Quote {re you describing a pin? In other words, a hole through the collar on the hub leading into the axle so the bolt goes through the hub collar and into the axle? If so, you could continue through the axle and also the hub collar on the other side of the axle. Then you can just use a bolt and nut rather than having to tap anything - but it all depends on how much room you have to work with on the hub collar.} end quote
Nah, thats 90 deg to the shaft, I know what you mean though.
I don't like that idea because it weakens the shaft a bit too much.
ie, if its gonna break, thats where its gonna break...
I mean to drill the hole 'Inline with the shaft'.
In the same position as the proper keyway would be.
1/2 the hole (lengthwise) in the shaft, 1/2 in the wheels rims collar/boss.
Then tap it out & screw in a long grubscrew (it won't protude out the end of the axle.) covered with Loctite (or nail polish!)
Theres an advantage if you use a small dia screw, if it dosn't work you can still put in a keyway where the tapped out hole is.
Though its **** hard to keep a drilled hole in line with the axle when you drill it out.
Worst gets to the worst, you can file/hacksaw/chisel the hole out so it will fit a proper keyway key later on.
Bit of a warning.
If the scotch key gets loose it will slog out pretty quickly.
Putting a keyway into a shaft is a quick job if the machine shop is set up to do it.
Putting a keyway in a boss takes a bit of setting up, it can go wrong very quickly, & its hard to fix up too.
I used to work in a machine shop & could put a keyway in a shaft in less than 15 mins, start to finish, bolting on the vise, setting up the cutter etc.
It peeved the Manager off a bit, how could he charge for 1/2 a hour when I did it in less than 15 mins?
I think they smeared the time over to the keywaying the pully out or such.
I just found out, if I google 'Scotch keyway'. This thread is the first to come up!
I know I never invented it though.
