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New 550xp mark II

Discussion in 'Chainsaw' started by hqv, Jan 17, 2019.

  1. hqv

    hqv ArboristSite Operative

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    Here is stream from presentation live.



    Cylinder volume: 50.1 cm3
    Power: 3.0 kW
    Weight without cutting equipment: 5.3 kg (5.5 kg for XPG)
    Chain speed @ 133%: 26.1 m / s.

    X-Torq
    AT like in 572xp so new generation

    1547741666_550xp_mark_ii.jpg 1547741933_horizontal_felling_sight.jpg 1547742267_exploded_view_550xp_mark_ii.jpg 1547742354_easy_access_to_autotune.jpg 1547742374_front_view.jpg 1547742375_insulated_wall_mark_ii.jpg 1547742376_robust_muffler.jpg
     
  2. foeke

    foeke ArboristSite Operative

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    Bit more power, bit more weight. Bit industrial looking design. The proof of the pudding is in the eating.

    Verstuurd vanaf mijn SM-G955F met Tapatalk
     
  3. cus_deluxe

    cus_deluxe Thats what she said.

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    Love the new air filter!
     
  4. Andyshine77

    Andyshine77 Addicted to ArboristSite

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    Sure looks like a step in the right direction.
     
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  5. Eskimo

    Eskimo ArboristSite Lurker

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  6. hqv

    hqv ArboristSite Operative

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  7. Stonesforbrains

    Stonesforbrains ArboristSite Operative

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    Wonder why they used a dry lumber fake tree instead of making the test video with a real green tree in the woods? Really weird video, seeing a guy running a saw with full PPE in a parking lot or truck offloading lot. I guess it’s all how you want to stage the promo video. Seems really odd.
     
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  8. r black

    r black ArboristSite Guru

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    very nice
     
  9. Andyshine77

    Andyshine77 Addicted to ArboristSite

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    It's set up similar to the Timber sport competitions they have in Europe.
     
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  10. Stonesforbrains

    Stonesforbrains ArboristSite Operative

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    That explains it, enough said.

    Thank you
     
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  11. sunfish

    sunfish Fish Head

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    I like it.
     
  12. ammoaddict

    ammoaddict Addicted to ArboristSite

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    Are they going to keep making the 550xp and the Mark 2 or is it going to replace it. For me, the current 550, at almost a pound lighter would better suit my needs.

    Sent from my Moto G (4) using Tapatalk
     
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  13. Andyshine77

    Andyshine77 Addicted to ArboristSite

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    The original 550 is being replaced with the Mark II. The same thing is being done with the 562.

    I'm not crazy about the weight gain either, but certain aspects of the original design gave a lot of people, a lot of grief. Although much of that was just quality control problems, a new design won't fix QC issues. If the added weight gain translates into greatly increase durability, most will be okay with the weight gain. The issue is competition is tight and the Stihl 261 has been a durable saw, yet the version 2 is a little lighter than the first version of the 550. I think the saw will sell well nevertheless.
     
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  14. MountainHigh

    MountainHigh Selective Tree whacker

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    New 550xp @ 5.3 kg / 11.69 lbs :(
    Heavier than the 261 c-m @ 4.9kg / 10.8 lbs

    And the new 550xp is now only about a pound lighter than my 562xp.
    Might as well throw a 16" bar on my 562xp for the small stuff.

    Looks like some nice improvements, but Stihl now has the edge in weight - unless I'm missing something - Husky seems to have given up the lightweight advantage not only in this 50cc saw, but also in the new Stihl 462 cm at 70cc's weighing in only slightly more than the Husky 562xp 60cc saw. What`s up Husky? Wondering if the 562xp will be heavier also - if so, might as well buy a 70cc 462 c-m, pricey, but another 10cc`s more grunt for near the same weight.

    -
     
  15. Allar

    Allar ArboristSite Member

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    So this shows that they messed up with the 550xp and 545, or else they wouldn't make a completely new saw to replace them.
     
  16. Husky Man

    Husky Man Addicted to ArboristSite

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    Not necessarily, all too often change is made simply for the sake of change


    Doug :cheers:
     
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  17. Andyshine77

    Andyshine77 Addicted to ArboristSite

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    IMHO the 550, 545, 550 and 562 were not thoroughly tested designs that were rushed out the door. Something internally also occurred within Husqvarna to cause such a decline in quality control, and at a very critical time too. I personally consider them all failures. This is not to say they haven't paved the way for the new models, and when running right they're actually super nice saws to run.
     
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  18. ammoaddict

    ammoaddict Addicted to ArboristSite

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    I totally agree.

    Sent from my Moto G (4) using Tapatalk
     
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  19. SmellyPirateHooker

    SmellyPirateHooker ArboristSite Guru

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    It's a screamer! Really digging that filter setup
     
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  20. MountainHigh

    MountainHigh Selective Tree whacker

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    SNIP ...>

    "Improvements for endurance

    For the purpose of endurance in tough conditions, the cooling capacity of the Husqvarna 550 XP® Mark II and Husqvarna 545 Mark II has been improved by 13 %, compared to the previous generation of 50cc chainsaws from Husqvarna. This is made possible by three key improvements: 1) an optimized airflow, [I cut the hole in the case on my 562] 2) the addition of more cooling fins in critical areas that contribute to more effective cylinder heat dissipation,[Guessing this is where some more weight is coming in] 3) an insulating heat shield, specifically developed for the new chainsaws, which provide sealing against the cylinder area and minimizes heat leakage. [an aluminum tape firewall works on my 562] This helps keep the carburetor compartment cool to improve startability in hot conditions. In addition, a completely new muffler keeps temperatures down [I just drilled more holes in my 562 muffler and that works].

    For further endurance, the 50cc chainsaws have a new air filter design [this looks good]. The new design comes from the combination of a redesigned air filter with higher capacity and improved sealing and an upgrade of the Air Injection™. This, in turn means the saws are equipped with a new optimized version of AutoTune™, Husqvarna’s ignition module software and carburetor calibration."


    <... END SNIP

    I couldn't hear/see the video at the top of this page very well, so without all the finer details on this "new build", it doesn't look all that much different to me, so far. The "Endurance improvements" are mostly cosmetic except for the extra cooling fins and "optimized autotune".

    Update >I cranked volume on video up to max and heard:

    - New Crankshaft
    - New Piston
    - Improved Air Filtration
    - Re-worked air nozzle?
    - Cooling air channel through crankcase
    - "Reduced temperature will make the product more durable"
    - Cylinder Base gasket redesign to reduce heat transfer
    - Ceramic sleeves embedded in crankcase
    - increased power output
    - longer lasting external cosmetics
    - main bearings update
    - crank and cylinder updates
    - new carb
    - increased sprocket size
    - optimized bar
    - more torque
    - power increase
    - 30% faster acceleration than original 550xp :surprised3:
    - 14% longer run time - improved fuel efficiency
    (I'll stay a little skeptical on some of these stats for now)

    They've obviously heard loud and clear about the past issues and are addressing them. Hot starts, reliability, bog issues etc. Their marketing is definitely focused on re-building confidence. Also claiming best in class, and it will help you make $money :D :innocent:

    New weight of the 550xp seems to be similar to Dolmar 5105 / 50cc @5.4 kg (11.9 lbs) :dumb:

    My guess is the new 550xp MK II is going to have to noticeably outperform the old model, and feel closer to my 562xp, or they will lose out to the lighter 2nd gen 261 c-m


    .
     

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