What's This Out Of ?

[Mr B]

This is the universal joint out of my Gemini,

It goes between gear box and Sillette drive leg,

Does any one know what it actually came out of,

I was told by Sillette in the UK that it was an early 60's mini part,

But a bloke here in OZ has every Mini made, and said it never came out of any Mini.

It sheared two bolts, But I drilled them out, welded the holes up and retapped the holes,

I have seen one in a machine years ago, but I cant remember where,

Cheers,
Brian,

[Waterway Guide]

Wouldn't that be interesting! It seems its sole purpose is to reduce vibration, but I've never seen anything else like it.

[captainbri]

I know this is not the answer but it looks like a steering shaft from a vehicle.

good luck with the real answer, there are a lot of knowledgeable people on here and i am sure you will get the correct answer.

[Mr B]

Originally Posted by Waterway Guide

Wouldn't that be interesting! It seems its sole purpose is to reduce vibration, but I've never seen anything else like it.

Do you have one in your Gemini.
Yes it does knock off the vibration,
It is a good uni, But I would like to source a new one locally.

No one here in OZ has even seen one before,

Cheers.
Brian.

[bobconnie]

Have you tryed Commercial Equipment dealers ?looks like joint from land type equipment, rather then marine equipment in the US I would go to Bearings INC they have lots of joints of this type I can't tell from the pics what size it is but im sure you can find it over there ! hope I have helped. Bob and Connie

[bobconnie]

Sorry the Company name is Bearing and Transmission INC in the US B and C

[Waterway Guide]

Yes, Brian...it's the same in mine.

[captain465]

It looks like it might be a "constant velocity" joint........I seem to remember that the old Jeep military vehicles had something that looked very much like that.

[Mr B]

Bolts have sheared off in my Gemini drive unit again and I need a new one,
Can any one tell me where I can get one from,
Or even what its actually called,
I repaired it the last time it broke off,

Lucky it didnt shear off coming home thru Bass Straight or thru the entrance to Westernport bay on Friday night, I was in one hell of a storm and I had nowhere to go,
Rocky cliffs, Waves were making the boat do 180 degree turns, Lock to lock steering to keep it straight,
I was using the lights on shore to keep it straight, The GPS was too slow and couldnt keep up,
It snapped off near the Hastings ship terminal in Westernport bay,
So I put up half the Genoa and was doing 7 knots dragging the drive leg,
It was very windy,
I sailed it to the Entrance to Yaringa Marina, Put the danforth anchor down and it was dragging towards a piling, So I dropped my big new anchor in and that held it,
Got towed in by the search and rescue boat,
My first serious break down sail to test it all out,
The capabilties of this Gemini 105mc catamaran is just incredible,
Safest boat Ive ever been on, This storm I just went thru on Friday night was incredible,
The worst Ive ever been in,
Twice thru the RIP, First time at 3 AM, then coming home at 7 PM, Storm hit at 9 pm, Then 8 hours of storm in Bass Straight at between 3 and 7 knots sliding down the waves, It was spinning the boat around, mostly at 90 degrees and often 180 degrees, It kept me on my toes, Hahahaha,
Entrance to westernport bay was just a big washing machine, at 2-30 AM,




Thanks, Brian,

[Sailmonkey]

https://www.sillette.co.uk/sonic_typ...ran_drive.html

[JohnT]

It looks like the fore-runner of the Vetus Maxwell KO series shaft couplers. Look it up on the internet or speak to your local Vetus agent - they will most likely be able to supply you with a modern replacement..

[mlydon]

Rather than exactly replace it, with the two coupler sizes, bolt patterns, and pilot rings measures, you could get a flex coupling.

Try federal....

Marine Transmissions, Velvet Drive, Paragon, marine transmission parts, <marine transmissions>

Something may fit, or you can have a machinist mod to fit....

Anyway, something along those lines should do you.

Matt

[Mr B]

Thanks for those suggestions, You both put me on the right track,

With Google you need to ask the right questions, I wasnt,

I have quite a few companys now that make what I need, off the shelf,
Vetus, Hardy Spicer, Challenge, Megadyne industries all make what I need,
And modern as well,
My uni joint is so out dated, It also needs to be correctly aligned on the shaft, Duhhh

There are a couple of Uni's that I like and off the shelf, And they dont have the High Priced, Marine Tag on them, Heavy industrial will do the trick,
Industrial Uni's work buried in crap, Dust, Clay, concrete dust, Sludge of every description,
Marine applications are very clean compared to industrial gear,

The Jaws is the simplest, two steel meshing blocks with rubber between them, No alignment needed, Might be a bit short tho in length,
CNC type is the one I really like, Rubber boxed in steel, It should last forever,

Last time I repaired mine, I was in a country town miles from nowhere and no transport,
and no big industry close at hand,
This time, These big companys are local, I can drop the part on the counter and see what they have to replace it,
They can measure it up to get the right one and I can fit it straight into the boat,


Cheers, Brian,