Search found 413 matches

by The Toecutter
Mar 26 2020 2:06pm
Forum: E-Bike General Discussion
Topic: Critique this performance velomobile idea
Replies: 188
Views: 29767

Re: Critique this performance velomobile idea

You chose Sempu because it's supposed to be the most responsive? I chose it because of spindle width. My current bottom bracket that my Suntour XCT Jr. crankset fits to is 117mm, and 115mm was the closest size I could find for an available torque sensing bottom bracket. 120mm would have been too wi...
by The Toecutter
Mar 23 2020 9:00pm
Forum: E-Bike General Discussion
Topic: Critique this performance velomobile idea
Replies: 188
Views: 29767

Re: Critique this performance velomobile idea

I got the basic pieces of the new body shell mounted last week. https://i.imgur.com/Qksrriu.jpg https://i.imgur.com/0FH6s8N.jpg https://i.imgur.com/dHxUa4c.jpg https://i.imgur.com/i52T3ND.jpg I still need to mount the tail, turtledeck, hood, windscreen, roof, rear wheel cowling, fenders, suspension ...
by The Toecutter
Mar 15 2020 10:37pm
Forum: E-Bike Technical
Topic: Question regarding torque sensor use with Cycle analyst
Replies: 6
Views: 171

Re: Question regarding torque sensor use with Cycle analyst

I got to it before I even read your post! According to the chart, if I have a 74V pack, my Cycle Analyst's maximum accessory current is 13.4 mA. Actually, it will be lower than that, since coming off of a full charge, the pack is likely to be closer to 85V, which would suggest 10 mA. My torque senso...
by The Toecutter
Mar 15 2020 10:18pm
Forum: E-Bike Technical
Topic: Question regarding torque sensor use with Cycle analyst
Replies: 6
Views: 171

Re: Question regarding torque sensor use with Cycle analyst

Use a suitable buck converter or a separate tiny battery to deliver a safely lower voltage. The Cycle Analyst has a connector with 5 input pins, 10V, Gnd, Dir, RPM, and Trq. I'm guessing then that I would take the connector on the Cycle Analyst side, connect it to a similar connector that has a wir...
by The Toecutter
Mar 15 2020 9:51pm
Forum: E-Bike Technical
Topic: Question regarding torque sensor use with Cycle analyst
Replies: 6
Views: 171

Question regarding torque sensor use with Cycle analyst

My Cycle Analyst V3.1 arrived. I read the user manual and on Page 34 it mentioned the following: "4. Using a torque sensor on a high voltage system: Even though the CA on its own can handle up to 150V, this voltage needs to be derated when accessories are plugged in which draw significant current. M...
by The Toecutter
Mar 06 2020 12:14am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

The direct drive hub world is in a sad state of affairs today. Indeed. If I had the equipment, I'd love to give making a really well-designed one a shot... Thinking of something like a Leafbike motor, but with 0.2 mm laminations, and less mass, perhaps around 7-10 lbs. With the right design, I thin...
by The Toecutter
Mar 04 2020 1:08pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

do you need regen braking, or reverse? if not, you could use the hubmotor outside the wheel, in the drivetrain (like rassy did, or one of the various other versions), or separately chained to the wheel (so not in the pedal drivetrain), and have a freewheel (or clutch) between the motor and the whee...
by The Toecutter
Mar 03 2020 5:14pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

I doubt you'll find it.. but i've pedaled home a few times w/o motor and can say in a 26" - 700C wheel, and super low friction Schwalbe Almotions, and can say i made the trip 3 miles home without dying.. :lol: My concern is that it may slow it down enough to negate the advantage of the body shell w...
by The Toecutter
Mar 02 2020 11:42pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

A 7-speed freewheel is sometimes a tight fit, depending on the frame, but I'm told the 6-speed mega range fits easily, and still works with 7-speed derailleur. I have 135mm dropouts. The salesperson at Leafbike told me a 7-speed cassette would fit, after I told them I planned to go with 9 speed. Gl...
by The Toecutter
Mar 01 2020 5:16pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Because of the coronavirus, my motor wasn't able to be built. They offered to send me a 4T wind 1500W version instead, 3mm phase wires pre-installed, no extra charge, and I took it. It arrived last Wednesday, and I was advised not to open the box for 2 weeks. I'll open the box when the 2 weeks has p...
by The Toecutter
Feb 11 2020 11:43pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Custom KMX recumbent trike with QS205
Replies: 93
Views: 8232

Re: Custom KMX recumbent trike with QS205

tonystark20 wrote:
Feb 10 2020 3:00pm
ASI BAC4000
How much does this controller weigh?

