564xp jug review

[redneckhillbilly]

do you think by keeping the plating short of the top of the cylinder could be a backdoor way to come into compliance with an emmisions law? maybe EU of origin? could the big manufacturers be quietly complianing and blaming higher emission outputs on saw builders?

so by making it harder to modify and get it to fail sooner if modified they side step people being able to modiify them. and give the illusion of compying to a higher standard of emission regulation?

or is this just another fail in quality control following the usual pattern everytime it seems like husqvarna releases a new series of saw? i guess time will tell.

 

[srcarr52]

do you think by keeping the plating short of the top of the cylinder could be a backdoor way to come into compliance with an emmisions law? maybe EU of origin? could the big manufacturers be quietly complianing and blaming higher emission outputs on saw builders?

so by making it harder to modify and get it to fail sooner if modified they side step people being able to modiify them. and give the illusion of compying to a higher standard of emission regulation?

or is this just another fail in quality control following the usual pattern everytime it seems like husqvarna releases a new series of saw? i guess time will tell.

You're reading way too far into this.

The step is there to make it easier manufacture a consistent bore. The more you can hang the stones over the edge the easier it is to get a correct top diameter without taking too much from the rest of the bore. Also stone life is increased as you don't have to have a perfect corner on them to achieve a straight bore.

 

[redneckhillbilly]

that makes sense, conspiracy theory side of me seems like it would be a means to stop/deter from modification that could be seen as side stepping emission regulations.

im only speaking from a pure speculation standpoint.

 

[Stump Shot]

that makes sense, conspiracy theory side of me seems like it would be a means to stop/deter from modification that could be seen as side stepping emission regulations.

im only speaking from a pure speculation standpoint.

Check your windings for possible over tension. Lol
Manufacturer found a short cut and exploited it.

 

[bwalker]

do you think by keeping the plating short of the top of the cylinder could be a backdoor way to come into compliance with an emmisions law? maybe EU of origin? could the big manufacturers be quietly complianing and blaming higher emission outputs on saw builders?

so by making it harder to modify and get it to fail sooner if modified they side step people being able to modiify them. and give the illusion of compying to a higher standard of emission regulation?

or is this just another fail in quality control following the usual pattern everytime it seems like husqvarna releases a new series of saw? i guess time will tell.

If the area with no plating is larger than the cylinder bore it would increase emmisions.

 

[Stump Shot]

Was working on a brand new 550XP cylinder today and happened to notice a very similar thing. With an angled mechanics pick I can feel it drop down/in where the plating quits, yes quits, I was able to scratch it with the pick, so no plating there.
Seems to be a pattern here...
I didn't drop the cylinder a lot and am not worried about it hanging up, as it won't get anywhere near there, but I will be keeping my eyes open on all future 5 series cylinders.
Now I wonder if this is something new or something that went unnoticed. It's been a spell since I have done a 550.

 

[Woodpecker]

My 543 was made in Japan.

So are both of mine.

 

[Junk Meister]

that makes sense, conspiracy theory side of me seems like it would be a means to stop/deter from modification that could be seen as side stepping emission regulations.

im only speaking from a pure speculation standpoint.

(Humor) Might have turned out different if It was PLATED in the DARK of the MOON.

 

[srcarr52]

Was working on a brand new 550XP cylinder today and happened to notice a very similar thing. With an angled mechanics pick I can feel it drop down/in where the plating quits, yes quits, I was able to scratch it with the pick, so no plating there.
Seems to be a pattern here...
I didn't drop the cylinder a lot and am not worried about it hanging up, as it won't get anywhere near there, but I will be keeping my eyes open on all future 5 series cylinders.
Now I wonder if this is something new or something that went unnoticed. It's been a spell since I have done a 550.

View attachment 490507

Steps like this have always been there. They are plated but it's raw so you are able to scratch the coarse surface layer a tiny bit.

 

[Stump Shot]

Steps like this have always been there. They are plated but it's raw so you are able to scratch the coarse surface layer a tiny bit.

Which begs the question to the world, what's the big hairy deal about it now?

I want to say that I seem to recall something about this, but it seems pretty vague to me. At any rate wasn't an issue for me then, isn't one now and until something changes in the future, will go back to not worrying about it until then. I suspect though that adding peaking at it to the SOP would be prudent.

 

[legdelimber]

shades of the era of single pointing threads in a blind hole, on engine lathes.

Sean brings up a good point!

The groove was helpful for letting a boring bar not be as likely to push up a "bug"on the tip and scar the bore at the end.

You're reading way too far into this.

The step is there to make it easier manufacture a consistent bore. The more you can hang the stones over the edge the easier it is to get a correct top diameter without taking too much from the rest of the bore. Also stone life is increased as you don't have to have a perfect corner on them to achieve a straight bore.

 

[srcarr52]

shades of the era of single pointing threads in a blind hole, on engine lathes.

Sean brings up a good point!

The groove was helpful for letting a boring bar not be as likely to push up a "bug"on the tip and scar the bore at the end.

Manually threading to a step is always nerve-racking. Cutting a relief groove to stop in does make it easier on the operator and tooling.

 

[MG2186]

Been putting mine through its paces, I ported and machined it, hasn’t hung a ring yet for some reason. Not nearly as impressive as the YouTube cookie making videos then all the intelligent answers to follow. Dam fine saw to operate. Biggest issue has been the air filter in this dead hard ash. I fixed that with an oiled foam pre filter around the stick filer, grease the seal area and it’s all good.

 

[huskihl]

.040” from the band. Plating definitely goes all the way up the wall and onto the band as it’s hard to cut through towards the outer edge. First pass I usually take .002–.003” just so I can cut the plating right in the corner, but on these I end up taking .010”’ off just so I can get through the thinner plating towards the combustion chamber easier



I have a few more of these to get through this week. This is the one I did today for @bradb123






Run good

 

[jurchybald]

I can see you raised exhaust alot. There's no lip left. you keep bd same as stock?

 

[huskihl]

I can see you raised exhaust alot. There's no lip left. you keep bd same as stock?

Within a degree or so

 

[huskihl]

I can see you raised exhaust alot. There's no lip left. you keep bd same as stock?

Didn’t raise the exhaust all that much. I removed about half of the lip. It’s just a different shape now

 

[jurchybald]

I raise exhaust back to stock number after machine work. Leave transfers untouched. Big hole under stock deflector and that's it. Solid gains. Very easy saw to work on.

 

[huskihl]

I raise exhaust back to stock number after machine work. Leave transfers untouched. Big hole under stock deflector and that's it. Solid gains. Very easy saw to work on.

Try lowering the intake floor 5°

 

[MG2186]

Try lowering the intake floor 5°

You lowered it 5 more after machine work?
Did you find more than the 18% gain you were looking for? It sounds good and peppy!