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by etard
Dec 20 2008 9:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: Weird servo tester or a regular e-bike throttle?
Replies: 46
Views: 5868

Re: Weird servo tester or a regular e-bike throttle?

I think all of us would want one, how big is the module? Did you take a servotester and just wire in throttle instead of the pot? Later, if Matt's friend comes up with a module that eliminates a BEC and is programmable, I am sure many of us would prefer this over what is currently available (dependi...
by etard
Dec 19 2008 2:35pm
Forum: E-Bike General Discussion
Topic: Senior Engineering Project - E-Trike - suggestions welcome!
Replies: 56
Views: 8726

Re: Senior Engineering Project - E-Trike - suggestions welcome!

CJ, What is the budget you are working with? What machine, welding, tools do you have access to? Do you realize that trikes are not street legal in most (if not all) states? If I were judging your project for viability, I would think this one of the major parameters to make it marketable. Yes, you c...
by etard
Dec 19 2008 2:56am
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Actually my name is Dave, just like you CNC. LOL! If you are going to make slots, it seems like it would be easier to just take those to your local machinist, instead of bothering Matt with such a minute detail. I would rather have threaded holes to mount to, but I suppose slots will do.
by etard
Dec 18 2008 2:03pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Matt,
How is the tension between the motor and first pulley going to be adjusted? I would rather not add an idler. Also, I would like to anodize some parts, would it be hard to find someone to do this locally?
by etard
Dec 18 2008 1:28pm
Forum: E-Bike General Discussion
Topic: Senior Engineering Project - E-Trike - suggestions welcome!
Replies: 56
Views: 8726

tRe: Senior Engineering Project - E-Trike - suggestions welc

I guess you want to keep the speed legal? The advantage of using a trike in the first place is that solid rear axle, you could mount a sprocket on there with an efficient Mars or similarly efficient motor. The Cyclone I would think an excellent choice. You could even use a Kohlmorgan (spelling?) whi...
by etard
Dec 17 2008 3:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Artwork, Jesse James and the OCC guys got nothin on you! Can you put a second stage directly on that one? Or is there different parts necessary for that? How would the chain freewheel sprocket be mounted, alongside that big pulley? Thanks Matt, I can't wait to see this mounted on your beast.
by etard
Dec 14 2008 8:36pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Condolences Matt. Maybe those that are serious about this drive can send a $100 deposit to get you through the holidays without you having to stress. I feel that what you have contributed so far cannot be purchased in any store (unless you want to shell out some serious cash for an optibike). In ess...
by etard
Dec 12 2008 6:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: Freewheel crank resources
Replies: 364
Views: 60619

Re: Freewheel crank resources

It's good to have such knowledgeable guys that have already gone through much of the trial and error already, huh D? That is a good point about peddling, Gary. Since the most we are going to be able to assist the motor will be around 100 watts, it doesn't make much sense worrying to much about peddl...
by etard
Dec 11 2008 1:16am
Forum: E-Bike General Discussion
Topic: Solution for winter wait and Ebike!!! A mini E-SNOWMOBIKE
Replies: 8
Views: 1847

Re: Solution for winter wait and Ebike!!! A mini E-SNOWMOBIKE

Oh Man! Go for it, you have the technology, you can build it. I wonder if it will do a backflip.
by etard
Dec 11 2008 12:42am
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Here here, 3 cheers for the poorman's freeride (as in free from petrol) dirtbike. Matt, Are you content with your batteries from the recumbent? What kind of voltage and C rate would you suggest for the 40 series and 60 series? Who else wants one of these , and what bike are you going to put it on?
by etard
Dec 09 2008 11:17am
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Schu-box would be a good name... if it were still a box.

How about: M.A.A.D.A.M (Much Anticipated And Discussed Aluminium Modulus).
by etard
Dec 08 2008 7:39pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Matt, I like the idea of removing the front derailleur and putting the final stage sprocket to front chainring here instead. I wonder if a sprocket could be designed that has double flanges like the pulleys so that you could shift front sprockets by sliding this "caged" sprocket side to side (much l...
by etard
Dec 08 2008 5:24pm
Forum: E-Bike General Discussion
Topic: DAMNN that's an eBike !
Replies: 16
Views: 2645

Re: DAMNN that's an eBike !

Very nice indeed, give me sidecovers over a bunch of wires and batteries (dynomite) anyday. Is this thing for sale yet, and why isn't this company on our forum? I would think that if one were trying to sell something like this, they would be peddling thier wares on ES. I guess they dont want to give...
by etard
Dec 03 2008 10:18pm
Forum: E-Bike Non-hub Motor Drives
Topic: Left side drive brake options?
Replies: 41
Views: 7684

Re: Left side drive brake options?

