Wasp Type S10 speedo connections

[JustinT]

Hi, not sure if this is the correct place to post this.
I have a Wasp Type S10 speedo on my 1976 yacht, it's disconnected but the wire is sitting there, going to a paddle in the keel.
However the connector would never be the right thing to plug into the back, confused. It's like an audio plug on the cable.
Does anyone know how it should be connected up? As I have the speedo and paddle I might as well get it working. It isn't a trailing log btw, it appears to be original equipment in the yacht (well an truly fixed in place)
Thanks
Justin

 

[VicS]

I thought a Wasp S10 was mechanical trailing log

Post a photo of the back . Perhaps someone will be able to identify the type of connector you need.

 

[KompetentKrew]

I thought a Wasp S10 was mechanical trailing log

You appear to be correct.

Some previous threads may be helpful: Wasp Type S10 site:forums.ybw.com

 

[JustinT]

Thank you. It's pretty hard to see the back and I can't work out how to remove it from the yacht.

 

[JustinT]

It isn't a trailing log though. Clearly at one point it all worked and is pretty well fitted in place on the yacht. The paddle wheel is in the keel the wire comes up to behind the dial. Probably it may have had electrical connections at some point. I'll stick my phone behind it and take a picture!

 

[Tranona]

pretty sure nit electrical. but more like a mechanical speedometer with an inner and outer cable and probably a bayonet fitting to the head.

 

[VicS]

Thank you. It's pretty hard to see the back and I can't work out how to remove it from the yacht.

If its built in with no easy access to the back then its not a mechanical trailing type.

I agree with Tranona though . It looks more like a mechanical type. Cable driven like old fashioned car speedos

Maybe the instrument head and the installed impeller have nothing to do with each other

You said "paddle" Do you really mean a paddle wheel. If so I dont think it will be mechanical

 

[JustinT]

Good points, I shall have a close inspect of the back, with a mirror and have a close look at the paddle in the hull. Cheers for the ideas.

 

[forelle541]

I had one on my old Folkboat. The spinner was fixed to the hull and the cable, like an old mini speedo cable went from the spinner to the head. If I remember correctly the end of the inner spring cable was formed into a hexagon that was held in by a collar.

 

[JustinT]

It's possible that someone was trying to be clever and made a confusing mess on my yacht. 50 years of "man shed" works!

 

[VicS]

It's possible that someone was trying to be clever and made a confusing mess on my yacht. 50 years of "man shed" works!

You said the cable had a plug that looked like an audio plug.
I'm not sure what you mean by an audio plug but it has crossed my mind that the end fitting of a mechanical cable drive looks similar at fist glance to a PL259 aerial plug but with the squared off end of the inner cable where the centre connection of the aerial plug is. See
SeaMark Coax PL259 VHF Male Connector Plug RG58

Or like an n-type plug.

 

[JustinT]

I took pictures. To be honest it looks all a bit odd to me.

 

[VicS]

I took pictures. To be honest it looks all a bit odd to me.

The pictures are not very clear but I am pretty sure the log is a mechanically driven one. It may have had a right angled gear on the back which would have allowed the drive cable to lie flat against the back of the panel.

I cannot deduce much about the connector from your picture but it does look more like an electrical connector.

What is the impeller like. If it is a little paddle wheel then it is almost certainly for a log driven by electrical pulses.

 

[JustinT]

I think so too. A mechanical log but an electronic paddle. Odd. I think probably someone has had a mess about with it all in the yachts history

 

[earlybird]

The impeller fo rthe Wasp log on my 1st. boat was a forward facing propellor. A bit like a Walker impeller in blade shape and size but hull mounted by means of an integral bracket. The cable went straight into the back of the instrument IIRC, no gears. Can't remember just how the cable was sealed through the hull.