[Fabulous]

The above animation gives a nice view of how the stratos engines operate. Though a Husqvarna is shown I am certain the STIHL version operates similarly

 

[Fabulous]

My question to you Mr. Treemonkey (and hope you ate your wheaties this morning) based on your experience, is this: when we lower the cylinder with a base cut (take “x” amount) viewed from when the piston fires and is on its downward trajectory, aren’t we then changing the timing of the stratos cycle slightly ? In other words the piston cutout is uncovering the port later thus altering the time for the air charge to fill the cylinder and ultimately the fresh charge to come up from the crankcase and “push” the pillow of air out and then fill with mix. I would have to run calculations but it seems it wood change the timing. Most likely won’t make a lick of difference but ….. your thoughts/ experiences on this. I included the animation as trying to explain can get confusing. Thanks in advance for your input !

 

[bwalker]

My question to you Mr. Treemonkey (and hope you ate your wheaties this morning) based on your experience, is this: when we lower the cylinder with a base cut (take “x” amount) viewed from when the piston fires and is on its downward trajectory, aren’t we then changing the timing of the stratos cycle slightly ? In other words the piston cutout is uncovering the port later thus altering the time for the air charge to fill the cylinder and ultimately the fresh charge to come up from the crankcase and “push” the pillow of air out and then fill with mix. I would have to run calculations but it seems it wood change the timing. Most likely won’t make a lick of difference but ….. your thoughts/ experiences on this. I included the animation as trying to explain can get confusing. Thanks in advance for your input !

Of course it changes the timing if the strato cycle. The intake is moved lower and the strato cutouts in the piston stay the same.

 

[Fabulous]

Obviously, …. my question (addressed to Mr Treemonkey btw) was what effect , if any , would this have on the saws performance. Just curious to see what someone who has vast knowledge and experience concerning the subject has to say. If I knew how much was taken off the base or what the new squish measurement was I might be able to calculate to the nearest .0001 of a sec the new values - might not make a lick of difference at 10000 rpm

 

[tree monkey]

My question to you Mr. Treemonkey (and hope you ate your wheaties this morning) based on your experience, is this: when we lower the cylinder with a base cut (take “x” amount) viewed from when the piston fires and is on its downward trajectory, aren’t we then changing the timing of the stratos cycle slightly ? In other words the piston cutout is uncovering the port later thus altering the time for the air charge to fill the cylinder and ultimately the fresh charge to come up from the crankcase and “push” the pillow of air out and then fill with mix. I would have to run calculations but it seems it wood change the timing. Most likely won’t make a lick of difference but ….. your thoughts/ experiences on this. I included the animation as trying to explain can get confusing. Thanks in advance for your input !

yes the stratto port timing changes the same as the intake port timing changes. i consider it all intake as some of the fresh air mixes with the air/fuel charge late in the it the transfer process

 

[tree monkey]

Obviously, …. my question (addressed to Mr Treemonkey btw) was what effect , if any , would this have on the saws performance. Just curious to see what someone who has vast knowledge and experience concerning the subject has to say. If I knew how much was taken off the base or what the new squish measurement was I might be able to calculate to the nearest .0001 of a sec the new values - might not make a lick of difference at 10000 rpm

around 6deg in port open duration