Magnumitis
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Inevitably
Any Interest In Revisiting Porting The 550XP?
- Thread starter Mastermind
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Inevitably
Mastermind
Work Saw Specialist
Fuel valve test...
Data accumulation.....
Interestingly, this saw has idled for 36.5% of the time it has been running.
This engine had a small air leak at the intake.......comparing this one to another carb shows the max fuel settings to be much higher on this one than on a saw with no leaks. This one was around 600 RPM slower on max RPM in last run data too. The Autotune system overly enriches the A/F mixture to prevent engine damage is a air leak is detected......pretty slick if you ask me.
Master reset.....
After the air leak is repaired then it's a simple matter of resetting the system to factory default.
Data accumulation.....
Interestingly, this saw has idled for 36.5% of the time it has been running.
This engine had a small air leak at the intake.......comparing this one to another carb shows the max fuel settings to be much higher on this one than on a saw with no leaks. This one was around 600 RPM slower on max RPM in last run data too. The Autotune system overly enriches the A/F mixture to prevent engine damage is a air leak is detected......pretty slick if you ask me.
Master reset.....
After the air leak is repaired then it's a simple matter of resetting the system to factory default.
Mastermind
Work Saw Specialist
Looks that way:msp_sleep:
But you can always use it to poke the steam holes in pie crust:hungry:
Mastermind
Work Saw Specialist
zogger
Tree Freak
Interesting that one out of three had an air leak and those are all fairly new saws. Shouldn't be any air leaks. Wonder how many other 550s are out there with running issues because of that. Unless that 1/3rd random sample is way skewed by some odd chaotic random chance event, that seems high to me. And with the autotune compensating, there could be a lot of guys running slightly defective saws at reduced power because of it, and not even know they have an air leak issue, if this is common.
Let alone dealers who still don't have the gear and training to analyse the saws, let alone individual owners.
I think husky is dropping the cheap-out ball. They should provide a data cable and DVD with every saw. IMO, the owner has a right to know what the heck is going on with their saw, to at least some normal reasonable extent, without having to schlep it to a dealer or to someone who afforded the $$$ to purchase their IP precious.
Or something, heck, anyone can go into wallyworld and score an OBD reader cheap for their ride and at least get some clue as an owner about repairs/error codes, etc.
Maybe some startup might come up with an aftermarket reader that would work on both autotune and mtronic. Niche product now, but with most likely most small engines headed this way..hmmm
Let alone dealers who still don't have the gear and training to analyse the saws, let alone individual owners.
I think husky is dropping the cheap-out ball. They should provide a data cable and DVD with every saw. IMO, the owner has a right to know what the heck is going on with their saw, to at least some normal reasonable extent, without having to schlep it to a dealer or to someone who afforded the $$$ to purchase their IP precious.
Or something, heck, anyone can go into wallyworld and score an OBD reader cheap for their ride and at least get some clue as an owner about repairs/error codes, etc.
Maybe some startup might come up with an aftermarket reader that would work on both autotune and mtronic. Niche product now, but with most likely most small engines headed this way..hmmm
Magnumitis
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Many of us are already carrying the aftermarket reader, we just need the app:msp_thumbup:
Mastermind
Work Saw Specialist
I've done 14 - 15 550s so far.......of all those, we have seen one with an air leak from the factory. It was simply an assembly error that caused the intake boot to be rolled inward. I've seen more 372XTs that had assembly errors at the intake by far.
RiverRocket
ArboristSite Guru
Everything looks like it is easy to get to on the 550....wide open, not many tight spots...?Some before and afters.......
Quick question about your tools...I just ordered a cc Specialties TX Motor(One direction) and now i'm second guessing myself...Should i call them and tell them i want the SR motor(Reversible)? I know i can put the bits in ether side of the 182, but is it a PITA to switch from one side to the other? I see you have two right angles....I really don't wanna buy another 182...$$$$$$$$
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Mastermind
Work Saw Specialist
It's tough to tighten an bit that's larger than the hole in the center of the holding tool CC sends with the handpiece. I made a tool just for that.....
LegDeLimber
Addicted to ArboristSite
Assuming a reasonably clean saw to start with.
*Roughly* how long does it take to hook up and read the data
once you've become familiar with the procedure?
