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    RE ads90's Vosper Firefloat
    by RNinMunich πŸ‡©πŸ‡ͺ ( Fleet Admiral)
    πŸ“£










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    16 Posts 15 Replies 6 Photos 15 Likes
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    Westquay
    Commander
    πŸ“ RE ads90's Vosper Firefloat
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 4 hours ago
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    The real boats, perhaps oddly, all used same direction rotation.
    Martin
    1
    RNinMunich
    Fleet Admiral
    πŸ“ RE ads90's Vosper Firefloat
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    Country: πŸ‡©πŸ‡ͺ Germany
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    Your answer even quicker 😲
    OK, if you don't want to practice twin motor control using two sticks, like tank driver, then I suggest the Action Electronics mixer board (as discussed during your aborted tug conversionπŸ€”). You'll probably need the 20A version with those motors.
    Cheers, Doug 😎
    Young at heart - slightly older in other places πŸ˜‰ Cheers Doug
    NPJ
    Warrant Officer
    πŸ“ RE ads90's Vosper Firefloat
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    Country: πŸ‡¬πŸ‡§ United Kingdom
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    That was quick.............Many thanks for that.

    Will do as you suggest and start a new thread.

    Yes it needs to be easy Doug!
    NPJ.
    NPJ
    RNinMunich
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    πŸ“ RE ads90's Vosper Firefloat
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    Hi Neil,
    Looks like a somewhat simplified Range Safety Launch to me, the 43ft version from 1955 - , but the number is dead wrong.
    http://www.rafboats.co.uk/rsl43.html
    Scale between around 11 - 12 to 1.
    LoA - 11.7
    Beam - 11.1!
    Twin props should ALWAYS turn in opposite directions to counteract the so called prop walk which otherwise shifts the stern sideways in the direction the props are turning - seen from behind when the boat is moving forward. the jury is still out on whether they should turn outwards or inwards; with respect to the top of the prop when going forwards and seen from behind.
    Separate motor control (so called 'Tank Steering') is great for slow speed manoeuvrability and very sharp turns at speed (to be used with caution!), but is not easy and needs a lot of practice!
    A twin ESC / Rudder Mixer is easierπŸ˜‰
    For scale; 3 blade props.
    Suggest you start a new thread for this.

    Ciao, Doug 😎
    http://www.rafboats.co.uk/rsl43.html
    πŸ”—
    1
    Young at heart - slightly older in other places πŸ˜‰ Cheers Doug
    NPJ
    Warrant Officer
    πŸ“ RE ads90's Vosper Firefloat
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    Country: πŸ‡¬πŸ‡§ United Kingdom
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    Is this the right p[lace for..........................

    So this is what I have…………….

    A good size to get my hands in!
    I assume it is a β€˜Tender’ of some sort.

    What is best to do with the β€˜outline’ so it meets some sort of classification?

    At 44inches long and 14 inches wide would that be 1/12 scale?

    Should the twin props both turn the same way (left)?

    Is it worth running motors separately for greater control?

    Two blade prop or three?

    Is there someone there with all the answers?

    Well that will do for a start……………..

    NPJ
    NPJ
    ads90
    Chief Petty Officer 2nd Class
    πŸ“ RE ads90's Vosper Firefloat
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    Many thanks for your 'memoirs' of your life as an RAF National Serviceman - I bet you were glad you weren't the trainee pilot !

    Alan
    nasraf
    Petty Officer 1st Class
    πŸ“ RE ads90's Vosper Firefloat
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    It is a little while ago since this subject was raised but I came across it to day whilst passing my time looking through this continuingly interesting web site, but for what it is worth I will outline a bit I know about the RAF marine branch.

    I was one of the last National Service RAF enlisted men and started my service 5 th April 1960. I was then trained as an Air Wireless Fitter at Yatesbury and on passing the reqired tests was posted to RAF Mountbatten in May 1961, this was sited on the coastline of Plymouth Sound and the marine craft were moored on the Cattewater.

    Not long before I got there, the main base for the RAF Marine activities was on the I. of W. at Calshot but the decision had been made, due to the great contraction of the marine arm, as helicopters had taken over the rescue task and the loss in interest in aircraft operating from water, the MU ( Maintenance Unit ) was moved to the operational station at Plymouth.

    Mountbatten was quite busy with various activities and it was the H.Q. of Coastal Command the other activities was in providing targets for Shackelton training, dingy drill for aircrew and survival training for aircrew on Dartmoor.

    All the useful marine craft were moved to Plymouth and I would imagine things like Fire Floats would have been disposed of prior to the move. All that was at Mountbatten were RTTL's of various standards, RSL's and Pinnance's. The only strange item was an old Rescue Launch which was powered by 3 Napier Lion engines, all the later RTTLs had Rolls Royce Merlin derivatives.

    This was the only large boat that I ever had a fast ride on, but unfortunately we were only a few miles out of the Sound when one of the engines failed and we had to limp home. I never had a fast trip on a RTTL. I used to have lots of trips outside the breakwater on RSL's on RAF crew dingy drill, when the pilot under training had to jump off the boat with his uninflated dingy and when the RSL made as many waves as possible he had to inflate it and climb in whilst the launch continued to rough the sea up as much as possible. He then stayed in his dingy for about 45 minutes which was not very pleasant in winter.
    It was for us lesser mortals an enjoyable spectator sport to see commissioned officers undergoing sme discomfort.

    I think that all the odd marine equipment was lost when Calshot closed.
    3
    boaty
    Chief Petty Officer 2nd Class
    πŸ“ RE ads90's Vosper Firefloat
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    Thanks for your reply and its very interesting.
    Was your model based on an advanced Fire Float that little was known about outside of military circles?

    Bridlington is only a short distance from RAF Elvington which was a bomber base in WW2. in the 1950s it became a V Bomber base and logically it would need to have improved marine rescue facilities to deal with aircraft that had ditched in the North Sea.

    It could be that your boat was built to fulfil this role and there may be a possibility that other Fire Floats may have been constructed for similar uses but not disclosed. 😁😁😁.

    Boaty
    1
    Dave Keech
    Dave M
    Rear Admiral
    πŸ“ RE ads90's Vosper Firefloat
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    Hi ads
    Yes you are correct in that only the Mark2 was accepted by the RAF and were Nos 93 and 94.
    The Mk1 was the initial design but was not considered suitable for purpose hence the modification to the MK2.

    I do believe your model was built by a keen modeller who took or built a hull and placed his own top details based on the Crash Tender and similar designs from the period.

    I did find reference to Bridlington MCU and this corresponds with the number on your model
    https://www.pprune.org/archive/index.php/t-312866.html
    They were active in 1969 and used Pinnace which does rather tie in with the front wheelhouse of your model.
    I have a book somewhere that lists all the MCU details and when I find it I will see what I can find.
    https://www.pprune.org/archive/index.php/t-312866.html
    πŸ”—
    1
    Live long and prosper Dave
    ads90
    Chief Petty Officer 2nd Class
    πŸ“ RE ads90's Vosper Firefloat
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    Dave
    There were only 2 Mk 2 Firefloats built, No.'s 93 and 94 and they had a very different hull at the stern to what my model has. The superstructure could have been modified quite easily but certainly not the hull, so I am certain that it is not one of them. The stern is very reminiscent of the 'Fairmile' design but I have looked at these but nowt turned up. The number on the side of mine '1104' is I believe related to the Marine Craft Unit 1104 at Bridlington which possibly also may have been an ASR.
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