Need help with Tube size.
I have what I believe is a Spin Mtb Trispoke. I found the right tire size which was 26 x 1 1/8. Problem is I cant find the right tube. I've tried two tubes one from Continental which was a Tour 26 (650C) ALL. and one from SHWABLE Sv 13. Both were too big. I looked online but I'm only confusing myself. Any help is appreciated.