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What is the advantage of a rear-mounted engine?

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  #21  
Old 06-25-2004, 06:15 AM
Andy Bassham's Avatar
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Default What is the advantage of a rear-mounted engine?

Ha haha! Not bad. Then you can see the homage to Arctic Cat (or at least that the majority of pictures are of the old 500). Good research though. My claim to fame is that there is someplace that sells gorilla axles and they use a picture of my old 500 on their website.
 
  #22  
Old 06-25-2004, 11:55 AM
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Default What is the advantage of a rear-mounted engine?

The 250/300's are very stable and climb great, the main reason is their center of gravity is verry low, and the suspension has a low roll center, the low roll center makes them super stable on cornering. The point Andy is trying to make is that the cg is also very far back, look at it from an engineering point of view with some vectors and you'll understand why it's not optimum for steep hills. If they made a 300 in the same chassis with the engine and tranny forward it would be more stable on reall steep slopes. Why do the bigger ones feel more tippy on steep slopes then? Look at the vectors again, the cg is higher and more forward in the larger machines but when you put it on a steep hill the vector will be going to the same point, or farther back on the ground than the 300's, add on to that that your on a taller machine that it's harder to position yourself farther forward on and you'll end up less stable. The 300's are going to be the most stable, then the ACT quads, then the big IRS machines.The best hill climbing machine would be a rear wheel drive machine with high power and a low cg, add a transferable weight to that that shifts the cg as the angle of the hill increases to keep the cg on the leading edge of the tire contact patch and wow. If your setup with the cg positioned so that it is right when the machine is at about 85 percent up the climb you'll do really well also.

As for a 300 out pulling all stock machines, no way. It will outpull the machines in it's class easily because it's so heavy and has low gearing, and will drag around some of the larger displacement but lighter quads. It wont' pull an ac 400 or 500 around or a grizzly,and it definatly won't pull a sportsman around.
 
  #23  
Old 07-03-2004, 10:56 PM
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Default What is the advantage of a rear-mounted engine?

Physics also say bumblebees should't be able to fly also, but they do anyway.

¢¢

peace
scaboy
 
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