I would like to type thank you.
I not fastest. I not most agile. With your help I figured my way to help decrease smog blanket and feel great. I did ride last winter but 4am hourly rides was cold yet admiration is here to you guys/girls nearer a pole.
Anyway, budget used so some modify/repair/replace is on hold until later; much later.
1 issue I have is an old ultegra 8speed wheel set. A perfectly serviceable unit. I have tyres to fit and would like to use such with a 23front 28 rear tyre combination on a bike that rolls a 105 9 speed 38 front rear tyre combination.
I understand from reading that the cassette will match the 8 speed rim.
Is this possible to use both wheelsets with the same cassette and retain derailuar alignment please?
I feel that that would be the easiest way as a cassette is heaps quicker to change than 2 tyres off, 2 tyres on.
If spacers are required, are they easily found and cost effective?