What do they say? "Different strokes for different folks", kind of applies unusually well here
Yeah, I guess I'm weird. I prefer the 2 stroke sound on a aerobatic bird. To me, the 4-stroke is annoying with all the constant throttle adjustments. Makes me uneasy as it seems the pilot is having trouble with control.
ORIGINAL: Constrictor
ORIGINAL: Airjunky
I don't care about price. I'll fly what is best for any particular application. With that being said, I'll never fly a 4-Stroke on a .40 sized profile for a couple of reasons.
Price is the biggest consideration for many people in deciding on 2 or 4 strokes.
The first and biggest reason is one that's already been brought up, throttle response. I've seen a lot of 4-stroke profiles fly and every time the pilot is having to constantly work the throttle up and down to try and maintain a steady hover/torque roll, usually to no avail. It wears me out just WATCHING![/quote]
4 strokes have MUCH better throttle response. My YS's rock with a few clicks on the stick. Also the 4 stroke is muuuuuuuuuuch less annoying when your hovering right in your face, 2 strokes have a horrible whine when close in, and when flying many 2 strokes make the entire airframe rattle like a rattlesnake trapped in a snare drum.
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There's just no way that an engine firing on every other revolution can ever have the throttle response of an engine that fires on every revolution. Add the extra weight and drag of the larger 4-stroke propeller and the spool up/down response time is much greater. What has better throttle response, your 2-stroke weedeater or your 4-stroke lawnmower?[/quote]
If you compare weights of the same displacement, 4 strokes are ALWAYS lighter. Dont ask me why they can make a 4 stroke lighter than a 2 stroke but they do. Now to get one with the same power as a 2 stroke you may have to buy an engine that weighs 1-2 oz more than a 2 stroke and it almost all cases when you size up like that you get MORE power than a 2 stroke.........sweeeeeeeeeeeeeeeeeeet!
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The other reason is weight. I've talked to many a 4-stroke enthusiast about this and the first thing they tell you is the Saito only weighs a couple ounces more. What they don't take into consideration is the weight of the whole power package and including the prop the package weighs several ounces more. Weight is critical......[/quote]
Weight can be very important, 4 strokes aren't for every application thats for sure.
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Most people are used to 4 lb plus airplanes and have never flown a 3.5 lb airplane. Fly a 3.5 lb airplane with a 2-stroke engine for a few flights, then try and go back to that 4.5 lb 4-stroke lead balloon you've been flying. You'll put it up for sale so fast, your head'll spin.[&o][/quote]
Light is good, no arguement!
My airoplane toolbox has an increasing pile of good used 2 strokes in it. I am converting to all 4 strokes
Nothing against 2 strokes, they work well but the 4 strokes are just the shizzle
........yeah, yeah.........your's flys great........I'm serious, fly a 3.5 lb plane and your opinion will change dramatically!
Rob
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