Search found 34953 matches

by dogman dan
Mar 12 2020 7:40am
Forum: E-Bike Technical
Topic: limiting motor speed by rpm rather than power?
Replies: 6
Views: 227

Re: limiting motor speed by rpm rather than power?

Yep, if you get a CA installed on your controller, you can limit amps, limit speed, etc. Then with a few easy pushed on the buttons, restore full power for the off road riding. With speed limiting enabled on the CA, you still can get your max amps, but as soon as it hits max speed, it will just stop...
by dogman dan
Mar 12 2020 7:16am
Forum: E-Bike General Discussion
Topic: 24 volt options
Replies: 8
Views: 439

Re: 24 volt options

Put the 24v zip motor, or whatever you choose on the bike. 24v geared motor kits used to be around, but mostly stuff is 36v now. Then just run a cable to the bike from the battery on the trailer. You might just look for a rear, planetary geared motor kit in 36v, then buy a 24v controller to run it o...
by dogman dan
Mar 12 2020 7:10am
Forum: E-Bike General Discussion
Topic: Efficiency test Geared vs Direct Drive Hub motors
Replies: 43
Views: 1416

Re: Efficiency test Geared vs Direct Drive Hub motors

Agree. One big motor, keep the front wheel lighter. For moab, a larger rear geared motor would be ok, but a lot better would be a mid drive. I ride my desert trails fine with a 500w geared motor, but really, don't go riding it on hard trails when its all that hot. Dawn patrol, or just go to 9000 fee...
by dogman dan
Mar 11 2020 6:20am
Forum: E-Bike Technical
Topic: Gorilla Tape on 18650 Battery Pack
Replies: 2
Views: 160

Re: Gorilla Tape on 18650 Battery Pack

Back when I started with e bikes, nearly all lithium battery packs came wrapped in ordinary duct tape. Lots of discussion was about how to further protect them from abrasion, or other possible mechanical damage. The way I came to like, was wrapping more vulnerable types of battery in tight fitting c...
by dogman dan
Mar 11 2020 6:13am
Forum: E-Bike General Discussion
Topic: Efficiency test Geared vs Direct Drive Hub motors
Replies: 43
Views: 1416

Re: Efficiency test Geared vs Direct Drive Hub motors

Any kind of load that slows a motor a lot can push it to inefficiency. That is why the stop and go ride can be up to 20% less efficient when comparing some DD motors than a geared. Solution, pedal first. Or,, more power so the motor never slogs. Its the temporary overload that gets so inefficient. U...
by dogman dan
Mar 11 2020 6:01am
Forum: E-Bike General Discussion
Topic: DIY vs. Commercial: How/ Why(not)?
Replies: 21
Views: 763

Re: DIY vs. Commercial: How/ Why(not)?

Ok, now you really threw out the red flag. With glaucoma and macular degeneration, you have no business riding 30 mph in the bike lanes. You simply are not going to see the garbage that abounds in the bike lane. And you are going to get flats. When you spoke about bad eyes, I just thought you meant ...
by dogman dan
Mar 11 2020 5:46am
Forum: Battery Technology
Topic: Battery hot not under load?
Replies: 5
Views: 261

Re: Battery hot not under load?

If the bms was discharging a high cell group, it would be warm. Or it could be warm because you are charging real fast?
by dogman dan
Mar 11 2020 5:44am
Forum: Battery Technology
Topic: Battery protection board or...... balance wires?
Replies: 8
Views: 267

Re: Battery protection board or...... balance wires?

Both, is not a bad approach. The balance wires may be used only for monitoring, without actually putting them on a charger that reads out volts of each cell.
by dogman dan
Mar 11 2020 5:38am
Forum: Battery Technology
Topic: Do you need to "break-in" your batteries?
Replies: 5
Views: 305

Re: Do you need to "break-in" your batteries?

I bet he just warmed up the batteries, which does affect performance.

