Search found 588 matches

by donn
Sep 24 2020 4:38pm
Forum: E-Bike General Discussion
Topic: a bike for my wife
Replies: 16
Views: 748

Re: a bike for my wife

I don't know anything about the specific models, but it's probably worth mentioning that bicycles have more or less the same fit issues whether they have motors or not. One that offers a more pleasant ride for her size and proportions, might make a bigger difference than battery integrated into the ...
by donn
Sep 21 2020 3:06am
Forum: E-Bike Technical
Topic: Is regenerative braking really worth anything?
Replies: 91
Views: 1851

Re: Is regenerative braking really worth anything?

I don't believe it because I can't envision a bike ride where I am hitting the brakes enough to recover 17% Suit yourself. I've never seen 17%, so maybe I shouldn't believe it either. Lies! How can he think he will get away with it!? [ for the humor impaired, that was written in jest. ] So, actuall...
by donn
Sep 19 2020 6:52pm
Forum: E-Bike Technical
Topic: Is regenerative braking really worth anything?
Replies: 91
Views: 1851

Re: Is regenerative braking really worth anything?

I saw some designs on the forum using small rc servo to engage the motor; I’ll rather go along this line, or add lever like for the fork lock. Interesting. I sometimes wonder why this isn't a feature with hub motors. The "have your cake and eat it, too" lever that you could push to turn a MAC into ...
by donn
Sep 19 2020 3:06am
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 33
Views: 818

Re: Is DIY dying?

that's the Aden sports LH drive you elude to;).. search this forum you will find some video etc.. Yes, indeed, thank you. I'm glad to see they're still at it. One of the interesting characteristics of this design seems to be that you can choose from several ratios, by selecting from different rack ...
by donn
Sep 18 2020 4:19pm
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 33
Views: 818

Re: Is DIY dying?

No, not at all, I just happened across it this morning somewhere else. My DIY angle is that I'd rather ride a recumbent bicycle. Not real interested in PAS, either, for that matter, but I guess that's an anti-DIY aspect of this solution - if you must use their controller, you're stuck with whatever ...
by donn
Sep 18 2020 2:07pm
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 33
Views: 818

Re: Is DIY dying?

Here's one that looks as trivial to install as anything I've seen and weighs under 6 lbs. Kind of spendy, but not all DIY is low budget. https://newatlas.com/bicycles/elevate-mountain-bike-motor/ It comes with a special rear disk brake, with I think an extra geared disk kind of like a chainring. The...
by donn
Sep 17 2020 7:21pm
Forum: E-Bike General Discussion
Topic: 52 volt batteries proceed with caution
Replies: 26
Views: 751

Re: 52 volt batteries proceed with caution

Inasmuch as what he's saying makes any sense, he's talking strictly about use with Bafang BBS02 and possibly BBSHD, which according to him derate 52V input so you get the same power as 48V. Someone who sells a 52V battery pack for one of these two motors , and 2. claims that it will deliver more pow...
by donn
Sep 17 2020 11:49am
Forum: E-Bike General Discussion
Topic: 52 volt batteries proceed with caution
Replies: 26
Views: 751

Re: 52 volt batteries proceed with caution

Bafang mid-drives probably don't have much tolerance for voltages above 48. In a mid-drive ... well ... I don't know of a single reseller of mid-drive motors, EMP excepted that doesn't offer a 52V option. So Bafang mid-drives probably do have plenty of tolerance for voltages above 48, right? Not th...
by donn
Sep 17 2020 9:43am
Forum: E-Bike General Discussion
Topic: 52 volt batteries proceed with caution
Replies: 26
Views: 751

Re: 52 volt batteries proceed with caution

Right, the confusion that seems to cast doubt on 52V packs per se, when the problem is only with these particular Hailong cases, needed to be cleared up. The speculation about voltage limits in Bafang crank drives, though, seems wrong - Luna and bafangusadirect seem to feel both the BBS02 and BBSHD ...
by donn
Sep 16 2020 8:49pm
Forum: E-Bike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1604
Views: 213666

Re: 2 Speed Xiongda hubmotor

He may have really meant something more like "is this a good idea", when he asked if this was "possible." Which is a very different question, and one that comes up every once in a while around here, but unfortunately I have no links. Would the interesting thing about this motor be, that you could pu...
by donn
Sep 15 2020 9:41pm
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 33
Views: 818

Re: Is DIY dying?

A 48v/52v mid drive with a battery in the 15ah range and torque sensing (that can be bolted directly to most bikes) that weighs in the neighborhood of 10-12 pounds for everything would be the holy grail for me. I don't see that happening any time soon though. Not when the battery leaves you only 0-...
by donn
Sep 15 2020 5:03pm
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 33
Views: 818

Re: Is DIY dying?

Are we going to see lighter, more powerful motors and batteries aimed at the DIY market? Or will DIY fade away as mass produced ebikes get more powerful and cheaper? These are not alternatives to each other. "More powerful" is meaningful to a lot of DIY types here, but only because this is the home...
by donn
Sep 14 2020 11:13pm
Forum: E-Bike Technical
Topic: e-Tricycle for adults
Replies: 48
Views: 599

Re: e-Tricycle for adults

learn to ride an entirely new type of vehicle That seems to me like the least of your worries. I gather she's in on this, and it really depends on what she thinks she'll like, but with tricycles there really isn't much to learn, is there? If she's game, she'll be fine. Nor would I worry about traff...
by donn
Sep 14 2020 11:00pm
Forum: E-Bike Technical
Topic: Is regenerative braking really worth anything?
Replies: 91
Views: 1851

Re: Is regenerative braking really worth anything?

