Direct Drive Alternator

[101mpg]

Not sure if this should go in this forum or FE, but here goes.

I have looked at all the alternative alternators, and wonder why this one hasn't been tried: a direct-drive alternator.

Things I've rejected: solar array (expensive and not efficient), fuse disconnect (not good at speed or distance), belt removal (must stop vehicle, dirty, etc.), propellor driven (not good at low speed or low airflow - think grill blocks), peltier replacement (not efficient enough, weight), and a few others.

Here's the basic concept: 1) Make sure to have a gearing system that will run the alternator in the correct direction, 2) basically this runs off the crank just like a regular alternator, but will be able to be pulled away to turn it off. Instead of the metal pulleys, rubber-coated wheel on the outside of the alternator pulley, crank pulley would have a rubber-coated area on it for contact as well. 3) Likely using a different than factory alternator as the vehicle (going to be a CRX) will be using LEDs, everything I can do to keep electrical usage down, etc. so I will try to use a smaller (and thus lighter) alternator to save weight, which may be offset by the engaging mechanism. Overall, the concept should result in FE increases.

When alternator power is needed (and it is from time to time) - a mechanical switch can be actuated (likely a cable) which will pivot the alternator down such that its rubber-coated pulley (think how thin serpentine belts are - wouldn't have to be TOO thick) contacts the drive surface on the crank. Must have a method of coating replacement. (Extra tight teeny belt forced over pulley?)

The way in which riding mowers engage the blade is a similar type of system with a belt or two - but same basic concept - get rid of the drag of the alternator when it's not needed.

Similarly, this COULD be used for the air conditioner clutch pulley as well I am thinking - may have a secondary drive to effect either of these (yes, some of us DO want to use an A/C during the year - think a drive through Texas or California, etc. and we just don't want to roll the windows down when it's 110 degrees out. FE and heavy sweat don't mix well for some of us.

I realize I will likely be relocating the alternator in order to make this work, but it seems pretty doable.

Direct drive and/or additional belt linkage like on a lawnmower could really help this out I think. Am I off base here? Suggestions?

I look forward to your comments.