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Hi all, as I started the thread I thought I may have some useful info for anyone using the whoosh conversion. We've just fitted a front wheel whoosh kit to our 10 year old Viking Tarantino after a lot of email correspondence with Andy at Whoosh, who was very helpful. We bottled out and got our local bike shop to fit the kit as he volunteered, and I'm glad I did. We didn't have enough clearance on the bottom brackets to fit the l/h pedelec sensor, so had to fit a new bracket with longer shaft supplied by whoosh. We intended to fit it to the front bracket to save disturbing the rear one with the 3 cogs on the r/h side, as our bike shop worried that if the cogs were moved outward then the gear change mechanism wouldn't have enough adjustment. The only problem after fitting the longer bottom bracket to the front pedals was that the pedelec sensor which pushes over the pedal shaft fouled the eccentric casing. The sensor supplied had the cable leaving the sensor at right angles to the disc, unlike the ones in their literature which have the cable exiting parallel to the disc. This is fine on a normal bike, but our tandem has an extra housing at the front which holds the eccentric casing which enables you to tension the front chain. The bike shop therefore tried fitting the extended bottom bracket to the rear pedals, which worked and we now have an electrified tandem, but as suspected there isn't enough adjustment to enable us to select the large 3rd cog for top gear. We have done 30 miles so far and we are very pleased with the power to get us up hills we would have walked up before, even with the lower torque front hub motor. However we are now waiting for an-in line pedelec sensor ordered on Amazon, to see if we can fit it to the front bracket and restore our top gear ring to operation. Whoosh no longer stock the in-line exit sensor although Andy did tell us where we could buy one. So I'm glad I left the installation to the bike shop as there has been a lot of faffing around and splitting of cranks, and more to come. Hope that all makes sense and is useful to someone. Picture of the right angle exit sensor on the rear bottom bracket attached. Mike.