thread size

[Chris]

Hi, does any one remember the thread size on the wad 6550 output tx? looks like 5 or 6 mm?

Best Regards
Chris

[bob orbell]

5mm. Bob

[Chris]

Thanks Bob, will order some longer ones. I want to fit thicker isolation under the transformers

Chris.

[pre65]

I normally only order stainless fixings these days.

There's a huge selection of M5 stainless on Ebay.

[Richard]

Chris, a tip is to buy threaded studding, very cheap from B @ Q etc, cut it to any length and finish it with dome acorn nuts on the top visible end.


Mine were M4 on Kit88 as I used plastic top hats to insulate the transformers.

[Chris]

Thanks for some cool ideas, I never thought of using a threaded bar cut to size.

Chris.

[Chris]

I see there are 6 holes and only 2 being used secure the TX's

Chris

[Greg.]

I think the term ‘top hat’ as in washer may be an outdated term. Certainly, when I wanted some, searching on top hat washers produced no results. However, search on shoulder washers was productive and will find what you need, as in:

https://www.ebay.co.uk/sch/i.html?_f...asher&_sacat=0

[pre65]

I'd associate "top hat washers" with insulating washers fitted in a hole, like the ones used on TO220 transistors. Also called shoulder washers.



PS Greg beat me to it.

[bob orbell]

Originally Posted by Chris

I see there are 6 holes and only 2 being used secure the TX's

Chris

You can and I did use all six on mine, of course, you will have to drill the holes in the chassis, but DO NOT try to drill the holes in the transformers, DO NOT even try to enlarge the holes, if the bolt or stud will not go through the transformer, use a smaller size bolt, 4mm, by drilling the transformer, you will electrically connect all or some of the laminations together Bob