Cracked waterjacket

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headdownarseup
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Location: bristol

Re: Cracked waterjacket

Post by headdownarseup »

Nice work so far. :P
I like what you're doing with it.
Seeing as this is a bitsa and it doesn't have to conform to any strict rules you can do you're own thing with it. As for a tell tale you can make it as big as you like. It's a bitsa after all.....no rules.
How will you mount a fuel tank onto this creation?

Might i make a small suggestion before you get carried away with a custom made prop.
Why don't you use a conventional 102 gearbox and pumphousing on the bottom of this. The gear ratios might be a bit more up your street for what you want to do with this, coupled with a 102 prop of your choice it's all tried and tested components so there's less guess work involved.

Although i applaud your work so far with a steel prop i feel you might be flogging a dead horse, BUT if you can get it all to work well enough than i think we should applaud you further still.

I admire anybody that can fabricate anything for a specific purpose, even if the materials being used aren't quite what we're all used to.
Give the guy a chance and see what happens eh.


Jon
Liam2k3
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Location: Lancashire

Re: Cracked waterjacket

Post by Liam2k3 »

Some angles from my prop
65 deg
39 deg
so 42deg average
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Liam2k3
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Re: Cracked waterjacket

Post by Liam2k3 »

Cheers jon for the thumbs up. This isnt a motor for the purists. I have a lovely LLS for that. This is just messing around to see if seagull did it right first time or did they just settle for good when it could have been balls out amazing. And this is only a test prop when i have learned roughly where the pitch needs to be i will make one in aluminium.

If it all goes wrong not too much lost it was a scrapper anyway
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Charles uk
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Re: Cracked waterjacket

Post by Charles uk »

That would imply around 24" pitch, that equals almost 23 Mph at 4000 revs with zero prop slip, with a 4 : 1 lower unit.

It's easier to add pitch than to remove it!
Make it idiot proof and someone will make a better idiot.
Liam2k3
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Location: Lancashire

Re: Cracked waterjacket

Post by Liam2k3 »

24” ooops I might have over done it.
I might be going sideways rather than forwards
Adrian Dale
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Re: Cracked waterjacket

Post by Adrian Dale »

about a year ago I posted a detailed crack repair procedure complete with prep wbrasing temps cleanup lapping and reassembly of a middle aged Centry engine that was then used to run continuously at full throttle for non stop 16 hours run around Bruny Island unfortunately I can no longer find the post don't use Belzona or Dove con for a crack repair the crack will continue to propergateAJ,
Liam2k3
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Location: Lancashire

Re: Cracked waterjacket

Post by Liam2k3 »

Found a minute and My fuel tank is mounted. with my alternator mount. Ready for a test run this weekend all being well
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headdownarseup
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Re: Cracked waterjacket

Post by headdownarseup »

I'm liking it :P

Flip up too, there's a novel idea. Is the nut on the flywheel a handmade job or is it repurposed from something else?

Nice job so far, thumbs up from me.

Jon
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Oyster 49
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Re: Cracked waterjacket

Post by Oyster 49 »

Many years ago as a young sea scout I rigged a push bike dynamo onto a seagull flywheel. Worked a treat!
Liam2k3
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Location: Lancashire

Re: Cracked waterjacket

Post by Liam2k3 »

Homemade 30mm af nut. So that it was the same as my LLS engine. Hopefully this motor and regulator should put out enough power to keep my small coolbox running. Keep the beers cold while were out and about.
Liam2k3
Posts: 87
Joined: Mon Oct 23, 2017 3:30 pm
Location: Lancashire

Re: Cracked waterjacket

Post by Liam2k3 »

IT LIVES. woo ha ha ha
Second pull stood in a bucket with a flash light in my mouth.
Couldnt wait till i got down to the water to find out if it was gona start.
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Charles uk
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Re: Cracked waterjacket

Post by Charles uk »

What does the coolbox take?

Your 102 is about 1100 to 1300 watt depending on the cylinder type), measured without the lower unit in place.
Make it idiot proof and someone will make a better idiot.
Liam2k3
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Joined: Mon Oct 23, 2017 3:30 pm
Location: Lancashire

Re: Cracked waterjacket

Post by Liam2k3 »

About 30 cans of carling



48w 12v
headdownarseup
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Re: Cracked waterjacket

Post by headdownarseup »

Have you managed to try out this creation with your homemade prop yet?

Jon
Liam2k3
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Joined: Mon Oct 23, 2017 3:30 pm
Location: Lancashire

Re: Cracked waterjacket

Post by Liam2k3 »

Not with the homemade prop yet. Still tinkering. But the bitsa runs great. Towed my new boat 12miles home at the weekend with the bitsa on the dilligaf dinghy. Never missed a beat all the way.
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