Search found 3160 matches

by motomech
Oct 23 2018 10:43am
Forum: Battery Technology
Topic: Suggestion for Battery Testing Intruments
Replies: 4
Views: 173

Re: Suggestion for Battery Testing Intruments

Hi All, I am technology enthusiast working on a electric scooter 72V 24Ah. Can somebody suggest the basic/minimum instruments required to test the battery and controllers. If possible can someone suggest at least the best voltmeter for this application. Thank you in advance. Voltage only indicates ...
by motomech
Oct 23 2018 10:30am
Forum: E-Bike General Discussion
Topic: Mac 12T and dual torque arms -> really necessary ?
Replies: 15
Views: 303

Re: Mac 12T and dual torque arms -> really necessary ?

Chalo-You pointed out to me to I referred to the wrong Model tire I'm using. It is the "Slick", which is a tire. w/ sipping.
I does seem odd that WTB would name a tire w/ a "normal" type of tread a "Slick" :?:
by motomech
Oct 23 2018 10:04am
Forum: E-Bike Technical
Topic: Battery upgrade (voltage or amp hours) for longer distance and speed
Replies: 7
Views: 316

Re: Battery upgrade (voltage or amp hours) for longer distance and speed

I was thinking on, in theory the higher the voltage the less amps are needed to produce the same power. Let's say I want to upgrade from 48V to 96V, while everything is the same (controller, motor, battery capacity). With 96V the motor can spin faster, and if the controller can give me enough amps,...
by motomech
Oct 23 2018 9:41am
Forum: E-Bike General Discussion
Topic: Mac 12T and dual torque arms -> really necessary ?
Replies: 15
Views: 303

Re: Mac 12T and dual torque arms -> really necessary ?

You are focusing on the wrong issue, rather than wishing for an easier way to repair a flat, you should be thinking about what you can do to prevent flats. During the 8 years that I have been building and riding Ebikes, the evolution of my wheels and tires has received more attention than any other ...
by motomech
Oct 05 2018 9:24pm
Forum: E-Bike Technical
Topic: Shrink Solder Sleeve Butt Connectors
Replies: 6
Views: 336

Re: Shrink Solder Sleeve Butt Connectors

Yeah, they worked great. On my Idrive build I used a controller and harness from another bike and the wires were a little short to reach my seat bag. I got them in thru a little hole I punched in the bag, but they weren't long enough to come out the zippered end, so I had a prob. soldering all the w...
by motomech
Oct 05 2018 9:48am
Forum: E-Bike Technical
Topic: Motor commutation chatter with EZEE and Phaserunner?
Replies: 2
Views: 113

Re: Motor commutation chatter with EZEE and Phaserunner?

..... , the gear whine on the EZEE is taking some getting used to Perhaps the gear material has something to do w/ it. I have a couple of original Ezee V1's that came w/ the white nylon gears, which I suspect are softer than the later blue composite gears. Motor "whine", is of course subjective, bu...
by motomech
Oct 05 2018 9:26am
Forum: E-Bike General Discussion
Topic: 25mph new build.
Replies: 9
Views: 533

Re: 25mph new build.

Just because you will be using a 36 V pack, does not mean you necessarily have to use a 36 V motor. The 36V/500 is just the factory rating, a reference. A basic "rule of thumb" used here is, it's safe to use a hub motor up to 2 1/2 times the rating for short periods of time. In the case of the BPM I...
by motomech
Oct 04 2018 11:09pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

In the summer here, I ride mostly at nite and while I have a great h.lite, I seem to hit something I didn't see almost every ride. It's then when my spine really appreciates have some cushion to take the sting off.
by motomech
Oct 04 2018 11:01pm
Forum: E-Bike Technical
Topic: Metal planetary gears?
Replies: 9
Views: 782

Re: Metal planetary gears?

Quite a few years ago, a member here, mckeefer, over-volted a min-motor to destruction. As I recall he was in the 70 to 80 Volts range when the windings cooked. Of course, he had to up the amps as Voltage went up to achieve an increase in speed. I have run 14S LiPoly (about 54V nom.) on mini motors,...
by motomech
Oct 04 2018 10:50pm
Forum: E-Bike Technical
Topic: Shrink Solder Sleeve Butt Connectors
Replies: 6
Views: 336

Shrink Solder Sleeve Butt Connectors

These things are a boon to the ebike builder, so much easier than the tedious job of soldering many small wires, like when elimitnating clunky controller connectors. Even when working in a "rat's nest" of wires, one can use a directed flame torch and quickly make secure and weathertite splices witho...
by motomech
Oct 04 2018 9:53pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

Dude, what planet do you ride on?? I am absolutely convinced that a properly functioning hardtail can be counted on whereas who knows about a 15+ year old used FS bike. MTB's have been equipped w/Fox Floats since the early 2000''s and the rebuild kits are like $15 and take an hour to install w/ no s...
by motomech
Oct 03 2018 7:18pm
Forum: E-Bike General Discussion
Topic: Gear motor and 29r wheel
Replies: 7
Views: 325

Re: Gear motor and 29r wheel

My experience w/ higher-speed motors or larger wheels is the controller is most likely to get hot. If the motor is struggling to get up into the higher, more efficient rpm zone, the controller tries to supply as many Amps as it can. I'm talking about climbing mostly.
by motomech
Oct 03 2018 7:13pm
Forum: E-Bike General Discussion
Topic: Can I add a single speed freewheel on my gearless hub motor?
Replies: 11
Views: 317

Re: Can I add a single speed freewheel on my gearless hub motor?

