48v 250w motor

Electrically assisted bikes, trikes, etc.
89mrmark89
Posts: 3
Joined: 6 Jan 2020, 3:52pm

48v 250w motor

Postby 89mrmark89 » 6 Jan 2020, 3:56pm

Hi, I have two 48v batteries and I'm looking for Street legal convention kit.
I prefer mid drive since I have experience with bbs02b.

Perfectly I would go for bbs01 but unfortunately its 36v.

Can you recommend mi any alternatives?

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velorog
Posts: 82
Joined: 16 Apr 2011, 8:50pm
Location: East Yorkshire

Re: 48v 250w motor

Postby velorog » 6 Jan 2020, 4:48pm

BMS Battery list a 48V option for this motor.

https://bmsbattery.com/central-motor/89 ... oltage-48v

Don't know anything about it but judging by the model number it is probably made by Qute.

billym444
Posts: 64
Joined: 29 Sep 2019, 10:02pm

Re: 48v 250w motor

Postby billym444 » 6 Jan 2020, 5:30pm

not herd of them, but i think theres little out there on 48v 250w mid drives, shame.
big Bafang fan lol

billym444
Posts: 64
Joined: 29 Sep 2019, 10:02pm

Re: 48v 250w motor

Postby billym444 » 6 Jan 2020, 5:33pm

Tongsheng 48V 250W TSDZ2
big Bafang fan lol

CXRAndy
Posts: 50
Joined: 18 Aug 2019, 1:45pm

Re: 48v 250w motor

Postby CXRAndy » 6 Jan 2020, 7:02pm

If you buy the right TSDZ2, you can have 52V.

Less current, same power, cooler running :D

89mrmark89
Posts: 3
Joined: 6 Jan 2020, 3:52pm

Re: 48v 250w motor

Postby 89mrmark89 » 6 Jan 2020, 8:40pm

Thanks for all responses!

@velorog thanks for that but there is a very little info about that kit so I rather pass.

@billym444
Tdsz2 isn't bad option but I do not really want a motor with torque sensor because I want to ride as much effortless as possible but still need to keep it street legal so I won't use a throttle.

@CXRAndy I already have 2 48v batteries so it would not have much sense.

Can you recommend me alternatives as rear hub drive units with the same specification 250w 48v?

CXRAndy
Posts: 50
Joined: 18 Aug 2019, 1:45pm

Re: 48v 250w motor

Postby CXRAndy » 6 Jan 2020, 10:01pm

The Bafang do 48V but its not 250W. Its the BBS02.

hemo
Posts: 905
Joined: 16 Nov 2017, 5:40pm
Location: West Sussex

Re: 48v 250w motor

Postby hemo » 6 Jan 2020, 11:25pm

BBS clone by Aikema AKM 250w 48v mid drive, it has a 1:38 gearing ratio so should be easier to pedal unassisted if need be and outputs abut 576w, controller is 12a.

billym444
Posts: 64
Joined: 29 Sep 2019, 10:02pm

Re: 48v 250w motor

Postby billym444 » 7 Jan 2020, 10:25am

so little of subject. so if you have a 250w that can put out 576w then is it still uk road legal.

im also a tad shocked that bafang have not brought out a 250w 48v yet.

now i cant remeber its name. and modle and if some one please remind me, but bafang to have the high power 250w witch is a rebadge 500w but thats only 36v i believe.

good solution, get a knacked 250w motor, strip it out, buy a 48v bafang 350 and swap the guts over lol
big Bafang fan lol

stodd
Posts: 363
Joined: 6 Jun 2018, 10:24am

Re: 48v 250w motor

Postby stodd » 7 Jan 2020, 11:06am

billym444 wrote:so little of subject. so if you have a 250w that can put out 576w then is it still uk road legal.
Yes, it seems to be just the nominal power rating that matters. Pretty much all 250w motors can put out 400w to 500w; but not over extended period..

hemo
Posts: 905
Joined: 16 Nov 2017, 5:40pm
Location: West Sussex

Re: 48v 250w motor

Postby hemo » 7 Jan 2020, 4:19pm

As long as the motor is marked by the manufacturer as 250w it is legal, run continuously for an hour it shouldn't over heat (unsure of the temp used), a higher rated wattage motor under the same circumstances would run inefficiently and should heat up more.
All 250w motors are capable of more watts output but will suffer if continually run at higher wattage.

The Bafang 36v 250w BBS01 had a 25a controller and was sold as the ET model, it was capable of about 700w max power.

hemo
Posts: 905
Joined: 16 Nov 2017, 5:40pm
Location: West Sussex

Re: 48v 250w motor

Postby hemo » 7 Jan 2020, 4:22pm

billym444 wrote:so little of subject. so if you have a 250w that can put out 576w then is it still uk road legal.

im also a tad shocked that bafang have not brought out a 250w 48v yet.

now i cant remeber its name. and modle and if some one please remind me, but bafang to have the high power 250w witch is a rebadge 500w but thats only 36v i believe.

good solution, get a knacked 250w motor, strip it out, buy a 48v bafang 350 and swap the guts over lol


My calculation was wrong as I forgot to add in the effect of inefficiency, motor output would be about 450w max.

billym444
Posts: 64
Joined: 29 Sep 2019, 10:02pm

Re: 48v 250w motor

Postby billym444 » 7 Jan 2020, 6:29pm

ET model thats it, going to order one,
big Bafang fan lol

89mrmark89
Posts: 3
Joined: 6 Jan 2020, 3:52pm

Re: 48v 250w motor

Postby 89mrmark89 » 9 Jan 2020, 11:58am

Thank you all for advices. I bought tdsz2 250w 48v.

Nass
Posts: 1
Joined: 28 Jan 2020, 11:48pm

Re: 48v 250w motor

Postby Nass » 28 Jan 2020, 11:57pm

Where did you buy it from?
That is going to be my first ever Ebike conversation, after lots of research I think TSDZ2 is good option. Any thoughts??