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Electric tandem

Posted: 19 Apr 2020, 4:02pm
by joelkan
Good afternoon

I have borrowed a tandem for a couple of months so that my 16 year old son who has special needs can get out and about on a bike.
He is doing well with it but I’m doing all the work and very difficult going up hills.
I have been on an electric bike with pedal assist before and enjoyed it.
The tandem I have on loan is a 21/18” frame as my son isn’t very tall.
Does anyone know if I could get a similar tandem with pedal assist?
I have had a search and looking at around £4000.
Anybody any ideas?

Re: Electric tandem

Posted: 19 Apr 2020, 5:08pm
by Bonefishblues

Re: Electric tandem

Posted: 19 Apr 2020, 7:25pm
by stodd
You can do a conversion. We added a Woosh XF07 front hub kit (under £500) to a basic but enjoyable Viking tandem we had had for a few years (under £500 new). It doesn't allow us to roar round the countryside and wizz up hills, but it makes all the difference for fairly gentle riding and in particular help (not all the work) getting up hills.

See https://wooshbikes.co.uk/, good pre and post sales customer service.

If available I would add a motor with a little more torque; there wasn't anything legal around in appropriate wheel size when we converted.

If you do go for new, the Circe might do just what you need: £4000 from the tandems.co.uk site referenced above:
https://www.tandems.co.uk/m3b0s110p0/Ta ... -e-tandems
Any repairs after warranty or battery replacement are like to be pretty high on a bike like that.

Re: Electric tandem

Posted: 10 Jun 2020, 3:45pm
by joelkan
I got outbid on an electric tandem on eBay so have been researching buying a tandem and converting.
Would the mid motor kits be better than the hun kits due to the extra weight of a tandem and was looking at getting a 36v 15ah battery.
Has anyone got any advice please.

Thanks

Re: Electric tandem

Posted: 10 Jun 2020, 6:57pm
by stodd
You may have difficulty with a hub kit and tandem crossover drives.

Had to enter that in a bit of a hurry. You will get more advice on what sort of kit will fit and be suitable for what sort of bike from
https://www.pedelecs.co.uk/forum/forums ... ussion.42/

One specific point on front drives. On regular bikes these can have poor grip at the front for gravelly hills. This applies much less on tandems because of the different weight distribution. Plus with a front hub motor you have two driven wheels which can really help with slipping: we have found that especially on slight uphill slippery grass tracks.

Re: Electric tandem

Posted: 10 Jun 2020, 7:39pm
by reohn2
I have a childback good quality KHS tandem in VGC(photos available) for sale cheap @ £350ono .
A front wheel e-kit would cost between £400 to £700 depending on battery size,which would be an easy DIY fit.
PM me if you're interested in the bike.

Re: Electric tandem

Posted: 17 Jun 2020, 6:15pm
by Lodge
There's a Hase Pino on eBay at the moment with child crank accessory included. That could be electrified with a front wheel motor relatively easily. We used to have a front wheel electrified Pino - they pull quite well due to the small wheel size. Four days left as of 17th June.

Being semi-recumbent it's very good to be able to keep an eye on a less able stoker up front.

https://www.ebay.co.uk/itm/143629128119?fbclid=IwAR27hOFmJ3wn5fLKJpFW6WUYkPh4m72DMJltudSkrnj12tSlaMiA1RgH_WY