Break in is usually just a matter of a cycle or two, which gets it to take its full charge. I find a battery that sits all winter, can behave this way too. Likely more a matter of the pack balancing than anything else.
by dogman dan
Mar 11 2020 5:35am
Forum: General Discussion
Topic: la Nina rears her ugly head
Replies: 1683
Views: 118209

Re: la Nina rears her ugly head

Farther out in the desert SW, We are setting records for spring rain. My house got 2 inches since march first. Wettest spring since 1958, or 41. Most of the winter, it was hitting more to the north of the border line where I am. Here, a spring storm usually rips through in about 30 min, leaving a tr...
by dogman dan
Mar 10 2020 6:56am
Forum: E-Bike General Discussion
Topic: Efficiency test Geared vs Direct Drive Hub motors
Replies: 43
Views: 1416

Re: Efficiency test Geared vs Direct Drive Hub motors

Very similar to what I found when I first started trying different motors. At same speed, same route, same weather, and few stops, the efficiency difference can be made up with a few yards of extra pedaling on the DD. Makes sense, both are very efficient, brushless motors. But try another test, wher...
by dogman dan
Mar 10 2020 6:41am
Forum: E-Bike General Discussion
Topic: DIY vs. Commercial: How/ Why(not)?
Replies: 21
Views: 763

Re: DIY vs. Commercial: How/ Why(not)?

Re the commute and the suit. Regardless of whether you build, or buy, you need a commuter bike. You will need full fenders, and a bike with a full chain guard. Easy way to get this, is convert a 7 speed beach cruiser with a rear hub motor. For a good bike to convert, look at the electra townie, or s...
by dogman dan
Mar 10 2020 6:30am
Forum: E-Bike General Discussion
Topic: Need to source another full susp.
Replies: 21
Views: 502

Re: Need to source another full susp.

Not sure what type of riding you are talking about. For sure, the frame itself on a genesis, or cheap mongoose, will be a problem for riding faster than 30 mph. Maybe even for 25 mph. The cheap forks are fine for street, or gravel paths or roads. Where the fork becomes an issue is real singletrack r...
by dogman dan
Mar 10 2020 6:13am
Forum: E-Bike General Discussion
Topic: Converting a Bakfiets cargo bike
Replies: 33
Views: 2301

Re: Converting a Bakfiets cargo bike

Nice neat install. I like the way the battery tucks under the seat. To force your battery to balance, try charging full, let sit 30 min for the bms to discharge any high cells, then recharge full again. If the charger won't restart, ride a very short ride, then charge. This will force the bms to con...
by dogman dan
Mar 09 2020 7:16am
Forum: E-Bike General Discussion
Topic: Need to source another full susp.
Replies: 21
Views: 502

Re: Need to source another full susp.

The key thing you just said is " to go slow" The BSO bike can do that, its going fast where the cheap frame will wobble. The suspension design is good, I made a similar bike, the old mongoose blackcomb ride a lot better with a rock shock air shock replacing the pogo stick back there. I did lots of h...
by dogman dan
Mar 07 2020 8:04am
Forum: General Discussion
Topic: 2020 Sea Otter Classic Postponed Due to Alcoholic Beverage Virus!
Replies: 13
Views: 652

Re: 2020 Sea Otter Classic Postponed Due to Alcoholic Beverage Virus!

From what I heard, what did in south by southwest, was major sponsors pulling out. Can't put it on without the coke or red bull money at all. These things aren't generally profitable, except to the local economy. Austin just lost millions in retail spending. No hotels, meals, and gas to get home sal...
by dogman dan
Mar 06 2020 5:00pm
Forum: General Discussion
Topic: 2020 Sea Otter Classic Postponed Due to Alcoholic Beverage Virus!
Replies: 13
Views: 652

Re: 2020 Sea Otter Classic Postponed Due to Alcoholic Beverage Virus!

