Search found 34315 matches

by dogman dan
Apr 25 2019 7:54am
Forum: E-Bike General Discussion
Topic: Do rear hub conversion kits not some with rear sprockets?
Replies: 17
Views: 279

Re: Do rear hub conversion kits not some with rear sprockets?

Perfect. We just got confused, because typically bikes with a cassette have 9 to 12 gears these days. So for sure, I was assuming at least 8 gears, which was typical for cassette bikes 15 years ago. You only need to install the wheel, use torque arms of some kind, and then make minor adjustments to ...
by dogman dan
Apr 25 2019 7:44am
Forum: E-Bike General Discussion
Topic: E-Bike Registration
Replies: 24
Views: 470

Re: E-Bike Registration

From what I read, you cannot get a plate without a manufacturer assigned vin. This is why in the US, its much better to start with any old motorcycle frame. Just for that Vin number. This is what the guy at DMV was saying. Right now it is an illegal, homemade, motorcycle with pedals. Tons of us ride...
by dogman dan
Apr 25 2019 7:33am
Forum: E-Bike General Discussion
Topic: Acceleration - Top Speed - Torque
Replies: 10
Views: 329

Re: Acceleration - Top Speed - Torque

YES, if he wanted to ride 30 mph all the time, perfect. Don't know if you can get that motor in a slower wind though. Again,, the ONLY reason to choose the slower wind, is to build the slow bike. Otherwise, pick a voltage for your faster wind motor to get the speed you want, with tons of copper, for...
by dogman dan
Apr 25 2019 7:22am
Forum: E-Bike General Discussion
Topic: Um... how do you handle all the handlbar mounted accessories?
Replies: 16
Views: 330

Re: Um... how do you handle all the handlbar mounted accessories?

In general, a cree led is pretty bright. My cheap flashlights have an 80 lumen cree. Most bike lights I see in Walmart, or such like, are 30 lumen. One of my 80 lumen lights, is brighter than the headlights of my 2000 van. Pretty nice. But if you spend 56 cents on an led, I bet its not the 80 lumen ...
by dogman dan
Apr 25 2019 7:11am
Forum: E-Bike General Discussion
Topic: Do rear hub conversion kits not some with rear sprockets?
Replies: 17
Views: 279

Re: Do rear hub conversion kits not some with rear sprockets?

hang on a sec, and stop freaking out. First of all, what do you have on the bike now. How many gears? if its 8 gears, you are ok with what you have. You need only make minor adjustments to the derailleur, so it travels only 7 spaces, not 8. The adjusters are two screws, usually on the back side of t...
by dogman dan
Apr 24 2019 8:56am
Forum: E-Bike General Discussion
Topic: Acceleration - Top Speed - Torque
Replies: 10
Views: 329

Re: Acceleration - Top Speed - Torque

I still think the slower motor will do him fine, and can handle enough power to make him take off snappy. If he chooses the bigger motor, yes, more torque even on the same watts. Why? enough wire to use the watts, vs making it hot. But the faster motor will not only have a faster top speed, which co...
by dogman dan
Apr 24 2019 8:21am
Forum: E-Bike General Discussion
Topic: Um... how do you handle all the handlbar mounted accessories?
Replies: 16
Views: 330

Re: Um... how do you handle all the handlbar mounted accessories?

I have taken bars that have some rise to them, and added a pvc pipe top bar, with two screws into holes drilled in the handlebar. Rode hard, never broke the bar because of the hole.

That crossbar can hold a CA, and two lights. Or, a speedo and a phone mount.
by dogman dan
Apr 24 2019 8:14am
Forum: E-Bike General Discussion
Topic: E-Bike Registration
Replies: 24
Views: 470

Re: E-Bike Registration

Well, once again, if you want motorcycle performance to ride on the street, then you should get a motorcycle. Simply because its cheaper. Cheap enough to afford both, if not now, later. But you have the e bike already. I would just tone it down to closer to legal speeds once in town. The desert ride...
by dogman dan
Apr 24 2019 7:59am
Forum: Battery Technology
Topic: 2C or 8C?
Replies: 10
Views: 216

Re: 2C or 8C?

That makes sense to me, my experience has been that the real increased sag on cells starts when its more like 90 or 95% discharged. It should have decent resistance still, right in the middle of the discharge. The assumption is that the sag is caused by an increase in resistance when they get that l...
by dogman dan
Apr 23 2019 8:15am
Forum: E-Bike General Discussion
Topic: DIY Build - Touring eBike - Journal - Beginner
Replies: 34
Views: 786

Re: DIY Build - Touring eBike - Journal - Beginner

That gigantic, oversize touring bike did have rear suspension. I found though, that once a bike is that long, it needs no rear suspension. The bike pivots over the center better, and stops bending rims and breaking spokes when loaded. And yeah, fixing a rear flat on that pig was a real bitch. First ...
by dogman dan
Apr 23 2019 7:59am
Forum: E-Bike General Discussion
Topic: Casual Commuter Recommendations
Replies: 24
Views: 503

Re: Casual Commuter Recommendations

Well, it did take me about three years of commuting, 10,000 miles or so to slow down. Much of that was my route, half of it on the shoulder of a 45 mph freeway frontage. another quarter of it on a bike path, where I ran 20 mph, slowing to pass pedestrians at 10 mph. Then the last bit on very busy, r...
by dogman dan
Apr 23 2019 7:40am
Forum: E-Bike General Discussion
Topic: E-Bike Registration
Replies: 24
Views: 470

