Silly question?

[Keith.P]

Also an SD and V.
Sorry about the rubbish pictures, as they are the only motors I can get to in the stores.

IMG_1241.JPG

IMG_1234.JPG

Why has the SD have a timing mark, but not the rest.

[tambikerboy]

Followed by R

[Charles uk]

Take the base plate off Keith it will answer your question.

[headdownarseup]

Chas
I think the question was directed at the 102 with SD stamped into the top crank case half. Look closely and you'll see 2 timing marks made with a centre punch.

The other motor in the second picture looks like an actual SD from ww2, but this time the crankcase is stamped with a V.


Over the last few years i must have seen around half of the alphabet stamped into these crankcases.
This chap with the initials SD seems to crop up quite a lot. There are others of course, but it's fairly common for a 102 to see an initial in the top crankcase half.
When i get 5 mins i'll show you some more if you're interested.


Jon

[Charles uk]

Would that motor need a timing mark, as it's not a coolie hat baseplate is it?

Did you ever see an SD stamped crankcase on an SD, that didn't have a long water jacket cylinder?

But there are a lot without any letters, who built those?

[Charles uk]

Jon I have a vague memory of the SD being cast onto the crankcase i.e. sticking out, rather than stamped into, on some examples am I dreaming?

[headdownarseup]

I think you must be dreaming Chas.

Unless i'm mistaken, just about every seagull, new and old that i've seen, have a serial number (and any initials) stamped rather than cast into the crankcase.

Cylinders however have a lot of numbers and letters cast into/onto them, but not crankcases.


Bear with me and i'll get some more pics of cases with initials.
Back in a bit...



Jon

[tambikerboy]

Along came P and R that's SD - V - P - R all 102's i must say so far and stamped on top half of crankcase over to you Jon

[JERSEYMAN]

Also the earlier SD's did not have "seagull" cast on the upper casing but were plain unlike yours Tam

[Keith.P]

I have a 42 and and a 46, both have Seagull, how far back are you going.

[Charles uk]

All I can say is around 1100 no Seagull, 4000 Seagull. That's all I can check without going out.

I'

[Still trying]

Bingo! Had ago at starting the AD 102 for the first time today, heaps of fuel and it started 1st pull of the rope first run since the early 80s I couldn't believe it nearly had to run away and pee with excitement . Runs great and pumps heaps of water. Thanks for the advice on going though and checking the whole motor and gearbox carefully before trying to run the motor. Carby leaks a bit but that's an easy fix. Now for the boat run.
Cheers Bob

[JERSEYMAN]

Keith, the model I have without the casting "seagull" is SD 1888 L3, the cases are also a slightly different shape, I would say virtually identical to the ON/OP's which raises another question as I have several other earlier SD's with the "seagull" casting.... So, was there a spare stock of ON/OP casings they found tucked away shortly after the SD was in production???

[Hugz]

SD125.P3.

You might also notice the crankcase fasteners are brass. My later SD's as well. My D's are ferrous.

[Collector Inspector]

Seagull lettering 125.JPG

SD125.P3.

You might also notice the crankcase fasteners are brass. My later SD's as well. My D's are ferrous.

Interesting!

I would never have specified Brass for these.......

Every old Dear I have has fasteners of more........metal aye.

I am not Poo Poo here, just saying.

BnC