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Old 09-07-2008, 06:16 PM   #11 (permalink)
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Check out what Bombardier Ski Doo is doing with their 600cc snowmachine (mobile for you slow folk) motor. The average for it is 17mpg, compared to previous gen 2-stroke that was at best 9-10mpg.

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Old 09-07-2008, 07:37 PM   #12 (permalink)
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Quote:
Originally Posted by almightybmw View Post
Check out what Bombardier Ski Doo is doing with their 600cc snowmachine (mobile for you slow folk) motor. The average for it is 17mpg, compared to previous gen 2-stroke that was at best 9-10mpg.
How does it compare in weight and acceleration?
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Old 09-07-2008, 07:45 PM   #13 (permalink)
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Has Orbital done anything since 2003?
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Old 09-08-2008, 01:09 AM   #14 (permalink)
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my truck could be considered 2stroke. It smokes like one on start up, and heavy acceleration. and burns 5qts of oil to 45 gal of gas
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Old 09-08-2008, 10:21 AM   #15 (permalink)
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Quote:
Originally Posted by SuperTrooper View Post
How does it compare in weight and acceleration?
I just went to the website andl ski-doo is claiming better mileage with the 2 strokes than competitors 4 strokes. Everyones major complaint about the 4 strokes is that they are heavier than the 2 stroke motors. This weight is up front and an extra 20-30lbs on a 450-500lb machine in the wrong spot is very noticable in performance.
I didn't reseach the exact number but a 600cc 2 stroke probably puts out around 100hp, a 600cc 4 stroke puts out 75-80hp. Doesn't sound like a big deal but for most sledders performance trumps FE by quite a bit. There would be lots of guys happy with 5 mpg if it meant they could beat their buddies across the lake everytime....
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Old 09-08-2008, 01:50 PM   #16 (permalink)
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I doubt it, but by 2011 the EPA is requiring cats on all lawn equipment and such.
do you have anything to back this up?
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Old 09-08-2008, 02:01 PM   #17 (permalink)
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2011 EPA lawnmower catalytic - Google Search
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Old 09-08-2008, 02:10 PM   #18 (permalink)
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I don't believe the EPA can get catalytic converters on lawn equipment.
No one is going to pay $500 USD for a No-Name WallyWorld lawn-mower that you can get today for the rollback price of just $98.77 USD.
Ain't Happenin
Besides, cats are heavy, where would you mount it? How would you secure it from those night time cat thieves?
Just my $.02
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edit;
I already use an electric mower.
Perhaps this will spur the sale of more electrics so they (the gassers) don't have to be strangled with a catalytic concerter.
Hmm
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Last edited by metroschultz; 09-08-2008 at 02:16 PM.. Reason: second thought
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Old 09-08-2008, 02:15 PM   #19 (permalink)
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thank you.
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Old 09-08-2008, 05:52 PM   #20 (permalink)
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Quote:
Originally Posted by metroschultz View Post
I don't believe the EPA can get catalytic converters on lawn equipment.
No one is going to pay $500 USD for a No-Name WallyWorld lawn-mower that you can get today for the rollback price of just $98.77 USD.
Ain't Happenin
Besides, cats are heavy, where would you mount it? How would you secure it from those night time cat thieves?
Just my $.02
S.
edit;
I already use an electric mower.
Perhaps this will spur the sale of more electrics so they (the gassers) don't have to be strangled with a catalytic concerter.
Hmm
I guess cat technology has been brought forward quite a bit lately, many homeowner level chainsaws have had cats on them for a couple years. I have one and the little epa sticker rates it 2 out of 10 (1 is best) on their pollution scale. The muffler/cat is slightly bigger than a regular muffler and gets a bit hotter. It did clean up the exhaust noticably compared to my pro saw. The emmissions system also had a time rating of 50 hours and I'm probably at 60 and it is failing rapidly. The saw seems to be losing power so I thinking of just drilling a couple of 3/8 holes through the whole thing to open it up and see if the lost horsepower is from the cat being clogged.

I've been told there are a few nasty metals/chemicals in the cat itself so I should be careful about the dust from drilling.

I'd like to see an analysis of which is worse, releasing a few litres of unburnt fuel with out a cat, or dealing with nasty compounds in a throw away item?
I guess I could price out a new cat/muffler, I imagine they make it just enough to justify buying a new saw...
Ian

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