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by etard
Nov 15 2008 12:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: Why not friction drive?
Replies: 85
Views: 16763

Re: Why not friction drive?

WOW! I didn't realize how cheap those HXT's are. Cheack out http://www.nitroplanes.com and you will see that my motor is exactly the same (different paint) as the 250 kv (mine is 295 kv)motor, the picture is of the other side. However, rather than waiting almost a month for the motor, I recieved it ...
by etard
Nov 15 2008 6:40am
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128399

Re: High power RC motor and drive unit production

Matt, This is all good news! Let me be the first to claim a RED ANODIZED drive (oh man, I guess I need some red rims with black spokes). HAHA, that would be epic....how much extra are we talking? Also, will you be providing final drive sprocketing, or should we be prepping our steeds for this? Matt,...
by etard
Nov 14 2008 6:13pm
Forum: E-Bike General Discussion
Topic: Looking for a 48v Brushed controller
Replies: 8
Views: 776

Re: Looking for a 48v Brushed controller

I have a 48 volt controller that I didnt realize it was brushed until after I bought it. I think it was used once. You can pm me if you want to know more.
by etard
Nov 13 2008 7:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: Why not friction drive?
Replies: 85
Views: 16763

Re: Why not friction drive?

I would suggest plugging your values into SwBluto's ebike calculator. I put my current information in, I figured out that to get the speed I want I am gonna have to go 48 volt. Gearing alone wont cut it, it just makes the motor less efficient. Right now I have a 295 kv Exceed-rc Monster Power 110, A...
by etard
Nov 13 2008 1:34am
Forum: E-Bike Technical
Topic: A different kind of E-bike
Replies: 50
Views: 7226

Re: A different kind of E-bike

Welcome D.C., I bet there are some local bike shops that sell electric bikes, surely Georgetown or Alexandria would have at least an izip that you could ride. There is also a manufacturer somewhere there in NoVa that has a bike with a dual hub drive system that gets up to 30 mph. Go ride one, you wi...
by etard
Nov 12 2008 1:33pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128399

Re: High power RC motor and drive unit production

I was wondering how a one-way bearing works and found this site most helpful. http://www.rctek.com/info_bearings_one_way.html Matt, Are you using the Align T-Rex 500 bearings (H50020)? I ordered a motor with a 10mm shaft, these seem to fit my application, but they are ABEC-3 I think. Is there a bett...
by etard
Nov 11 2008 4:55pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128399

Re: High power RC motor and drive unit production

Skydog, I tought about two motors too, but then after you go into all the extra hassle of two controllers, dual throttle input, syncrinising two motors so that it is efficient, splitting voltage, extra drive gears, etc... It is not worth it, unless you are using brushed motors. All you have to do is...
by etard
Nov 11 2008 4:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: speed controller for large hxt
Replies: 5
Views: 1397

Re: speed controller for large hxt

Well if you run it at only 24 volts, you could get away with most decent ESC's because they are usually rated to 30 volts. But if you plan on switching from series to parallel between your batteries you have to get a Castle HV-85 or 110, 'cause those can handle the 48 volts. I think other brands hav...
by etard
Nov 10 2008 11:42pm
Forum: E-Bike General Discussion
Topic: HXT 63-74 200kv Brushless Outrunner on an E-bike
Replies: 26
Views: 10359

Re: HXT 63-74 200kv Brushless Outrunner on an E-bike

Updates please!!! Did you ever get this motor going? I am interested in the quality of the HXT :P
by etard
Nov 10 2008 2:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: Using RC motors on E-bikes [Archive]
Replies: 1244
Views: 153094

Re: Using RC motors on E-bikes

What kind of setup are you running? That motor could be a lot of overkill for your application, If you plan on something lightweight, find an outrunner with an 8 or 10 mm shaft, and maybe go back to 250kv or even 350kv, and gear it down for the rpm. We are all used to huge motors, but properly geare...
by etard
Nov 10 2008 5:03am
Forum: E-Bike Non-hub Motor Drives
Topic: Why not friction drive?
Replies: 85
Views: 16763

Re: Why not friction drive?

Congratulations on your Castle purchase, sounds like you got an excellent price on it. I just got mine (HV-110)in the mail from JohnRobHolmes, and it is amazing the difference in size compared to my far inferior Wilderness controller (too bad you can't shrink batteries with better programming too). ...
by etard
Nov 03 2008 7:10pm
Forum: E-Bike Non-hub Motor Drives
Topic: Why not friction drive?
Replies: 85
Views: 16763

Re: Why not friction drive?

I would say get a cheap rc ESC on ebay and put it on a kids bike, and you might have a nice mini system. I just got my RC Smart (ebay) 560 kv motor and DAMN this thing is small. My first thoughts are to upgrade to a bigger motor, but I'm going to try a simple direct drive first, i.e. motor shaft wel...
by etard
Nov 03 2008 1:43pm
Forum: E-Bike General Discussion
Topic: Triangle box or bag to fit battery inside the frame?
Replies: 13
Views: 3666

Re: Triangle box or bag to fit battery inside the frame?

