Hi Shadow pilot,
After a bit of Googling, I came up with this pdf bruchure:
Click here to viewThe brightbikes.com website no longer exists, but I did come across this UK addresses and phone numbers which might be worth a try:
Bright Bike Ltd. 19 Selbourne Road, Guildford, Surrey, GU4 7JP. 08703 450750
Dr. Russell Everitt was the main contact.
Electric Bikes Direct 10 Station Parade, South Street, Lancing, W. Sussex, BN15 8AA 0870 345 0775 anytime.
www.electricbikesdirect.co.uk website also no longer exists.
I also found this:
Electric Bikes Direct, Unit 3A, Merrow Business Centre, Merrow Lane, Guildford GU4 7WA
0870 345 0775
info@ebd.eu.com
and this, which would seem to indicate that they are all the same business judging by the address and phone numbers used:
19 Selbourne Road, Guildford, Surrey GU4 7JP
0870 345 0775
info@ebd.eu.com
From the above details, you might be able to track someone down who can hopefully assist you. But if that fails, you should easily be able to find a suitable 24V speed controller for a brushed motor that you could adapt for the FOLDe as it's pretty common electric scooter hardware.
Most modern throttle controls use hall sensors, because they are easier to incorporate into a twist throttle and they tend to be more reliable as there are no physical contacts to wear.
Do let us know how you get on.
Alan