Search found 675 matches

by donn
Jan 21 2021 1:55pm
Forum: E-Bike General Discussion
Topic: Critique this performance velomobile idea
Replies: 225
Views: 34010

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: E-Bike General Discussion
Topic: Commuting and fun: Ebike Vs E-scooter.
Replies: 9
Views: 234

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: E-Bike General Discussion
Topic: Aerodynamics
Replies: 307
Views: 42334

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: RANS recumbent frame kit for Bafang M series mid-drives
Replies: 4
Views: 120

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Kickstands
Replies: 12
Views: 379

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: home remodeling contractors residential construction near me
Replies: 0
Views: 515

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

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...
by donn
Dec 28 2020 6:37pm
Forum: E-Bike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 2341

Re: Middrive e bike v. car drag race

It was a mid drive, but its large motor was in one gear, which would let it hit about 60 mph on the short straight sections of the track. Left hand drive, with the pedal gears intact on the right. At that point, what's the difference? Is a different motor, or could it have been a DD hub driving the...
by donn
Dec 17 2020 9:40am
Forum: E-Bike General Discussion
Topic: LiPO PSA - How Not to Bun Your House Down
Replies: 15
Views: 527

Re: LiPO PSA - How Not to Bun Your House Down

I guess the bright side is, you got outside, and with your pants on.
by donn
Dec 07 2020 12:20am
Forum: E-Bike General Discussion
Topic: 40mph commuter: slack hardtail on 29" tire or steep full-suspension on 26"?
Replies: 59
Views: 1335

Re: 40mph commuter: slack hardtail on 29" tire or steep full-suspension on 26"?

Moto! I sold my Moto Guzzi, but then I'm happy going a lot slower. At much higher speed, it's like the man said, you're learning from the motorcycle designers how to ... do what? Build a motorcycle, is what. Mine unfortunately weighed so much that in my decrepit old age I couldn't reliably right it ...
by donn
Dec 05 2020 2:23pm
Forum: E-Bike General Discussion
Topic: 40mph commuter: slack hardtail on 29" tire or steep full-suspension on 26"?
Replies: 59
Views: 1335

Re: 40mph commuter: slack hardtail on 29" tire or steep full-suspension on 26"?

i dont see any recumbents but when i was working on my boat in dry dock i did talk with a guy who has one and the last picture in the scorpion thread shows a concrete switchback ramp and he said he will fall over if he doesnt take his feet off the pedals when going through there. Yeah, that's chall...
by donn
Nov 25 2020 1:46pm
Forum: E-Bike General Discussion
Topic: Hill climbing commuter build
Replies: 23
Views: 921

Re: Hill climbing commuter build

It's important not to base consequential decisions on overly general rules.
by donn
Nov 23 2020 3:08pm
Forum: E-Bike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 40
Views: 1442

Re: Your thoughts on frames and riding positions?

Well, I've wondered. I mean, lawn chair on wheels, I get that. Bed on wheels, sounds good - if you didn't have to look where you're going. I see there's a headrest. I don't know. The seat for me is essentially a little hammock. Like my Ryan Vanguard, or the 1980 Avatar 2000. https://bicycleman.com/w...
by donn
Nov 18 2020 8:09pm
Forum: E-Bike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 40
Views: 1442

Re: Your thoughts on frames and riding positions?

As it happens, I'd have to be awful hungry to eat a hamburger, but peanut butter and pickle sandwich would be a treat from my childhood.
by donn
Nov 18 2020 1:07pm
Forum: E-Bike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 40
Views: 1442

Re: Your thoughts on frames and riding positions?

Imagine this - if car racing organizations had banned Mustangs, Porsches, Corvettes, etc. I guess it's hard for me to imagine in a useful way. I don't know, did people use those cars in organized races? Who cares? Well, here I am riding recumbents, so maybe I'm the exception that proves the rule. B...