It can put out enough watts to power a car...
by The Toecutter
Feb 08 2020 8:35pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

I got a notification a bit over a week ago that my motor would have to be built. This gave me a chance to specify 3mm phase wires, with the consequence being that the protective spring could not be fit to cover the insulation of the wires bundled together through the center of the case. The motor ha...
by The Toecutter
Jan 26 2020 6:28pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Thank you for sharing that link. It will come in handy soon. Also, does anyone have figures for the hysteresis drag torque and eddy current drag torque for the Leafbike motors? I could not find these figures published anywhere, but it would be nice to calculate how much wattage I'll need to overcome...
by The Toecutter
Jan 23 2020 3:13pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

How difficult is it to change out the phase wires? Are there any guides or diagrams in this thread showing some of the process? I know there's pics located somewhere in this thread showing the motor case open, but I don't have the time to look through all of the pages to find it.
by The Toecutter
Jan 22 2020 10:33am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

One of the nice things about brushless motors is that they are very tolerant of a wide range of voltages. As far as how many amps to use, it all depends on how often you'll be using high amps. I feel the ideal temp is around 140F, but it is widely regarded to keep the motor safe by not exceeding 93...
by The Toecutter
Jan 18 2020 10:59pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

My Leafbike motor is now ordered. I requested 1000W version built into a 26" double-walled rim with 5T wind, 10K NTC thermistor, and cassette compatibility. Cost was $304.88 including shipping. I went with a cassette version instead of freewheel because replacement 11-34T freewheels are not made any...
by The Toecutter
Jan 18 2020 2:21pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

If you are getting the motor from leafbike, get ready to change the thermistor to a 10K. I like your setup, currently my front chainrings 30/39/50 but is to low for what I want at my cadence. Did you buy your ring set or build it? I was going to ask them to install it for me. One of the members her...
by The Toecutter
Jan 17 2020 10:35pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Car replacement E-bike that fits me
Replies: 45
Views: 5833

Re: Car replacement E-bike that fits me

Can be powered by either an electric motor alone OR with combined human power. CANNOT go faster than 28 MPH without applying human power. No more than 750 watts. This change in the law was recent. There used to be a speed limit of 20 mph without applying human power, but no power limit, the weight ...
by The Toecutter
Jan 17 2020 10:23pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Just to be clear, the 1000W version can reliably handle a 21s pack of Li Ion, correct? The salesperson at Leafbike recommended the 1500W version of this motor if I want to run it at more than 48V. I'm planning to get a 5T wind of the 1000W motor with cassette compatibility and a 10K NTC thermistor f...
by The Toecutter
Oct 21 2019 9:44pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Car replacement E-bike that fits me
Replies: 45
Views: 5833

Re: Car replacement E-bike that fits me

I agree, tried with a tape measure just not that accurate. have been shooting for no toe in or out. looks like its close now but can not let go it will start to shimmy after a few seconds. Thought about taking it to the tire store by me and see if they can check the aliment lol. You probably have a...
by The Toecutter
Oct 19 2019 6:16pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Car replacement E-bike that fits me
Replies: 45
Views: 5833

Re: Car replacement E-bike that fits me

So put the toe in back and added couple mm of toe in to it. but if I ride around 40km on a worn road it feels wild and I don't like that. The width from the edge of tire to edge of tire should be narrower in the front of the wheel than the back of the wheel by 1/16th of an inch. It sounds to me lik...
by The Toecutter
Oct 16 2019 2:54pm
Forum: E-Bike Build Threads / Photos & Video
Topic: E Velomobil
Replies: 29
Views: 2716

Re: E Velomobil

This is a great looking project.

Is it rideable yet?
by The Toecutter
Oct 16 2019 4:39am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217639

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Does this same 235mm spoke length apply to the 1000W Leafbike motor?
by The Toecutter
Sep 25 2019 2:55am
Forum: E-Bike Build Threads / Photos & Video
Topic: ICE Sprint 26 with BBSHD build. (recumbent trike)
Replies: 23
Views: 2533

Re: ICE Sprint 26 with BBSHD build. (recumbent trike)

Right now the trike has a 36t chainring and a 11-32 cassette. I see that Sunrace sells a cheap 11-40 cassette that fits and i have the old chainset with a 38t and a 52t ring on it. I can for fairly cheap convert to 38-52 chainring and 11-40 cassette. I can also convert to 42t chainring and a 11-46 ...
by The Toecutter
Sep 20 2019 1:24pm
Forum: E-Bike Build Threads / Photos & Video
Topic: ICE Sprint 26 with BBSHD build. (recumbent trike)
Replies: 23
Views: 2533

Re: ICE Sprint 26 with BBSHD build. (recumbent trike)

I was on a 35km ride yesterday and one thing i instantly missed was more range on my gears. If im to climb by my own power i need a lower gear and if im to speed down a long hill i would need a higher gear. Anyone have any good options to recommend? I see five potential options that may or may not ...