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Old 07-31-2011, 03:49 PM   #31
Luke OP
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Originally Posted by TEZZA View Post
Hi , this is a great build . I don't know much about electic motors , is it possable to put a recharging system on to get more milage while riding .It looks like you have some spare room to add on .
Thanks Tezza
Yes. Since the motor is permanent magnet, it generates power when spun. It's really hard to push the bike backwards because of this. Pushing the bike forward is a little bit harder than pushing a gas bike that's in neutral. Pushing it backwards feels like it's in a foot of mud because the controller conducts the motor current.

Some controllers support regenerative braking. When you use it, you get what feels like engine braking and it puts a little charge back in the batteries. The Alltrax controller doesn't support it, though. I'm a bit skeptical that it will help much, so it's a little ways down on the list of things to try.
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Old 08-01-2011, 12:57 AM   #32
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Originally Posted by Luke View Post
Yes. Since the motor is permanent magnet, it generates power when spun. It's really hard to push the bike backwards because of this. Pushing the bike forward is a little bit harder than pushing a gas bike that's in neutral. Pushing it backwards feels like it's in a foot of mud because the controller conducts the motor current.

Some controllers support regenerative braking. When you use it, you get what feels like engine braking and it puts a little charge back in the batteries. The Alltrax controller doesn't support it, though. I'm a bit skeptical that it will help much, so it's a little ways down on the list of things to try.
What about reversing the poles with a set of contacts for, well, reverse? That engine braking works great for other applications.

How far down the list is the 2 wheel drive version
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Old 08-01-2011, 02:04 AM   #33
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Charging

Why don't you use a alternator to charge the batteries , this is a simple system maybe????????????
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Old 08-01-2011, 09:46 AM   #34
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So...

So this is why I haven't seen much from Luke lately.
This is full of awesomesauce!
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Old 08-01-2011, 03:20 PM   #35
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why don't you use a alternator to charge the batteries , this is a simple system maybe????????????
Tezza
tanstaafl
http://en.wikipedia.org/wiki/Second_...thermodynamics
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Grider Pirate screwed with this post 08-01-2011 at 03:25 PM
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Old 08-01-2011, 05:37 PM   #36
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Thanks for the link...my head just exploded.
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Old 08-01-2011, 07:09 PM   #37
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Originally Posted by Luke View Post

Some controllers support regenerative braking. When you use it, you get what feels like engine braking and it puts a little charge back in the batteries. The Alltrax controller doesn't support it, though. I'm a bit skeptical that it will help much, so it's a little ways down on the list of things to try.
It may not help much, but what about the pure advantage of having "engine braking"? no need to ride the brakes the whole time during long descents.
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Old 08-01-2011, 10:14 PM   #38
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Thanks for the link...my head just exploded.
TANSTAAFL: There Ain't No Such Thing As A Free Lunch.
The Wiki ref. simplified: Adding an alternator to an electrically powered anything is counterproductive.
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Old 08-01-2011, 11:27 PM   #39
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Luke, what everyone really wants to know is when are you going to add Jessie Boxes, HID lighting and a Honda generator on a Happy Trails rack so you can get some real range







PS I am looking forward to riding that bad boy tomorrow!!
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Old 08-01-2011, 11:47 PM   #40
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+1
Tezza

Quote:
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Luke, what everyone really wants to know is when are you going to add Jessie Boxes, HID lighting and a Honda generator on a Happy Trails rack so you can get some real range







PS I am looking forward to riding that bad boy tomorrow!!
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Old 08-02-2011, 12:39 AM   #41
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No pictures today, but progress was made. The lack of pictures was probably for the best. The bike was almost looped, and the presence of a camera probably would have pushed it over the edge. The bike would've been fine. The rider, probably not so much.

I fixed the power problem, so now it has full power again- and still has the nice throttle response. There will probably be a lot more tweaks to this in the future.


It went on the scale this evening. 220 pounds, and roughly even front to back. A pretty good start.

Trail testing is still on for tomorrow.
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Old 08-02-2011, 04:09 AM   #42
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No pictures today, but progress was made. The lack of pictures was probably for the best. The bike was almost looped, and the presence of a camera probably would have pushed it over the edge. The bike would've been fine. The rider, probably not so much.

I fixed the power problem, so now it has full power again- and still has the nice throttle response. There will probably be a lot more tweaks to this in the future.


It went on the scale this evening. 220 pounds, and roughly even front to back. A pretty good start.

Trail testing is still on for tomorrow.
Saweet!

If my left hand pictures were any good I'd volunteer for the duty...
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Old 08-02-2011, 06:51 AM   #43
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If you can get 10 real miles and a half hour recharge, I'm going to totally build one of these. E-Luketric bike! Battery packs could be packaged at little more neatly, but honestly they dont take up much more room than a radiator and shrouds would.
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Old 08-02-2011, 07:56 AM   #44
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If you can get 10 real miles and a half hour recharge, I'm going to totally build one of these. E-Luketric bike! Battery packs could be packaged at little more neatly, but honestly they dont take up much more room than a radiator and shrouds would.
Me too! Except maybe based on something like a 250 Ninja.
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Old 08-02-2011, 04:47 PM   #45
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Originally Posted by Luke View Post
No pictures today, but progress was made. The lack of pictures was probably for the best. The bike was almost looped, and the presence of a camera probably would have pushed it over the edge. The bike would've been fine. The rider, probably not so much.

I fixed the power problem, so now it has full power again- and still has the nice throttle response. There will probably be a lot more tweaks to this in the future.


It went on the scale this evening. 220 pounds, and roughly even front to back. A pretty good start.

Trail testing is still on for tomorrow.
How Much? And what is availability date?
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