Search found 3233 matches

by motomech
Apr 20 2019 8:15pm
Forum: Battery Technology
Topic: XT90 connectors stuck
Replies: 5
Views: 113

Re: XT90 connectors stuck

I prefer Turnigy bullet connectors. Easier to install and easier to connect/dis-connect.
by motomech
Apr 20 2019 8:06pm
Forum: E-Bike General Discussion
Topic: Info on stripping a DNP Epoch freewheel
Replies: 15
Views: 1988

Re: Info on stripping a DNP Epoch freewheel

This is totally off topic, but this is the first post I've seen recently of a DNP rear gearset. In my DNP 11-32, some teeth seem to be malformed, and the chain slips in that gear a couple times every rotation. No other gear, or gearset has that problem with the chain, and I've inspected the chain f...
by motomech
Apr 19 2019 3:14pm
Forum: E-Bike General Discussion
Topic: What causes inner tube to stick to the inside of a tire?
Replies: 6
Views: 112

Re: What causes inner tube to stick to the inside of a tire?

Use talcum powder in the tire when installing new tire/tube.
by motomech
Apr 17 2019 6:05pm
Forum: Battery Technology
Topic: Battery box for lipos
Replies: 5
Views: 130

Re: Battery box for lipos

I haven't had any bricks swell up in years. As I look back, puffed cells were probably more a result of my mis-treating the LiPoly (Dis-charging past the 80% rule), than anything else. I still wrap my bricks tightly with Gorilla tape for protection as I carry them stacked freely in a frame bag, I do...
by motomech
Apr 16 2019 2:18pm
Forum: E-Bike Technical
Topic: battery boosting with small solar charger?
Replies: 17
Views: 298

Re: battery boosting with small solar charger?

by "semi defunct" i mean the unit as a solar charge controller sometimes would not switch on properly/automatically in the morning when the sun came out, meaning it wouldnt charge all day unless i manually told it to start by pressing a button. That is normal for that unit. If it times out(Night ti...
by motomech
Apr 15 2019 11:17pm
Forum: E-Bike Technical
Topic: battery boosting with small solar charger?
Replies: 17
Views: 298

Re: battery boosting with small solar charger?

I've read this several times and I'm still not clear what you are trying to do. Some sort of variation of the perpetual motion machine I guess. I do have some experience w/ the $30 mpt 7210a solar charger, both as a solar controller and a boost charger for LiPoly. As a solar charger, it really needs...
by motomech
Apr 09 2019 7:14pm
Forum: E-Bike Technical
Topic: 2WD vs high power mid drive kit ?
Replies: 12
Views: 351

Re: 2WD vs high power mid drive kit ?

There's not much point in putting anything more than a geared mini (System Watts-900 to 1300) on the ft. of a 2WD cargo carrying/pulling ebike to climb hills. As he rear wheel drives the load, it unloads the frt. wheel and the frt. tire tend to spin. Probably the trailer tongue weight would compound...
by motomech
Apr 08 2019 9:50pm
Forum: E-Bike General Discussion
Topic: Ebike riding tips
Replies: 15
Views: 484

Re: Ebike riding tips

Adding #4. Do assume every car is going to make that maneuver that will screw you. from opening doors to crossing into your path. Always take evasive action to avoid that possibility every time its even possible. So you in the bike lane, and there is a driveway coming up,, Its no damn time to be be...
by motomech
Apr 08 2019 9:37pm
Forum: E-Bike General Discussion
Topic: 38mph on 250w motor 48V?
Replies: 16
Views: 469

Re: 38mph on 250w motor 48V?

Read his back posts. We are being trolled.
by motomech
Apr 08 2019 9:22pm
Forum: E-Bike General Discussion
Topic: Small triangle, big problems. Trying to find a battery that fits my bike.
Replies: 21
Views: 488

Re: Small triangle, big problems. Trying to find a battery that fits my bike.

Perhaps your ultimatum has to do with you do not have enough space Exactly right. I share a living space with other people and it was really painful negotiating space for the first bike. A second one just sounds like a really good way to piss everyone off. I gotta weigh the benefits here man... and...
by motomech
Apr 08 2019 9:40am
Forum: E-Bike General Discussion
Topic: Small triangle, big problems. Trying to find a battery that fits my bike.
Replies: 21
Views: 488

Re: Small triangle, big problems. Trying to find a battery that fits my bike.

