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shapeshifter
14-02-2018, 07:42 PM
I'm looking for a blanking plug to replace the 7 pin fischer socket on an AV1f.

Am I right that this is an M141mm thread, and does anybody have any idea where I might find a blanking plug to fit ?

LearnerDiver
15-02-2018, 10:32 AM
I'll have a look in my box of bits - I'm sure I have some M14 x 1.5 plastic ones but not sure about M14 x 1

shapeshifter
15-02-2018, 11:03 AM
That's very kind of you. I'm talking to tecme.de who're going to make one for me.

I got the type of plug from the AV1 manual and then got the threading from (what I'm hoping is) the same plug from narked@90. There are so many possible sources of error that I'm really just looking for confirmation of the threads.

LearnerDiver
15-02-2018, 11:12 AM
If you get stuck let me know as I can make you one in Delrin or Stainless if I cant find one.

LearnerDiver
17-02-2018, 08:58 PM
Finally managed to find my box of plugs - I've been tidying and forgot where I'd put them - but there was nothing that small.

Ian_6301
17-02-2018, 11:35 PM
M14x1 5 is standard for spark plugs, if that's any help?

Doomanic
18-02-2018, 07:27 AM
These are M14x1.
http://www.chainreactioncycles.com/mobile/nukeproof-neutron-pedal-alloy-end-caps/rp-prod82082

shapeshifter
18-02-2018, 06:09 PM
I measured the threads and they looked to be closer to 1.5mm. If that fits and makes the housing waterproof so much the better.

Now I just need to work out what the 12 connection points all do and I'll be all set.

LearnerDiver
18-02-2018, 07:55 PM
I measured the threads and they looked to be closer to 1.5mm. If that fits and makes the housing waterproof so much the better.

Now I just need to work out what the 12 connection points all do and I'll be all set.

That would make sense - M14 x 1 is very fine and M14 x 1.5 is fine and more common.

Are you just wanting to plug the hole?

Just done some searching and Fischer quote M14 x 1mm for a lot of the panel mounts - see http://www.farnell.com/datasheets/1271240.pdf page 34 onwards

Paulo
18-02-2018, 08:16 PM
Have you asked Alexey at UWT?

shapeshifter
18-02-2018, 09:57 PM
I'm just looking to plug the hole - neither I nor my computer do constant ppO2.

I'll see how it goes with the 1.5mm and let you know.


That would make sense - M14 x 1 is very fine and M14 x 1.5 is fine and more common.

Are you just wanting to plug the hole?

Just done some searching and Fischer quote M14 x 1mm for a lot of the panel mounts - see http://www.farnell.com/datasheets/1271240.pdf page 34 onwards

shapeshifter
21-02-2018, 06:25 PM
So. I got my beautifully made M141.5mm delrin blanking plug and now I know that the way you measure blanking plug sizes isn't the way I thought.

I've got an M141.5mm blanking plug for sale if anybody's interested.

LearnerDiver
21-02-2018, 06:40 PM
So. I got my beautifully made M141.5mm delrin blanking plug and now I know that the way you measure blanking plug sizes isn't the way I thought.

I've got an M141.5mm blanking plug for sale if anybody's interested.

Have to ask - how did you measure it?

Doomanic
21-02-2018, 07:12 PM
So. I got my beautifully made M141.5mm delrin blanking plug and now I know that the way you measure blanking plug sizes isn't the way I thought.

I've got an M141.5mm blanking plug for sale if anybody's interested.

I've done some googling and I'm pretty sure that the connector is M14 x 1.
The bicycle parts I linked to are probably the cheapest way of making certain.

https://www.fischerconnectors.com/sites/default/files/specifications/fischer_core_series_brass_techspecs_1.6_june17_0.p df page B1-10

shapeshifter
21-02-2018, 07:14 PM
I eyeballed the thread pitch and got that right and I used a vernier calliper on the inside of the hole and read 14ish mm. Apparently I should have taken into account the depth of the threads.

Live and learn, hey?


Have to ask - how did you measure it?

shapeshifter
21-02-2018, 07:17 PM
I later learned that the particular housing I have had a cable gland in place of a fischer connector.


I've done some googling and I'm pretty sure that the connector is M14 x 1.
The bicycle parts I linked to are probably the cheapest way of making certain.

https://www.fischerconnectors.com/sites/default/files/specifications/fischer_core_series_brass_techspecs_1.6_june17_0.p df page B1-10

LearnerDiver
21-02-2018, 07:43 PM
I eyeballed the thread pitch and got that right and I used a vernier calliper on the inside of the hole and read 14ish mm. Apparently I should have taken into account the depth of the threads.

Live and learn, hey?

So probably M16 x 1 or M16 x 1.5?

M16 x 1.5 is a standard cable gland size - a standard off the shelf blanking plug is as on the left below, right hand one is an M12 stainless one

http://ffsystems.co.uk/images/blanking%20plugs.jpg

shapeshifter
21-02-2018, 08:34 PM
The 1.5mm threads seem to fit and the officially 14mm plug I have slides easily into the hole so 161.5mm seems likely, yeah.


So probably M16 x 1 or M16 x 1.5?

M16 x 1.5 is a standard cable gland size - a standard off the shelf blanking plug is as on the left below, right hand one is an M12 stainless one

http://ffsystems.co.uk/images/blanking%20plugs.jpg