Search found 104 matches

by Electric Earth
Jun 11 2020 4:33am
Forum: Battery Technology
Topic: Need a video of a lipo fire
Replies: 7
Views: 357

Re: Need a video of a lipo fire

Hillhater wrote:
Jun 01 2020 6:24pm
So you are helping to formulate regulations to restrict/ licience the use of drones..... for the UN !
Eh. People are too rude and self-centered to regulate themselves with things like drones and speaker-phone in public areas. I say regulate away in this case.
by Electric Earth
Jun 10 2020 5:23pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Trying to understand controllers and high rpm small wheels...
Replies: 2
Views: 830

Re: Trying to understand controllers and high rpm small wheels...

The controller only cares about electrical RPM... I don't know what your project is but tech direct club has pretty cheap used scooter motors with cheap or free shipping in the US and usually a few percent off. https://www.techdirectclub.com/hub-motor-front-wheel-assembly-for-electric-scooter/ Than...
by Electric Earth
Jun 10 2020 11:03am
Forum: Stand-up E-scooters and E-skateboards
Topic: Trying to understand controllers and high rpm small wheels...
Replies: 2
Views: 830

Trying to understand controllers and high rpm small wheels...

I've only built an ebike from a kit before, so I didn't have to work out which controller to use. I was reading something on the Grin website about using a controller with a higher eRPM on a smaller wheel. Now that I'm doing a completely cobbled together project, and with small scooter wheels at hig...
by Electric Earth
Jun 06 2020 7:51am
Forum: Stand-up E-scooters and E-skateboards
Topic: A Couple Newbie Questions About Building An E-Scooter
Replies: 5
Views: 721

Re: A Couple Newbie Questions About Building An E-Scooter

If this was my project I would look for used bargain stand up scooters. Or even go balls deep and make it yourself for true lightweight stand up scooter. Imagine you lugging that thing up and down the stairs in your building, several times a day maybe. As fun as those are to ride for 5 minutes I am...
by Electric Earth
Jun 06 2020 7:35am
Forum: Stand-up E-scooters and E-skateboards
Topic: A Couple Newbie Questions About Building An E-Scooter
Replies: 5
Views: 721

Re: A Couple Newbie Questions About Building An E-Scooter

Realistically, a 20" push scooter isn't likely to be much, if any, lighter than a 20" bicycle. May even be heavier if it's a cheap scooter frame using thickwall mild steel tubing. By the time you stick motor/batteries/etc on there, the difference will probably be irrelevant. Just like anything else...
by Electric Earth
Jun 05 2020 7:55am
Forum: Stand-up E-scooters and E-skateboards
Topic: A Couple Newbie Questions About Building An E-Scooter
Replies: 5
Views: 721

A Couple Newbie Questions About Building An E-Scooter

I'm looking to build a small E-vehicle to get around town mostly on bike paths and side streets and have been thinking about doing a scooter rather than a bike this time. I like the idea of the smaller size and weight. I was thinking of using a 20" wheel platform. I know I at least want a disk brake...
by Electric Earth
Jun 03 2020 5:33pm
Forum: E-Vehicles General Discussion
Topic: E-bike or E-motorcycle?
Replies: 26
Views: 1759

Re: E-bike or E-motorcycle?

I was under the impression that velomobiles were pretty fast, and basically a trike with an aerodynamic body over them. Am I mistaken, or is there something that makes them different and better at high speed stability?
by Electric Earth
May 30 2020 9:28am
Forum: E-Vehicles General Discussion
Topic: E-bike or E-motorcycle?
Replies: 26
Views: 1759

Re: E-bike or E-motorcycle?

This 28Mph e-conversion project was engineered with a focus on value, performance, and stealth. Glad you posted this. An e-trike was actually on my mind the more I thought about the build. I think it could be a good option in the winter due to the ability to add a large fairing to keep me warmer in...
by Electric Earth
May 21 2020 7:50am
Forum: E-Bike General Discussion
Topic: Old GT Full Suspension - The Perfect Road Build Platform?
Replies: 16
Views: 487

Re: Old GT Full Suspension - The Perfect Road Build Platform?

