Search found 1314 matches

by 2old
May 09 2021 1:27pm
Forum: EBike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1690
Views: 227872

Re: 2 Speed Xiongda hubmotor

The 15 mm, as you may or not know, is the size axle. Hopefully the motor has the same arrangement.
by 2old
Apr 27 2021 11:32am
Forum: EBike Non-hub Motor Drives
Topic: Best Mid-drive Motors in 2021
Replies: 12
Views: 1055

Re: Best Mid-drive Motors in 2021

Easiest solution might be an M1Sportechnik ($10,000 or so) which can achieve 45 mph pretty easily AFAIK.
by 2old
Apr 27 2021 11:16am
Forum: EBike Technical
Topic: Trying to be safe with a 5000w Enduro frame DIY build
Replies: 4
Views: 210

Re: Trying to be safe with a 5000w Enduro frame DIY build

I feel safe up to 35 mph on the street with Schalwbe Marathon tires, and have never had a flat, but any faster wouldn't. If you want the extra power for hills only, you might consider adding a front motor. I did that to a 1000w DD and the extra power for acceleration was considerable. Most (all) end...
by 2old
Apr 24 2021 9:48am
Forum: EBike General Discussion
Topic: Any suggestions on a 52v battery.
Replies: 5
Views: 486

Re: Any suggestions on a 52v battery.

Many battery sellers are just repackaging a Chinese or other unit, so the most important aspect (to me) is the supplier (since the cells could be the ones you want, but fakes). I've had good success with Luna, but em3ev and Grin seem to have mostly good reports too. Otherwise, it's a minefield out t...
by 2old
Apr 22 2021 1:46pm
Forum: EBike General Discussion
Topic: Putting together a starter e-handcycle, know nothing about bikes
Replies: 16
Views: 496

Re: Putting together a starter e-handcycle, know nothing about bikes

Sorry; SS = single speed Take a look at ebikeling for a front wheel system. I purchased one and it was well worth the cost. Also, with the Grin system referenced above you could have regen braking. (read about at ebikesca; may learn from their tutorials too, plus they're really helpful if you have q...
by 2old
Apr 22 2021 9:26am
Forum: EBike General Discussion
Topic: Putting together a starter e-handcycle, know nothing about bikes
Replies: 16
Views: 496

Re: Putting together a starter e-handcycle, know nothing about bikes

I saw a system at Interbike several years ago that was a handcycle with mid-drive; the organization was associated with a veteran's group (you could try to locate them, but that's all I remember). It would seem feasible to try to locate them or fabricate something with a BBS02 (10 pounds) and 52V, 6...
by 2old
Apr 22 2021 9:11am
Forum: Bike Mechanical & Structural
Topic: Working rear triangle to accommodate different hub widths. How much is too much
Replies: 11
Views: 500

Re: Working rear triangle to accommodate different hub widths. How much is too much

About five years ago when I could only locate rear hub motors with 135 mm axles and wanted to convert a Mongoose Dolomite, the rear was squeezed from 190 or so to 135 without incident. Of course, it was necessary to make spacers for the disc brake and freewheel.
by 2old
Apr 20 2021 12:30pm
Forum: EBike Non-hub Motor Drives
Topic: Mid Drives Working With Coaster Brakes
Replies: 24
Views: 513

Re: Mid Drives Working With Coaster Brakes

You should be able to attach a caliper rear brake (obviously with a new wheel) and have your choice of mid-drives. I've had excellent service from BBS02's.
by 2old
Apr 07 2021 8:38am
Forum: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8593
Views: 945361

Re: New "TSDZ2 Torque Sensor Central Motor"

Looks like individual is in socal where the riding season never ends. If the problem is offset, just do what I did with my first BBS02 conversion and operate the rear with three gears 11-17-28 at the end of the cassette. It was all that was necessary with the motor and shifted fine. It was spaced 8-...
by 2old
Apr 04 2021 8:30am
Forum: Bike Mechanical & Structural
Topic: 1kW Front Hub Motor on Cheap Chinese Folding Bike
Replies: 25
Views: 617

Re: 1kW Front Hub Motor on Cheap Chinese Folding Bike

Don't know if this was mentioned, but bicycle wheels are defined by the outside diameter of the wheel plus tire, while motorcycle by the diameter of the rim. The first thing I would do is purchase a 20" rim with 36 holes. This will make your task much easier. The wheel, even radially laced, whi...
by 2old
Mar 26 2021 11:11am
Forum: EBike General Discussion
Topic: The end of BionX?
Replies: 198
Views: 46773

Re: The end of BionX?

