Any Interest In Revisiting Porting The 550XP?

Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Sir Yes Sir

Then velocity was important to the engineers when the "over all" concept was designed...
Interesting...
I would like to be a fly on the wall when them egg heads are coming up with these things...
Though it may be of no use, since I don't speak Swedish...


Carry on...
 
Then velocity was important to the engineers when the "over all" concept was designed...
Interesting...
I would like to be a fly on the wall when them egg heads are coming up with these things...
Though it may be of no use, since I don't speak Swedish...


Carry on...

Maybe a Swedish fly.
 
Couple of clearance issues......

A shave here.



Trim about .050 here where the intake contacts the carb box floor.

 
I was was under the impression that any baffle removal produced no noticeable gains compared to just doubling the outlet hole area on the 550?

I've never made any comparisons.......where did that idea come from?

I see Brad removed his post.......
 
I starting to wish I had never started this thread.

Randy,
You have a strong following here that appreciates your work and threads. Personally, they are what I look forward to the most in the Chainsaw section of AS. They certainly are the most educational, technical, informative threads on AS- No one can argue that.:msp_wink: I sincerely hope you continue to do the build threads. Even though they sometimes draw scrutiny or nay-sayers, they have brought you alot of business over the years, and alot of respect from members here. Use me for an example- without your build threads.... I would have never heard of you. After reviewing a build thread, I emailed you regarding porting my Echo cs520 (as my first ported saw). We had 47 emails sent back and forth between us on that build (I still have them)....... and it wasn't until the build thread of that saw that I made my first post on AS. That was Jan 2012. With my Husq 2100 sitting in your shop..... you've done 14 saws for me since then, and I have bought saws from you as well. Without your threads- that wouldn't have happened. Almost two years later, I have a builder I believe in and can trust, and I have a dear friend out of it that Im gonna stick with.

Keep doing the threads...... we have new members that are just like I was. Threads help you more than they hurt you.:rock: To steal a line from one of my favorite movies- The Patriot "Stay the course!"

:cheers: I don't post in all your threads bc I dont have much to add that contributes... but I read and follow them all. Hell, if you look back on your videos and then look at the saws in my sig...... I've bought based on the past threads and videos other than my Sachs Dolmar 120si.
 
Last edited:
I was was under the impression that any baffle removal produced no noticeable gains compared to just doubling the outlet hole area on the 550?

I've never made any comparisons.......where did that idea come from?

I see Brad removed his post.......

Someone said that lately, but I don't remember where, or who it was......
 
Defending why I do things the way I do is just getting old. I've done several of these saws, and I've tried more blowdown, less blowdown, more outlet, less outlet, carb mods, timing advances, even retarding the timing.

This is the best setup I've found.

Brad, How many 550s have you done now?
 
Defending why I do things the way I do is just getting old. I've done several of these saws, and I've tried more blowdown, less blowdown, more outlet, less outlet, carb mods, timing advances, even retarding the timing.

This is the best setup I've found.

Brad, How many 550s have you done now?

One Randy. That's why I cordially asked your opinion. All I was looking for was the answer you just now gave:msp_confused: Thanks for the answer. That's all I wanted, a straight answer, not a defense.
 
Randy, I may not say much on these, but after a certain 6900 page thread, yours are my favourites.
Sure they often end in a pissing match, but they are always entertaining, and I ALWAYS learn something.
If not for you, I wouldnt be trying to learn porting for myself.... Keep doing these Randy!
I will try and get one of your saws one of these days...
 
One Randy. That's why I cordially asked your opinion. All I was looking for was the answer you just now gave:msp_confused: Thanks for the answer. That's all I wanted, a straight answer, not a defense.

Well in the past I've never, ever, not one single time, been able to make a point that you understood.......I'm tired of trying.

Understand?
 
Take the high road fellers and "Stay the course".:msp_thumbup: Hate to see this go south before we get to see videos. :bang:
 
Well in the past I've never, ever, not one single time, been able to make a point that you understood.......I'm tired of trying.

Understand?

No, not at all. I asked if you had tried less blowdown. Instead of saying, "yes, it didn't work for me", you got upset that I even asked, eveidentally thinking I was criticising your work. Not that case at all. It was a straight up honest question, nothing more. You're reading into this what isn't there. This need not have happened.
 
Back
Top