Technical Talk

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Richie
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Re: Technical Talk

Post by Richie » Fri Mar 30, 2018 3:29 pm

It’s all lies unless we see footage of the ram going up and down Bill :D

Well done by the way.
Clarence come out ov zat tank at vonz !

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rob565uk
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Re: Technical Talk

Post by rob565uk » Fri Mar 30, 2018 5:33 pm

What Bill doesn't make clear is that it was me who put the original connections in.

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Renegadenemo
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Re: Technical Talk

Post by Renegadenemo » Fri Mar 30, 2018 6:40 pm

It matters not who put the connections in. Fail as a team, succeed as a team. That's how it works.

Besides, should have seen the teamwork the other night when l dropped a load of fiddly bits from the selector valve into the bilges! :?
I'm only a plumber from Cannock...

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andypugh
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Birmabright

Post by andypugh » Sun Apr 01, 2018 4:42 pm

Asking somewhere else, it was suggested to me that the project might like some Birmabright on the basis that that is what Bluebird was originally covered in.

About 40 years ago my dad managed to wangle 8 8x4 sheets of Birmabright out of the factory to build a camper van with. (He had been working there fixing a rolling mill gearbox and made the right contacts). He never got round to building that particular camper van, and the sheets are still in his barn.
One sheet has been half-used for other projects.

As might be expected, after 40 years in a barn the sheets are dusty and no longer mill-fresh. But are probably rather shinier than I would have expected.

After 40 years the metal might well have age-hardened, and be less useful (I know that BB is not supposed to age-harden, but there are limits)
Also I have no reason to believe that BB is in any way special relative to modern equivalents.

And, finally, I have only my own recollection that the material is Birmaright, and a ten-year-old's memory of collecting it from Birmingham on the way back from holiday. It seems to be unmarked, so grade is equally a mystery.

K7boats
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Refuelling point on the 1958 K7

Post by K7boats » Sun Apr 08, 2018 1:20 pm

Hello all I was wondering and I know someone could tell me if the half cone shaped point on the 1958 Bluebird is the refuelling point? Ive attached a picture any help welcome, the half cone is about half way down hull now on Bluebird it is blanked of by a ovel like shaped aluminium cover.
Thanks,
Al.
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Mike Bull
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Re: Technical Talk

Post by Mike Bull » Sun Apr 08, 2018 3:08 pm

No, it's the external socket for the electric start.
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K7boats
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Re: Technical Talk

Post by K7boats » Sun Apr 08, 2018 7:24 pm

Hello Mike thanks for that Mike could you tell me was the fuel fill in the same place as it was in 66/67 thanks again,
Al.

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Mike Bull
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Re: Technical Talk

Post by Mike Bull » Mon Apr 09, 2018 6:23 am

The fuel tank and the associated flap in the top of the intakes never changed for the life of the boat.
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Canopener Al
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A stupid question .. Or maybe not.

Post by Canopener Al » Fri Apr 13, 2018 1:03 am

Just seen the lead weights appear on the last picture of the day. That picture has raise a question in my head that has been lurking for some time about the restoration of K7. Of course those lead weights had to be added because the money Donald had didn't include during the 66 modifications to actually do the maths accurately to rebalance the boat without trial and error. I would have doubted that the actual weight and moment of the craft was actually worked out until its first trials in late 66 that proved the trim was way out. Of course K7 is not the same trim as the 4th of July 1967, it has half the world supply of polysulphide sealant on it, plus lots of addition metal to repair the holes. I would doubt the trim is anything close to allowing sucessful planning to happen first attempt. While trial and error may only be the solution with funding and outside help, has anyone asked outside help in weight and balance and if anyone in the right field could stick weight and moment calculations into a suitable program to say.. "Stick X pounds there and the thing will rise? Of course if the budget says no, simple answer is go and play..

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Mike Bull
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Re: Technical Talk

Post by Mike Bull » Fri Apr 13, 2018 11:19 am

Well the lead weights countered the huge shift in C of G caused by changing engine types, and of course she behaved herself planing-wise thereafter; in my opinion when she comes out again she'll not be as far from '67 as you might think- remember, a lot of her new metal has been welded in, replacing what was there before; where there are a lot of doublers, such as inside the tail cover, that will if anything add more weight at the back. And while I couldn't speak like-for-like for weights, she was built with sealant originally as well.

Hopefully, she'll not be too far away from her final '67 fettle and might just behave herself out of the box- and if she doesn't and instead wallows about getting nowhere like a certain replica, then we'll smack her bum, get her told, and 'It'll Fix'.
'I am not what is called a "civilized man", Professor. I have done with society for reasons that seem good to me.'

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