23-12-2019, 08:31 PM
(This post was last modified: 23-12-2019, 08:32 PM by Ian Williams.)
Sounds to me like you may have big seven drums which have no dowels but fitted on A7 hubs, Big seven hubs have a register to radially locate the drum and the hole on the drum is larger than an A7 drum. If you miss match them, as I suspect you have, then the three screws will be locating the drum radially as you describe. Like others have commented I raced for many years and never experienced a failure with correctly matched parts and wheels retained by lock nuts with washers.
PS, the stud holes in big seven drums are a closer fit on the studs than and A7 drum as well.
PS, the stud holes in big seven drums are a closer fit on the studs than and A7 drum as well.
Black Art Enthusiast