350W BMS Battery legality problem

[Jeremy]

This one is cheaper and also current

BS 1727:1987 - Specification for motors for battery operated vehicles

Unfortunately you have to use the older 1971 British Standard (only available as a printed copy, I believe), not the newer one, as the Statutory Instrument is specific and stipulates the BS1727:1971 method in Section 2:

" “the 1971 British Standard” means the specification for motors for battery operated vehicles
published by the British Standards Institution under the reference 1727: 1971 as amended by
Amendment Slip No. 1 published on 31st January 1973, Amendment Slip No. 2 published on
31st July 1974 and Amendment Slip No. 3 published on 31st March 1978 ".

 

[shemozzle999]

It shows that one as be withdrawn.

I also shows the up the dis-jointed way we have let or standards slip over the past years with the excuse being that we living in a fast moving global market and must remain competive.

I think it might come back to bite us.

 

[Jeremy]

It shows that one as be withdrawn.

Yes, but the law hasn't been amended to allow the newer standard to be used, so to be legal in this case you have to use the older printed copy of the BS when demonstrating compliance. This is often the case, as statutes sit around for tens of years without review. It's one reason why Type Approval test houses have to maintain a library of old standards, just because a lot of equipment is only legal if tested against them! Bizarre, I know, but the law often behaves in strange ways, it seems.

 

[morphix]

I'm going to power up this 350W motor tomorrow from 36V10Ah so let's see what that baby sounds like. I will film it of course I won't be riding it though its not in a wheel yet. I want to also test out the cruise control feature on this KU63 controller to see if it behaves like Jerry described his controller does.