Early to mid 2000's Giant Trance and Anthem's, Trek Fuel's, Kona Stinky's and Rocky Mountain Edge's and Slayer's are some of the best. Thanks for the link. My last bike was on a mid-2000s Trek Fuel frame. While better than most modern FS bikes, it still didn't have a ton of space. I'm not sure how ...
by Electric Earth
May 20 2020 6:17am
Forum: E-Bike General Discussion
Topic: eZee vs MAC? Your thoughts?
Replies: 33
Views: 993

Re: eZee vs MAC? Your thoughts?

That's gonna be a big battery to hang on a seat post rack. Make sure you have a hell of a seat post, and a sturdy rack. Maybe do a custom job? I had a rack rated for 20lbs with a little 36v 12ah battery on it and it snapped after a couple months. I could only imagine your battery at Moab is going to...
by Electric Earth
May 19 2020 4:11pm
Forum: E-Bike General Discussion
Topic: Is It OK To Leave The Bike Outside In Winter?
Replies: 17
Views: 386

Re: Is It OK To Leave The Bike Outside In Winter?

I'm so spoiled after living here over 20 years that below +18°C (64°F) gets a bit nippy at night and 22° or higher I turn on the fan, which is rarely used. During the day it gets few degrees warmer, but there's generally a breeze. Living in the tropics at altitude is hard to beat. The OP did say he...
by Electric Earth
May 17 2020 3:42am
Forum: E-Bike General Discussion
Topic: Old GT Full Suspension - The Perfect Road Build Platform?
Replies: 16
Views: 487

Re: Old GT Full Suspension - The Perfect Road Build Platform?

Ooo. That mid-90s FSR looks promising too. Thanks for posting!
by Electric Earth
May 16 2020 3:02pm
Forum: E-Bike General Discussion
Topic: Is It OK To Leave The Bike Outside In Winter?
Replies: 17
Views: 386

Is It OK To Leave The Bike Outside In Winter?

I know it's bad to leave the battery out in the cold. Does it matter if you take the battery off of the bike each day and leave the bike itself out in an unheated garage, and in the morning bring the battery out, pop it on the bike, and go? I'm moving to a place without a heated place to store the b...
by Electric Earth
May 15 2020 10:49pm
Forum: E-Bike General Discussion
Topic: Old GT Full Suspension - The Perfect Road Build Platform?
Replies: 16
Views: 487

Re: Old GT Full Suspension - The Perfect Road Build Platform?

I don't have the GT yet, but getting a suitable frame is something I'm willing to invest my time and effort into. So far I'm at the stage of finding the best platform to build on(within reason, monetarily). Then I'll move onto the motor selection, figure out/build battery, and select controller. I'v...
by Electric Earth
May 15 2020 10:03am
Forum: E-Bike General Discussion
Topic: Old GT Full Suspension - The Perfect Road Build Platform?
Replies: 16
Views: 487

Re: Old GT Full Suspension - The Perfect Road Build Platform?

Since the v-brake would only be in the rear, with a nice hydraulic disk front, I think it would be fine. A v-brake will easily lock a rear wheel if need be. It's hard for me to tell very well from the picture, but the Specialized seems like it might still have a fairly small main triangle. It might ...
by Electric Earth
May 15 2020 7:27am
Forum: E-Bike General Discussion
Topic: Old GT Full Suspension - The Perfect Road Build Platform?
Replies: 16
Views: 487

Old GT Full Suspension - The Perfect Road Build Platform?

