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stuart gowans

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Viewing 15 posts - 1,081 through 1,095 (of 1,986 total)
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  • in reply to: Castings Vs Forgings #1229702
    stuart gowans
    Participant

    The mkV pintles were much the same as mkI’s, but the journal size increased by 1/8″, making them stronger; I was under the impression that the angle remained the same, (through out marks I to XVI) and the increase in rake was achieved by angled plates, of course I could be wrong….

    in reply to: Spitfire Mk1 and 1a differences?? #1229718
    stuart gowans
    Participant

    …or even an exposed top fuel tank, before they fitted the semi-armoured cover – (10swg?).

    Mark

    And the fixed gun sight, also shown in your photo.

    Nearly nine years for this post to be edited, now that’s what I called efficiency………..

    in reply to: Spitfire Mk1 and 1a differences?? #1229860
    stuart gowans
    Participant

    When was the first constant speed prop fitted? didn’t that require a change from Merlin II to Merlim III?

    in reply to: Castings Vs Forgings #1229883
    stuart gowans
    Participant

    Cast anything isn’t going to be as strong as forged, if your Spit is going to be a ground runner, then putting inferior cast components on the under carriage, is at the very least false economy, as has been seen recently, these A/C are prone to ground handling problems, and the last thing you want is to lose all of your prop blades with an U/C collapse.

    Pintles that are no longer airworthy do come up, and if you are concerned with using them (even after NDT) you could always put a “plug” of aluminium inside to help strengthen them, the locks are less easily aquired, (especially the wing mounted part), I would suggest an “over engineered” replacement, from a less exotic type of metal, would be the way to go.

    in reply to: Spit intercostals #1231489
    stuart gowans
    Participant

    I don’t know when they changed, but they are unflanged for the mk v.

    in reply to: Nissan Huts #1234813
    stuart gowans
    Participant

    And building regs relate to historic aviation how exactly??????

    Runways, hangars, fuel storage tanks….

    in reply to: Nissan Huts #1234822
    stuart gowans
    Participant

    I don’t believe that a temporary building , i.e a porta cabin , or caravan/moblie home, is restricted to 28 days, as there wouldn’t be a building contract finished in the whole land! (without somewhere to have a tea break).

    I’ve seen footage of a bridge in the US swaying in the wind, I would have thought that was lateral exitation, surely the problem with the footbridge was a much to do with harmonic frequencies, generated by the people using it ;as I say I’m no expert, ( “X is an unknown quantity, and a spurt, is a drip under pressure”).

    I’ve added a photo of one I made earlier, (about 5 years earlier!) a variation on a theme, but essentially the same.

    in reply to: Nissan Huts #1234850
    stuart gowans
    Participant

    Whilst I am no expert, I have always regarded Nissen huts as “temporary accomodation”, (I use the word “temporary”, in the planning context, i.e something that can be moved in sections, or as a whole, or else easily dismantled).

    I find it hard to believe that current building regs, can be applied to them, as in their original state, short sections could be craned, as the floor joined the walls together, and if clad and bolted, the front and back walls joined the floor to the ceiling (so to speak); probably a bit heavy to move ,if front and back walls were brick!

    in reply to: Nissan Huts #1234898
    stuart gowans
    Participant

    So what are we saying then, “something that has stood for over 60 years in all weathers, without any maintenance what so ever” is potentially dangerous, or is it that the design, (that allowed these buildings to stand for over 60 years in all weathers etc etc) is inherently flawed? I bet that piece of cr@p foot bridge over the Thames passed current regulations ; “it was alright, until people started to walk on it”…..

    in reply to: Nissan Huts #1235033
    stuart gowans
    Participant

    So now they fall down, whereas before they didn’t?

    in reply to: Nissan Huts #1236844
    stuart gowans
    Participant

    Look in the “Working Drawings” section here http://www.nissens.co.uk/ for some info on how they were put together. In theory it’s just a matter of unbolting it all but, as Jon says, it’s never that simple…so good luck!

    Unless the b*ggers are set in concrete …. took an Anderson shelter (feel free to correct the spelling Moggy) down once; concrete gets a little angry when over heated with the oxy/acetelene!

    in reply to: Help With An Engine :) #1238842
    stuart gowans
    Participant

    Well it’s certainly a bit of a puzzle! I would have thought that at that time, the developement of the steam engine being at its zenith, that the expansion system would have been used, i.e starting with a small cyl at high pressure, ending with a big cyl at low pressure.

    The most common of the type being a “triple expansion” these being the most efficient of the type, re using the waste steam in each susequent cyl; certainly all the cylinders on this engine appear to be the same dimension.

    in reply to: Help With An Engine :) #1239187
    stuart gowans
    Participant

    I think the lack of obvious magneto mountings, doesn’t mean that there weren’t any; the gear wheel behind the sprocket, appears to be attached to a camshaft, a similar shaft is evident on the other side , but lacking a gear wheel , they would be the obvious take off points for an ignition system.

    The inlet manifold is missing,(confusing the plot) below that ,what looks like a coolant rail is in place; on top of the cylinders, the flanges may have been part of the priming system, often needed at that time.

    in reply to: Help With An Engine :) #1239486
    stuart gowans
    Participant

    One of the companies that they supplied with boilers was Tidmans, they made small steam engines, (although I don’t know if they ever made the new fangled “infernal combustion engines”)

    in reply to: The Great Crusade. #1239533
    stuart gowans
    Participant

    It’s me again, sorry, but it’s my special day, I’ve always reserved it for the old man, even when he was alive, it was the day when he finally put his life on the line. It’s good to appreciate sympathetic comments from people on this site, especially Kev 35, you really have said it all for people who care, are we the only one’s interested any more.
    I’ve heard nothing on the media today about todays anniversary, however, I’ve just heard on R2, a little piece from John Sentamu, the contraversial Archbishop of York, whats he done today, a parachute jump with the Red Devils, good for him, clerics of any demonation take note, he made a tribute to the events of Normandy as well as to the current British forces and as he admitted, whether he agrees with the wars we are involved with or not, he reckons that our troops are the finest in the world, and it was his tribute to them after all.
    I’m going to take a walk up to the War Memorial now, I’m sure that the park will be full of junky scum, but thats what our fathers fought for after all, the right to life in whatever form.

    As you say Pete, the Archbishop made mention of the fact that it was “D-Day” today, but thus far he was the only one; my son has just returned from France (on a school trip), they did visit the WW1 cemetary whilst there, but there was no mention of the fact that, “D-Day” was only 2 days away, and now like many here, I do think that “we” may be the last to remember, with any real understanding of what it was really like, every successive generation tells the same tale but each time a little is lost (or added).

Viewing 15 posts - 1,081 through 1,095 (of 1,986 total)