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Old 07-07-2008, 09:27 PM   #11 (permalink)
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Quote:
Originally Posted by dremd View Post

That said there needs to be a rating system like 15 miles unassisted on flat ground at 10 mph.
and with a 200 lb rider

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Old 07-07-2008, 09:29 PM   #12 (permalink)
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Quote:
Originally Posted by dremd View Post
My E-bike weighs 55 lbs and it is Aluminum.
So 81 wit packaging is not un-reasonable.

18 mph on 450 watts would be optomistic in my book, especially with a 24 volt permanent magnet set up.

Oh, wait a minute I'm just Fat.

For reference 450 watts can hold me around 16 mph without assist, but I weight 250 lbs. I'm 800 peak watts 36 volt. I want to put the whatts up on my dad's bike to see how it does.
Mine is 70 pounds and 36 volts. Flat out on level ground 23 mph. I'm 160 pounds. I think that 18 from a 24v system is pretty optimistic.

I agree there needs to be a better measuring gauge. The folks on the 36v system say that it's 20 miles at 20 mph or 1 hour on level ground.
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Old 07-07-2008, 09:33 PM   #13 (permalink)
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Quote:
Originally Posted by offroad1994 View Post
and with a 200 lb rider

VERY GOOD POINT!
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Old 07-08-2008, 09:42 AM   #14 (permalink)
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So... for 350, is it worth it? Is this a viable daily in-town commuter bike? Is it going to work in a year?
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Old 07-08-2008, 10:25 AM   #15 (permalink)
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I'd say as long as your commute isn't too long, it's probably well worth it.
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Old 07-08-2008, 10:28 AM   #16 (permalink)
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I'd say that if you can almost bike now, then this would be perfect.
I'm sure that th batts will last about 300 cycles if GENTLY used, otherwise much less cycles.
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Old 07-08-2008, 12:59 PM   #17 (permalink)
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... and they're already out of stock. Bummer, I wanted one.
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Old 07-10-2008, 03:21 AM   #18 (permalink)
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Ok, I'm just kind of curious. What type of range is everyone looking at riding a bike? I live in east county San Diego and was bike commuting 20 miles each way without electric.
Faster than public transportation, and kept me in good shape. If your commute is under 10 miles, go for it with a standard, but decent road bike. You'll be amazed at how fast you can do it. I went down this bicycle road long ago, starting with MTB's, then mtb's with slicks, then road bikes, and now I have a full blown performance recumbent.
20 miles takes about an hour in hilly terrain, after you've been doing it for a month. You just have to get out and ride.
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Old 07-10-2008, 03:24 AM   #19 (permalink)
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Quote:
Originally Posted by Lazarus View Post
Mine is 70 pounds and 36 volts. Flat out on level ground 23 mph. I'm 160 pounds. I think that 18 from a 24v system is pretty optimistic.
I agree there needs to be a better measuring gauge. The folks on the 36v system say that it's 20 miles at 20 mph or 1 hour on level ground.
I think these e-bikes are kind of neat, but man 70lbs. How's it do on the hills? I'm old school human bike power. I need to google these, it may be an interim for someone not used to propelling themselves yet. Oh, here's some data for you. 25mph on a road bike requires about 425-450 watts. On a recumbent you need about 250watts. Aerodynamics are everything, have you thought about going aero, or using the propulsion system off the ebike in a more aero design? 23mph fully upright tells me you probably have around a 1/2-3/4hp motor?
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Old 07-10-2008, 03:31 AM   #20 (permalink)
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Quote:
Originally Posted by dremd View Post
My E-bike weighs 55 lbs and it is Aluminum.
So 81 wit packaging is not un-reasonable.

18 mph on 450 watts would be optomistic in my book, especially with a 24 volt permanent magnet set up.

Oh, wait a minute I'm just Fat.

For reference 450 watts can hold me around 16 mph without assist, but I weight 250 lbs. I'm 800 peak watts 36 volt. I want to put the whatts up on my dad's bike to see how it does.

EDIT: and NIMH
hehe, use a little less battery and more of your own power and you can change that. I'm back up to 230 and am getting back on the bike after a year hiatus. I'm running a power meter and average around 200 watts from my legs on a ride. This ebike thing has got me thinking electric assist velomobile? Those things need about 75w on level ground to do 25mph, and joe average can easily maintain 30+ on level ground. It's the weight/hills that kills them.

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