Dimpleless AD

[Hugz]

Interesting. Good, I can adjust the timing for peak performance!

[Oyster 49]

Yes that's an interesting one. I wonder if it is just an omission?

[Hugz]

I was thinking that too.

[Charles uk]

It looks like a very early one that was built with a coolie hat JM ignition, so the dimple wasn't required at that point in time.

[Hugz]

Do all the new fangled mk1 flywheels have a date? It comes with a rimless mk1. That is period correct l believe. I've forgotten!

[AusAnzani]

Very early AD, I wonder if that's how they were produced?

Other possibility (I guess) is an upper crank case swap at some stage.

For the record I hate those dimples anyway. Makes removal of the ignition plate impossible when the holding screw is siezed

Regards
Spiro

[Hugz]

I've drilled a hole through them in the past and put a small bar through and then use a small tube with two holes which the small bar goes through and then have two larger holes that I use a tommy bar to rotate similar to a box spanner. I think I've seen that tool for an old bit of machinery or clock??

[AusAnzani]

By comparison to many of you guys, I've worked on very few Seagull. So far I've encountered 3 (all AD's) that I could not remove the screw from irrespective of the numerous methods used.

A hex or socket head screw would have been a far better solution ex-factory. Problem with many factories/designers however is they are often inwardly focused and don't consider the product from a service perspective. Not suggesting BS or Villiers fall in to that category, but there are aspects of their product designs that sometimes leave you asking, what were these guys thinking?

For what it's worth, Aussie outboard aren't much better.

Regards,
S