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Wow. Thanks vfr400 you certainly know your stuff. Lots to think about and Google. All this has been rattling around in the subconscious whilst I've been painting the utility room today. In essence I could use my beloved Whyte with the correct hub motor spinning it's 27.5+ rear wheel and save a...

Cheers v Thanks very much for the reply. I've spent a wee bit of time having a look around on the net, and discovered that whoosh has a bike shop! Should have realised by his/her membership. Lots of interesting things to look at and loads of info too. I think it would be almost sacrilegious...

OK folks thanks for the input. I'll see if I can find another bike. As mentioned this was my first attempt at finding a bike to convert and its obviously not a good fit. To sum up;- Older bike. Cable runs from the top, down seat stays avoiding bb area. 2/3 front ring operating a x7/8/9...

As I understand you keep your gears on both however a hub doesn't have the advantage of the gearing provided by the rear cassette whereas a mid drive does. I

Hi Peter Thanks for your reply. I'll attach the images that I have on my phone. The bottom bracket has quite a "bulge" to allow the cables to exit the shell. I'd thought that the motor axle might have passed through and still allowed the cables to exit. God knows how I'd re-route the cables...

Thanks Woosh Very useful diagram. I've just been and measured my bike (whyte-909 v3) and yes the centres are indeed 50mm. I'll add a photo of my bb which I've annotated just to confirm. I bought this with the fullest intention of converting however enjoy riding it compared to my full suss, that...

Thanks vfr400 The reason for the mid drive was to maintain the use of the gears. The bike would only really be used for it's hill climbing ability and hopefully 30miles + range in the local cheviot hills. Broadly speaking what I've learned from the "net" is that hubs are better on road if you...

Thanks for the reply. Apologies, as this wasn't intented as a complaint, just an honest question. I realise that bafang motors come in different widths to accommodate different bb's my question I suppose is do you get a 73mm to fit a 73mm bb or a longer one to accommodate the extra width of...

Hi everyone I'm still on the hunt for the perfect donor bike. Ideally want a hardtail with plus tyres and a decent fork. No problems finding 73mm bb's however most "good quality" bikes have external bb's. This means that the distance between the non drive crank and the chain ring is much...

Hi everyone New on the block but hardly a kid. I've been looking around for ages now regarding a crank drive motor conversion. Would love to convert my Whyte 905 hardtail but really struggling to get my head round whether a crank drive will fit. Hopefully some of you good people will be able to...