Solder or Glue and Pin

[Smifffy]

Hi,

I'm after some of your collective advice again. As per previous post, I'm currently making the crank axle for my Royal Scot. Martin's design calls for the webs to be locktited and pinned to the axle, so the question is:

Is it better or easier to Silver Solder or to glue and pin ?

As always, your help will be much appreciated.

Regards

Mark

[02jcole]

Hello Mark,

I would suggest that you pin and loctite it, as it is just as strong as soldering but without the hassle of having to clean up the work afterwards. Also could distortion occur from the heating?

Regards James.

[Shawki Shlemon]

Having done a few I agree with James , the first time I did one for the lorry , I used silver solder and what a hassle ,not again .

[Smifffy]

Cool, loctite and pins it will be :-)

Any advice on how big a gap I should leave for the loctite ? I was thinking about 0.05mm (2 thou).

Regards

Mark

[lancelot]

Hi Mark, Sliding fit, I would tkink...John.

[havoc]

Something like Loctite 638 requires 0.05mm to 0.15mm to achieve maximum strenght.

[Smifffy]

...cool, thanks Havoc et al, I managed to locate various Loctite data sheets on the web giving the same sort of info. 0.05 mm it is then :-)

[paul]

Mark, why not do what others have suggested on here and make a couple of grooves round the axle for the loctite to sit in?

[simonwass]

paul said:

Mark, why not do what others have suggested on here and make a couple of grooves round the axle for the loctite to sit in?

If you dont, it can end up with a wobble.
Cotton reel shape is what is needed, end 10% a smooth sliding fit, middle 80% 3 thou smaller for loctite to do its thing. Clean parts with cellulose thinner.
A properly made loctited joint shouldnt need pinning, but we all do!