Upgrade to BBSHD?

[peter.c]

That's a major design change no more burn outs they seem to want to make it bomb proof with very few returns

​

or is it to power a new secret milk float type 4 wheel vehicle micro car

 

[Woosh]

or is it to power a new secret milk float type 4 wheel vehicle micro car

there is enough torque for those pedicabs in Oxford Street.

 

[peter.c]

How about you stock a motor bracket adaptor offer a service to cut frame and fix new mounts but we would need to find a good welder

 

[Woosh]

The kit comes with the mounting bracket to be welded to any frame but I will have to choose snow bikes or MTBs.

 

[peter.c]

I wanted to build a fat bike with mid -drive but would want to try one first the uk seems stuck on rear hubs in these
mtb will sell as an option to the Bosch

 

[Blunderbuss]

The kit comes with the mounting bracket to be welded to any frame but I will have to choose snow bikes or MTBs.

As the "street legal" offering would it be the G520 as that looks very decent?

https://www.bafang-e.com/en/components/component/motor/mm-g520250.html

 

[wheeliepete]

I wanted to build a fat bike with mid -drive but would want to try one first the uk seems stuck on rear hubs in these

 

[peter.c]

If the mtb followed the look of the voodoo zobop with this g520 and lower price absolute winner with more motor options and no halfords might even pack the tools away

 

[peter.c]

Nice bike Wheeliepete

 

[minexplorer]

Hi guys,

I recently converted a specialised crosstrail disc 700c hybrid bike using a BBS01 kit 350 W. It has plenty of speed on the flats and I can usually get up to about 26 or 27 mph on a good day. I do find it a bit gutless on bigger hills though. I have modified the controller settings using software and the programming cable so it is operating at 100% keep current and 20 V which is the maximum permitted for this particular motor. Given this, I was wondering whether to upgrade to the BBSHD model as this would give me a good boost up the hills and it would be nice for 30 mph on the flat, I’m not really that bothered about exceeding this. It would also be good if this model can be detuned if necessary to provide similar power to the BBS01 if I need additional range. With my current motor, I have two batteries but with the maximum settings I’m lucky to get 35 miles out of the two. The batteries were sourced from eclipse, 13.5ah 36v. How would the BBSHD compare roughly in terms of battery usage?

Also, is the fitting kit identical to the BBS01? I was thinking I could just swap over the motors and the battery housing and leave all the cabling.

Any thoughts?

Thanks in advance, Paul.

Strange ,same here bbs01 350w. I also fitted a second battery recently,total 30ah. Get 40 miles with settings at 20amp & 100 % keep current. I love the kit,but still wanted more.Have just put a bbshd on a marin bobtail trail mtb. Ive got a samsung 30q 15ah 52v battery. To answer your questions. It will climb hills like uve only dreamed. Ive programmed mine so on pas 2 its giving 13amps.Which with 52v & 60% k current is equivelent to the bbs01 on max. Ive found with using mostly 23-30amp power levels.No restricting speed and lots of hills a range of 20miles.Im using mtb tyres,42t chainring an mostly 15t-17t. Ive had 25miles using pas 3 ,17-18amps with plenty of 30amp on hilly stretches.

 

[minexplorer]

You are right Kirstin. It won’t be cheap at all but hopefully it’ll keep me happy for a few years!

Do it...I went bbs01 350w ,36v first time because price. 10 months later Experience shows i just should have bought a bbshd and a big AH 52v from the start. On a good mtb Its a dream set up for anything. Lets be honest ,would anyone ever choose a 250w motor if 1000w motors became legal.

 

[paulc1976]

Do it...I went bbs01 350w ,36v first time because price. 10 months later Experience shows i just should have bought a bbshd and a big AH 52v from the start. On a good mtb Its a dream set up for anything. Lets be honest ,would anyone ever choose a 250w motor if 1000w motors became legal.

Thanks for the info minexplorer. I’ve had a good think about it and I think it would be the right thing to buy the BBSHD. One of the big things is that I can use it as a BBS01 want if required as sometimes I go out cycling with my girlfriend and she has a BBS01 kit fitted to her bike so at least she should be able to keep up with me!

