Who will be the 1st to run Dual MY1020's?

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Postby Mathurin » Sun Feb 25, 2007 4:01 pm

That Moots Snoots is built for the Iditasport, it's a human-powered winter journey tracing Alaska's Iditarod Trail. It's a 1840km race/survival challenge event, support is limited to boxes of food and clothing sent to checkpoints prior to the start. Being self-reliant is critical, and it's the reason for things like the front gear cluster. The thermos, forks and downtube are designed to carry fuel on this bike. I suppose you could use them to carry coffee, though. But I like that the Moots weighs next to nothing, being made of titanium. For myself, a cro-mo Pugsley is more realistic.

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You have to know, not fear, that someday you are going to die. Until you know that and embrace that, you are useless. - Tyler Durden, Fight club. Ditch the fake identity you've created for yourself, walk your own way in a society of mindless drones to become real, you are not your social status.
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Postby Toorbough ULL-Zeveigh » Mon Feb 26, 2007 8:59 am

safe wrote:
Toorbough ULL-Zeveigh wrote:I thought there were safety hazards to motorizing both wheels without some kind of closed loop feedback to monitor wheelslip or some such.


I was thinking of a "Twin" motor configuration so that the motors were physically connected before the chain going to the rear wheel. The advantage is that you can find motors that run at lower rpms and that makes gearing easier.

But the idea of "Twin" Hub motors is good too.

Any time you can get the "Efficiency Peak" and the "Power Peak" to be the same (which means a pretty low current limit on the controller) then that "spreads the joy" of improved efficiency across the entire powerband.

It's better to have two hub motors running at half the amps than one hub motor that is overamped. It's just overall BETTER.... (there is NEVER a case when overamping bets oversizing... oversizing always wins)

But the added weight might be annoying... however, if you got two small, light weight and high efficiency hub motors that might be really good... (it would even improve the weight issues that people have with these 5304's that weigh in at 25 lbs)





My apologies. It's because of where my mind's been at recently that I jumped to the conclusion that this was an AWD thread.

Rather than go back & delete my previous posting, I'll just attach this & live with the shame & humiliation of my mistake.
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the pessimist engineer sees a glass that’s twice as big as it needs to be.
the optimist engineer sees that the glass has a 100% safety tolerance.
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Postby BiGH » Sun Oct 28, 2007 3:30 am

lol i think its a spacing thing? maybe they only could get rear rims that thick with the rear hub installed?

either way that would be a cool bike to econvert :P with dual motors using slick baloon tyres!
Bike / Motor: Electric specalized rock hopper with Crystalyte 504 / 26"
Batt: Yesa 72v (36v*2) (getting 6.7ah) LiFEPO4 in a Topeak bag. OR 1x eMTB 48v 20ah pack (straps to frame) -depending on range requirements.
Controller: Unmodified 48a digital with 4110 Fets
Current Prob: Bike is in parts getting painted / drying / testing replacement BMS
Trail of Dead Parts:Avanti Frame, 408 motor *melted*, 35a controller - i broke by trying to mod it 2nd controller - blew it up.
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