Search found 1534 matches

by Warren
Sep 27 2022 6:29pm
Forum: EBike Build Threads
Topic: A test mule with virtual pivot steering
Replies: 2
Views: 75

Re: A test mule with virtual pivot steering

I would love it if you did a video of the steering mechanism. So does the caster actually vary with displacement from center, by the upper and lower arms following different arcs?
by Warren
Sep 26 2022 1:14pm
Forum: Bike Mechanical & Structural
Topic: Fairings, CG/CP, pneumatic trail and other handling esoterica
Replies: 6
Views: 131

Re: Fairings, CG/CP, pneumatic trail and other handling esoterica

Yeah. As much as I love efficiency, I opted for more battery on a bare bike, both times. Riding in close proximity to trucks and SUVs is scary enough, without dealing with gusts.
by Warren
Sep 24 2022 3:00pm
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

Yep ... I'm familiar with his work. Mostly thru keeping an eye on the Craig Vetter Fuel Economy Challenge over the years. You probably know of Alan Smith from the Vetter Challenge too. This is a pdf of an article about his current bike, an Energica streamliner. https://mail.google.com/mail/u/0?ui=2...
by Warren
Sep 24 2022 10:16am
Forum: Bike Mechanical & Structural
Topic: streamline fairings?
Replies: 24
Views: 446

Re: streamline fairings?

BalorNG wrote:
Sep 24 2022 10:12am
How that is a very interesting solution that is must be effective *and* easy to fabricate without going for composites and hence dealing with PITA of CNCed plugs...
Yup. Steve is pretty smart.

https://mrbill.homeip.net/albums/powerP ... tml#anchor
by Warren
Sep 24 2022 9:58am
Forum: Bike Mechanical & Structural
Topic: streamline fairings?
Replies: 24
Views: 446

Re: streamline fairings?

Even without electric assist, a really strong rider in a streamliner can make conventional bikes look really bad. Back in 2018 BC (Before COVID), the Trans America Bicycle Race was won by Swiss rider Marcel Graber, riding a 38 pound velomobile. He was so far ahead of the pack, he spent the night in ...
by Warren
Sep 24 2022 9:32am
Forum: Bike Mechanical & Structural
Topic: streamline fairings?
Replies: 24
Views: 446

Re: streamline fairings?

His final statement in the video does reinforce common recumbent knowledge. Yup. Aerodynamics of recumbents are clearly superior, as is comfort, and crash safety. I ran a Zzipper for one year. Sadly, my pitiful power output meant, what was gained on the flats, was lost on the climbs around here, es...
by Warren
Sep 23 2022 8:59am
Forum: Bike Mechanical & Structural
Topic: streamline fairings?
Replies: 24
Views: 446

Re: streamline fairings?

by Warren
Sep 21 2022 12:30pm
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

SaladFish wrote:
Sep 21 2022 6:51am
I didn't know Kraig Shultz tried to market a feet foreword motorcycle.
He is/was also involved with a Portuguese group on a trike project. That seemed very promising, then COVID, and then Ukraine. :(

https://tugainnovations.com/
by Warren
Sep 20 2022 11:04am
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

The shapes, overall layout aren't much different to the human powered streamliners I was creating, riding, racing 20 ~ 30 years earlier. Do it to satisfy your own personal needs and curiosity not to sell to others. Something to consider with these projects is the attention they create. People will ...
by Warren
Sep 20 2022 8:47am
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

Kraig Shultz was hoping to do something similar, some years ago. Not enough interest.

http://www.schultzengineering.us/delta-x2-1.htm

To paraphrase you: You can drag a horse's ass to water, but it is the wrong end for drinking. :wink:
by Warren
Sep 19 2022 9:52am
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

Good find but Lightning Motorcycle is far from "dodgy" I talked to Richard Hatfield for perhaps a half hour, at the 2010 VIR TTXGP. He seemed like a very pleasant, and knowledgeable guy. His "flying banana" was clearly the fastest bike there. Lightning has several speed records,...
by Warren
Sep 18 2022 2:08pm
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

The very dodgy Lightning Motorcycle company claims to be working on a production streamliner. From the video, it seems this prototype is based on a scooter. https://youtu.be/4Sm9znxelrU This modified scooter looks pretty sweet. https://www.nestofdragons.net/my-electric-vehicles/carbon-funbike/ https...
by Warren
Sep 17 2022 3:47pm
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