Burning man just occurred to me.. Be a pity if it's so bad it gets canceled too. Lots of hanging by a thread events will lose money, and that will be the end of it.
by dogman dan
Mar 06 2020 7:22am
Forum: General Discussion
Topic: 2020 Sea Otter Classic Postponed Due to Alcoholic Beverage Virus!
Replies: 13
Views: 652

Re: 2020 Sea Otter Classic Postponed Due to Alcoholic Beverage Virus!

Lots of stuff going to get canceled. I might be out a thou next fall, for an RV spot at the Albuquerque Balloon Fiesta. I could cancel now for refund, but hell no, not yet. The event is in October. Just saw a picture of Mecca on the news. Nobody there. Usually an incredible crowd doing the wheel.
by dogman dan
Mar 03 2020 8:38am
Forum: E-Bike General Discussion
Topic: eBike related abuse
Replies: 21
Views: 1526

Re: eBike related abuse

Sometimes you have another problem. I can out cook nearly every restaurant in town. I think it might be a reaction to all those hot dog dinners Dad fed me when I was a growing teen. By 15, I had a restaurant job. Money was nice, but I was there to eat. Now when I eat out, I figure out the recipe by ...
by dogman dan
Mar 03 2020 8:20am
Forum: E-Bike General Discussion
Topic: eBikeing Moab Practice and Slickrock Loops?
Replies: 4
Views: 251

Re: eBikeing Moab Practice and Slickrock Loops?

Rent the mid drive will seem to cost a lot. But you just said the magic words, one time deal. Use the experience to tell you if you want to ride more dirt locally. If so, most likely a good 10t mac or equivalent will work for you on your current bike. I do my off road riding on a similar motor. It c...
by dogman dan
Mar 02 2020 8:31am
Forum: E-Bike General Discussion
Topic: 5kw hub motor that will take a 6 speed cassette?
Replies: 28
Views: 1005

Re: 5kw hub motor that will take a 6 speed cassette?

I shoulda read better, and seen where you want to have two or more things that are more or less incompatible. Pedal going 35 mph, plus a very low gear for breakdown, and 9 speed, and a huge motor. So back to gears in front, but no way you have to have a front derailleur. You just need two rings up f...
by dogman dan
Mar 02 2020 8:20am
Forum: E-Bike General Discussion
Topic: 14" Fatbike wheel with hub motor. Does it exist?
Replies: 9
Views: 474

Re: 14" Fatbike wheel with hub motor. Does it exist?

Cool device. I'd modify it as needed, to run a scooter motor wheel. With fatter tire. It will be some kind of cast rim, not laced wheel. Re covid, no way we can know if anything ships or not. So risk little money, or ideally, look for local source. I'd look at flea markets for broke down old scooter...
by dogman dan
Mar 02 2020 8:10am
Forum: General Discussion
Topic: Fatal ebike crash trial
Replies: 31
Views: 1809

Re: Fatal ebike crash trial

Yes,, people more and more will step out in front of you. We need self driving phones. That could just as easily have happened to somebody driving a legal scooter. The rub is he's riding the illegal bike. Something to think about if you ride an illegal bike in a typical US city, or in Europe. I just...
by dogman dan
Mar 02 2020 7:59am
Forum: General Discussion
Topic: Giant Trance - compatible with conversion?
Replies: 3
Views: 269

Re: Giant Trance - compatible with conversion?

s1600_2013_Trance_X_29er_0.jpg Post a photo, or link, helps with specific questions about bikes. Nothing on that bike makes a rear motor impossible, but it would go easier with a conversion of the rear shifter to 7 speed, so you can use a generic freewheel found on most rear motor kits. The rear dr...
by dogman dan
Mar 01 2020 9:11am
Forum: E-Bike Technical
Topic: More power and range for Babboe big trike
Replies: 5
Views: 985

Re: More power and range for Babboe big trike

With these cargo bikes, much depends on the type of brakes, or type of gears on them. Anything with a rear drum brake, or rear internal gear hub, or both, makes it harder to put a big powerful rear hub motor on it. But if you have rim brakes or disk brakes on the rear wheel, and regular derailleur g...