variable valve timing.... - Page 2 - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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Other Motorcycles Forum for you to discuss anything about any other motorcycles. Good place for former (and soon to be) V-Strom owners to keep on the site even though they are without a strom.

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  #11  
Old 12-14-2012, 02:10 PM
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Join Date: Mar 2012
Location: Deltona, FL
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Quote:
Originally Posted by Scott E. Bonds View Post
Maybe its the cave man in me but I would rather go back to carbs on bikes. Maybe a 1 bit cpu for the spark plugs...but points would be ok too. No fuel pump, just mount the tank higher than the carbs and she should be just fine. Kick starter for sure, and if the whole electrical system shits it would still run for quite some time.

I would leave my GPS at home and just use maps as I reflect about the good old days.

Bet I would get home every friggin time.

I bet you really do not care about my feelings on more electrical crap for bikes.
One of the reasons I still have my '75 RD350. Dead simple and darn near bulletproof.
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  #12  
Old 12-16-2012, 01:56 PM
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Join Date: Aug 2007
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The variable valve timing (one or both valves) can have a significant effect on emissions, as well as tractability. Seems like Honda went through quite a number of iterations, originally using electro-hydraulic actuation of more radical cam lobes/followers. I think most of the current methods use variable timing (usually hydraulic) on drive pulleys/sprockets to achieve more continuous variation. As to the question of locking in the timing at the radical setting, there's a pretty good chance the engine would barely idle, and would certainly pollute like crazy. Oh, and the mileage would really suck, something quite a few people are concerned about. I remember the bad old days of carbs and fixed valve timing on car engines. Put in a radical cam to generate big torque/HP numbers at high revs, and the thing would barely idle, be a bear to start, and make very little torque off idle. In those days getting one HP per cubic inch was the sign of a temperamental, tightly wound engine. Nowadays that's a standard engine, with tightly tuned engines (like 600 sport bikes) getting around 3 HP per cubic inch. Probably couldn't do that without all the electronic tweaks. I still like riding my old R80RT (only engine electronics are ignition) But the power output is uninspiring.
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