Search found 1354 matches

by Balmorhea
Nov 18 2020 4:15am
Forum: Battery Technology
Topic: Mistory cells?
Replies: 36
Views: 993

Re: Mistory cells?

This is so freaking annoying the largest file you can upload is 512 megabytes and the smallest picture I have is 3.5gig so I'm not sure when the computer software was written for this website possibly 1981? Because I don't know of any modern day picture that's only 512 megabytes smh..... Looks like...
by Balmorhea
Nov 18 2020 4:13am
Forum: EBike General Discussion
Topic: Heavy fat ebike with hub motor, safe to do jumps?
Replies: 17
Views: 589

Re: Heavy fat ebike with hub motor, safe to do jumps?

Jumping a bike is foolishness, but with that out of the way, if you can jump a pedal bike without wrecking it, this one should be about the same.
by Balmorhea
Nov 18 2020 3:39am
Forum: EBike Technical
Topic: Rim choice after cracks on direct drive 1000W Mxus XF40C
Replies: 10
Views: 306

Re: Rim choice after cracks on direct drive 1000W Mxus XF40C

Those nipps are for 13ga spokes. They're of no use to you. 13-14ga spokes use regular 14ga nipples. Whatever portion of the 13-14ga spoke is 13ga diminishes its elasticity, versus a straight 14ga spoke. If you're going to spend the extra for butted spokes, you'd be better off with 14-15ga double but...
by Balmorhea
Nov 18 2020 3:05am
Forum: EBike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 40
Views: 1537

Re: Your thoughts on frames and riding positions?

Also the reason they never made it in sports is because the racing organizations banned them ( and any other major aerodynamic aid ) because recumbents and superman bikes are too fast :lol: But... 'bents win all the major cycling events! Of the many major cycle manufacturers, the most reputable one...
by Balmorhea
Nov 17 2020 9:42pm
Forum: EBike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 40
Views: 1537

Re: Your thoughts on frames and riding positions?

neptronix wrote:
Nov 17 2020 8:20pm
Semi recumbent/CLWB is the master race of all bikes.
Clearly. That's why it has prevailed in the consumer marketplace and in cycle racing for such as long time. The wide adoption of CLWB bikes by military forces surely didn't hurt.
by Balmorhea
Nov 17 2020 3:59pm
Forum: Motor Technology
Topic: Efficiency of stator oriented control
Replies: 11
Views: 462

Re: Efficiency of stator oriented control

I choose low maintenance for my own bikes, meaning direct drive hub motors without regen. So I sacrifice a little efficiency on both counts, in favor of reliability. How do you figure regen to negatively affect reliability of a system? Reversing reaction torque at the axle tends to loosen threaded ...
by Balmorhea
Nov 17 2020 3:53pm
Forum: EBike Technical
Topic: Rim choice after cracks on direct drive 1000W Mxus XF40C
Replies: 10
Views: 306

Re: Rim choice after cracks on direct drive 1000W Mxus XF40C

Andra 40 is only 25mm inside/31mm outside, which is fine for 35-40mm tires. These days the trend is to use a wide rim to maintain tire stability at lower air pressures. Are you of this. I looked at many french website and all say that 25mm rims needs at least 42mm tire. That's not consistent with c...
by Balmorhea
Nov 15 2020 4:17pm
Forum: EBike General Discussion
Topic: Fork issues, motor recommendations, and other newbie questions/issues
Replies: 115
Views: 3540

Re: Fork issues, motor recommendations, and other newbie questions/issues

Kemosabe70 wrote:
Nov 15 2020 2:54pm
Hey people here’s a banana for scale.
That gives me a good sense of how big the socks are.
by Balmorhea
Nov 15 2020 4:01pm
Forum: EBike General Discussion
Topic: torque arms for using regen?
Replies: 49
Views: 1624

Re: torque arms for using regen?

the fear of slamming on the rear brake and having the wheel come off the back is real. so you think just a screw (m5?) going through a slot in the torque arm and into a threaded hole in the dropout is adequate? seems what youre saying just want to confirm. That possibility is no different for an e-...
by Balmorhea
Nov 15 2020 2:47pm
Forum: EBike General Discussion
Topic: torque arms for using regen?
Replies: 49
Views: 1624

Re: torque arms for using regen?

It would probably work fine without the pin, as long as it's most/all of the way into the dropout slot. The pin will prevent you from adjusting chain tension. If you want a second torque transmitting feature, make it a slot, with a threaded hole in the dropout for a screw.
by Balmorhea
Nov 15 2020 12:58pm
Forum: EBike Technical
Topic: Rim choice after cracks on direct drive 1000W Mxus XF40C
Replies: 10
Views: 306

Re: Rim choice after cracks on direct drive 1000W Mxus XF40C

thank you for the advise on spokes my max tire width is 40 so i can't go for more than 23mm internal width of rim. So andra 321 could be the option Andra 35 is a little heavier and stronger, if that matters to you. Also, Andra 40 is only 25mm inside/31mm outside, which is fine for 35-40mm tires. Th...
by Balmorhea
Nov 15 2020 4:09am
Forum: EBike Technical
Topic: Rim choice after cracks on direct drive 1000W Mxus XF40C
Replies: 10
Views: 306

Re: Rim choice after cracks on direct drive 1000W Mxus XF40C

The Ryde Andra 40 is a good strong rim. Don't use thick spokes like the ones in the photo; they're probably why your rim cracked. Use regular 2.0mm (14ga) spokes, with washers under the heads if necessary to prevent pull-through.
by Balmorhea
Nov 14 2020 8:51pm
Forum: EBike General Discussion
Topic: Amy advantage to mid drive on a single speed vs geared hub motor
Replies: 2
Views: 272

