Search found 3209 matches

by motomech
Aug 22 2018 2:04pm
Forum: E-Bike General Discussion
Topic: Loving the ebike life but wishing for a full suspension bike...
Replies: 149
Views: 6705

Re: Loving the ebike life but wishing for a full suspension bike...

"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...
by motomech
Aug 22 2018 1:47pm
Forum: E-Bike Technical
Topic: 2wd one battery per motor or 1 battery for both?
Replies: 8
Views: 309

Re: 2wd one battery per motor or 1 battery for both?

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...
by motomech
Aug 22 2018 1:26pm
Forum: E-Bike Technical
Topic: 2wd one battery per motor or 1 battery for both?
Replies: 8
Views: 309

Re: 2wd one battery per motor or 1 battery for both?

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...
by motomech
Aug 22 2018 9:49am
Forum: E-Bike Technical
Topic: Q128C Cutting out since knocked / bent connectors
Replies: 8
Views: 334

Re: Q128C Cutting out since knocked / bent connectors

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...
by motomech
Aug 21 2018 7:50pm
Forum: E-Bike General Discussion
Topic: 52V = PITA
Replies: 15
Views: 540

Re: 52V = PITA

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?
by motomech
Aug 21 2018 1:42pm
Forum: E-Bike Technical
Topic: Q128C Cutting out since knocked / bent connectors
Replies: 8
Views: 334

Re: Q128C Cutting out since knocked / bent connectors

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...
by motomech
Aug 21 2018 12:03pm
Forum: E-Bike General Discussion
Topic: Proper setup for touring?
Replies: 54
Views: 1613

Re: Proper setup for touring?

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
by motomech
Aug 20 2018 10:22pm
Forum: E-Bike Technical
Topic: Q128C Cutting out since knocked / bent connectors
Replies: 8
Views: 334

Re: Q128C Cutting out since knocked / bent connectors

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...
by motomech
Aug 20 2018 6:43pm
Forum: E-Bike General Discussion
Topic: Proper setup for touring?
Replies: 54
Views: 1613

Re: Proper setup for touring?

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...
by motomech
Aug 20 2018 2:41pm
Forum: E-Bike General Discussion
Topic: Proper setup for touring?
Replies: 54
Views: 1613

Re: Proper setup for touring?

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 ...
by motomech
Aug 20 2018 2:58am
Forum: E-Bike General Discussion
Topic: Proper setup for touring?
Replies: 54
Views: 1613

Re: Proper setup for touring?

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...
by motomech
Aug 19 2018 11:07pm
Forum: E-Bike General Discussion
Topic: MANITOU SHERMAN SLIDER PLUS spv 170. opinions?
Replies: 9
Views: 369

Re: MANITOU SHERMAN SLIDER PLUS spv 170. opinions?

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-...
by motomech
Aug 19 2018 10:54pm
Forum: E-Bike General Discussion
Topic: Proper setup for touring?
Replies: 54
Views: 1613

Re: Proper setup for touring?

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.
by motomech
Aug 19 2018 4:12am
Forum: E-Bike General Discussion
Topic: Proper setup for touring?
Replies: 54
Views: 1613

Re: Proper setup for touring?

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...
by motomech
Aug 19 2018 4:01am
Forum: E-Bike General Discussion
Topic: Proper setup for touring?
Replies: 54
Views: 1613

Re: Proper setup for touring?

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...
by motomech
Aug 02 2018 11:26am
Forum: Motor Technology
Topic: CST100 motor specs
Replies: 6
Views: 531

Re: CST100 motor specs

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 ...
by motomech
Aug 01 2018 11:19am
Forum: Motor Technology
Topic: CST100 motor specs
Replies: 6
Views: 531

Re: CST100 motor specs

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...
by motomech
Jul 29 2018 10:38am
Forum: E-Bike General Discussion
Topic: Lipo Battery Help + Solar Charging
Replies: 32
Views: 825

Re: Lipo Battery Help + Solar Charging

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...
by motomech
Jul 28 2018 9:52pm
Forum: E-Bike General Discussion
Topic: Lipo Battery Help + Solar Charging
Replies: 32
Views: 825

Re: Lipo Battery Help + Solar Charging

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...
by motomech
Jul 28 2018 12:54pm
Forum: E-Bike General Discussion
Topic: Lipo Battery Help + Solar Charging
Replies: 32
Views: 825

Re: Lipo Battery Help + Solar Charging

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...
by motomech
Jul 27 2018 4:01pm
Forum: E-Bike General Discussion
Topic: Lipo Battery Help + Solar Charging
Replies: 32
Views: 825

Re: Lipo Battery Help + Solar Charging

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...
by motomech
Jul 16 2018 9:37pm
Forum: Battery Technology
Topic: Lipo with Integrated BMS
Replies: 11
Views: 388

Re: Lipo with Integrated BMS

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...
by motomech
Jul 16 2018 6:33pm
Forum: Battery Technology
Topic: Lipo with Integrated BMS
Replies: 11
Views: 388

Re: Lipo with Integrated BMS

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...
by motomech
Jul 16 2018 12:21pm
Forum: Battery Technology
Topic: Lipo with Integrated BMS
Replies: 11
Views: 388

Re: Lipo with Integrated BMS

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...
by motomech
Jul 13 2018 1:42am
Forum: E-Bike General Discussion
Topic: What bike to convert? Already have parts
Replies: 4
Views: 280

Re: What bike to convert? Already have parts

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...