Search found 683 matches

by donn
Feb 27 2021 10:39am
Forum: EBike General Discussion
Topic: Help with an e-bike for my courier job
Replies: 20
Views: 524

Re: Help with an e-bike for my courier job

If you mean a 30-40' canopy over your charging station, great. More like this: https://www.recumbent.news/wp-content/uploads/2020/04/recumbent-bike-winning-the-Sun-Trip-race-of-solar-bikes.jpg Photovoltaic 405 W peak: Clean Fizz panels 2.35 m² 132 cells Sunpower C60 Solar charger: 2 Génasun 54.2 V ...
by donn
Feb 23 2021 1:24pm
Forum: EBike General Discussion
Topic: Help with an e-bike for my courier job
Replies: 20
Views: 524

Re: Help with an e-bike for my courier job

I love regen, but I have the most use for it down hill. For quick stops on flat ground, it seems to me you'd have to dial up the regen force pretty high to get much value out of it, and just generally it doesn't seem worth it. Considering the trade off, which is that you'd need some power to the mot...
by donn
Feb 19 2021 12:36pm
Forum: EBike General Discussion
Topic: Newbie rear hub drive Q's- how not to fry my motor
Replies: 14
Views: 363

Re: Newbie rear hub drive Q's- how not to fry my motor

If you know how long it is, and how tall the top is, the average grade is the Rise (height / Run (length). If you go to google maps, or maybe "strava", you can use the elevation features to see slopes in some places. What I do: use google maps to get "directions", set the route ...
by donn
Feb 16 2021 10:37am
Forum: EBike General Discussion
Topic: 1000w throttled ebike that also pedals and looks stealthy?
Replies: 4
Views: 265

Re: 1000w throttled ebike that also pedals and looks stealthy?

As MadRhino says, the more it looks like a bicycle, the more it will be like a bicycle. Take the Bianchi e-road: https://electricbikeadvisor.com/wp-content/uploads/2019/10/Bianchi-Aria-e-road-review-2019-675x445.png It's no motorcycle. You get a raging 250W out of this 36V system, and 7Ah battery th...
by donn
Feb 13 2021 10:57am
Forum: EBike General Discussion
Topic: Seeking advice for commuter e-bike setup
Replies: 21
Views: 529

Re: Seeking advice for commuter e-bike setup

Also do you have any experience with geared rear hubs or should I not even consider them? For trips like that, practically anything will work, so unfortunately you have to consider them all. I'm kind of prejudiced against crank drives, but people seem to get along with them OK and after all, it see...
by donn
Feb 12 2021 3:19am
Forum: EBike General Discussion
Topic: Seeking advice for commuter e-bike setup
Replies: 21
Views: 529

Re: Seeking advice for commuter e-bike setup

Direct drive, with some cooling, controller with regen and 52V 20Ah battery should do it. Basically you're using power climbing about half the distance each way, so need around 18 total miles worth of assist/battery capacity. Or, you can have a smaller battery and assume recouping a portion of the ...
by donn
Jan 27 2021 12:28am
Forum: EBike General Discussion
Topic: Fabricating a Super73 like frame and fork
Replies: 19
Views: 645

Re: Fabricating a Super73 like frame and fork

I'm no expert on this, but I think the appearance of a seam is the least of your worries. It's more about having a frame that will handle its stresses well and make for a pleasant ride. Of course also that it's a workable material that can be bent and joined with reliable results, but you can bend a...
by donn
Jan 26 2021 10:38am
Forum: EBike General Discussion
Topic: Fabricating a Super73 like frame and fork
Replies: 19
Views: 645

Re: Fabricating a Super73 like frame and fork

Should I use steel or aluminum alloy tubing? ... Also is that going to complete 2 frames and 2 forks? ... I got a mad man helping me who has vision and knows what he is doing with the machines(or actually doing the work). I'm going to guess you aren't going to get plans for this, so you'll just hav...
by donn
Jan 21 2021 1:55pm
Forum: EBike General Discussion
Topic: Critique this performance velomobile idea
Replies: 226
Views: 34386

Re: Critique this performance velomobile idea

If I had the money for the tools to do so, I'd give a go at producing such a motor and a matching controller to drive it. I am confident that if the product were good, I'd make a small but reliable profit. As more of the product entered the market, more users and potential buyers could see whatever...
by donn
Jan 21 2021 12:45am
Forum: EBike General Discussion
Topic: Commuting and fun: Ebike Vs E-scooter.
Replies: 12
Views: 423

Re: Commuting and fun: Ebike Vs E-scooter.

