T�n�r� swingarm on a 660R
 

This is purely out of curiosity. Is it a straight swap to put a T�n�r� swingarm on the 660R? The T�n�r� swingarm is a nice piece of metal.

No one has done this mod yet that we know of. We have seen a 07> XTX to XTR swap over.

The Tenere looks longer than an XTR
 

Is it just an optical illusion or does it have more clearance.

Why I am interested is because I have a set of hubs and I have always considered having the rear built on a 18 inch rim (mainly because that allows more tyre choice).

I am just about to swap over for a 14 tooth front and was seriously wondering how the 18 would go for better torque transfer. When I raced go karts the front and rear tooth combination made huge differences on various tracks.

I have an 18" rear wheel on my Tenere (really? what else have you done to it Jenny?) and you'll certainly need to change the gearing significantly to get it back to a similar ratio. You'll also need a longer drive chain than stock.

For info, I'm running 14/50 now (with a 140/80x18 Michelin Desert) - you might get away with 15/50 - but running a 48T rear is not enough to lower the ratio back to what the stock 17" rim had...

Of course the increase in wheels size/gearing also compounds the speedo over-reading, it's like 15% out now...

However, the benefit in running an 18" rear does outweigh the disadvantages - tyre choice like you say, plus the steering is slightly sharper (unless you put different forks on too of course x)... I use a GPS nearly all the time anyway, so that is my accurate speedo these days...

J xx

A speedo healer will sort the speedo for you, I use one & have set it to my GPS reading.