Sparlight boom

[goodtimz]

Hi I have a sparlight boom & mast on my Tri ,the mounting block on the mast end of the boom is loose and wearing the end of the housing . I would like to remove the housing from the boom tube ,it has probley never been removed ,any way i can removed the housing .Thanks Steve

 

[charles_reed]

Depends which Sparlight it is, the W coast USA (very helpful) or the French manufacturer (not so helpful).

I'd suggest contacting the manufacturer.

 

[goodtimz]

The boom is on a tri that was built on the west coast of USA ,but it has a tag or plate saying it was made in England ,so who could i contact Thanks Steve

 

[pvb]

There was a UK Sparlight, based in Chichester I believe, but they went out of business some years ago. Any good rigging firm should be able to advise you on the repair.

 

[goodtimz]

Thanks for all the help ,but it all came to (when you drill out riverts ,make sure that all the rivet is removed,not just the head ) came apart easly after that .Thanks Steve

 

[tjeffery]

Sparlight were based in Southbourne near Emsworth. It was run by John Powell (who designed the first aluminium mast). The company were taken over in mid(ish) 70's by Proctor masts (Ian Proctor Metal Masts of Warsash near Southampton).

I worked in the Design Office at Sparlight just before the take-over. The tag should be a diamond shape predominantly red. There would be a number stamped on it (SPxxxx probably) which is its serial number. If Proctor are still in business they may have original drawings (might be one of mine) which would identify the castings

Goodtimz has it right - just drill out the old rivets and replace with cadmium plated (If I remember). I think there was also a yellow paste put between the casting and boom to help prevent corrosion

This all brings back memories!!

Terryj

 

[carbostar]

HI terryj

How about '3890' a boom, your era ? it took a lot of hammer to get it apart but it will live again, I,m going to have to cast a few bits but hey its all part of the game.

 

[Cemannion]

Sparlight were based in Southbourne near Emsworth. It was run by John Powell (who designed the first aluminium mast). The company were taken over in mid(ish) 70's by Proctor masts (Ian Proctor Metal Masts of Warsash near Southampton).

I worked in the Design Office at Sparlight just before the take-over. The tag should be a diamond shape predominantly red. There would be a number stamped on it (SPxxxx probably) which is its serial number. If Proctor are still in business they may have original drawings (might be one of mine) which would identify the castings

Goodtimz has it right - just drill out the old rivets and replace with cadmium plated (If I remember). I think there was also a yellow paste put between the casting and boom to help prevent corrosion

This all brings back memories!!

Terryj

Hi Terry, I’ve just found a receipt from 1976 for spars we bought for a 53ft ketch we built back then. As a coincidence I now own a Boat called Gulvain which had the very first aluminium spars in 1949. The Boat yard owner , British aluminium and a naval architect held the patent,built by John Powell they were high tensile extrusions with mild steel fittings, I have the original detail drawings from Laurent Giles. The. AST was lost due to a Clovis pin failure in 1973 racing against Ondine in the Isla Mujeres race out of St. Peter sburg florida.
Chris