The life lesson here : Being technically possible verses market acceptable are two different problems to solve. A hard concept to come to terms with. Oh, yeah. I was into recumbent bikes since the 1980s, when commercial ones were very rare. I saw the rise, and almost complete disappearance of, recu...
by Warren
Sep 17 2022 10:21am
Forum: EScooters/EMotorcycles
Topic: Converting scooter to recumbent and to electric streamliner
Replies: 29
Views: 689

Re: Converting scooter to recumbent and to electric streamliner

I had this idea recently. If I could convert a scooter frame to a recumbent, I could have a lowracer seating position, space for two riders and fit inside of a streamlined fairing. The British recumbent motorcycle guru, Royce Creasy, has finally realized our species is brain dead, and about to go e...
by Warren
Sep 12 2022 9:08am
Forum: EBike General Discussion
Topic: 30mph Noped-Looking for feedback
Replies: 3
Views: 315

Re: 30-35 mph Noped-Looking for feedback

I feel like a hub drive wouldn’t be ideal for going that fast up a 20% grade. If it was me I’d get a mid drive or some sort of mechanical advantage. Kelly controllers probably have something that can handle 6k watts or look into EV car controllers. It doesn't matter whether it is a hub motor, or a ...
by Warren
Aug 31 2022 8:27pm
Forum: General Discussion
Topic: New York’s proposed e-bike rebate could slash electric bike and scooter prices by 50%
Replies: 5
Views: 196

Re: New York’s proposed e-bike rebate could slash electric bike and scooter prices by 50%

If a large majority of voters owned slaves, slavery would still be legal. But that wouldn't make it any more acceptable. That's where we are with cars now. Even those who use them know it's wrong, but will defend the practice anyway because they're selfish and unethical. And yes, it hurts to acknow...
by Warren
Aug 29 2022 10:54pm
Forum: EBike General Discussion
Topic: Recommendations for mirrors?
Replies: 34
Views: 948

Re: Recommendations for mirrors?

If you were riding bikes in the sixties, then hats off to you for still being flexible enough to turn around without dismounting. Except when I'm in very noisy surroundings like freeway intersections, I can usually hear stuff behind me before it's close enough to be a concern. Yes. I was riding my ...
by Warren
Aug 29 2022 5:41pm
Forum: EBike General Discussion
Topic: Recommendations for mirrors?
Replies: 34
Views: 948

Re: Recommendations for mirrors?

If you ride a bike instead of a chair, you can easily turn around for a look. I ride upright bikes, as well as recumbents. I can turn around just fine on my recumbent. I was riding bikes before you were born. When I was young and foolish, we didn't use mirrors, or helmets. As an adult I started usi...
by Warren
Aug 29 2022 8:30am
Forum: EBike General Discussion
Topic: Recommendations for mirrors?
Replies: 34
Views: 948

Re: Recommendations for mirrors?

Chalo wrote:
Aug 27 2022 10:38pm
Helmet mirror

Glasses mirror

Or just turn your head around to have a look, if it doesn't hurt your neck.
Yup.

Yup.

Nope. This is part of stupid "I'm too cool to use a mirror" bicycle culture that will get you killed, like riding three abreast.
by Warren
Aug 28 2022 10:41am
Forum: EBike Non-hub Motor Drives
Topic: Does mid-drive really need a freewheel?
Replies: 20
Views: 2111

Re: Does mid-drive really need a freewheel?

You don't have to have a freewheel...but if something happens (pants caught in chainwheel, etc) and hte motor continues driving it with enough torque, you could get dragged off the bike or worse if your pants don't tear first. That's true whether or not the crank freewheels. If the chainring won't ...
by Warren
Aug 28 2022 10:35am
Forum: EBike Non-hub Motor Drives
Topic: Does mid-drive really need a freewheel?
Replies: 20
Views: 2111

Re: Does mid-drive really need a freewheel?

Timelord wrote:
Jan 20 2015 12:03am
So can mid-drive veterans tell me whether this is feasible, or is a freewheeling crank absolutely essential?
Freewheeling cranks are for those who really want a scooter. I did 30K miles on mine. Pedaled every one, except when coasting unpowered.
by Warren
Aug 20 2022 9:41am
Forum: Large EV General Discussion
Topic: Chevy Bolt first drive
Replies: 275
Views: 44694

Re: Chevy Bolt first drive

On the 18th, I ran a Torque Pro log long enough to get 23 good scans of all 96 cell groups. I averaged the 23 readings for each cell group, and looked at the actual numbers for highest, lowest, average, and normally lowest cell groups. The average cell group voltage was 4.020V...seen as last bar on ...