There is space in FRONT of the down tube for a bottle-type batt. plus whatever you can fit in the triangle. Your bike may even have the rivets for mounting, but if it doesn't, they are easy enough to install. I use LiPoly (bricks), so I made the frt. batt. I use on my 2WD (see link below) using a we...
by motomech
Apr 05 2019 5:15pm
Forum: E-Bike Technical
Topic: Q100H vs SWXH
Replies: 7
Views: 217

Re: Q100H vs SWXH

I mean to say that the no-load speed is around 25 mph. Yes, for a 260 mini, a no-load of 25 mph is about right. A couple of mph is lost in the real world. Motomech's comment about the H outpulling the C is exactly what I meant when asking about torque - given the same conditions, does the Q100H or ...
by motomech
Apr 05 2019 9:43am
Forum: E-Bike Technical
Topic: Q100H vs SWXH
Replies: 7
Views: 217

Re: Q100H vs SWXH

I don't think his Dad wants to go 25 mph, the poster just thought the 260 motors on 48 Volts would do that.
by motomech
Apr 05 2019 2:52am
Forum: E-Bike Technical
Topic: Q100H vs SWXH
Replies: 7
Views: 217

Re: Q100H vs SWXH

The Q100H is not capable of taking 30% more power than the Q100C. When the H came out, the maker claimed that the H could take 30% more power than the standard, but it wasn't true, more like 10 to 15% more. Look, forget the torque thing. There are graphs from the factory on the sales sites, but they...
by motomech
Apr 04 2019 7:51pm
Forum: E-Bike Technical
Topic: Q100H vs SWXH
Replies: 7
Views: 217

Re: Q100H vs SWXH

A Q100 (260 rpm @ 36 Volts rated speed)on 48 Volts in a 26" whl. will top out around 23 mph(No pedal, flat no wind). Does anybody know how each of these would handle 20 amps? Yes, they will. Will the SWXH overheat? I suppose they could be made to do so. In general, mini hub motors, if forced to clim...
by motomech
Mar 31 2019 6:44pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Giant Trance X1 build for MAX range
Replies: 23
Views: 1457

Re: Giant Trance X1 build for MAX range

All the low-profile, closed block read tires are going to feel about the same on hard pack, which is to say, pretty good. The low profile, open tread(more like nubs, rather than knobs) would be better, but they wear too fast on black top. It's everything else, sand, mud, etc where they suck and full...
by motomech
Mar 31 2019 3:49pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Giant Trance X1 build for MAX range
Replies: 23
Views: 1457

Re: Giant Trance X1 build for MAX range

He may have mounted the tires so the writing is on the other side. Years ago, I got a smoking deal on the already cheap 2.4" Holly Rollers and bought 6 of them. I still run them on the frt., but they were prone to flats on the rear. The actual carcass is wafer thin and spines and thorns would go bet...
by motomech
Mar 28 2019 12:21pm
Forum: E-Bike General Discussion
Topic: First Build - Is this bike a good test subject
Replies: 23
Views: 450

Re: First Build - Is this bike a good test subject

If you don't want to go fast or, I presume, do serious off-roading, why do you need a "Big motor"? Or for that matter, even a mid-drive? You could run 1500 Watts(1000 watts is mini-motor power)thru a mid-sized geared hub motor, like a MAC, and get the performance you want with a simpler, more reliab...
by motomech
Mar 27 2019 5:02pm
Forum: E-Bike General Discussion
Topic: Q100H Front Motor build for wife question
Replies: 10
Views: 181

Re: Q100H Front Motor build for wife question

Your wife is French and 6 ft??
Forget your profile and post a pic of her!
by motomech
Mar 27 2019 4:26pm
Forum: E-Bike General Discussion
Topic: Q100H Front Motor build for wife question
Replies: 10
Views: 181

Re: Q100H Front Motor build for wife question

Wow, I just looked at the second bike you linked. That makes the most sense I think. I mean after you buy the first bike and all the ebike stuff, it probably would be close to a grand. And those tires would be a lot better for ebiking. Not to mention what your time is worth. She might say it won't p...
by motomech
Mar 27 2019 4:18pm
Forum: E-Bike General Discussion
Topic: Q100H Front Motor build for wife question
Replies: 10
Views: 181

Re: Q100H Front Motor build for wife question

So to recap, go w/ your original plan; Q100 201, but with the 48 Volt intergrated batt./controller to bring the speed up a bit.
by motomech
Mar 27 2019 4:14pm
Forum: E-Bike General Discussion
Topic: Q100H Front Motor build for wife question
Replies: 10
Views: 181

Re: Q100H Front Motor build for wife question

No no, the Q100 will get to 20 plus mph. I'm talking about using the 48 V batt. The 201 w/ the BIG whl.s, the 260 w/ 26" or smaller. The suspension fork idea is because my ex used to complain that her wrists got sore when we used to ride dirt bikes. Don't want to sound sexist, but arm strength is th...
by motomech
Mar 27 2019 2:00pm
Forum: E-Bike General Discussion
Topic: Q100H Front Motor build for wife question
Replies: 10
Views: 181

Re: Q100H Front Motor build for wife question

Assuming you will be riding together, do you want to build her a bike slower than yours? She may think she doesn't want to go 20 mph now, but as she gets time on it, I would imagine she would be comfortable doing that speed. I've built several 18 mph Q100's and they were just to slow anywhere other ...
by motomech
Mar 20 2019 10:50pm
Forum: E-Bike Technical
Topic: Building a light ebike with Q100 motor : advices ?
Replies: 14
Views: 472

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.