Saving Old Seagulls

I don't remember anyone trying this before, you could make the centre hole smaller in very small increments until your comfortable with the fit.
Your going to have to do all the R & D yourself to see if these are viable & most importantly SAFE.

Have you tested one yet?

It does appear to be a direct drive 85 from the early 60's.

So your talking figures of around 330 hp a litre in 1949?

No ring when it's an OP not an OA!

No picture

Dave, Seagull crankshafts were made from forged EN 40 B steel which was nitride hardened before being finish ground, the thread & the keyway were machined before the nitride hardening. 7/16 BSF is a 18 TPI thread & 3/8 BSF is a 20 TPI thread, cutting a new 3/8 BSF might well be a difficult t...

Seagull gear oil is SAE 140 that has the ability to form a fairly stable emulsion with any water that might leak into the gearbox & still retains most of it's lubricative properties in this mix. Oils that do not emulsify tend to separate over time leaving the bottom half of the crown wheel baski...

Can you post a picture of your crankshaft problem.

Now that's a comment I agree with 101%!

Glad to see you back with us Hugo!

There has been a lot of posts on here regarding SD data, all will be revealed with some diligent searching.

B S factory standard colour on many of the 170's.

Like the name of number 33, there's another nearly 35 boats where are they ?

It's good to see how much you cherish keeping your Seagulls original!

Thanks!

Come on it's been another quiet year, but please let us know how the race went, with some pictures! Here's the official mail I received, Martine E Purssell To:you (BCC) + 1 more Details Dear all The race was run yesterday – despite the weather gods laughing at us and making the rain date – a true r...