Search found 3209 matches

by motomech
Mar 20 2019 10:50pm
Forum: E-Bike Technical
Topic: Building a light ebike with Q100 motor : advices ?
Replies: 10
Views: 237

Re: Building a light ebike with Q100 motor : advices ?

Please don't double post;
https://endless-sphere.com/forums/viewt ... 4#p1452364
It's considered to be bad form.
You could have just "bumped" your original post.
by motomech
Mar 20 2019 10:37pm
Forum: E-Bike Technical
Topic: Mid drive with GT i-Drive
Replies: 4
Views: 123

Re: Mid drive with GT i-Drive

What frame problems?? The problem my series had(mid 2000's) has to do with the "dogbone". The "anti-bob" system has the bottom bracket "floating" relative to the main frame, the BB pivots on a lg. bearing Adjacent to the chainstay pivot bearing and the BB is located in the frt. by a composite link(d...
by motomech
Mar 17 2019 11:23pm
Forum: E-Bike Technical
Topic: Smallest controller available for a Q100 hub motor ?
Replies: 7
Views: 179

Re: Smallest controller available for a Q100 hub motor ?

All the low power 6-FET controllers are about the same size(the size of a pack of cigarettes). Since you will be going so slow, I am assuming you will be using PAS(Pedal Assist Sensor)and the important question you need to ask is what type of pedal assist do you want. A sine wave with it's LCD displ...
by motomech
Feb 26 2019 2:36pm
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

That link doesn't work.
by motomech
Feb 25 2019 3:12pm
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

Sorry, but without actually hearing the sound it's making, it's hard for me to comment on what it might be. As always w/ something like that, the first step is to determine if the noise is mechanical or electrical related. Your sim. plot well represents the problem w/ a Q100 328 in a big whl. (I cha...
by motomech
Feb 24 2019 9:53pm
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

The above is the reason that for the large majority of Q100 builds, the mid-speed 260 is the best speed range. It's just the best compromise, and to tell the truth, I've used both the 201 and the 260, and I think the 260 climbs just as well on the same control/batt and has the advantage of being a c...
by motomech
Feb 24 2019 9:42pm
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

Scooterman is right, 328 Q100's are too high geared for probably 90% of riders and their routes. In a big wheel, they really never get up into the strongest part of the powerband. Another way to put it is, when something starts to slow the motor down (headwinds, hills, etc.), they are already down i...
by motomech
Feb 22 2019 11:03am
Forum: E-Vehicles General Discussion
Topic: Reel Lawn mower
Replies: 7
Views: 354

Re: Reel Lawn mower

My Tru Cut reel mower is quite a bit newer than that one, but as long as the knife is sharp and they don't rust, they last forever. That's not quite true. The cutting, or " sicssoring" action is a two-part deal. One half of the "sicssors" is the bed knife, which also holds the grass blades upright ...
by motomech
Feb 21 2019 4:08pm
Forum: E-Bike General Discussion
Topic: Cheapest used bikes to make E-bikes?
Replies: 6
Views: 316

Re: Cheapest used bikes to make E-bikes?

It may not be the cheapest way to go, but IMO, it doesn't cost much to get a nicer donor bike in the form of a mountain bike w/ full suspension and disc. brakes. In general, used mountain bikes are going to be a great value. Many folks. buy them, try them out a few times, find out how much work they...
by motomech
Feb 16 2019 4:11pm
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

I've taken several Q100's apart w/out a special tool. Buy a hex-head bolt and some flat washers and install it snug in one of the cover screw holes. Then strike it shapely with a drift(punch)to loosen the cover in a counter-wise direction. This works on frt. motors and un-used rears. Once a rear mot...
by motomech
Feb 15 2019 11:26am
Forum: Battery Technology
Topic: Where to buy cheap Li-pol batteries instead of Multistar?
Replies: 14
Views: 538

Re: Where to buy cheap Li-pol batteries instead of Multistar?

I'm not sure what your point is, but I know what works for me. I've been using Multistar since it's been out and it's been great for my low-power ebikes. When it was on sale, I could build a 12S/20Ahfor $200. Smaller, lighter and way less expensive than any round cell pack I've seen or used. Little ...
by motomech
Feb 15 2019 11:02am
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

A very difficult job. The Halls are mounted in a "stand-off" position. The 3 long leads are like long legs and I don't think it is possible to position them correctly by hand. I think they must be installed with a jig at the factory.
by motomech
Feb 14 2019 1:57am
Forum: Battery Technology
Topic: Where to buy cheap Li-pol batteries instead of Multistar?
Replies: 14
Views: 538

Re: Where to buy cheap Li-pol batteries instead of Multistar?

