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dissecting an earthquake chainsaw

Discussion in 'Chainsaw' started by o8f150, Nov 20, 2012.

  1. leecopland

    leecopland Addicted to ArboristSite

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    At the Home Depot Canada we have the ryobi ry3714 this year 37cc as well as the older 46cc unit. Echos of course too.
     
  2. Chris-PA

    Chris-PA Where the Wild Things Are

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    That looks just like the 46cc Homeli/Ryobi/Techtronic saws sold here, maybe just bored out a bit. They are not Zenoah. I've never had one, but I believe they are clamshells with cat mufflers, might have quad open transfers.
     
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  3. TheBrushSlasher

    TheBrushSlasher I have chainsaws and chainsaw accessories.

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    @nenicu do you come across any Zomax saws in your area?

    Zomax is making there own saws that are stratocharged and other designs.
    zomax_chain_saw_zm5600_chain_saw_pole_chainsaws_china_gasoline_chainsaws.jpg
     
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  4. Conquistador3

    Conquistador3 Le Comte de Frou Frou

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    Thanks. So no rebranded Echo's for us. :laugh:
     
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  5. nenicu

    nenicu ArboristSite Operative

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    It's not strato, is krankcase intake with reed valve just like some small italian McCullochs[33 cc ?].
     
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  6. nenicu

    nenicu ArboristSite Operative

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    The fuel /air mix enters in the crankcase when the piston is on the way up. On the way down the reed closes and the mix goes up the transfer tunnel. This set up is on some chinese mini bikes an two stroke atv.Same system on two stroke gennies.[ crankcase intake].
     
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  7. nenicu

    nenicu ArboristSite Operative

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    Funny thing the crankcase seems like a modified Zenoah G 450.
     
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  8. TheBrushSlasher

    TheBrushSlasher I have chainsaws and chainsaw accessories.

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    Here's what the saw looks like.
    [​IMG]

    They have stratocharged saws to that got epa and carb approval they were also at a few u.s. equipment shows so they are testing the waters here.
     
  9. nenicu

    nenicu ArboristSite Operative

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    Zomax ZM 5600. Looks like a modified Zenoah. They have a Husqvarna 570 clone[strato].
     
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  10. nenicu

    nenicu ArboristSite Operative

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    Look for McCulloch PM 374 euromac. Crankcase intake with reeds.
     
  11. Conquistador3

    Conquistador3 Le Comte de Frou Frou

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    The Zomax I've seen here in Europe were painted Husqvarna orange. Pretty expensive by all standards: the 5410 is well over €200 and the chain brake handle feels like will snap at first opportunity.
    Honestly I think they are no improvement over the usual Zenoah "derivatives".
     
  12. Chris-PA

    Chris-PA Where the Wild Things Are

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    It does look like it's based on the Zenoah chassis. I've often wondered if a reed valve design would make more sense in regard to meeting emissions standards. The non-strato saws that meet emissions rules often have a very short exhaust duration and restrictive muffler, so they don't rev anyway. It seems like a reed valve design would have beeter intake control and more power at lower rpm. But no one is doing that.
     
  13. Ozhoo

    Ozhoo Addicted to ArboristSite

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  14. TheBrushSlasher

    TheBrushSlasher I have chainsaws and chainsaw accessories.

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    Was over on O…..P……E forum reading about the changes poulan is getting. Redmax is getting snuck into the mcculloch brand internationally with their cs35.

    IPL, MCCULLOCH, CS35, 967624614, ...
     
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  15. Chris-PA

    Chris-PA Where the Wild Things Are

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    It's Zenoah in a round about way - that's the Jenn Feng McCulloch XM40 design, with a GZ4000 type cylinder stuck on a G3200-based chassis, but with the strato ports blocked off. Those have been sold as McCulloch for some time really.

    Still, I guess now that Husqvarna owns both Jenn Feng and Zenoah it's distinction without much difference.
     
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  16. linksys

    linksys New Member

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  17. nenicu

    nenicu ArboristSite Operative

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    My Earthquake chainsaw
     

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  18. nenicu

    nenicu ArboristSite Operative

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    The crankshaft looks like crap. Even one Taiwan made for the strato clones[ Jenn Feng] put next to it looks first class. The flywheel side is 12 mm and clutch side 15 mm. Looks made from left Redmax g3800 part and right Redmax g5000 part. Weird combo. The bearings also left g3800 and right g5000.
     
  19. TheBrushSlasher

    TheBrushSlasher I have chainsaws and chainsaw accessories.

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  20. nenicu

    nenicu ArboristSite Operative

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    Yes. The counter weights are crap from casting[ forging].
     

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