Re: E-Bike Registration

Clown pedal like hell when you see a cop. When you get to court, if that ever happens, show that paper. But my bet is that if you are not a jerk, the cops leave you alone. Ride like its a motorcycle, and It may help in court if your license has the motorcycle endorsement. In my own town, all motors ...
by dogman dan
Apr 23 2019 7:21am
Forum: E-Bike General Discussion
Topic: Acceleration - Top Speed - Torque
Replies: 10
Views: 329

Re: Acceleration - Top Speed - Torque

For your specific needs, a lower rpm motor will work best for you if you run 48v. Otherwise, you'd still end up with a 35 mph bike running 2000w. I would not get too hung up on top speed though, if it goes 20 mph, close enough. Chances are, if you pedal any, your top speed will be limited to 17 mph ...
by dogman dan
Apr 23 2019 7:02am
Forum: E-Bike General Discussion
Topic: Parallel packs
Replies: 4
Views: 123

Re: Parallel packs

Both need to be 14s. P doesn't matter. As they empty, each will empty what it has, no more. They will stay the same voltage 99% of the time. The strongest pack will provide more in an amp spike, but then they will level out again. If there is a bms, you have to charge separately in most cases. Fill ...
by dogman dan
Apr 23 2019 6:57am
Forum: General Discussion
Topic: Crash Thread - lucky
Replies: 6
Views: 135

Re: Crash Thread - lucky

Routine lay down. Practice regularly till you are expert at it. Seriously. If you need it, go practice laying down a 50 buck pedal bike. Someday, ability to lay it down at will can save your life. Hit things with your feet, if you are doomed to hit something. If you will performance ride in the stre...
by dogman dan
Apr 22 2019 7:33am
Forum: E-Bike Technical
Topic: Anyone ever extended the fork neck?
Replies: 6
Views: 181

Re: Anyone ever extended the fork neck?

Welding a steer tube at the base is something I would not trust my welding for.

But the middle of the tube should only get the load from tightening the headset. It should not be able to bend in the middle of the steer tube.


I would reinforce my weld, because I weld that badly.
by dogman dan
Apr 22 2019 7:12am
Forum: E-Bike General Discussion
Topic: Need help with battery wiring
Replies: 4
Views: 138

Re: Need help with battery wiring

Best way to know if your battery is getting used beyond what it can do and last, is to see how hot it gets. If your battery does not get above maximum possible ambient temp when you run it, its going to be happy. This is about 120f. twenty degrees or so above body temp. If you can't hold that thing ...
by dogman dan
Apr 22 2019 6:59am
Forum: E-Bike General Discussion
Topic: Casual Commuter Recommendations
Replies: 24
Views: 503

Re: Casual Commuter Recommendations

The cheapest cells in china's specifications are a lie. Not a lie for those cells that came out perfect. But they got to be the cheapest cells in china by not meeting the test for perfect. Essentially, they are grade b, unable to be branded. Or worse, just made by a pirate type factory. They crank o...
by dogman dan
Apr 22 2019 6:42am
Forum: E-Bike General Discussion
Topic: Battery Location. Your Opinion Matters!
Replies: 25
Views: 569

Re: Battery Location. Your Opinion Matters!

That will feel fine, and if that is where you can reach the water easier, perfect. But if its harder to reach the water there, then swap it. I would move the controller. you have a fender, but its still wetter down by the bottom of the frame. Put your controller on top of the fender, but right under...
by dogman dan
Apr 22 2019 6:32am
Forum: Battery Technology
Topic: 72V Hailong packs, can run 2 paralleled?
Replies: 4
Views: 141

Re: 72V Hailong packs, can run 2 paralleled?

True, continuous draw of any kind of battery ought to be limited to half whatever the max is, and a quarter of it for some. Fortunately, 30 amps of 72v on a bike, with one person on it, should get you into a top speed well within the max your gearing allows. Might only take about 20 amps to cruise f...
by dogman dan
Apr 22 2019 6:24am
Forum: Battery Technology
Topic: Lead acid anyone?
Replies: 37
Views: 904

Re: Lead acid anyone?

Definitely still the thing for off grid. For some strange reason, I don't want a lithium battery in the RV. When my RV is out off the grid, it runs on two deep cycle lead batteries, with partial charging from some tiny solar panels. Sunny day, I need only run my generator in the morning, to catch up...
by dogman dan
Apr 22 2019 6:17am
Forum: Battery Technology
Topic: What battery to choose after your last one burned your house.
Replies: 88
Views: 2966

Re: What battery to choose after your last one burned your house.

The only way to use those nimh, is to make a lot of packs that you connect only in series. Then parallel only for discharge. To charge, each pack separated again and charged with no parallels. Pain in the butt to charge. You got a lot of flashlight cells though. Lots of ways to have a vehicle fire. ...
by dogman dan
Apr 22 2019 6:06am
Forum: General Discussion
Topic: charging question re: parallel batteries
Replies: 7
Views: 299

Re: charging question re: parallel batteries

I would not worry about it much, just charge each with the charger it came with. Then connect up. the voltage is not that different. It will be fine. Again, don't leave them connected and charge with just one. separate them, then charge them. If you want to charge the external one with the internal ...
by dogman dan
Apr 21 2019 8:28am
Forum: E-Bike Technical
Topic: Basic pedaling platform, prior to the E stuff
Replies: 16
Views: 490

Re: Basic pedaling platform, prior to the E stuff

Tandems are instant long tails. They are very long, long tail bikes, but could be shortened with a welder. Good idea. Take the rear seat off, replace with huge cargo deck. Put a mid drive motor on it. Pay attention though, to the wheels. they might be old style 28". Near impossible to get tires and ...