Cycling UK Forum

Just stumbled across this thread. I had a radical prostatectomy at 54 I am 62 now, and last weekend I rode Chase the Sun a 205mile ride across Britain in one day.

Brucey wrote: ↑26 Apr 2024, 11:42am I think it shouldn't be too difficult to make QR axle end adaptors, using Al tube and wood, glued in place. Once the wheel is fitted, the adaptor doesn't have to do much. I also think the axle could easily be shortened and given a nice finish etc using the SG method. The axle could be held easily using a simple studding plus rubber expander type fixture.

I have a 148 to QR adaptor that I have turned down to 145 in my mini lathe. I really wanted to know if the disc and sprockets would all line up so I wouldn't have space out the disc mounting too much. But I can confirm it all looks good.
https://amzn.eu/d/iDfAZAp

Brucey wrote: ↑25 Apr 2024, 4:31pm because of the way through-axles work (ie with 3.5mm of each axle end disappearing into the dropouts), the actual dropout spacing of 'boost 148' is 141 mm. This means that everything important can be made to fit nicely in a tandem, and any proposed conversion will be more about the practicalities of altering the axle length/type in that particular hub, rather than anything else.

Thanks
I have ground down either end of the axle by 1.5mm, a quick trial fit and the disc lines up very well. I could find lots of information on line about the spacing of thru axle, boost and boost plus hubs, but nothing on 145 or 160mm tandem hubs. Like I said I have cut down 142mm thruaxle hubs to 135mm qr, which I have put hundreds if not more miles on, fitted to my winter bike.

I have narrowed down 142mm thruaxle hubs to fit 135mm qr frame and I wondered if any one has narrowed down a 148mm boost hub to fit a 145mm tandem frame?

When I used a Shimano hollowtech BB in my F frame Moulton. I would grind off the shoulder on the fixed side of the BB and then you could adjust the chain line infinitely.