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E assist for Twin Raven

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Mike Ayling:
The Rear Admiral wants e assist.
Obviously we want to retain the Rohloff so we either go mid drive or front wheel..
I assume that with a mid drive we loose the front ebb so we rely on the rear ebb to tension the timing chain resulting in a problem tensioning the drive chain.
The Rohloff chain tensioner replaces  the derailleur hanger which we don't have a hole for installing one  so what other options are there?
Front drive also has complications with cable removal when using the S&S couplers to didvde the bike for transport.

Any advice please?

Thanks

Mike

Danneaux:
Mike,

A quick online search brought up a Pinterest link showing a "Thorn Raven Split tandem electric bike conversion" by Electric Bike Conversions in the UK: https://electric-bike-conversions.co.uk/

Attached below is a photo from their Pinterest gallery ( https://www.pinterest.co.uk/electricbikeconversions/_created/ ). It is not the clearest but does show a powered front hub, which would appear to solve many of your potential issues because it leave the eccentrics unencumbered.

I'll keep an eye out for more examples but it might pay to drop a note to the folks who did the conversion to see if they ran into any particular issues.

Best,

Dan.

Danneaux:
Mike,

These folks also claim a Raven Twin conversion:
https://www.electricbicycleworld.com/electric-conversion-by-brand/

Another here, with photos:
https://www.pedelecs.co.uk/forum/media/ezee-powered-thorn-raven-tandem.401/

Hope this helps.

Best,

Dan.

rualexander:
https://www.sjscycles.co.uk/ebike/pendix-motor-kit-500w-long-reach-magnet/

Mike Ayling:
Thanks everyone for the replies.

I am in Melbourne Australia and I will show the pics to my local conversion people.

Mike

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