I'm hoping to see someone make a simple "T" into the data line
and record some running data.
stick the laptop in a backpack and go work 'er a bit.
I've expressed my concerns/dislikes elsewhere over the start counter
lack of a user reset kit..yada yada...
But as long as it's there, then let's see how we can play with it, right??
edit: could be some extra fun if you had that real time readout
while on the chadihman dyno.
introduce a leak , partial block air intake etc while running.
*Roughly* how long does it take to hook up and read the data
once you've become familiar with the procedure?
I'm hoping to see someone make a simple "T" into the data line
and record some running data.
stick the laptop in a backpack and go work 'er a bit.
I've expressed my concerns/dislikes elsewhere over the start counter
lack of a user reset kit..yada yada...
But as long as it's there, then let's see how we can play with it, right??
edit: could be some extra fun if you had that real time readout
while on the chadihman dyno.
introduce a leak , partial block air intake etc while running.
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Mastermind
Work Saw Specialist
It's made to read data while the saw is not running.
LegDeLimber
Addicted to ArboristSite
ah, just a detail my Good Man.
and the code jockeys/hardware hackers have Officially been challenged !!
(that pesky market segment size thing again)
Buss pirate or somesuch data sniffer anyone? ( i'm not up to date on the tools)
anyone else here read Hackaday com ?
Mastermind
Work Saw Specialist
zogger
Tree Freak
"Unless that 1/3rd random sample is way skewed by some odd chaotic random chance event, that seems high to me"
Note what I actually said, not what you want to attribute to me. Even one in 16 is too high for a pro expensive unit.
My local shop has only sold a few saws so far with autotune, and already had one whopper of a quality control issue, connecting rod failure, engine totalled.
If this is truly an odd chance, so be it, I see no proof either way, way too small a sample set here, and the 550 as opposed to say the 562 has had issues that have been reported. And, because the autotune may "hide" and compensate for things like air leaks, I will stick by my thoughts that there might be a lot more out there with issues, but the owners AND the shops are unaware of it, because the saw is still running, just not optimally. But we don't know, the owners don't know, saw is still running, shop doesn't know, saw is still running..so it wouldn't show up in any statistics..yet. And the owners surely won't know until such a time as a big failure occurs, as the way to actually test it is out of their hands for the most part with out expensive hoop jumping.
I am IN FAVOR of autotune and mtronic, I am NOT in favor of how the corporations have gone about rolling it out and attempting to perpetuate the "black box" aspect of their precious. It sucked when the car companies pulled that crap, and it sucks with the saw companies.
Sucks. Picayune cheap policy, with absolutely no need for it. There is no actual valid reason in year 2013 with ubiquitous cheap computerized everything why the owner can't easily access some simple basic info with an included two buck cable and a one dollar stamped DVD. Now, if that would lead them to check out their saw, then take it to the shop for repairs or owner usable easy to swap over the counter parts etc (completely hypothetical example after plugging it in "air cleaner excessively dirty, replace") if the diagnostics suggested that, swell. Better to fix little things in advance, yes?
I hope this makes my viewpoint clearer.
I will ask the owners here, NOT the dealers and builders, just individual saw owners/operators:
Would YOU have preferred to have a data cable and access software for analysis included with your saw purchase, as part of a normal toolset, such as the included scrench? Given that a data cable really does only cost around two bucks (plenty of examples of other cheap datacables out there like with cellphones) and that once a master is made a stamped DVD is actually less than a dollar in cost, do you think it would have been better to have a set included with your expensive saw purchase, or do you think you are just too stupid to be able to plug in a cable and spin up a disc on your home computer, and it is much better and more convenient to have to tote it in to the dealer so he can mumble something about some expensive parts, mysterious scary computerized stuff, and bench time at 50-80 an hour, plus driving back and forth to a shop most likely twice?
Which do you non shop owners prefer?
Really, that is my point in a nutshell right up there, this condescending attitude from corporate that people are incapable of doing simple tasks and they need to squeeze every possible nickle out of a sale, even if it shafts the consumer.
Majorpayne
ArboristSite Operative
tl;dr
SierraWoodsman
ArboristSite Guru
Mastermind
Work Saw Specialist
Same here.......I'm right tickled with those saws.
BTW there is more than just a data cable to the diagnostic unit......I don't know what the box does, but there is one between the saw and the 'puter.
