OK, I have an '07 Night Train with the standard 21/2.15 front wheel. I wanted to upgrade to a 21/3.50 and go with the 120 series tire. I paid a couple hundred bucks for an 80 spoke DNA wheel, it had 3/4" tapered bearings and I was under the assumption that I could simply change out the bearings to 25mm. It seems that this is not doable because of the taper.

So, can I change the hub on the new wheel? Can I pull the hub out of my current wheel and use it with the new one? Can I change the axle to 3/4"? Or, any other suggestions?

Please help!

 

Do you happen to have any pics of what you are working with? I've done some swapping around with bearings and spacers recently but I'm not sure I fully understand what you are working with.