Re: Amy advantage to mid drive on a single speed vs geared hub motor

No. Single speed with a mid drive motor gives you all of the drawbacks of a mid drive, without the main advantages. The single advantage I can think of is weight distribution versus a rear hub motor, but that's not a big factor. If reliability matters to you, stay well away from TSDZ2. For a winter ...
by Balmorhea
Nov 14 2020 8:49pm
Forum: EBike Build Threads
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 319
Views: 36599

Re: High performance & durability Cannondale Semi Recumbent

Headshok frame bores are the same diameter as One Point Five. For a tapered fork, you use an external One Point Five headset cup on the bottom, and a 1.5" to 1-1/8" reducer cup on top.
by Balmorhea
Nov 14 2020 8:35pm
Forum: EBike General Discussion
Topic: What is the point of a 3T, 4T, 5T winding if torque per amp is the same?
Replies: 28
Views: 1103

Re: What is the point of a 3T, 4T, 5T winding if torque per amp is the same?

would a lower turn motor be able to handle more current (battery and phase) before overheating? No, the amount of copper and iron and the motor thermal shedding design dictate that. Low turn counts have lower resistance, thus less heat at any given current. But they also make less torque at any giv...
by Balmorhea
Nov 14 2020 8:33pm
Forum: EBike General Discussion
Topic: What is the point of a 3T, 4T, 5T winding if torque per amp is the same?
Replies: 28
Views: 1103

Re: What is the point of a 3T, 4T, 5T winding if torque per amp is the same?

Hub motor Kv is meant to match wheel size. There are no other reasons, but it does seem hard to understand for many. It's also for limiting top speed to less than the available power would otherwise achieve. This can be key for staying legal/under the radar/courteous, depending on where you ride. I...
by Balmorhea
Nov 14 2020 4:53am
Forum: EBike Technical
Topic: MAC speed sensor adding
Replies: 20
Views: 567

Re: MAC speed sensor adding

If I bought a motor that costs that much at least I would expect that it can provide a speed signal while coasting without such awkward stopgap solutions. Why? That's not an intrinsic function of a motor with a one-way clutch. This is a non-problem, but pedal cyclists figured it out generations ago...
by Balmorhea
Nov 14 2020 4:42am
Forum: General Discussion
Topic: Using a trunk bike rack for heavy e-bike?
Replies: 8
Views: 685

Re: Using a trunk bike rack for heavy e-bike?

I have messed up a couple of cars with trunk racks. I wouldn't bother with them again.

Best remedy is to ditch the car. They suck and they make those who use them suck.
by Balmorhea
Nov 14 2020 4:38am
Forum: Motor Technology
Topic: Efficiency of stator oriented control
Replies: 11
Views: 462

Re: Efficiency of stator oriented control

Not sure what you mean by "personally," but there are definitely routes where it is possible to recover significant amounts of energy from regen... There are more situations where regen isn't worth the energy lost by not having freewheeling. Most people live in areas that became populated...
by Balmorhea
Nov 14 2020 4:00am
Forum: EBike General Discussion
Topic: Fully 3D Printed DIY electric car
Replies: 52
Views: 2363

Re: Fully 3D Printed DIY electric car

3D printing is the hot glue gun of early 21st century males. Like late 20th century females with their hot glue guns, once they grasp the basics of the technology, they stop thinking about whether it's appropriate to the job at hand. They use it in whatever situation, regardless. In both cases, thes...
by Balmorhea
Nov 14 2020 3:53am
Forum: EBike Technical
Topic: Trying to ID an ebike motor and its controller
Replies: 7
Views: 673

Re: Trying to ID an ebike motor and its controller

The three thickest wires into the motor, and out of the controller, are for powering the motor stator phases. They're usually blue, yellow, and green. There are usually five small wires in addition to these: +5V for the Hall sensors, GND, and the three signal wires for the phase Hall sensor signals....
by Balmorhea
Nov 14 2020 3:26am
Forum: EBike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 40
Views: 1537

Re: Your thoughts on frames and riding positions?

Day 6 Dream 8 won't help with ride quality, unless that's about picking up a hot new octagenarian ride with your sweet geriatric bike. A ride position like that prevents you from standing up on the pedals when things get rough. And standing up is the best strategy when things get rough. I find my ow...
by Balmorhea
Nov 13 2020 9:11pm
Forum: EBike General Discussion
Topic: Anyone ran rhinodillos bike tire flat protection strips?
Replies: 5
Views: 207

Re: Anyone ran rhinodillos bike tire flat protection strips?

Maybe if you had a particularly thin inner tire RTV-ed to something like a schwalbe marathon plus.. one would have just enough rubber to avoid the maximum length i've seen a goathead - 11mm. I'd go for talcum powder over RTV. If you're just looking for some extra thickness, wrapping a sliced-open t...
by Balmorhea
Nov 13 2020 9:06pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1927
Views: 250036

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

I'm back to correct more bad data, and be a little more confused than before. To review: That motor-wheel combo [6T 1500W Leaf, 29" wheel] has a free speed close to 40 mph, top speed of about 28 without help at the pedals. Achieving only 70% of no load speed is a sure indication that the motor ...
by Balmorhea
Nov 13 2020 1:23pm
Forum: EBike General Discussion
Topic: Anyone ran rhinodillos bike tire flat protection strips?
Replies: 5
Views: 207

Re: Anyone ran rhinodillos bike tire flat protection strips?

..i've ran 'stop flats', but they actually wore into my tube and caused a flat themselves, rendering them less than useless. But the rhinodillos have soft tips that supposedly prevent this from happening. All the different strips have edges, and the edges will cause punctures if the ends don't do i...