Carbie screws on OS engines

[fourbie]

Has anyone tapped the screw holes on the OS Engines to take a larger bolt/screw? It is currently about M3 and I want to open it to M4. I'm thinking of going to button head allen bolts.

It will mean having to open up the body holes to 4mm - should be easy enough to drill out , and re-tap the carbie threads to M4; I'll be drilling to approx 3.3mm then tapping.

[burntclutch]

Why ???

[fourbie]

Originally Posted by burntclutch

Why ???

Thought you'd never ask!!

The existing screws got very loose. In fact I have now lost both and yes, I did threadlock them. I have some M3 but they are loose. I know I can use strong threadlock ................and I did time before last and boy were the screws hard to release, so hard I messed up the cross head on one. So I used Loctite last time and guess what!

I have a lot of M4 in all shapes and lengths so are plentiful and being allen headed will remove more easily when I use the strong threadlock.

[burntclutch]

O.k ,as in principle i see nothing wrong , but to be on the cautious side , have a close look why OS decided on M3 , I am sure it is a engineering decision and not some pinhead that decided that M3 fly better in the wind

[fourbie]

Originally Posted by burntclutch

I am sure it is a engineering decision

Indeed, I think you could be very right but it's more a matter of keeping the engine in service and the current size of screw isn't cutting it.

[YoungBull]

You seem to have good knowledge just do it.
Also you start alot-alot of threads and answer them yourself.?
No pun intended,not that type of person, just board.

[fourbie]

Originally Posted by YoungBull

you start alot-alot of threads and answer them yourself.?

What I am looking out for is if someone says don't do it and tells me why. I've never done this before and am thinking out loud rather than answering my own post.

[clough42]

Originally Posted by fourbie

What I am looking out for is if someone says don't do it and tells me why. I've never done this before and am thinking out loud rather than answering my own post.

I do that all the time. My family hates it.

[fourbie]

Originally Posted by clough42

I do that all the time. My family hates it.

Which, thinking out loud or waiting for a "No don't do it"?

[clough42]

Originally Posted by fourbie

Which, thinking out loud or waiting for a "No don't do it"?

Thinking out loud. I talk through the pros and cons of the options. Drives my son nuts. He just wants the answer given to him and he thinks I'm changing my mind over and over.