Mystery linkage

I didn’t mention this before, to see what information came out, but this came from a chap whose dad worked for International Alloys. It apparently came from the Brabazon, which was being melted down by the firm.

Does anyone know if any of the numbers tie in with Brabazon components and/or which part of the Brabazon it might be?

Looks like a viscous damper for use in a helecopter tail rotor transmission shaft. Sea Kings have a much bigger version. The chamber is filled with hydraulic fluid / oil and reduces the initial torque loading on the rest of the system… or at least that how I THINK it works. I would have to consult my notes…..

The central pin with the U-shaped connectors at each each revolves freely along its axis within the ‘drum’ housing. Also the nut within the U-shaped connector swivels where it is connected at the two sides. Presumably there would have been another at the opposite end which is now missing.

I hope this helps explain how each part of this item moves in relation to the others and thereby provides some idea of its use.

Thanks for the posts so far. Any further information would be most welcome.

Hi there

If the hydraulic unit is sealed, then it is likely to be some sort of damper. So for an aircraft, read anti-shimmy device.

If there are hydraulic connenctions, in and out, then it is an actuator. Any more than that I cannot say.

It reminds me of the linkage at the top of a Jags nose leg for the nose wheel steering – but it isn’t!

C numbers were common on U/C components though.