I was wondering how much difference there would be between the 48v and 52 v batteries in terms of performance/range? I was tempted to get the 48 V 17ah battery from insat with Panasonic cells but they also do a 52 V version although it is around £100 more. Also, what sort of range would you get at the setting equal to the BBS01 on full power with that capacity of battery ?

 

[minexplorer]

Thanks for the info minexplorer. I’ve had a good think about it and I think it would be the right thing to buy the BBSHD. One of the big things is that I can use it as a BBS01 want if required as sometimes I go out cycling with my girlfriend and she has a BBS01 kit fitted to her bike so at least she should be able to keep up with me!

I was wondering how much difference there would be between the 48v and 52 v batteries in terms of performance/range? I was tempted to get the 48 V 17ah battery from insat with Panasonic cells but they also do a 52 V version although it is around £100 more. Also, what sort of range would you get at the setting equal to the BBS01 on full power with that capacity of battery ?

I will ride my 52v 15ah flat using the 13amps setting only.Equivelent to the bbs01 350w maxed out and post the range .Add 15 % then for a 52v 17.5ah. You can get one of those from electron cycles .It has the higher capacity GA cells.Costs £475 but with the bbshd kit its total £1025. They chuck gear and hydraulic brake sensors in as well and the dcp 14 display.Must say the 30q battery i bought from them is very solidly made. I think ud be best getting 52 over 48.Maximum power and voltage towards the end is higher of course than the 48v is providing.Less sag.

 

[anotherkiwi]

Do it...I went bbs01 350w ,36v first time because price. 10 months later Experience shows i just should have bought a bbshd and a big AH 52v from the start. On a good mtb Its a dream set up for anything. Lets be honest ,would anyone ever choose a 250w motor if 1000w motors became legal.

Short answer: yes.

A 250 W nominative motor with a 12S battery and a 20 A controller is a 1000 W motor when the battery is hot off the charger.

It is lighter. There are 250 W nominative hub motors with 72v batteries and 35 Amp controllers in the wild. In theory with a 48v battery they are road legal - that is 1.68 kW so at least 1.2 kW at the wheel.

And did I say they were smaller and lighter?

 

[paulc1976]

Thanks for all the replies guys. I have one final question before I make my purchase.

I’m considering two different batteries, the first one is from electron cycles:

14S5P 52v17.5Ah (Samsung 35Q cells

The second one is from Insat

52v 17.5Ah Panasonic NCR18650GA Tiger Shark

Both are 17.5ah, which one is the best to buy?

 

[peter.c]

For peace of mind insat made in the uk but electron is good as well but made in china

 

[Nealh]

Thanks for all the replies guys. I have one final question before I make my purchase.

I’m considering two different batteries, the first one is from electron cycles:

14S5P 52v17.5Ah (Samsung 35Q cells

The second one is from Insat

52v 17.5Ah Panasonic NCR18650GA Tiger Shark

Both are 17.5ah, which one is the best to buy?

Not so !!!
30Q is a 3000mah cell so 5P can only be 15ah (5 x 3000 = 15000mah/15ah).

GA although sold as 3500mah cell, it's real world mah is about 3300 so 16.5ah.
Cell resistance is said to be higher then most so may affect long term life with voltage sag becoming more evident as it age's.

Both cells are among the five best 18650's available.
30Q is 15/20a rated and GA is 10a rated but has shown it can handle 12a.

 

[paulc1976]

Not so !!!
30Q is a 3000mah cell so 5P can only be 15ah (5 x 3000 = 15000mah/15ah).

GA although sold as 3500mah cell, it's real world mah is about 3300 so 16.5ah.
Cell resistance is said to be higher then most so may affect long term life with voltage sag becoming more evident as it age's.

Both cells are among the five best 18650's available.
30Q is 15/20a rated and GA is 10a rated but has shown it can handle 12a.

Ok thanks guys. It says 35Q on the Samsung listing, is that the same thing?
So I guess the performance and range of both would be comparable?
On that basis, just go for whatever is cheaper?

 

[Nealh]

It is either a typo or they are being typically Chinese and misselling.

There is no 35Q but there is a 35E cell which I expect they are selling.

The 35E is an ok cell but GA is better.

Post note.
Just looked it is sold correctly as 35E, looks like you have got your Q's & E's confused.

 

[Nealh]

For BBSHD 35E is a poor choice you will need 30Q or GA cells in 5P configuration. If feeling flush VTC6.