i am considering the Megatron from Rambo,and the duel 750 from hardcore bikes
Ok, I'll try. First, both of those bikes are out my league for price point and amount of power. I try not to comment on specific models unless I have first-hand experience with that bike or one of my real life buddies does (eg. I've seen him riding it). Before going into the two bikes, some useful reference points:
750w is about 1 horsepower: That is a lot of power for a bike, more than the best tour de france rider can sustain. A horse can carry you and your gear up the hill for the day, and you, your gear and the kill back down.
Power consumption: A good quality name brand cell battery is about 48V 14Amp hours for an effective 667 Watt-hours. That means it can drive a single 750 watt motor at full power for a bit less than an hour, maybe 40-50 minutes, depending on how new the battery is and how edgy the controller is.
Muddy/snowy hill climbing isn't about having off the charts gobs of power: like off-roading in a 4x4, it's about putting it in L1 and keeping the rig moving and wheels turning and don't high-side it.
On to the bikes:
rambobikes megatron:
likes: Two 48v17Ah name cell batteries, no bullshit about milking a single battery, much prefer mainstream batteries that stay under the 60V high voltage threshold.
4.8" tires, and 77lb. I can lift 77lb onto a rack or up onto the bed of a pickup (though be fucking careful about weight limits if you're planning on putting this on an external vehicle rack)
good brakes
dislikes:
They don't tell you whether the hub drives are geared hubs or direct drive. Judging by the form factor I will assume they are geared hubs.
They don't list weight limits on any of the rack accessories. They do list 300lb overall on the bike, so I guess it's a trailer for the kill.
At that price point $7k they should have a built-in compressor to re-inflate the tires after a mud climb. (I kid, you can get an electric pump for $50 in the aftermarket)
The paint job will attract attention around town.
No rear suspension.
On the no-gears thing, there are plusses and minuses. This "bike" is intended to be throttled around, with maybe some token pedaling on the flat. They don't mention any pedal cadence sensor. OTOH, no derailleur(s) means less stuff to maintain and less s*it that can break in the field.
hardcorebikes hec-dual750:
likes:
built in headlight/taillight
triangle battery is easy to upgrade
you can ride that down the street without turning heads, except for the usual fat tire thing
dislikes:
They don't tell you whether the hub drives are geared hubs or direct drive. Judging by the form factor I will assume they are geared hubs.
single battery for two motors. 60v x 18Ah is 1080 watts.
don't like going above 48v in battery reference voltage. Going above that puts you in kind of experimental territory, though the industry may standardize on something in the next few years. The catch is that batteries that charge to over 60v are "high voltage", and that is a more expensive regulatory regime.
Three chain rings??? More than one chain ring on any ebike besides one that is emulating a high-end road bike is like putting tits on a donkey.
Pretty clearly I'm not very fond of either bike, especially at the prices. If I wanted a hunting bike I would start with something like the bolton bronco plus a trailer, and look for reasons to go to a higher price than that. Burley (among others) makes good trailers.