That "Top Hat" is an excellent find! How does one align the disk and caliper to make up for the extra material behind the disk? Could you just use spacers on the axle?
by etard
Dec 03 2008 9:59pm
Forum: E-Bike General Discussion
Topic: The push for 70 mph.
Replies: 40
Views: 2817

Re: The push for 70 mph.

I bet that streamliner cabin is a bit of "Misery" wherever you go. Isn't the best part of a bike, motorcycle, the open-air feeling? Wind through your hair (err helmet), smell of orange blossoms (honeysuckle), and the ability to check out that scantily-clad pedestrian...Take this away, I would rather...
by etard
Dec 03 2008 9:32pm
Forum: E-Bike General Discussion
Topic: Spun front axle and flew over the bars @ 25mph
Replies: 159
Views: 15276

Re: Spun front axle and flew over the bars @ 25mph

Sounds almost like my accident, now I have a saying "loose nuts cause sore butts." :cry: On my third set of forks, and hub motor posted for sale. These front hubs are a menace and should be outlawed (although I still ride mine). Glad to hear you survived (who would feed all those monkeys?).
by etard
Dec 03 2008 9:22pm
Forum: E-Bike General Discussion
Topic: An electric quadracycle
Replies: 4
Views: 899

Re: An electric quadracycle

Nice drawing, do you think spatulas will work for pedals? :lol: The advantage of two wheels in the back is that it is much easier to transfer power through a solid axle (like a go-cart). I would run a motor through the gears to shift for speed or hill-climbing. Get a used trike off craigslist ($120)...
by etard
Dec 03 2008 3:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Kyle, The Xtracycle seems to be an ideal setup for Matt's kit, fit it (triangle folded) in the drop outs. As for mounting a left side sprocket, the easiest bolt on approach is the way the ICE bikers do it, by bolting it directly to the spokes. It may seem rudimentary and archaic, but this method wor...
by etard
Dec 03 2008 2:37pm
Forum: E-Bike Non-hub Motor Drives
Topic: Classification of drive types
Replies: 44
Views: 5197

Re: Classification of drive types

Safe,
I was referring to your drive setup.

Paul,
That is an excellent idea, probably will never happen though.

I wonder if a numeric system could be used to somehow communicate gear ratios, or tooth count at each stage of the drive as well.
by etard
Dec 03 2008 12:30pm
Forum: E-Bike Non-hub Motor Drives
Topic: Classification of drive types
Replies: 44
Views: 5197

Re: Classification of drive types

Great topic, I think it will clear the air for everyone. Now I understand Deecanio's drive. I agree with Voicecoils, I think he nailed it from the beginning. I also appreciate the series, parallel analogy, as long as it doesn't create unnecesary confusion. As for Safe.... I would just classify this ...
by etard
Dec 02 2008 9:01pm
Forum: E-Bike Non-hub Motor Drives
Topic: $20 3-speed transmission & other surplus stuff
Replies: 13
Views: 2313

Re: $20 3-speed transmission & other surplus stuff

Cool John,
It sounds like you will be doing alot of testing, how do you propose to test efficiency? Between grabbing up all those batteries, and now these hubs, you must have quite a few projects on the go. Jealous I am, are you going solar on your cross island trip?
by etard
Dec 02 2008 5:04pm
Forum: E-Bike Non-hub Motor Drives
Topic: $20 3-speed transmission & other surplus stuff
Replies: 13
Views: 2313

Re: $20 3-speed transmission & other surplus stuff

I like the idea of that 3 speed tranny, but the gear ratios dont make it worth the loss of efficiency from that heavy component, especially for you to travel so far. It seems you would need as much power from the batttery to the wheel as possible. The aluminum gearbox seems to be a good find, I wond...
by etard
Dec 02 2008 12:53am
Forum: E-Bike General Discussion
Topic: Yamaha Deinonychus
Replies: 2
Views: 505

Re: Yamaha Deinonychus

Very nice! I was just discussing this with some friends, cause we wanted different ergos for each stage of our ride. Beach cruiser position for chillin downtown, mt bike for traffic, bent over for speed. That concept completely leaves out batteries, but I will take the frame and dual hubs all day.
by etard
Dec 01 2008 5:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

Beautiful motor CNC, Have you decided on prices and are you able to take orders? If this motor has twice the power of the Astro, does that mean it will produce twice the torque, or take twice the amps? Also, I would like to be able to run it around 50 volts, will it be able to handle this continuous...
by etard
Nov 29 2008 3:03pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128248

Re: High power RC motor and drive unit production

No, leave it here.... Your "whats on first gear reduction, who's on second gear reduction" is both entertaining and informative. Well at least it kills the monotony until Matt posts more blingy pics. D, I'm not quite visualizing your setup (Kona) folded up behind the seatpost, but driving the cranks??