Hey Harkin...
It really depends on what your riding - local trails and jump stuff = smaller frame / more open DH stuff = larger. Generally the larger a bike the better it is at speed but less agile it will be. Ive never owned a voltage but did own a gambler which had a very similar sizing figures in the geo
The only difference between the 2 sizes is reach.. like the gambler
http://dfp2hfrf3mn0u.cloudfront.net/188 ... inal_1.jpg379mm on the small and 404mm on the large.
if you compare that to other brands you will see that 390-405 is a standard for a medium bikes reach
Transition tr450 medium - 398mm
Santa cruz V10 medium - 389-401mm
Trek Session - 390mm
So the large voltage is like a largish medium which at 5"11 is probably about right. I also picked up this from a vital review
http://www.vitalmtb.com/product/feature ... e-Bike,107Quote:
I was testing a large frame and found it incredibly easy to maneuver. Considering it was a "long" size frame and the fact that Iām 5ā10āā tall, the sizing of the bike did feel a bit small. I would have felt cramped on a "short" size. Consider this when purchasing a Voltage frame or complete bike.
Again ive only ever done carpark riding on voltages so im purely working off the figures, and experience with the gambler.