Lot of trouble when one can just use a DNP 11 sm. tooth free wheel and leave it on the sm. cog. That's what I do and since I'm not shifting, the 11T gear lasts longer. As mentioned above, if one feels they want a "cleaner look" or less weight, just cut off a few of the larger gears. That's what I di...
by motomech
Oct 01 2018 10:37pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

At this point in time, I can't see myself comfortably riding beyond 30 mph. I think I've told you, you will not be going 30 mph. 30 mph is superfast for an ebike. I was trying to get you to 25 mph. If you want to go 30 mph, double your budget, forget the Trek and buy the Frisbee sized DD motor and ...
by motomech
Oct 01 2018 8:13pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

Wtuber posted while I was typing. The Q100 mini is a little smaller than the Ebiking mini, but, as you can see, the difference in size between a DD and a mini geared is profound! Really briefly (replying from work), the ebay motor you linked says it is compatible with v-brakes, which I assume means...
by motomech
Oct 01 2018 3:17pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

Wtuber posted while I was typing.
The Q100 mini is a little smaller than the Ebiking mini, but, as you can see, the difference in size between a DD and a mini geared is profound!
by motomech
Oct 01 2018 2:43pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

I think a front disc, air shock rebuild kit, and air pump are all reasonable. You prefer the WTB Slicks over Marathon Plus? That's what I have seen recommended most frequently so far. I have used both and prefer the WTB. It's a much newer design and the flat guard layer is thinner, which means less...
by motomech
Oct 01 2018 5:29am
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

Would anyone be able to weigh in this Trek Fuel 80? https://dallas.craigslist.org/dal/bik/d/trek-fuel-80-full-suspension/6711453532.html Good donor bike, especially if it is in gd. shape(looks like it) 21.5" frame is what you want, at 6'1", no prob. w/ stand-over height LImited 3" suspension travel...
by motomech
Sep 27 2018 11:43pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

To clarify, would you recommend going the route madrhino is suggesting, with a hardtail and ebay dd kit, or something more along the q100h route? Well, they both have their advantages. I always thought the DD motor would be great for the open road, touring, where you might pedal for miles w/out sto...
by motomech
Sep 27 2018 9:33pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

I totally agree w/ madrhino's idea of an kool urban commuter, but I just can't see how to do that on a $1500 budget. And building wheels is probably better for your the second build(you will get addicted:)when one has a little more experience.
by motomech
Sep 27 2018 9:30pm
Forum: E-Bike General Discussion
Topic: Help Me Build My Daily Commuter?
Replies: 96
Views: 1934

Re: Help Me Build My Daily Commuter?

Hey ES! (think I posted this in the wrong forum earlier...my bad) I am honestly a little intimidated to post this because there is still so much I don't know. I have been lurking for a month, trying to read as much as I can, but sorry in advance for my gaps in knowledge. For reference, I am 28, in ...
by motomech
Sep 26 2018 2:08pm
Forum: E-Bike Technical
Topic: What kind of PAS ?
Replies: 1
Views: 123

Re: What kind of PAS ?

Others will chine in, but I suspect the green is not used.
You can't damage the controller if they are connected wrong, so I would say try'em and see if it works.
by motomech
Sep 26 2018 1:24am
Forum: E-Bike Build Threads / Photos & Video
Topic: Going AWD
Replies: 14
Views: 521

Re: Going AWD

I am a real noob I know. Yes you are. I don't question you're buying a "store bought" Ebike. It actually makes a lot of sense for the rider that doesn't "want to get his hands dirty" and rides the multi-paths 20 or 30 miles on Sunday. There have been times, during my second or third revision that I...
by motomech
Sep 25 2018 11:25pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Going AWD
Replies: 14
Views: 521

Re: Going AWD

As for the torque arms, as stated, they may have to be manufactured custom, unless you can do metal work yourself. Grin has their front torque arms. Check them out to think about if they fit or not. Now that I see the close-up pic, I see that I was wrong. The fork leg goes up and down, but does not...
by motomech
Sep 25 2018 5:04am
Forum: E-Bike Build Threads / Photos & Video
Topic: Going AWD
Replies: 14
Views: 521

Re: Going AWD

First thing first, the rear motor on that bike is a geared motor, not a DD. The fact that the system will reach 28 mph, tells me the system makes good power, but the motor is a high speed range motor(gearing and maybe the winds) and is not optimised for climbing. For max range, you certainly don't w...