Search found 3167 matches

by motomech
Dec 10 2018 10:26pm
Forum: Motor Technology
Topic: controller with PAS input customizable via 3 way switch?
Replies: 2
Views: 89

Re: controller with PAS input customizable via 3 way switch?

As I look back, I see I never really answered your original question about wiring in a 3-way rocker switch to control the PAS, so here goes; A number of years ago, I did just that. As I recall, the controller was a KU63 or KU65. I soldered in the wires, bundled and ran them them to a custom bracket ...
by motomech
Dec 10 2018 10:00pm
Forum: Motor Technology
Topic: controller with PAS input customizable via 3 way switch?
Replies: 2
Views: 89

Re: controller with PAS input customizable via 3 way switch?

I use this controller on all my Q100's and my Ezee V1 w/ voltages between 44.5V (12S LiPoly) & 52V (14S LiPoly): https://www.ebay.com/itm/36V-48V-350W-9MOSFET-ebike-Electric-Bicycle-Brushless-Motor-Controller-with-LED/222373438918?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140107095...
by motomech
Nov 23 2018 11:44pm
Forum: E-Bike General Discussion
Topic: Q128H Light & Torquey 800W Hub Motor
Replies: 21
Views: 724

Re: Q128H Light & Torquey 800W Hub Motor

You can save yourself a lot of time and just do a proper search here. Just search the posts of either myself, D8veh or chas58 using the keyword Q128. Literally hundreds of posts like; https://endless-sphere.com/forums/viewtopic.php?f=3&t=83886&p=1235123&hilit=q128+D8veh#p1235123 https://endless-sphe...
by motomech
Nov 22 2018 5:06pm
Forum: E-Bike General Discussion
Topic: Q128H Light & Torquey 800W Hub Motor
Replies: 21
Views: 724

Re: Q128H Light & Torquey 800W Hub Motor

I am sticking with rear hub motors because climbing a hill a front hub motors spins. That is a rather general statement, but yes, a frt. mount hub motor will spin given enough power, somewhere around 1500 Watts system power. But that is the range where other handling and safety issues arise. I had ...
by motomech
Nov 22 2018 1:08pm
Forum: E-Bike General Discussion
Topic: Lightweight/discrete Q128c commuter build on a road bike
Replies: 67
Views: 4398

Re: Lightweight/discrete Q128c commuter build on a road bike

Since you are describing an "intermittent" prob., I would not suspect the prob. to be related to mechanical components like the gears. Over the years, I have damaged two Cutes, one was a drop-out failure and one was a Hall sensor failure. I have also melted Hall/Phase wires and connectors. All of th...
by motomech
Nov 20 2018 7:36pm
Forum: E-Bike General Discussion
Topic: How did you Open up a Q100c CST Motor ?
Replies: 3
Views: 201

Re: How did you Open up a Q100c CST Motor ?

I know "sounds" are hard to quantify, but is it a metallic "whine"? My 260H has always had a faint plasticky buzz, which I assume is the gears, but my 201 CST (on 14S LiPoly) has always been dead silent. I doubt it's the magnets, w/out a reason to look at them, I have never even noticed them, but I ...
by motomech
Nov 20 2018 3:39am
Forum: E-Bike General Discussion
Topic: How did you Open up a Q100c CST Motor ?
Replies: 3
Views: 201

Re: How did you Open up a Q100c CST Motor ?

Unless you have run it underwater(unlikely where you are at), there is no maintenance to be done. They come w/ a lite coating of what looks to be Vaseline and it's all that's needed since the gears are made of nylon(or something like it)and are self lubricating. If you feel a need to do something, c...
by motomech
Oct 23 2018 10:43am
Forum: Battery Technology
Topic: Suggestion for Battery Testing Intruments
Replies: 4
Views: 199

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: 401

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: 358

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: 401

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: 390

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: 139

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: 586

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: 2468

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: 830

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: 390

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: 2468

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: 393

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: 369

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: 2468

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: 2468

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: 2468

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: 2468

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: 2468

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...