More wheels - but this time an interesting set of Ewart Discs

[Nick Lettington]

You are clearly right about these!

I would suggest though that a single bolt from the inside of the sports wheel could secure a 3 legged spider for the rear disk and the front disk without the need for a captive nut.

[Ian Williams]

I am inclined to agree with Mike on the basis of the evidence presented here, however I do agree that the competition department may have made some changes in an attempt to ensure the discs ran perfectly true and did not upset wheel balance.

[Derek Sheldon]

I have a Rosengart  which had a one bolt disc attachment drilled through closed centre hubs. I only have or had two of these wheels, since filled in. I don’t have  disc as my model was not supposed too, unlike popular belief that all Rosengarts should have