Very clean Kurt!! It's almost stealth in that it could be a cooler bag full of drinks, or a picnic lunch. :P
by etard
Nov 03 2008 1:11pm
Forum: E-Bike General Discussion
Topic: Building a recumbent bike
Replies: 34
Views: 25799

Re: Building a recumbent bike

I like the look of the SWB racers, and perusing the net came across this for a build. http://www.rqriley.com/imagespln/xr25ss.jpg http://www.rqriley.com/imagespln/xr2-1.jpg Its called the Ground Hugger XR2 The frame cost less than $300 to build!! If you watch the video, the steering placement sucks,...
by etard
Oct 31 2008 6:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: throttle for RC motor
Replies: 22
Views: 5882

Re: throttle for RC motor

OK, so I just got all the parts for Matt's throttle from his recumbent build. But before I get started I was wondering if somebody knows how to use a three wire throttle such as a magura instead of the knob he uses. Or at least, the additional parts I need would be nice, any help will be appreciated...
by etard
Oct 31 2008 5:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128399

Re: High power RC motor and drive unit production

Matt, You guys seem to be working in the 4KW range, will this drive still be efficient at 1-3KW ? I plan on using the HV110 (gotta order that from Holmes) and maybe a Hacker 60 series setup. I want to stay in the 15 pound range, so battery weight is an issue. Also, I ordered all the parts to make th...
by etard
Oct 31 2008 12:45am
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128399

Re: High power RC motor and drive unit production

Sproder, huh... Now your making things up Matt. Haha The cessna yoke sounds like something I was contemplating. So what, you pull back to go faster and push foward to brake. That would add a whole new experience to those trikes. What if you rigged the seat to sit up a lil when you push foward, and s...
by etard
Oct 30 2008 4:04pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128399

Re: High power RC motor and drive unit production

I think alot of us are going to put this system on DH bikes, so my concern is what to do about a rear brake. Looking at my bike, if the drive unit where to feed from the top of the rear tire to a gear on the rear disk mount, it could be possible to have a disc caliper between the chain, inside the d...
by etard
Oct 29 2008 1:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: High power RC motor and drive unit production
Replies: 1181
Views: 128399

Re: High power RC motor and drive unit production

Yes a sketch please! Fingerpaint, crayons, whatever. I need to know how it can all be done on one shaft. I'm losing sleep over this. Oh yeah, can mine have lasers on it? Hehe These are exciting times, everything is moving so fast now. I hope you guys are going through the necessary steps to protect ...
by etard
Oct 28 2008 8:48am
Forum: E-Vehicles General Discussion
Topic: 48V, 93 MPH
Replies: 6
Views: 1299

Re: 48V, 93 MPH

So 60 #'s of batteries? Why not use some Prius or lithium batteries?
This would seem to be your ultracapacitor application.
by etard
Oct 27 2008 5:13pm
Forum: E-Bike General Discussion
Topic: Kestrel on Ebay
Replies: 5
Views: 560

Re: Kestrel on Ebay

You are right about the weight balance, I would have figured out a way to mount a pancake style battery inside that huge open area in the frame, and then covered it with some very thin sheets of carbon fiber (money no object). But I like the rear disc style hub rim. It would really be sick to forego...
by etard
Oct 27 2008 3:05am
Forum: E-Bike General Discussion
Topic: Kestrel on Ebay
Replies: 5
Views: 560

Kestrel on Ebay

Has anybody seen this bike yet? :twisted: Very similar to the Kestrel cyclone build from New Zealand, but with a rear hub motor. Although, for the price, I would have at least gone with some V28's. Also notice the lack of seat tube. 8) Very nice kickstand. :lol: http://cgi.ebay.com/ws/eBayISAPI.dll?...
by etard
Oct 25 2008 3:13pm
Forum: E-Bike Non-hub Motor Drives
Topic: throttle for RC motor
Replies: 22
Views: 5882

Re: throttle for RC motor

This watt meter seems to be the best. http://www.eagletreesystems.com/MicroPower/images/mprv3-angle-sm.gif http://www.eagletreesystems.com/MicroPower/images/powerpanel-angle.gif So many plug in options, you could really spend alot of coin on something like this. Maybe one of these days we will final...
by etard
Oct 24 2008 4:29pm
Forum: E-Bike Non-hub Motor Drives
Topic: throttle for RC motor
Replies: 22
Views: 5882

Re: throttle for RC motor

Matt,
Are you saying the knob on that Turnigy Wattmeter will act as a throttle, or does it just adjust the modulation, and you still need a servotester?
Can I just use a line directly out of the ESC to a potentiometer knob from say Radio Shack? And if so, which ohm variance?
by etard
Oct 23 2008 2:54pm
Forum: E-Bike Technical
Topic: Ultra Caps?
Replies: 106
Views: 13005

Re: Ultra Caps?

I was thinking these might be good with a solar powered charger, alongside your normal ebike setup. I would use it like a booster pack, to get up that hill, or around that car, etc... I wonder how long it would take to charge up enough juice to make it worth it.