The 500D was dynamite IMO; rode it in several different configurations, including ELBY which still features it a couple of years after it was discontinued. Guess they know something, since they must need to be able to repair them for warranty.
by 2old
Mar 17 2021 9:45am
Forum: Bike Mechanical & Structural
Topic: Chain skipping 9th gear rear hub motor
Replies: 16
Views: 507

Re: Chain skipping 9th gear rear hub motor

Hate to have you revert to the 1800's, but if nothing else fixes your derailleur problem (might try lubing the cable housing), a friction shifter may work.
by 2old
Mar 16 2021 9:38am
Forum: EBike General Discussion
Topic: Stop-a-flat tubes
Replies: 19
Views: 645

Re: Stop-a-flat tubes

Guess I'm living the dream in socal where I've had only two or so flats in the past year riding four times a week (discovered the next day, not hindering the ride). However when my friends ride in the desert, everybody must have Stan's or equivalent tubeless systems to be allowed in the group so tha...
by 2old
Mar 11 2021 11:12am
Forum: EBike Build Threads
Topic: Surly Instigator: Steel frame HT + Bafang BBS02 Mid-drive
Replies: 29
Views: 1635

Re: Surly Instigator: Steel frame HT + Bafang BBS02 Mid-drive

Sorry, I left out an "S"; actually the seatpost clamp is by SKS which has several products that I've used for mounting other items like controllers.
by 2old
Mar 09 2021 10:41am
Forum: Bike Mechanical & Structural
Topic: Chain skipping 9th gear rear hub motor
Replies: 16
Views: 507

Re: Chain skipping 9th gear rear hub motor

The chain seems pretty close to the frame and maybe with your weight on the bike contacts it. If I were you I would try spacing out the hub a mm or so (one of those "half washers they use on the front forks to accommodate "lawyer Lips"), and try it. Going to an eight speed probably wo...
by 2old
Mar 07 2021 7:19pm
Forum: EBike General Discussion
Topic: Charging Battery Through Output
Replies: 3
Views: 297

Re: Charging Battery Through Output

Thanks to both of you. I'll be careful.
by 2old
Mar 06 2021 3:34pm
Forum: EBike Build Threads
Topic: Surly Instigator: Steel frame HT + Bafang BBS02 Mid-drive
Replies: 29
Views: 1635

Re: Surly Instigator: Steel frame HT + Bafang BBS02 Mid-drive

Luna has a frame bag that has openings for the wires and is large enough that I was able to protect the battery from hitting the frame tubes on bumpy trails. Also SK (German company) has several systems that allow you to attach a water bottle cage to the seatpost (I've been using one successfully fo...
by 2old
Mar 06 2021 3:24pm
Forum: EBike General Discussion
Topic: Bought a few swytch kits and have questions about the batteries
Replies: 3
Views: 163

Re: Bought a few swytch kits and have questions about the batteries

It's well known that for most Lithium chemistry, charging to 80% (and not going below 20%) will increase battery life markedly. Probably the better battery provides enough power at 80% while the others need to start at 100%. It would be advisable, if you're going to charge to 100%, to do so just bef...
by 2old
Mar 06 2021 3:16pm
Forum: EBike General Discussion
Topic: RadPowerBike RadCity Commuter
Replies: 189
Views: 12097

Re: RadPowerBike RadCity Commuter

I think Rad just received a $150 million cash infusion (not their first AFAIK). There will be bean counters wanting immediate profits and finding ways to cut costs. There are plenty of studies proving that higher tire pressure doesn't always improve speed. It would be interesting to have you plot th...
by 2old
Mar 05 2021 7:51pm
Forum: EBike General Discussion
Topic: Charging Battery Through Output
Replies: 3
Views: 297

Charging Battery Through Output

I have a 36V battery that apparently has a problem with the "input" connector, that is there's no indication it's being charged. However, it can be charged through the "output" connector. Is this a problem?
by 2old
Mar 05 2021 6:07pm
Forum: EBike General Discussion
Topic: Best bang for the buck DD Rear Hub Kit
Replies: 62
Views: 2175

Re: Best bang for the buck DD Rear Hub Kit

Great roads in CA which is why we pay more taxes than other states. Don't want to become a hood ornament.
by 2old
Mar 05 2021 11:12am
Forum: EBike General Discussion
Topic: Best bang for the buck DD Rear Hub Kit
Replies: 62
Views: 2175

Re: Best bang for the buck DD Rear Hub Kit

I purchased a YESCOM kit, similat to the AW above, about six years ago (30 amp controller) and it's been a solid performer at 52V although the mileage isn't particularly high since I eschew street riding as much as possible these days. Only needed to tweak the wheel tension a couple of times during ...
by 2old
Mar 04 2021 11:08am
Forum: EBike General Discussion
Topic: Stores that sell Mac hub motor 8t
Replies: 2
Views: 161

Re: Stores that sell Mac hub motor 8t

Check EUNORAU.
by 2old
Feb 24 2021 12:07am
Forum: EBike General Discussion
Topic: MAC motor worth it?
Replies: 84
Views: 5046

Re: MAC motor worth it?

Eunorau used to sell a MAC (12T AIR), but it's not on their site now. They have brushless, geared, cassette motors (500w) listed, but don't specify the "T". Why isn't the MAC readily available? They still have this one showing (MAC 8t), but it appears to be part of a bundle - and that bun...