Best LEGAL 250 w hub motor for hills for DIY

[1boris]

Is it still the Bafang Bpm/cst 250w?

 

[Deleted member 4366]

Simple question, but complicated answer. Every motor is different and has plusses and minuses.For best climbing you want a slow wound motor and higher voltage. The 48v Xiongda is like a winch. That brings the next question of what is legal. I'm sure that if you ask Xiongda nicely, they'll give you a 250w certificate.

The Q128 is also pretty good at 48v, especially the 48v 201 rpm one. Some would say that it's an 800w motor, but it's the same size and shape as any normal 250w hub-motor, like the one used on the Cyclamatic. It has a llabel that's easy to peel off.

 

[Nealh]

My silly sticky label peeled off on my Q128C and now sports this small tiny plaque.
Quite nice for £2.99, only problem is the slight spelling mistakes .

 

[tommie]

Well now,

doesn`t that look remarkably similar to the one i found on my BBS HD motor!

 

[1boris]

After more thinking I belive it has to be the 250w Ezee motor.it comes with a certificate.
The Xiongda 48v vould be the best but Bonnie told me before she could mark the motors 48v 250w .but they only had an En 15194 certificate for the 24/36 volt versions.
also the Bafang swx02 should be good,but i havent seen it as a diy kit anyplace.

 

[Nealh]

Woosh sell 250w SWX02 kit.

 

[1boris]

Woosh sell 250w SWX02 kit.

havent seen that kit on woosh site before.Nice kit

 

[John_S]

A 48v 250w BPM motor with the lowest available winding speed (code 16 I believe) would be an excellent choice for hill climbing. I'm not sure how easy this motor would be to obtain though. All the 48v BPMs I've seen anywhere online are all rated 500w, and it seems to be difficult to request a specific winding speed from most sellers.
A 48v Q128h at 201 rpm would also provide for excellent hill climbing, although this motor is rated 800w. However, it is the same size as most legal motors, and the 800w label on it can be easily peeled off.

 

[Woosh]

A 48v 250w BPM motor with the lowest available winding speed

I am bringing in switchable 36V/48V kits, one of them is 250W BPM, later this month.

 

[spanos]

My silly sticky label peeled off on my Q128C and now sports this small tiny plaque.
Quite nice for £2.99, only problem is the slight spelling mistakes .
View attachment 21546

Bargain, might I ask where from ?

 

[Nealh]

Bargain, might I ask where from ?

Hi Kirstin,
Ebay of course, I will find the link. As you can see up to 4 lines of engraving approx. 20ish letters max per line. Delivery is 4 days, you have to order the plaque then message the seller with your engraving details.

http://www.ebay.co.uk/itm/ENGRAVED-TROPHY-PLAQUE-Name-Plate-BRASS-SILVER-self-adhesive-label-25mm-x-50mm/182778421757?ssPageName=STRK:MEBIDX:IT&var=690092624707&_trksid=p2057872.m2749.l2649

 

[spanos]

Hi Kirstin,
Ebay of course, I will find the link. As you can see up to 4 lines of engraving approx. 20ish letters max per line. Delivery is 4 days, you have to order the plaque then message the seller with your engraving details.

http://www.ebay.co.uk/itm/ENGRAVED-TROPHY-PLAQUE-Name-Plate-BRASS-SILVER-self-adhesive-label-25mm-x-50mm/182778421757?ssPageName=STRK:MEBIDX:IT&var=690092624707&_trksid=p2057872.m2749.l2649

But of course!

Though I couldn't find one so thanks for the link mate!

Btw - don't spelling errors make it more rather than less authentic !

 

[anotherkiwi]

Here you go spanos: https://en.wikipedia.org/wiki/Chinglish j

 

[John_S]

I am bringing in switchable 36V/48V kits, one of them is 250W BPM, later this month.

Oh that's cool. When your kits arrive, I might buy your 48V BPM one to upgrade my 36V Big Bear bike.

 

[davidg]

Is it still the Bafang Bpm/cst 250w?

On road, off road?
At what gradient? speed?
My 250 watt GS Moon will climb hills round here ok (10% grade, 1000 meters vertical, 18 kph) without overheating, the battery doesn't like it much though.

 

[Spaceystud]

I am bringing in switchable 36V/48V kits, one of them is 250W BPM, later this month.

Did these kits arrive yet?

 

[minexplorer]

Wow not a single mention of the bafang bbsxx midrive kits.Thought they were supposed to be the all round best choice for hills,price and reliability.Never saw any of these others when i was looking into kits.Must have been in my adhd hyper focus mood lol.

 

[Woosh]

Did these kits arrive yet?

I have the Bafang 48V SWX02 kit in stock but it is not switchable.
http://wooshbikes.co.uk/?hubkits

 

[Woosh]

Thought they were supposed to be the all round best choice for hills,price and reliability.

that honour should be bestowed onto the Bafang SWX02 or BPM geared hub motors.

 

[Deleted member 4366]

Wow not a single mention of the bafang bbsxx midrive kits.Thought they were supposed to be the all round best choice for hills,price and reliability.Never saw any of these others when i was looking into kits.Must have been in my adhd hyper focus mood lol.

They're good for heavy off-road stuff.

They're a bit too powerful for the drive-train, so you can expect to do some repairs to that from time to time, plus their controllers have a nasty habit of expiring without any obvious cause at some point in their life.

They're quite good fun to play with, but I wouldn't want to use one for a long daily commute.

Their extra power means that you need a good (i.e. expensive, though cheap compared with a Bosch or Yamaha one) battery. That battery will be relatively heavy, so the heavy motor and battery detract from what makes riding a bicycle good.