Endless Sphere

"Flat guard" tires are worth their weight in gold on an Ebike. The one thing I didn't like was the "squirmy" feeling the belt imparted to the rider on the Schwable and Forte tires I used in the past. But recently, I switched to the WTB Thickslicks, which have a thinner thread and feel almost like re...

I just re-read your post and it seems to me that you have no choice except to use both batteries. W/ only a 20 Amp discharge rate, you will have to limit the controller(or other means, like a Cycle Analyst) to prevent the batteries's BMS from kicking in and 20 Amps is not enough , considering what y...

I have been using 2WD for years and I use 2 complete systems, that is 2 throttles, 2 controllers and 2 battery packs and it has saved me a long walk on several occassions. But that is not the main reason I use 2 packs(I use LiPoly). To explain that, I need to explain what has been the biggest benef...

The parts stockpiling begins, welcome to the World of Ebike building :D If you want, we can go over how to open that motor. What makes it difficult to unscrew the cover is that the act of pedaling the bike tends to tighten it. Also, if you order anything from BMS Battery, add a couple of 9-pin conne...

Don't these "smart controller w/ displays" read the initial Voltage when the pack/battery is connected? Has anyone tried this w/ a dis-charged batt. to a value approximating a 48 V batt. and see what happens?

lovelock wrote; Hey, thanks for the lengthy response on my post about a potential broken connection on the q128c. I'm eyeing up a new project but this time want to go for a single speed conversion. Do you know much about the q128h? I've really enjoyed the smooth and quietness of the 'c' so would lik...

Here is one I made out of a hand-truck. Two years later and it still works great;
viewtopic.php?f=3&t=86115&p=1341690&hil ... y#p1341690

Are you talking about the 9-pin mini connector? It sounds like one or more of the phase pins has broken down inside the connector molding. Unfortunately, the "male" part of the connector runs in to the motor so there are two options to ck the 'continuity", neither great. You could remove the cover o...

2 miles per amp-hour just means the rider is just hardly ever giving any power and using leg power all the time. And the power would have to be given not going up any hills, but using it on flats. http://www.ebikes.ca/learn/batteries.html 1.609344 kilometers = 1 mile Motor Type Rough energy usage M...

Donn wrote; .... it would help to know how many volts behind that. Sorry, w/out knowing the Volts of the system, Amps per hour(as you point out) doesn't mean a whole lot. Almost all my systems have been 12S LiPoly(46.5 Volts nominal), either Turnigy 20C or 25C, or the Multistar 10C. The motor/wheel ...

Although technically not totally correct, I go by miles per Amp hour. I use LiPoly which discharges in a very linear fashion and after the first couple of years I ditched the Cycle Analyst(good leaning tool)and only carry a Voltmeter. For many years now, I get between 1 1/2 to 2 miles per Amp hour(t...

Those are some pretty serious forks and I doubt anyone here has any experience w/ them. W/ almost 7 inches of travel, they might even be overkill for the street. If the fork/wheel combo doesn't change the bike's geometry, they should be ok and provide a plush ride. http://www.mtbr.com/product/older-...

toureasyman wrote;

The Jumbo Shark battery from EM3EV is rated at 52V, 14.8 amp hours. I'm thinking that should be enough power to get me through the touring day.

Somebody call Guinness.

Also, to go 75 miles on one charge would require between 37 to 50 Amp hours of capacity, a very heavy pack indeed. Since most riders would take a break somewhere along the line, limiting the pack to 30 Amp hours or so and carrying an on-board charger would probably be a better approach. The Mean Wel...

I recently bought a long wheelbase recumbent touring bike I wish to outfit with Ebike components. I will be using for loaded touring on the east coast, so lots of hills. I decided on a Mac 10T or 12T geared hub for 700c rear and jumbo shark 52v battery from e3emv.com. Bike weight and gear plus my w...

Well, according to the Ebike CA sim. you should be able to maintain at least 12 mph on a 10% grade. That is calculated w/ the rider inputting 100 Watts. Motor rpm would fall to 146 rpm from a max of 243 rpm, so it should be doable. Getting a run at it deffinately helps. It can't hurt to try as long ...

Lab testing of the Q100C has documented that it has the capability of pulling the wings off a butterfly. But seriously, electric motors and not like internal combustion engines and it is not a simple matter of putting one on a dyno and measuring X amount of foot-pounds. One needs to consider the SYS...

You want; Option A: Adjustable Output via Potentiometer Voltage: Suffix 48A-Adjustable range: 41.8V to 53.5V Suffix 54A-Adjustable range: 47.8V to 59.5V 48A-12S and below 54A-12S and above NOTE: Minimum Voltage of 54A(47.8V) is a little high for storage Voltage for 12S(4.00V/cell), so one has to man...

Over the years here, there have been many reports of balance chargers failing when used as opportunity chargers. Appearently, they aren't designed to hold up to the rigors of the road. The Mean Well HLG series is potted to prevent it's insides from giggling apart and while admittingly, they are a se...

Multistar LiPos can be incredible batteries if managed correctly. I found this video on YouTube that helped me tremendously. https://youtu.be/4i_4_DcZTWE Since watching this video, I've purchased multiple items from Barent at WCEC, and wired up a 20S LiPo harness. I ride my ebike every day, monitor...

Hello everyone. A couple years ago I purchased a used Recumbent Trike (WizWheelz Zoomer - Pre-TerraTrike). This trike came with a BMC V3 motor in the rear 26" wheel. Attached to it is a 12 x 4110 MOSFET Extreme Modder Controller LYEN Edition and a Cycle Analyst V2.4. With the trike came 8 Turnigy 5...

My main pack is 4) Multistar 6S/10,000mAh bricks configured 2S/2P for a 12S(46.5V nom.)/20,000mAh pack. They are currently on sale @ HK for $75 delivered, making my total cost $300. You are right, though, those 10 ah packs are really cheap! I'd been looking at the 16 Ah and 20 aH ones.... I'm guess...

I think the huge advantage here is if they have a functional balancing circuit! That would allow bulk charging of the series string of LiPos on the bike using a standard ebike charger. I would vastly prefer that then having to take the batteries off the bike every day when commuting... Perhaps I wa...

My main pack is 4) Multistar 6S/10,000mAh bricks configured 2S/2P for a 12S(46.5V nom.)/20,000mAh pack. They are currently on sale @ HK for $75 delivered, making my total cost $300. To duplicate w/ these "smart" bricks, I would need 4 of these; https://www.genstattu.com/tattu-plus-10000mah-22-2v-25c...

You don't need to limit your selection over mech. brakes or the delraileur shift range. The ebrake kit levers are total garbage and you don't want to use them anyway. Although I don't have a problem w/ mech disc.s. It's easy to add a reed switch and magnet to any hydro lever/perch. And the 7-speed c...