Has anyone used Vacume operated Fuel Pumps

I havn't had any pump issues but if I do I'd rather have a vacume operated since there's no fire hazzard,+ low cost and cheap to rebuild. Anyone have any input, they use them on some bikes, carts, aircraft, etc?

Mikuni High Volume Fuel Pump

 

If you already know the following, forgive the dissertation, please. "Vacuum operated" fuel pump is a bit of a misnomer. A more accurate statement would be "pressure pulse operated". All mechanical fuel pumps of this nature use a diaphragm that relies on a pulse of low pressure, and then a pulse of high pressure, relatively speaking. It is the difference in the pressure pulses that mechanically push/pull the diaphragm back and forth and cause it to draw fuel in through one check valve and expel it through another. Typically the source of vacuum is the crankcase, as the pressure pulses tend to be strong. V twins, with pistons rising and falling nearly at the same time, produce a lot of pressure differential, as does a single cylinder engine. I have no idea if the VFR V4 will produce pressure pulses strong enough, or long enough in duration, to operate a fuel pump diaphragm. Although an individual intake port might be a good source of alternating pressure pulses, they may also be too weak.

Just my two cents.

PS I like your "Location"...