Category Archives: seal engine build

Last camshaft for Seal engine is started today.

Last camshaft underway today for the Seal 15cc engine Continue reading

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At last I’m back in the workshop building the Seal 15cc engine

Despite an error, progress is made with boring out the cylinder block casting for a Seal 15cc engine designed by Edgar T Westbury in 1947. Go to mikes-models.com for a full description. Continue reading

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Camshafts put to one side as one cylinder block is put to the mill!

The cylinder block casting has the 8 holes for the valves located and a start made with boring one of the 4 cylinder bores. Follow the building of two Seal 15cc engines as designed by Edgar T Westbury 60 years ago. Continue reading

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The second camshaft for the Seal engine nears completion

The second camshaft for a pair of Seal 15cc petrol engines to a design by Edgar T Westbury. The two camshafts that have been made are turned differently to allow (hopefully) the engines to turn contra rotating propellers. Continue reading

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An answer to my question on Seal camshaft!

The answer to a problem of the wrong cam profile fora Seal engine turn out in fact to be a bonus! Since it is the pattern required to run the engine in reverse as it were for powering a contra running engine in a twin engine power boat. Continue reading

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Plea for help in answering a question – Seal camshafts

A question is asked to clear up some confusion over Cam profiles and firing order. Also how best to build a pair to power contra rotating propellers. Continue reading

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Good progress with the Seal Camshafts – will it stay that way?

Three camshaft blanks are being made before profiling the cams takes place. One is being made from steel that will then be hardened as an experiement. They are destined to be used in two Seal engines being built as a twin petrol instalation in a model calssic boat. Follow the build here. Continue reading

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Good progress for a change – one camshaft blank done.

The first proper camshaft blank has been made, only another 2 to go. This is for a pair of Seal 15 cc engines being built to power a classic model power boat. Continue reading

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Whats the difference between Seal castings?

The difference in castings is highlighted when the second set arrives. Both sets are from previous different owners so the original supplier (s) is unknown. Continue reading

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