Studs or set screws????

[olympus]

Hi Gents
The fork legs I procured came with 1/4 UNC set screws installed for the mudguard supports..
All our favourite parts supply companies list 1/4 UNC studs.... what is the frefered method of fixing????

Thanks

 

[Onder]

I go with studs. Any time you go into ally you would rather have the working threads to be replaceable. Anyway that is my excuse.

 

[maylar]

Bolts make removing the fender or brake caliper bracket far easier.

 

[kommando]

But steel bolts wear out threads in Aluminium. More important on a daily rider than today's expected mileage.

 

[maylar]

But steel bolts wear out threads in Aluminium. More important on a daily rider than today's expected mileage.

For as often (seldom) that they come off, and with lock washers and proper torque, I've seen no wear.

 

[cliffa]

Unfortunately a previous owner had used bolts which were a tad too long and one had broken into the the bore of the slider, so I had an oil leak from the mudguard ! (that must be a first) so when I rebuilt my forks reverted to studs locktighted in. No leaks since.

Into soft alloy, studs or very course threaded bolts are a no brainer, but obviously the correct length is imperative for the latter.


Cheers,

cliffa.

 

[ILLF8ED]

Set screw

machine bolt

 

[robs ss]

Set screw
View attachment 14815
machine bolt
View attachment 14816

Well that's different! Here in Australia what you call a set screw, we call a grub screw.
To us, a set screw is simply a machine bolt with the thread running all the way to the head (no unthreaded shank) - just what you have shown as a machine bolt.
I guess it highlights how confusion can reign supreme!

 

[jbruney]

Unthreaded shank is cap screw to add to the confusion of the common language. The English really put it to us all separating us by great distances with the same language didn't they?

 

[Scout63]

I lost one of my front fender bolts and had to scrounge. The rocker spindle cover bolts fit perfectly if I remember correctly.

 

[olympus]

Set screw
View attachment 14815
machine bolt
View attachment 14816

The top one is a grub screw and the lower one is a set screw.... which is threaded its full length.
Unlike a bolt which is only partially threaded

 

[maylar]

Into soft alloy, studs or very course threaded bolts are a no brainer, but obviously the correct length is imperative for the latter.

The stud is a 1/4-20 NC with full thread. Removing the mudguard requires bending the "bridge" to clear them, which always results in scratching it. Bolts (set screws?) prevent that.

 

[cliffa]

The stud is a 1/4-20 NC with full thread. Removing the mudguard requires bending the "bridge" to clear them, which always results in scratching it. Bolts (set screws?) prevent that.

Yep, I realize that, but in my case I had little choice, as oil was getting too close to the disc for my liking. I suppose the ideal solution is Helicoil thread inserts in the sliders and bolts (of the correct length).