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Cool Site
- Thread starter LINEAWEAVER
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Looks pretty impressive to me, nice one LINEAWEAVER.
brookester
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Actually, the 7 cylinder radial engine the original Harley V-twin was based on is naturally balanced similar to the opposing cylinders of the BMW twin. It's just when you remove the other 5 cylinders, it becomes a very unbalanced engine. Why Harley didn't adopt a more balanced configuration early-on like other V-twin makers is a bit of a mystery. I don't know for sure, but I think Harley did away with the one piece rod and single journal then put an angle in the rod journals with the Evolution engine. I think the Honda Transalp engine is the most interesting. It uses an odd combination of cylinder and rod journal angles to achieve the most balancable V-twin engine. That's Honda for you.
Excellent article and very interesting. Thanks for that.
- Craig
Excellent article and very interesting. Thanks for that.
- Craig
What a superb site.
I'm too lazy to do the math(s) even if I was capable of it (which I doubt) - am I correct in infering that a circular primary force (blue) means that it can be cancelled out completely using counterweights?
If so it makes the 90deg config of the Ducati seem like the way to go. Yes the Transalp is clever and give a nice compact engine, but the additional complication of a non-0-deg crank angle is a big price to pay IMO.
The Suzuki TL engine stuck to the 90deg/0deg config which gave rather a long engine front-back, which is (I believe) the main reason they ended up with a rotary shock (no room for a conventional shock).
Also makes the design of the original 916 etc. all the more impressive IMO, I guess the Desmo setup is more compact and allows a shorter engine?
Sorry this is getting a bit off-Husaberg-topic - but Dale started it ;-) - and it is v.interesting ;-) ;-)
Cheers
Jerry
I'm too lazy to do the math(s) even if I was capable of it (which I doubt) - am I correct in infering that a circular primary force (blue) means that it can be cancelled out completely using counterweights?
If so it makes the 90deg config of the Ducati seem like the way to go. Yes the Transalp is clever and give a nice compact engine, but the additional complication of a non-0-deg crank angle is a big price to pay IMO.
The Suzuki TL engine stuck to the 90deg/0deg config which gave rather a long engine front-back, which is (I believe) the main reason they ended up with a rotary shock (no room for a conventional shock).
Also makes the design of the original 916 etc. all the more impressive IMO, I guess the Desmo setup is more compact and allows a shorter engine?
Sorry this is getting a bit off-Husaberg-topic - but Dale started it ;-) - and it is v.interesting ;-) ;-)
Cheers
Jerry
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