Front Wheel speedo cable connection hub moving when wheel is in motion

[Dlans]

1966 CB77 Front Wheel speedo cable connection hub moving when wheel is in motion

I'm unsure of the proper part name, however the wheel speed connection hub for the Speedo cable is moving with the wheel. The hub would spin 360* if the right front fork didn't stop it. Is there a retaining bolt or pin that possibly has sheared off? Is the front wheel assembly possibly loose? please let me know what you think.

 

[ancientdad]

Moved to 305 Wheels, Tires and Brakes

First thing you should do is put your bike in your signature in case you forget to mention what it is. Though I could search parts fiches for that lower fork leg to identify it, I do not recognize it so I can't be sure of what bike it is. That said, that style of speedo drive only rotates with the wheel when the axle is not properly tight before tightening the lower fork caps that secure the axle.

I just looked at your profile and now realize it is a CB77.

 

[LongDistanceRider]

Not familiar with this model at all but typically there's some sort of stop incorporated with the slider and the speedo drive. I know on CM400's the drive has a notch and there's a cast tab that fits the notch on the slider.

 

[66Sprint]

IF the axle is properly torqued, then all the wheel spacers and bearing centers form a compressed "tube" or "sleeve" around the axle bolt that can ONLY rotate if the axle rotates......

Since the fork-bottom caps "pinch" and DO prevent axle rotation, the speedo-drive (which is also one of those wheel spacers) CAN'T spin independent of a properly torqued axle........55 to 61 ft/lbs......So it's quite tight.....

Also IIRC, on the Superhawk, the axle inserts from the LEFT side, Not the right as yours is shown......

 

[crazypj]

That's pretty much exactly what I was going to say,
I have a CB77 wheel here I'm intending to re-build with a 18" WM3 flanged alloy rim, brake drum has narrower fins than later models so looks better in my opinion (plus has much nicer cast/forged (?) brake arms instead of pressed ones)