In my research/planning of a build to do ~35mph and long distances on bike paths, roads, and gravel rail-trails, it seems like one of these old GT full suspension bikes would be perfect. There's no need for long suspension travel if not off-roading, but I figure some rear suspension would be nice fo...
by Electric Earth
May 15 2020 6:17am
Forum: E-Bike General Discussion
Topic: Setting up dual drivetrain ebike
Replies: 34
Views: 1587

Re: Setting up dual drivetrain ebike

Mid Drive Hub Motor Media Group
viewtopic.php?f=6&t=38553&hilit=media

With modern bafang style mid-drives available, is there any benefit to using a hub motor as a mid-drive rather than one of those?
by Electric Earth
May 14 2020 6:06pm
Forum: E-Bike General Discussion
Topic: Setting up dual drivetrain ebike
Replies: 34
Views: 1587

Re: Setting up dual drivetrain ebike

Did some more research and found this video of a guy who built a mid drive. He just takes off the fixed gear, leaves the freewheel on the other side attached to the pedals, and attaches a belt and pulley system to the other side to be powered by the motor. The motor doesn't spin the pedals even tho...
by Electric Earth
May 13 2020 7:32pm
Forum: E-Bike General Discussion
Topic: Setting up dual drivetrain ebike
Replies: 34
Views: 1587

Re: Setting up dual drivetrain ebike

The benefit would be so that you can freewheel rather than being fixed gear all the time. It just seemed like it would be easier to weld a freewheel onto the motor shaft than to mess around with adapting the rear hub. Also, I just noticed I posted the same link twice. This is the one that says it wo...
by Electric Earth
May 13 2020 7:28pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport
Replies: 97
Views: 12183

Re: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport

Newbie question here, but I'm trying to learn about a potential e-moto build and am very interested in a gearbox. If it has mega torque and rock crawler speeds in 1st and 2nd gear, and not a very high top speed, is there any reason to not change sprocket size to make it more usable in a street appli...
by Electric Earth
May 13 2020 6:14pm
Forum: E-Bike General Discussion
Topic: Setting up dual drivetrain ebike
Replies: 34
Views: 1587

Re: Setting up dual drivetrain ebike

What about normal pedal drive-train on the right side as normal, motor on the left side. Freewheel on the normal drive side. Weld a 9t BMX freewheel to the motor shaft on the motor driven side. So it'll still be fixed in the rear, with the freewheeling on the motor shaft itself. That seems most simp...
by Electric Earth
May 13 2020 5:42am
Forum: E-Bike General Discussion
Topic: Setting up dual drivetrain ebike
Replies: 34
Views: 1587

Re: Setting up dual drivetrain ebike

I'm not really understanding the dual drive-train part. Could you explain more of the benefits you'd like out of the dual drive-train? What part of a standard set-up won't suit your needs, or needs to be different? Unless this is just for the sake of fun, which I totally get. I'm just not sure how i...
by Electric Earth
Apr 26 2020 11:25am
Forum: E-Bike General Discussion
Topic: Cassette shaking when motor spinning normal?
Replies: 5
Views: 142

Re: Cassette shaking when motor spinning normal?

Hmm... Whether or not it's normal for Those motors, I don't know, but I wouldn't be OK with it. I've been a cyclist my whole life, and I've never had that before, including on the couple cheapo hubmotors I've dealt with since getting into ebikes. I would very much think it's going decrease shifting ...
by Electric Earth
Apr 26 2020 3:00am
Forum: E-Bike General Discussion
Topic: E-ing a Mongoose Fireball
Replies: 3
Views: 209

Re: E-ing a Mongoose Fireball

Is that a mount for an e-type front drailer, or just a chain guide?
by Electric Earth
Apr 15 2020 11:26am
Forum: E-Bike General Discussion
Topic: speed traps
Replies: 16
Views: 487

Re: speed traps

I agree with the above. If you're out on a straight with no one around, by all means hit the throttle. But you're probably not getting hit with a speeding ticket then. If there are people around or it's in town where there are intersections along the bike path(roads, paths, sidewalks, etc) then you ...