Search found 398 matches

by qwerkus
Oct 12 2019 4:47pm
Forum: E-Bike Non-hub Motor Drives
Topic: Most quiet e-bike motor?
Replies: 17
Views: 539

Re: Most quiet e-bike motor?

Love the idea, but I think it would be a whole lot more efficient if you put a flywheel in the system... This would even out the generators power input, and make it easier to setup a speed at which it runs silent. DD is the way to go; IIRC there is a small 9c hub that would be just perfect.
by qwerkus
Oct 12 2019 1:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 266
Views: 12337

Re: High performance & durability Cannondale Semi Recumbent

Yeah thankfully all that shit is in the rear view mirror now and i've found a partner that is loads better as a person, and is cuter.. :banana: I figured that fork thing would not work out, but at least you tried. I don't know what to do with the fork on this bike, other than just stick the biggest...
by qwerkus
Oct 10 2019 3:36pm
Forum: E-Bike Technical
Topic: Help with Kt controller
Replies: 5
Views: 151

Re: Help with Kt controller

Or it could be just mismatched phases, no ?
by qwerkus
Oct 09 2019 10:19am
Forum: E-Bike Technical
Topic: Help with Kt controller
Replies: 5
Views: 151

Re: Help with Kt controller

Pictures ? Why would you need to jump the brakes ? Should work fine left open.
by qwerkus
Oct 04 2019 10:40am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1822

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

And 110 USD if I take into account the delivery to France (more expensive for the heavier RH212). If you live in France, you can get your stuff from Ozo: https://ozo-electric.com/en/rear-wheel-hub-motor-bike/140-direct-drive-motor-1000w-1500w-rh212.html They don't have the GMAC (yet) but seem to ca...
by qwerkus
Sep 26 2019 2:28pm
Forum: E-Bike Build Threads / Photos & Video
Topic: BBS02 hill climber commuter
Replies: 12
Views: 1021

Re: BBS02 hill climber commuter

Nice work, the bike looks good! I just noticed that you have Super Moto-X tires, which I just installed on the 20" front of my recumbent this weekend. Any thoughts on them? Used on gravel at all? Great tires! In fact, I will mount them on the sachs bike too. Durable and puncture resistant (at least...
by qwerkus
Sep 26 2019 2:22pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 266
Views: 12337

Re: High performance & durability Cannondale Semi Recumbent

Me and my wife split but were living together for a while. For some time, the feeling was mutual and everything was cool. Then she started emotionally terrorizing me and told me she was bringing in another man into the house... "a friend" to help her go through her stuff, and warned that if i didn'...
by qwerkus
Sep 21 2019 1:32pm
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 50
Views: 4110

Re: 2019 Motor Simulator, Mid-drives and other updates

The 27.5x2.8 has the highest load carrying capacity of any of the Super Moto-X tires...not sure exactly what you mean by "strong'. The smaller you go with the diameter the smaller the footprint is for a given width...so I tend to stay away from 20" tires but I could use a 24x3.00 Super Moto-X :D . ...
by qwerkus
Sep 18 2019 11:57am
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 50
Views: 4110

Re: 2019 Motor Simulator, Mid-drives and other updates

The tire is a Schwalbe Super Moto-X 27.5x2.8 and is ECE-R75 certified for 50 KPH...it also has the highest load carrying capacity of any ECE-R75 tire I could find so IMO the best "bicycle" tire made for an ebike. I agree that super moto are great tires. Though the 2.4" version is stronger than the ...
by qwerkus
Sep 16 2019 10:46am
Forum: E-Bike General Discussion
Topic: Hub motor shell split in half.
Replies: 22
Views: 621

Re: Hub motor shell split in half.

I'd need 2x 14mm hose clamps, around 220mm diameter. Found 12mm ones. Not convinced by this option though. Are you sure 2 thin stainless steel bands can withstand the tension of 36 butted spokes ? Methinks spoke tension will just stretch the clamps and open the gap further. The back iron ring seems ...
by qwerkus
Sep 16 2019 10:39am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1822

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

I don't really care about climbing capabilities, I live near the ocean in a very flat area, the maximum altitude in a 50 km radius around my home should be 50m ;) Should have started there. On flat terrain, almost any hub will work fine. I'd get a 27mm DD. Cheaper and offers Regen. 2Kg heavier. But...
by qwerkus
Sep 15 2019 7:09am
Forum: E-Bike General Discussion
Topic: Hub motor shell split in half.
Replies: 22
Views: 621

Re: Hub motor shell split in half.

miro13car wrote:
Sep 14 2019 2:47pm
good that it broke during lacing
instead
braking during riding
QC is job #1 in China brand factory LOL.
Totally true. My first reaction was: sh***t, $350 for nothing. The second one was: puuhh - glad it didn't happen when zipping down the hill!
by qwerkus
Sep 15 2019 7:00am
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 250
Views: 7655

Re: Hub motor industry dying?

