Search found 100 matches

by Scottyf
Apr 01 2012 2:55am
Forum: E-Bike General Discussion
Topic: Shipping Update - Ordered a Bafang 48v500w but got this
Replies: 10
Views: 1169

Re: Ordered a Bafang 48v500w from BMSBattery but go this

cwah wrote:How come they sometime send the bpm2 and sometine the bpm1?
Because it's china and they will send anything to fulfill an order.
by Scottyf
Mar 31 2012 11:51am
Forum: E-Bike Technical
Topic: Conhismotor going reverse with lyen controller
Replies: 23
Views: 1982

Re: Conhismotor going reverse with lyen controller

Try changing a one of the phase wires round. The same goes for the halls.
by Scottyf
Mar 31 2012 11:41am
Forum: E-Bike General Discussion
Topic: Rucksack battery advantages.
Replies: 31
Views: 1976

Re: Rucksack battery advantages.

I think it can be done with those coil wires like daahub kits use. Keeping the controller on the bike and just wiring the battery (2 wires) from the battery pack to the bike. I know my bag isn't the right sort but it was avaliablemand easy and I wasn't bothered about it. I always make sure it's stra...
by Scottyf
Mar 31 2012 7:27am
Forum: E-Bike General Discussion
Topic: Rucksack battery advantages.
Replies: 31
Views: 1976

Re: Rucksack battery advantages.

Heres some pictures I took just. http://i558.photobucket.com/albums/ss30/scottfarnham/bc49119f.jpg http://i558.photobucket.com/albums/ss30/scottfarnham/02d6d602.jpg http://i558.photobucket.com/albums/ss30/scottfarnham/cd55a553.jpg Not the most technical but it works. Batteries go in the main part an...
by Scottyf
Mar 31 2012 7:19am
Forum: E-Bike General Discussion
Topic: Rucksack battery advantages.
Replies: 31
Views: 1976

Re: Rucksack battery advantages.

Jerry uses a similar method to what you after.
I wanted the bike to still stay like a bike on the odd occasion I don't use the electric side of the bike.
This is why I kept the battery and controller off the bike.

I didn't like the rear rack as it up set the balance of the bike.
by Scottyf
Mar 31 2012 7:03am
Forum: E-Bike General Discussion
Topic: Rucksack battery advantages.
Replies: 31
Views: 1976

Re: Rucksack battery advantages.

I just used an old inner tube that I punctured and repaired. I have quite a few lying about and so thought I'd use it. Before that I just used insulation electrical tape to create a loom. The cut off is just a shorter valve that if pulled disconnects first before the main cable gets pulled. Most pow...
by Scottyf
Mar 31 2012 6:47am
Forum: E-Bike General Discussion
Topic: Rucksack battery advantages.
Replies: 31
Views: 1976

Re: Rucksack battery advantages.

Cwah I just used my old reebok back pack I've had since I was 14, the bags about 13 years old. I poked a few holed in it to run cables from the battery packs in the main area. To the controller which is in one of the pockets. This then runs quite thick gauge cables and powerpoles to the bike. I've s...
by Scottyf
Mar 18 2012 2:15am
Forum: E-Bike General Discussion
Topic: Bafang Bpm, how many RPM?
Replies: 126
Views: 40866

Re: Bafang Bpm, how many RPM?

Pretty much bang on russel. The winds are the same. The stamp on the outside changes. But the kv is the same. It would be better to have rpm per volt as you've said though. But I guess it's more difficult for Joe public to perceive that as real world speed. It also doesn't give you any torque figures.
by Scottyf
Mar 16 2012 9:44am
Forum: E-Bike General Discussion
Topic: Why must the battery even be on the bike at all?
Replies: 36
Views: 3662

Re: Why must the battery even be on the bike at all?

Hello Jerry, I used exactly the same setup with that Maplins connector. Worked for about 3 months in the rain etc and 2.2kw though it untill it eventually died. Still it was worth it for testing methods. That and as a connector it wasn't really meant to have that wattage chucked at it. I use a backp...
by Scottyf
Mar 13 2012 9:24am
Forum: E-Bike General Discussion
Topic: Bafang Bpm, how many RPM?
Replies: 126
Views: 40866

Re: Bafang Bpm, how many RPM?

A front wheeled setup with a high powered gear motor is just asking for trouble as you've found out. You need good solid torque arm's to avoid those problems. The rear ones are usually stronger as standard on most bikes. Sorry to see you broke it but you really needed torque arm's on this kind of se...
by Scottyf
Mar 06 2012 4:07pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Bafang BPM Marin Build
Replies: 11
Views: 1691

Re: Bafang BPM Marin Build

I've ran my bpm @ 66v nominal. But it's a code 12. This was in. 700c wheel. I don't use a speedo but know roughly my cadence is along the lines for 35mph+ but my gears are only 48 front 14 rear so my legs spin out before it reaches that speed. It scary so only run it at 44v for commuting. It's proba...
by Scottyf
Mar 01 2012 4:05am
Forum: E-Bike Reviews & Testing
Topic: My experience bulk charging lipo with BMS 400w charger
Replies: 7
Views: 1936

Re: My experience bulk charging lipo with BMS 400w charger

Just wondering if the smaller 240w bulk chargers also have a pot in them if anyone else know's? I have a feeling their not but would be interested to know. Might have to buy another bulk charger for my needs as there quite a bit simpler for charging 9 lipo bricks... Just wondering as the 240w charge...
by Scottyf
Feb 28 2012 8:25am
Forum: E-Bike General Discussion
Topic: How many of you feel safe riding in a good rain?
Replies: 11
Views: 1481

Re: How many of you feel safe riding in a good rain?

