Search found 923 matches

by deardancer3
Dec 31 2007 12:21pm
Forum: EV Business World
Topic: Taking Charge: Let's Develop the Products That We Want!
Replies: 35
Views: 21775

Re: Taking Charge: Let's Develop the Products That We Want!

With Gas prices predicted to go to at least $3.75 in most of the US this spring, Wonder what ebikes would be the best to advise customers to consider? We would have to categorize things into the most asked for, or average/basic, use; 6-9 miles to work each way, recharge at work, 200 lb rider, modera...
by deardancer3
Dec 30 2007 1:07pm
Forum: E-Bike General Discussion
Topic: Best long range e bike. and moter? Upright , bent , trike,
Replies: 16
Views: 1741

Re: Best long range e bike. and moter? Upright , bent , trike,

Hi guys, Hey thanks.. Yeah i cant decide on a trike or bent. I think the trike is a better idea. However the local bike shop has a really nice disk brake bent .. For a good price.. what model? local purchase, local service, good price, support the local guy. Trikes are nice but all speed records ar...
by deardancer3
Dec 30 2007 11:10am
Forum: E-Bike General Discussion
Topic: Best long range e bike. and moter? Upright , bent , trike,
Replies: 16
Views: 1741

Re: Best long range e bike. and moter? Upright , bent , trike,

A 2 wheel recumbent with a good front fairing would give you one of the most efficient frames for the money, IMHO. 3 wheels adds weight, complexity and different riding technique, but if you have balance problems or are in bad weather, there is no subsitute. Adding a full fairing adds even more weig...
by deardancer3
Dec 28 2007 8:31pm
Forum: Polls & Surveys
Topic: Would You Race?
Replies: 26
Views: 4344

Re: Would You Race?

Actually, I would not race, even though I said I would. I would travel and pay though. and be pit crew for my ebike.

That because my ebikes can race, but I would look for a much lighter rider. so I wanted to answer with "functional" accu "race" y.

dick
by deardancer3
Dec 28 2007 2:43pm
Forum: Battery Technology
Topic: BATTERY DANGERS
Replies: 19
Views: 1535

Re: BATTERY DANGERS

Add: when working on batteries, remove all metal and jewelry, make sure you are working on a non- conductive surface.

And no smoking.
by deardancer3
Dec 28 2007 10:32am
Forum: Battery Technology
Topic: Charging NiCds?
Replies: 9
Views: 847

Re: Charging NiCds?

Depends on what typoe of charging you are going to do. two different methods, but there are more. If you are going to need quick road charging, you need a amp hour meter and/or a a smart charger. If you think you can make your day's travels without a fast road charger, then you can go cheaper and ju...
by deardancer3
Dec 25 2007 10:54pm
Forum: E-Bike Reviews & Testing
Topic: Riding in the rain shorted out my ebike
Replies: 12
Views: 2104

Re: Riding in the rain shorted out my ebike

Due to the design and complexity of the controllers, Brushless controller failures have less liklihood of applying full power to the motor on their own. A brushed motor controller, with just one FET shorted, ( or moisture induced short) can apply quite a bit of power to a brushed motor. Since you ha...
by deardancer3
Dec 25 2007 10:24pm
Forum: E-Bike General Discussion
Topic: Call to all Australian e-bike enthusiasts!
Replies: 82
Views: 5878

Re: Call to all Australian e-bike enthusiasts!

I think you will need about 350 watts (at the wheel) for a 180lb rider with a 60 lb bike (bike, batteries, motor and groceries) to go up a 6% grade at 10mph. If the average rider is capable of putting out 125 watts continuous, and a good chain drive motor is about 80% efficient, with a motor of 200w...
by deardancer3
Dec 25 2007 12:54pm
Forum: E-Bike General Discussion
Topic: Call to all Australian e-bike enthusiasts!
Replies: 82
Views: 5878

Re: Call to all Australian e-bike enthusiasts!

Looks like there are now several ways to view this great study, see several previous postings. And actually, it is a good resource for all ebikers who have to fight the "You are cheating " mantra. (this study disappeared for a while, but The University of Monash sent me a copy around 2006 and said i...
by deardancer3
Dec 24 2007 10:29pm
Forum: E-Bike Technical
Topic: Connectors making me nervous...
Replies: 4
Views: 642

Re: Connectors making me nervous...

YPedal is right. The color code may be accurate, someone mated the two connectors incorrectly. If you lose the roll pin, one tine from a plastic fork works well and is in conductive. For everything i make, I have a standard for anderson power pole connector configuration. dont know if crystalyte doe...
by deardancer3
Dec 24 2007 9:49pm
Forum: E-Bike Technical
Topic: Connectors making me nervous...
Replies: 4
Views: 642

Re: Connectors making me nervous...

I had a simalar problem from crystalyte years ago. On the controller, to see which power lead is really ground, put an ohm-meter on its lowest resistance setting, and with no battery connected, buzz from one power lead to each of the brake connector leads. If no zero or very low ohm reading, change ...
by deardancer3
Dec 24 2007 8:20pm
Forum: E-Bike General Discussion
Topic: Call to all Australian e-bike enthusiasts!
Replies: 82
Views: 5878

Re: Call to all Australian e-bike enthusiasts!

