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Motorized Electric Bicycles The motorized electric bicycle is a quiet and efficient form of transportation for general commuting.

Need alot of help and advice


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Electric Bicycles forum. Deacon--Loving the welding practice.Haven't been this busy since the barn fire. The bro. and I did break down and buy ...
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Old 04-26-2009, 01:57 PM
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Default Re: Need alot of help and advice

Deacon--Loving the welding practice.Haven't been this busy since the barn fire.
The bro. and I did break down and buy a welding video and it has helped the learning curve a great deal.
My brother likes to point out that it has helped me more since I'm learning curve challenged.
Has anybody come up with a way to put an independent rear suspention on a trike bike?
Still looking at this as the way to go for me since I'm a flea market hound and want some way of carrying the loot home.
Trying to do something while I wait for Pops bikes.Still I think it will have to be in trike form or a side car set up.
The really tough part is that every wheel/axle has to have a brake to pass here in BC.
That makes Pops a brave man in my books to go against the crap they put in your way.Putting it to the politicos is a favorite pastime of mine but to make a living working within the frame work is tough.
Glad your pusher is doing so well.Who would have thought moving the wheel would make that much difference.Guess if you settle for good enough you never discover great.
Steve.
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Old 04-26-2009, 02:57 PM
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Default Re: Need alot of help and advice

i live in upstate ny and i have a gas engine$185 on my bike,i used to have a elctric bike from walmart$175 but the batteries ran dead after 50-60 recharges.
unless youre handy and know what youre doing go with a store bought electric scooter or bike $150-380.
if youre going with 24volts you need 2 batteries
and match all your voltage stuff the same and dont forget the charger.
have fun making the brackets and sprocket and chain and stuff.
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Old 04-26-2009, 05:12 PM
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Default Re: Need alot of help and advice

Quote:
Originally Posted by fasteddy View Post
Deacon--Loving the welding practice.Haven't been this busy since the barn fire.
The bro. and I did break down and buy a welding video and it has helped the learning curve a great deal.
My brother likes to point out that it has helped me more since I'm learning curve challenged.
Has anybody come up with a way to put an independent rear suspention on a trike bike?
Still looking at this as the way to go for me since I'm a flea market hound and want some way of carrying the loot home.
Trying to do something while I wait for Pops bikes.Still I think it will have to be in trike form or a side car set up.
The really tough part is that every wheel/axle has to have a brake to pass here in BC.
That makes Pops a brave man in my books to go against the crap they put in your way.Putting it to the politicos is a favorite pastime of mine but to make a living working within the frame work is tough.
Glad your pusher is doing so well.Who would have thought moving the wheel would make that much difference.Guess if you settle for good enough you never discover great.
Steve.

Steve

Thanks alot for the compliment.

It's all uphill here with the MAN but I'll geter done...POPS
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Old 04-27-2009, 06:41 PM
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Default Re: Need alot of help and advice

Bought an ezip bike, the new 09 model...It's sooo heavy and feels so slow even when I got it going on the highest gear on a leveled road...ran out of power after about 15 miles with its 20 pound battery...

gonna return it and just build my own little by little...
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Old 04-27-2009, 08:18 PM
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Default Re: Need alot of help and advice

anything you build with sla batteries is going to be that heavy. no other part of the bike is heavier than normal. the motor is maybe five or so pounds everything else is light. So anything you build with less weight will have to be with a lithium poly battery.

Also any motor is going to be at least as heavy as the one on the zipper. most e bikes seem slow because they generally are. Fifteen miles was pretty good on the 10ah batteries that come with those bikes. It's all a trade off really.
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Old 04-27-2009, 09:13 PM
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Default Re: Need alot of help and advice

Yeh, what Deacon said. That's about right for what you got, which is real similar to what I'm running and, yes they are a bit slow. Mine tops out at 20 mph on the flats with pedal assist. Pass that and the motor won't turn on. Albeit slow, it does wonders for those hills that usually kill me and for me, that's good enough.
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Old 04-27-2009, 09:55 PM
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Default Re: Need alot of help and advice

the problem is that the thing is so heavy that when i felt like not using the motor it made it really difficult to pedal for some reason....thinking that if I make something with a really light frame, hub motor, lithium or better batteries that it might weigh less.
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Old 04-27-2009, 10:57 PM
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Default Re: Need alot of help and advice

It would weigh less with lithium poly batteries for sure. the hub motor itself is heavy. You also need a good stout frame for it as well. there is a lot of torgue they say with them.
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Old 04-27-2009, 11:17 PM
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Default Re: Need alot of help and advice

15miles is good i only got 5 miles with the electric one i had.
i had the walmart mongoose 24v 300w 2-7ah batts 18"frt 16"rear 12-15mph max.
the bike was to short and heavy to peddal. my battery pack was the heavyest thing on it,next was the motor,without them i could pick the bike up with 2 fingers.
the batteries were bad after a few months and 300 miles on bike.
i tossed the parts(motor/controller/throttle/wheels/batterypack/charger) in a parts box for a later project.

Last edited by Cabinfever1977 : 04-27-2009 at 11:20 PM.
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Old 04-27-2009, 11:50 PM
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Default Re: Need alot of help and advice

Quote:
Originally Posted by cris11368 View Post
the problem is that the thing is so heavy that when i felt like not using the motor it made it really difficult to pedal for some reason....thinking that if I make something with a really light frame, hub motor, lithium or better batteries that it might weigh less.
When you lift the rear wheel off the ground, does it freespin? Is the wheel centered in the frame? Any of the brake pads dragging on the rims, front or back? Is your seat height adjusted properly so you get more leg extension when pushing down on the pedals or are you scrunched up and pedaling like you're on a kids tricycle? These things can attribute to hard pedaling.

If the wheel doesn't freespin as it should and the brakes are fine and the wheel is centered and not rubbing on the frame, it could be your freewheel is binding somehow or for some reason it's also turning your motor. If it's one of these problems, call the mfr or retailer. The rear wheel should freespin.

I have no problems with pedaling my bike, but it's difficult to push backwards as the freewheel spins freely only in one direction. Pushing backwards turns the motor and the gearing makes it that much more difficult.

As for the weight, I noticed that they mount that batt pack kinda high on the rear rack. I use a nylon pannier and it holds the pack way lower which also lowers the center of gravity making the bike a lot more stable. When I first rode my bike, which then had the pack mounted on top of the rear rack, I found it really squirrely to ride and it was difficult to hold a straight line. Since dropping it down, it rides almost like a regular bike. Very stable with much more control and less "wandering".
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