In the UK through my first winter I had some issues. I connect the hub motor up though to my backpack where the batteries and controller are. I used Powerpoles and pleny of insulation tape. This worked for light showers but occasionaly got soaked. I also have no mudguards as they just annoy me. Even...
by Scottyf
Feb 25 2012 4:33am
Forum: E-Bike General Discussion
Topic: Hobbie or a Tool ?
Replies: 27
Views: 1819

Re: Hobbie or a Tool ?

A tool, commuting wise. It's not the prettiest, fastest or quietest. But it does allow mento do a 22mile round trip for pennies. So much so that I no longer use a car and it's saved me £2200 in the first year alone. So it paid for itself in 6months really. I'll continue to commute with it in the fut...
by Scottyf
Feb 24 2012 11:01am
Forum: E-Bike General Discussion
Topic: my first build: brompton at 30 mph
Replies: 75
Views: 5415

Re: my first build: brompton at 30 mph

Indeed Dave is correct. As the bike is steel you can find lots of local places that will be very good at making and welding new joints. This will make the bromton very strong. But you need to know what your asking. Even if your not i've always found new projects and things that are quirky really ins...
by Scottyf
Feb 23 2012 4:30pm
Forum: E-Bike General Discussion
Topic: Bafang Bpm, how many RPM?
Replies: 126
Views: 40866

Re: Bafang Bpm, how many RPM?

If you contact bafang directly you can get what ever you like. But it will cost a little more than bmsbattery.
It's worth noting. They do single orders but it's obviously expensive and they will only supply the motor. Not laced etc.
by Scottyf
Feb 23 2012 1:41pm
Forum: E-Bike General Discussion
Topic: Bafang Bpm, how many RPM?
Replies: 126
Views: 40866

Re: Bafang Bpm, how many RPM?

When myself and D8veh brought our bpm's from bmsbattery you could specify a wind to your requirement. It was slower to get the motors but you had what you wanted. Now they only do 4 winds and that's it. Either a high speed or high torque. No inbetween winds. I also have the code 12 @ 36v which is in...
by Scottyf
Feb 23 2012 10:56am
Forum: E-Bike General Discussion
Topic: my first build: brompton at 30 mph
Replies: 75
Views: 5415

Re: my first build: brompton at 30 mph

Maybe wait till you have the motor in your hand before monkeying about with the drop outs...

Butane torch you can usually get for under £10 at a local hardware store. Worst comes to worst B&Q will have one.
The car jack is about the best idea with the heat.
by Scottyf
Feb 21 2012 1:34pm
Forum: E-Bike General Discussion
Topic: Gas Prices Rising Fast
Replies: 340
Views: 19650

Re: Gas Prices Rising Fast

Can I move to the USA =-)
Least somewhere hot and with your infastructure. Owning an Ebike there looks awesome.

UK is shit. :mrgreen:
by Scottyf
Feb 20 2012 2:44pm
Forum: E-Bike General Discussion
Topic: MP3 torque: Is it good or not?
Replies: 16
Views: 1571

Re: MP3 torque: Is it good or not?

Why would it melt?
People run the geared small hubs at 20amp, they don't shed heat as well and work fine and there geared.

Have you tried?!?
Most rated motors will take at least 3 times what there rated for.
by Scottyf
Feb 20 2012 11:02am
Forum: E-Bike General Discussion
Topic: MP3 torque: Is it good or not?
Replies: 16
Views: 1571

Re: MP3 torque: Is it good or not?

I think we've all noticed. Pick one. The magic Pie will be heavy. But fast. Geared Motor - Lighter, more torque. Sheds heat slower - can't be overvolted as high. (I'm running a geared motor up to 500rpm sensorless) which is a wind for 20mph in a 24 inch wheel. Apart from mines in a 28inch wheel. I t...
by Scottyf
Feb 20 2012 8:18am
Forum: E-Bike Technical
Topic: Noob question re lipo charging
Replies: 14
Views: 1499

Re: Noob question re lipo charging

Probably best to get a cheaper 6s Lipo Balancer. Even a 50w Dual power one will be ok (Although slow) to balance each individual pack. There all pretty cheap and even in the UK from a UK supplier they cost about £40. In the USA it will be much cheaper. An even cheaper from Hobby King. There handy to...
by Scottyf
Feb 20 2012 8:10am
Forum: E-Bike General Discussion
Topic: MP3 torque: Is it good or not?
Replies: 16
Views: 1571

Re: MP3 torque: Is it good or not?

So is it more torquy only because it's able to handle more amps without melting? YES People put alot more than 20amps through a MP direct Drive hub. Most put double that to get it shifting. Check out the geared hubbies. THese create much more torque at the same amperage. http://endless-sphere.com/fo...
by Scottyf
Feb 11 2012 2:49am
Forum: E-Bike General Discussion
Topic: Speedict Ebike - Anybody seen/tried this?
Replies: 1333
Views: 156579

Re: Speedict Ebike - Anybody seen/tried this?

I wish this was available on iPhone! :|
by Scottyf
Feb 10 2012 6:25am
Forum: E-Bike General Discussion
Topic: Bafang BPM II
Replies: 44
Views: 9502

Re: Bafang BPM II

Link? Would be interested to know who these 'most' people are. Seals are ok, better than any other hub motor I know of. If you watch carefully Justin's presentation you will realise that seals are not a problem. The axle support on the RHS is poorly designed - mine snapped.. when hit by a car at 80...