Auxiliary engine

[red42hj]

Hello , I am going to use a silver century on my little sailboat next year, but I want to carry an emergency back up engine. Problem is, lack of space to carry one as big as another century. What would be the most available small 'gull to look out for? I understand the little forty is not good for spares these days.
Thanks. ,red.

[Keith.P]

SJP's seem it be the most common, but when it comes to 40's, they are all pretty much interchangeable when it comes to parts.
The model isn't as impotent, as much as the condition of the motor.

[seagull101]

I have an SJP (40+) that ive been trying to sell for a while, here it is:
viewtopic.php?f=4&t=6283

They are great reliable motors so let me know if you are interested in it.

Jacob

[Charles uk]

Red it would be safer if you told us what this Seagull would be asked to do & where.

[red42hj]

I use the s.century as as an auxiliary motor if I'm becalmed, mostly in the solent. There is a lot of traffic there and much of it moves fast. Last day out, last year, I was becalmed and it broke down for the first time in years. Luckily, we were up the head of the river and we were able to drift down with the tide to get back to the mooring. The second and smaller motor would be down in the after locker simply as an emergency back up. Probably sounds like overkill with 2 motors on a little sailboat but we could have done with it that night. Had it been any other than 5 in the morning, it would have meant tankers and ferries all around us.
Not sure what an SJP is, I' ll check it out when I'm done here. Cheers.

[red42hj]

Oh yes I see, it is a forty plus. What does the coding sjp stand for anyway ?

Jacob, thanks for the offer, I,ll look around down south here first, and come back to you if necessary. Many thanks.

[Hugz]

Not wanting to sound like a traitor but how about an Anzani Pilot. Small, lightweight and swivels 360 to give reverse.

[Charles uk]

How little is the sailboat & what sort of speed does the tide run at?

[red42hj]

The Anzani sounds interesting, I'll read up on it.
The boat is 18 ft. Average tide run is about 3 knts. The s.century copes fairly well. But its just there for getting out of the way of large boats when crossing the river and the wind drops, or manoeuvering alongside a pontoon when it is difficult to sail into a short space.

[Gannet]

Red,
You asked what SJP stands for.
My suggestion is that it stands for Sealed Jacket Plus. And SJM stands for Sealed Jacket Minus.
These engines are the same except for the gearbox and the associated pipes and tubes joining the gearbox to the power head.
They were designed when the LM and LS were the current equivalent models.
The LS was designed when the equivalent current model was the FVP. I have suggested that, as the biggest design change from the FVP to the LS was the increase in stroke, that LS stood for Long(er) Stroke.

Similarily the most significant design change when the SJM/SJP was being designed was the Sealed Jacket feature of the cooling water jacket being sealed from the crankcase. This was to overcome the corrosion problem - mainly electrolytic - of the crankcase of the FVP. It was achieved by completely changing the design of the cylinder block, especially the base which was then bolted to the crankcase rather than having studs passing through the water jacket from crankcase to cylinder head.

Seasonal greetings to all.

Jeremy

[red42hj]

Thanks Jeremy!

[Charles uk]

Follow your logic Jeremy, but where does the LLS fit in & the V in the FV, FVP?

Somewhere I'm sure I've see an add from this era talking about a Seagull Junior.

Do you have any documents that would support your theory?

[Keith.P]

Was the LLS the first square head 102 ?

[Charles uk]

Yep developed 54/55.

[Keith.P]

If an LS was say a Long stroke, Sealed cylinder.
Was the LLS originally known as a century or did it become a century once other models came out and the models were sorted out.
Or was it just the same as an LS, But a Larger, Long stroke, Sealed cylinder motor.