I have quite a lot of trouble finding tubes for my 29er. I have a set of the on-one wheels that states that they are not suitable for tubeless so I think that is out (the tyres are really lose on the rims). I actually want some latex tubes or something light (the wheels are heavy enough)
Does anyone make light weight 29er tubes and if so where can I get my hands on some?
Thanks

Not easy… What tyres are you using? The most readily available decently light tubes I can get hold of are Schwalbe 700×45. Fine in anything up to around 2.0, large volume tyres are a bit much though. Bonty supposedly do an xtra light butyl 29er tube but Trek UK are always out of stock. Maxxis certainly should do their flyweight tubes in a 29" size (as they have light xc non-tubeless tyres) but don't. I have tried stretched lightweight 26" tubes but these are also rather puncture prone. My best advice would be to get some tubeless compatible rims.

Try Unicycle.co.uk – they do a few varieties of 29" tube, from the Continentals (heavy, but I love 'em) to the Schwalbe SLs.

700 x 32/37 fit fine.

http://www.evanscycles.com/products/bontrager/tube-29-x-175-235-ec001853?query=29er%20tube

Charlie the Bike Monger usually has lightweight Schwalbe 29er tubes. Works for me.

Currently those nice chaps at Chevin cycles. 5 Bonty presta tubes delivered to your door for a tenner:

http://www.chevincycles.com/products.php?plid=m29b49s380p5767

And buy lightweight tubes if you're fond of getting off your bike lots and taking the wheels out….. 29er wheels are a bit heavier, don't worry!