[quote="getadirtbike"]Deardancer3, I'm not sure if anyone else can view the file but I can't open the link. It sounds like a very handy file to have if anyone's going to make an attempt and chaning things here. Plus the study was done by a well known melbourne university which will have some sort of...
by deardancer3
Dec 24 2007 10:36am
Forum: E-Bike General Discussion
Topic: Call to all Australian e-bike enthusiasts!
Replies: 82
Views: 5878

Re: Call to all Australian e-bike enthusiasts!

I'm not an Aussie, but thought you all might like some information from your own country. some years ago, one of your top Universities, Monash I think, ran a big Ebike test/study. That study is posted around in differnt places, one being at yahoo power assist files, "Power Assisted Bicycles Final Re...
by deardancer3
Dec 23 2007 11:04am
Forum: E-Bike Technical
Topic: will this charger work
Replies: 6
Views: 523

Re: will this charger work

For 37 lbs, guess you wont be taking that with you on the road. I would go to soneils website and review their pages on hooking up their indentical chargers together in parallel and serially. http://www.soneil.com/Completesets/Parallel%20&%20Serial%20Application.pdf Then go shopping to buy two 4 amp...
by deardancer3
Dec 21 2007 12:39pm
Forum: E-Bike General Discussion
Topic: new to e-bikes
Replies: 27
Views: 3296

Re: new to e-bikes

Bernard, sorry to be late on this topic, but I must say, your bike looks extremely easy to install a mid drive e-assist. Especially if you go mandatory pedalling, that would be a really easy install. A 500w cyclone would be easy, would be pretty fast, and really nice to your batteries with the adju...
by deardancer3
Dec 20 2007 1:12pm
Forum: E-Bike Reviews & Testing
Topic: Got it Running!! Cursed Anderson connectors..
Replies: 20
Views: 3838

I also have some problems with Anderson power poles. Some things i have done; made little mini bungie cords (out of good rubberbands and plastic bottle cap) to hold the seperating connectors together, For roll pins-I use appropriately sized tines from plastic forks; I dont like small metal roll pin...
by deardancer3
Dec 19 2007 2:03pm
Forum: E-Bike Technical
Topic: What Should I Do With This Bike?
Replies: 24
Views: 1925



If you are in southern california, I know a guy with a stripped ebike (sharper image) that still has a rear brushed motor- the guy would probably trade the rear hub motor even up for someone making the bike a useful beach cruiser with a single speed 26" wheel.


dick
by deardancer3
Dec 19 2007 11:59am
Forum: E-Bike General Discussion
Topic: are there any E-bike trade fairs or races any time soon?
Replies: 3
Views: 441

there is an alternative vehicle show and race (ebikes welcome of course) in the far 'burgs of southern california; weekend Jan 26 - 08.
http://members.cox.net/electric_dragin/img1.html


dick
by deardancer3
Dec 17 2007 11:59pm
Forum: Battery Technology
Topic: Building Nimh Packs, Thermistors, and charging.
Replies: 28
Views: 5001

I guess one of my questions restated is

"will the standared hipower/nexcell 24v charger still work correctlyif i add one 1.2v identical cell to the original pack and try to charge it with a 24v NIMH charger?"

dick
by deardancer3
Dec 17 2007 2:41pm
Forum: Battery Technology
Topic: Building Nimh Packs, Thermistors, and charging.
Replies: 28
Views: 5001

Looked like an OK place to put this question; I am thinking of adding 1 or 2 identical NIMH cells to an existing NIMH 12ah pack for me and for a customer, cyclone systems 24v currently. will the present Nimh Hipower chargers charge this new pack OK? any thoughts, experience, etc? dick in colorado
by deardancer3
Dec 12 2007 1:37pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1624
Views: 190480

Recharge to 90% in 5 min. http://apnews1.iwon.com//article/20071212/D8TG1JE01.html TOKYO (AP) - Toshiba plans to make a quick-charging new battery for forklifts, construction machinery and other industrial use. Toshiba Corp.'s Super Charge ion Battery, to start shipping in March, can recharge to 90...
by deardancer3
Dec 11 2007 9:52am
Forum: E-Bike Technical
Topic: Squeezing out range ... questions about voltage and amperage
Replies: 31
Views: 2995

Excuse me for jumping in here, but have questions on the EZ-1 assist: Are you going to drop to 36v with SLA's? that is going to seriously decrease your range if you do because 1- carrying less battery energy, and 2-higher current draw for hill climbing to get same wattage assist which decreases num...
by deardancer3
Dec 09 2007 11:57am
Forum: Resources & EV Related Parts and Services
Topic: Power calculator
Replies: 33
Views: 28177

I like this power calculator; thought I would share.

(It lets you easily swap out different bike frames with default setting)

http://www.kreuzotter.de/english/espeed.htm


Dick in colorado