That word "scooter" - hope I never see it or hear it again. Scooter: https://cdn3.volusion.com/qcyhg.zvdeh/v/vspfiles/photos/116-GC440-2.jpg?v-cache=1459175507 Scooter: https://eriderbikes.com/wp-content/uploads/2018/05/cream-color2-1024x1024.jpg Scooter: https://pisces.bbystatic.com/image...
by donn
Jan 16 2021 10:28am
Forum: EBike General Discussion
Topic: Aerodynamics
Replies: 307
Views: 42527

Re: Aerodynamics

Fluted polypropylene / "coroplast", very popular for home made inventions - light, strong and cheap if you can use discarded campaign signs. It isn't miraculously easy to work with, though. Its durability comes at the expense of being so chemically stable that there's no practical way to r...
by donn
Jan 12 2021 11:18am
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

They do it for a moment, with all their senses alert, attention focused, mind and body primed to react. For all the good it would do them, if something went wrong. Whatever, it's your ass and no one minds if you do that kind of thing. Like ... say, sailing. Once I talked to a guy who had sailed alo...
by donn
Jan 12 2021 12:55am
Forum: EBike General Discussion
Topic: RANS recumbent frame kit for Bafang M series mid-drives
Replies: 4
Views: 148

Re: RANS recumbent frame kit for Bafang M series mid-drives

People who ride this kind of recumbent sometimes claim that the long frame provides enough suspension already. I don't know, of course that's unquantified evaluation from people who never had real suspension in the first place, but it is a little different from the tight geometries of shorter recumb...
by donn
Jan 11 2021 6:49pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

MadRhino wrote:
Jan 11 2021 6:15pm
Only here on ES we are well over a hundred to beat that speed building exclusively with bicycle components.
Over a hundred! Holy mackerel! That must be just about everyone there is!
by donn
Jan 11 2021 3:53pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

So if the frame is strong enough, the safety concerns become axles (thru-axles) and wheels (Boost flange spacing), braking consistently from greater speed (hydraulic discs), and lights to see and be seen. Drivetrain reliability and battery protection are tertiary safety concerns. For braking at mot...
by donn
Jan 11 2021 1:44pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

MadRhino wrote:
Jan 11 2021 1:05pm
Some just can’t figure out what it is to brake a bike from 60 mph in emergency situation.
Anyone who needs to worry about braking from 60 MPH, needs to be looking beyond bicycle technology (including apparel.)
by donn
Jan 11 2021 10:57am
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

And while you may regard the trickledown of tech from motorcycle to mountain bikes to road bikes as unnecessary "fad stuff," this isn't a bike forum. You're posting on a forum dedicated to turning bicycles into.. light electric motorcycles. So even though I ride rim brakes and bolt-on axl...
by donn
Jan 10 2021 4:26pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

Just scanning the first page, it was never real clearly about anything in particular, but it was a fairly genuine discussion until we started in with stories along the lines of "serious bikers" do this and that, and people who aren't into those things "don't want to acknowledge" ...
by donn
Jan 09 2021 7:19pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

I don't know about Chalo, but my caution about new hotness, from having been a casual bicyclist since the '70s, is that these benefits are often not real meaningful to me , or to the very many of us who don't have any reason (if there even can be a reason?) to engage in any kind of competitive cycli...
by donn
Jan 04 2021 11:04am
Forum: EBike General Discussion
Topic: Kickstands
Replies: 12
Views: 417

Re: Kickstands

I would try to think of something that can wrap around the metal part stub of the kickstand but yet still give you the length you need, almost like any sort of pipe. I lengthened a kickstand leg with a left over scrap of copper water supply pipe. Its inside diameter was a good fit with the leg's ta...
by donn
Dec 31 2020 6:54pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

I have to say, I think I may care more about what a pedi-cab mechanic thinks, than about anything based on electric bicycle racing. I can think of nothing more nonsensical than a race between electric bicycles.
by donn
Dec 31 2020 2:59am
Forum: EBike General Discussion
Topic: home remodeling contractors residential construction near me
Replies: 0
Views: 521

Re: home remodeling contractors residential construction near me

Maybe your everyday routine is very soaking up, and also you have not recognized that your home additionally requires focus. Residence Renovation will always declare, as well as over time your residence will certainly continue to be in stable problem. Thanks, I think you have put your finger on my ...
by donn
Dec 30 2020 1:37pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

I feel like a middrive makes the most of the 4000 watts the controller supplies. Am I right about that? I have done it only once, on a motorcycle ca. 40 years ago. The other guy probably had better initial acceleration - in principle, because if I remember right he had a single cylinder, possibly 2...
by donn
Dec 29 2020 3:26pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

The unsprung weight doesn't have to be the reason why hub motors don't show up in races. From a builder's point of view, it seems to me that putting the motor inside the wheel is just a gratuitous complication. For the consumer, it's very different - that hub has already been designed and manufactur...
by donn
Dec 29 2020 11:31am
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2523

Re: Middrive e bike v. car drag race

Ebike racing today, is mid drive domain because of power limitation rules, because the races are organized and sponsored by ebike manufacturers. I guess here you're talking about multiple gears? No doubt a great advantage, if your drive train can support the loads anyway. But the winning bicycle ab...