Green Machine wrote:...
I think: 1. speed 2. range 3. price are the 3 most important factors on an ebike followed by another big 3 : 1. reliability 2. aesthetics 3. Noise level (stealthiness)
Hillhater wrote:Toorbough ULL-Zeveigh wrote:*not* if the race is strictly uphill with no or at least very little variation in slope which is the case here.
the multiple geared bike isn't gonna shift anyways.
those extra unused gears are nothing but dead weight.
you bet the lighter weight fixie's gonna win that race to the top.
FYI... on the PP run, the Opti's speed ranged from 14mph to 25 mph most of the time, but with periods over 30 mph and peak of 42mph.
That is a big range to cover EFFICIENTLY with only one gear.
A derailleur set, weighs what ?..1 lb ?
my money would be on the geared bike ! ... by a long way !
GrayKard wrote:Green Machine wrote:I think i will get an opportunity to test ride this new optibike..and at that point i would like to continue my review. Because i think this new optibike is a "dream bike" even to a very skeptical and smart ES crowd.
You've shown a few times that you haven't a clue what ESers want in an ebike. So I'll go out on a limb and would say given the choice that most here would choose a Stealth bike over an Opti. Although I might choose the Opti if they throw in turn signal and brake lights.
neptronix wrote:Next year i want to do this. I live very close to pike's peak now, about 5 miles away. I want to make optibike cry. Any suggestions on what hub motor setup to use? am currently thinking 5305 or so...
I think a hub is kinda the wrong path for this. Or, if you were to choose a hub, a magic pipe laced into the smallest diameter rim possible would be the best option.
This isn't a sprint, so thermal mass doesn't help you a bit, you need your heat production to match the rate of heat removal. Super heavily drilled vented Magic Pie, internal controller gutted and replaced with some internal cooling fans, and an 18fet controller turned down to maybe 50 battery amps on a 24s pack would be a very strong attempt at the peak if you wanted to go hub.
I smoked my X5 in 10mins of road racing, and it was well vented. You need something with a good design for this rather than something that relies on being a big pig boat anchor to survive bursts of high power.
gensem wrote:If im not mistake regen ll generate more heat inside the hub, and if you dont trust that your disk pads ll last just add rim brakes too.
neptronix wrote:Imagine going down a 15%-7% grade on a bicycle for extended periods of time...
gensem wrote:Is the Fusin much dif than a MAC?
The major design flaw in geared motors a year ago were weak gears that would strip very easily.
Lets pretend you ll be using 88v 20a in each hub, at that power level its nearly impossible to overheat the mac if you doing 20mph and up.
Users browsing this forum: No registered users and 11 guests