Exactly, If you are live or trek through very mountainous regions then you might want to consider it, but for the remaining 95% of us it is meaningless. No, you're way off, on the "very mountainous" and the 95%. Why is it so urgent to discount regen, that you'll make a fool out of yourself to do it...
by donn
Sep 14 2020 7:53pm
Forum: E-Bike Technical
Topic: e-Tricycle for adults
Replies: 48
Views: 599

Re: e-Tricycle for adults

I'm a recumbent rider too, and if I ever wanted to ride a tricycle I'd sure look into the Hase options first. They've been doing it a long time and have a very good reputation. I sure wouldn't go for the above seat steering option, though. I've had a chance to compare above and under steering on the...
by donn
Sep 14 2020 3:16pm
Forum: E-Bike Technical
Topic: Hmmmm, regen
Replies: 4
Views: 127

Re: Hmmmm, regen

Has the regen EBS force level been set to an unusually high level?
by donn
Sep 14 2020 3:12pm
Forum: E-Bike Technical
Topic: Is regenerative braking really worth anything?
Replies: 91
Views: 1851

Re: Is regenerative braking really worth anything?

According to my CA I'm getting 14-16% back from regen, but it's very steep here, next to no flat ground. That's really 12 to 14%, if you discount CA regen, and I'm pretty sure you should. It's overstated, though not "grossly". The problem is that they divide the regen watts by the net watts instead...
by donn
Sep 12 2020 12:10pm
Forum: E-Bike General Discussion
Topic: Hi just to make sure!! voltages, amps and watts
Replies: 6
Views: 204

Re: Hi just to make sure!! voltages, amps and watts

Not sure I'm buying that one. Mostly not sure a half an amp difference is enough to feel, or for the motor to care about in terms of time to overheat. It may be true though, that a big controller wastes less amps into heat, than a tiny one running full out or something, causing that too small to ma...
by donn
Sep 11 2020 3:39pm
Forum: E-Bike General Discussion
Topic: Hi just to make sure!! voltages, amps and watts
Replies: 6
Views: 204

Re: Hi just to make sure!! voltages, amps and watts

Here's a 750W geared hub, using a grade of 7%, using 15A and 25A controllers for comparison. ... https://www.ebikes.ca/tools/simulator.html?motor=MG60_750&batt=B4816_GA&cont=C25&cont_b=C20&motor_b=MG60_750&batt_b=B4816_GA&bopen=true&axis=mph&grade=7&grade_b=7&hp_b=0&hp=0 OK, that makes sense to me....
by donn
Sep 10 2020 9:11am
Forum: E-Bike General Discussion
Topic: Assembling a safe fast ebike
Replies: 58
Views: 2860

Re: Assembling a safe fast ebike

When someone comes out with a low cost solution in a brake handle that has a brake light switch and can modulate a regen brake signal I'd give it a try, but then what to do about the lever for the second mechanical brake? Maybe some kind of trigger type for one finger to pull is the right answer fo...
by donn
Sep 08 2020 9:50am
Forum: E-Bike General Discussion
Topic: Question about a recumbent trike build
Replies: 13
Views: 532

Re: Question about a recumbent trike build

I see the occasional post from Catrike owners going to an electric motor, on the bentrideronline.com forum, and a lot of the time they go with a crank drive like BBS02 or TDSZ2. That isn't to say that proves anything - they're mighty attracted to the "Copenhagen Wheel", too. I just mention it to pos...
by donn
Sep 05 2020 1:47am
Forum: E-Bike General Discussion
Topic: Assembling a safe fast ebike
Replies: 58
Views: 2860

Re: Assembling a safe fast ebike

You could go with a recumbent e-bike, and that may help, but then there's the visibility issue. So perhaps a better compromise would be to go with a stretched frame - especially one that might lower your riding position a bit. Visibility doesn't need to be a big issue. You should have rear suspensi...
by donn
Aug 31 2020 9:11am
Forum: E-Bike General Discussion
Topic: What will it take to make ebikes, More mainstream ?
Replies: 173
Views: 15652

Re: What will it take to make ebikes, More mainstream ?

Though to be strictly accurate, that doesn't tell us that they're now mainstream. A change from 1% to 2% is huge for the market, but isn't a huge market.
by donn
Aug 29 2020 9:27am
Forum: E-Bike General Discussion
Topic: How good are the BikeE recumbent bikes at high power / high speed?
Replies: 54
Views: 3585

Re: How good are the BikeE recumbent bikes at high power / high speed?

-Internally mounted battery to fix the weight distribution/handling Interesting - made the pack yourself, or is there a battery that fits in there, off the shelf? I've never actually seen a BikeE, I assume you have to saw it open to get inside the frame member? This looks like a model with no rear ...
by donn
Aug 28 2020 8:10pm
Forum: E-Bike General Discussion
Topic: How good are the BikeE recumbent bikes at high power / high speed?
Replies: 54
Views: 3585

Re: How good are the BikeE recumbent bikes at high power / high speed?

Yeah, I wouldn't bother with a mid drive. Regen is a good thing, it's just, that particular hill is in the wrong place to profit from the regen watts, if you generally leave with a full tank. But sure, it's a nice way to take some of the load off your brakes. If you want to get fancy, Grin's control...