It is to deep for me, because the speed of bike. If you do not run your packs below 3.75V/cell, they will last a lot longer. If you feel you need to go lower than that on a regular basis, you need to carry more capacity. I used the Turnigy for years and it holds up well, especially the 25C. Better ...
by motomech
Feb 14 2019 1:36am
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

Maybe your self learning controller has some limitations. I was reading about the Bafang G310, which is another small motor that has a high gear ration like the Q100H. https://www.ebikes.ca/product-info/geared.html Justin Le writes ..."The G310 motor have a large 11:1 gear reduction and 16 magnet r...
by motomech
Feb 13 2019 2:38pm
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

That IS a Hall sync problem! The next test is the Hall testing procedure; https://www.youtube.com/watch?v=Y4O9YQG08vE&app=desktop Testing Hall sensors; "to test the hall sensor wires. If your multimeter had good thin tips, you should be able to slide them into the backend of the white connecftor whi...
by motomech
Feb 12 2019 6:05pm
Forum: E-Bike General Discussion
Topic: q100 week and strange sound
Replies: 26
Views: 595

Re: q100 week and strange sound

It's not normal for the motor to have EVER rotated backwards, even if it would eventually straighten itself out. You have a Hall sensor related problem and the controller is having a problem Sync'ing up w/ the motor. Whether or not it's a bad connection or you have the wires mis-matched, I'm not sur...
by motomech
Feb 10 2019 7:21pm
Forum: E-Bike General Discussion
Topic: Looking for guidance building a bike for commuting
Replies: 14
Views: 547

Re: Looking for guidance building a bike for commuting

Craigslist hasn't turned up anything suitable for my height (5'5" (165cm) with a 29" (73.66cm) inseam).
Are you by chance a female? I've known some girls who are "all legs"(works well), but on a guy, I'm thinking these measurements would be rather strange.
by motomech
Feb 10 2019 7:05pm
Forum: E-Bike General Discussion
Topic: Newbie project for commuting ebike - Help plz!
Replies: 78
Views: 1960

Re: Newbie project for commuting ebike - Help plz!

Am i missing something? is the bike cost included in 700USD max? Otherwise it doesn't look too hard, depending on if customs get you with the tax: Skärmavbild 2019-02-10 kl. 23.17.16.png and as i stated before, skip the brake sensors, they are too poor quality to use or pay for motomech is right th...
by motomech
Feb 10 2019 6:46pm
Forum: E-Bike General Discussion
Topic: E-bike for commuting: Front hub motor or TSDZ2?
Replies: 6
Views: 249

Re: E-bike for commuting: Front hub motor or TSDZ2?

I can hardly imagine riding an ebike in icy and snowy conditions, but I would think any mechanical complications of the dive system in those conditions would be something to avoid. Hub motors are like a car w/. a 2-speed transmission. They work fine if no super steep hills are encountered and a high...
by motomech
Feb 10 2019 4:58pm
Forum: E-Bike General Discussion
Topic: Newbie project for commuting ebike - Help plz!
Replies: 78
Views: 1960

Re: Newbie project for commuting ebike - Help plz!

If this IS over what you can spend, we could think about starting again with the Q100H. You could safely put it in the frt. whl. and not have to mess with the gears. A Q100 H 201 is what I run in the ft. of my 2WD and it will do 20 mph in a 700cc wheel. With the 9-FET controller, it would still be a...
by motomech
Feb 10 2019 4:45pm
Forum: E-Bike General Discussion
Topic: Newbie project for commuting ebike - Help plz!
Replies: 78
Views: 1960

Re: Newbie project for commuting ebike - Help plz!

Sorry, I've been gone on a trip. Well, this is going to piss a lot of people off, but you are getting a lot of info that is off the original idea and I would suggest you dis-regard everything you have been told since my last post. I've been looking at how to make your order and the problem is, BMS B...
by motomech
Feb 07 2019 6:00pm
Forum: E-Bike General Discussion
Topic: Newbie project for commuting ebike - Help plz!
Replies: 78
Views: 1960

Re: Newbie project for commuting ebike - Help plz!

What an enlightening post!! Thank you @motomech!!! Your suggestions/recommendations about the speed seem perfect-fit for me! I couldnt agree more about the safe-speed aspects of yours... You are right I did not state it in my initial post, but, here you see, I m talking about 30Kph which is even be...
by motomech
Feb 07 2019 5:52pm
Forum: E-Bike General Discussion
Topic: Newbie project for commuting ebike - Help plz!
Replies: 78
Views: 1960

Re: Newbie project for commuting ebike - Help plz!

Sorry got busy replying to this thread, which you might want to check out; https://endless-sphere.com/forums/viewtopic.php?f=3&t=98575&p=1443969#p1443969 Will reply tomorrow That was very userful thanx! One more question: what about the freewheel-cassete choice? Correct me if I m wrong, but as I ha...
by motomech
Feb 07 2019 5:46pm
Forum: E-Bike General Discussion
Topic: Newbie project for commuting ebike - Help plz!
Replies: 78
Views: 1960

Re: Newbie project for commuting ebike - Help plz!

It's more a case that I ride mountain bikes that were considered porky in their day, 2.4" tires, inflated to 40 psi. Makes for a comfy ebike, but not a great pedaler.
So it's not only a case of everybody is different, but also everybody's ride is different.
by motomech
Feb 07 2019 1:28am
Forum: E-Bike General Discussion
Topic: Newbie project for commuting ebike - Help plz!
Replies: 78
Views: 1960

Re: Newbie project for commuting ebike - Help plz!

Sorry got busy replying to this thread, which you might want to check out;
https://endless-sphere.com/forums/viewt ... 9#p1443969
Will reply tomorrow