I do onw thre s-Pedelec and drive them since 2014 in a city of 500,000 persons. Obviously money is not an issue for you... Insurance is only part of the story. To ride an s-pedelec, you need a simplified driving license in most countries = extra costs. And more importantly: you need a bike with leg...
by qwerkus
Sep 14 2019 1:49pm
Forum: E-Bike General Discussion
Topic: Hub motor shell split in half.
Replies: 22
Views: 621

Re: Hub motor shell split in half.

The design goal is 35mph/56kph without overheating. Not that I will travel quite that fast, but I still wanted some headroom at normal cruising speed. Wooooot - that's a fast moped you are building! Can't help with those, as all systems I build are designed for 30-35km/h cruising. ebikes.ca simulat...
by qwerkus
Sep 14 2019 1:08pm
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 250
Views: 7655

Re: Hub motor industry dying?

Super american answer. I respect your opinion, but can't agree with it. In regards to America vs Europe it should be mentioned that American infrastructure is built up around highways and European infrastructure is built in regards to horse/foot travel only to later adapt motorized use. Americans c...
by qwerkus
Sep 14 2019 12:58pm
Forum: E-Bike General Discussion
Topic: Hub motor shell split in half.
Replies: 22
Views: 621

Re: Hub motor shell split in half.

In Florida we don't have hills, unless you count bridges. The highest spot in the metro area, about 20 miles from us is a whopping 110 ft. I actually ordered a 26" wheel donor bike, but it was incorrectly advertised, and had 29" wheels when it showed up. Decided not to send it back. I purchased a n...
by qwerkus
Sep 14 2019 11:50am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1822

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

Thank you, but they don't propose the G360 on their AMazon store. Any other option ? Wouldn't recommend the G360. Its power density is less than a MAC, while more expensive than a mxus GDR-19. The only really nice thing is the potential for oil cooling, but I don't know how well it will work. If yo...
by qwerkus
Sep 14 2019 11:44am
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 250
Views: 7655

Re: Hub motor industry dying?

But the notion that we are going to get rid of cars any time in the near future is ridiculous. We might get rid or cars driven by humans and replace the majority with self-driving cars. We might seriously reduce car ownership with people moving to automated Uber or Uber-like services. But cars will...
by qwerkus
Sep 14 2019 11:33am
Forum: E-Bike General Discussion
Topic: Hub motor shell split in half.
Replies: 22
Views: 621

Re: Hub motor shell split in half.

I was planning to lace elbows 1/2 inside, 1/2 outside in an attempt to reduce the differential spoke tension required to offset the rim. Is that a bad idea? Never laced a wheel from scratch before, but have taken the wobbles out of many. Mine is going on a 29" MTB rim, so there will be a cross pull...
by qwerkus
Sep 13 2019 2:24pm
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 250
Views: 7655

Re: Hub motor industry dying?

If a Pedelec is to slow for you there are easy solutions: Just buy a Speed Pedeec and pay isurance for it (not expensive) and you are able to ride at 45km/h which is quite fast for a Bicycle type vehicle imho. if it is not fast enough buy an (electric ) motor cycle. For this you also need insurance...
by qwerkus
Sep 13 2019 2:04pm
Forum: E-Bike General Discussion
Topic: Hub motor shell split in half.
Replies: 22
Views: 621

Re: Hub motor shell split in half.

Are those 12 gauge spokes? Not even. Butted 14G. Since the spoke came in too long and I was lacing a fat rim anyway, I chose to lace them with elbows outwards - maybe that added even more stress? Yet I think Spoke tension has little to do with this crack since I wasn't even close to the usual tensi...
by qwerkus
Sep 13 2019 11:39am
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 50
Views: 4110

Re: 2019 Motor Simulator, Mid-drives and other updates

Interesting experiment. But doesn't distilled water act like a super oxidant ? Aren't you worried about corrosion ? I think you mean de-ionized water... Distilled water is the correct choice for a soluble coolant. the MoCool he's added provides rust inhibition, among other important attributes. Tha...
by qwerkus
Sep 13 2019 10:40am
Forum: Battery Technology
Topic: What aren't there threaded li-ion cells
Replies: 18
Views: 524

Re: What aren't there threaded li-ion cells

18650 cells are not designed to be easy of use, but to maximize volumetric power density (packing as much power as possible in the least possible volume)... How can you say that when cylindrical shapes waste over 21% of the volume they take up as dead unusable volume? How so ? Maybe if you arrange ...
by qwerkus
Sep 13 2019 10:35am
Forum: E-Bike General Discussion
Topic: Hub motor shell split in half.
Replies: 22
Views: 621

Hub motor shell split in half.

I was lacing a RH212 motor, when this happened: 11.jpg Motor shell literally split in half. Since it's the first time I witnessed this, I wonder if any of you had a similar experience. A careful inspection of the outer shell revealed many tiny pores in the shell, some of them more than 2mm deep. I s...
by qwerkus
Sep 13 2019 10:29am
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 50
Views: 4110

Re: 2019 Motor Simulator, Mid-drives and other updates

Justin...just came across this thread. Absolutely awesome...as usual, THANK YOU for adding the mid drive option. I have been playing with the Motor Simulator using the BBSHD motor a lot. It is great to be able to do a direct comparison of the BBSHD and the MAC/GMAC. Pretty amazing how much cooler t...