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    34" Crash Tender
    by Graham93 πŸ‡¬πŸ‡§ ( Able Seaman)
    7

















    Comments
    6 days ago
    Flag
    Here is my Crash Tender together with the homemade 27MHz transmitter. Built in the early 1970s. The collage photo is from 45 years ago, sailing on the boating lake in Llanfairfechan, North Wales. Recently rescued from the garage covered in dust. Diesel replaced with brushless motor and on the water again. Now in dry dock for a major refit!


    πŸ’¬ Re: 34" Crash Tender
    6 days ago by Martin555 ( Sub-Lieutenant)
    Flag
    Hi,
    Nice.
    What a difference a little clean up makes.

    Martin.
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    πŸ’¬ Re: 34" Crash Tender
    6 days ago by RNinMunich ( Fleet Admiral)
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    Hi Graham,
    Neat! Like the TX as well, neatly doneπŸ‘
    Any chance of a look inside please?
    Did you also build the RX yourself?
    Good luck with the refit.
    Cheers, Doug 😎
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    πŸ’¬ Re: 34" Crash Tender
    6 days ago by robbob ( Commander)
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    This very much reminds me of my own 34" crash tender that I built at around the same time
    I had a series of photos of it along with some other models that I took on my 'Kodak Instamatic' camera but somewhere along the line they were lost which really saddens me 😭
    Nice job on the refurbishment πŸ‘πŸ‘
    Robbob.

    models
    camera
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    πŸ’¬ Re: 34" Crash Tender
    6 days ago by Graham93 ( Able Seaman)
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    Doug,
    Here are a couple of photos of the inside of the Tx. It used a PP9 battery, cheaper in those days than rechargeables! It was based on a circuit in an Application note published by Ferranti. I don't have the original receiver as it was unreliable and I replaced it with one built from an article in RCM&E, which I do have somewhere. I do have the case that I used for the original receiver though, it was a plastic soap dish (!) which I subsequently reused to house a servo tester based on a SN74121 which still works and I have started to use again.
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    πŸ’¬ Re: 34" Crash Tender
    6 days ago by RNinMunich ( Fleet Admiral)
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    Very nice Graham, well doneπŸ‘
    I think my basic problem was getting the coils right!
    My oscillator was erratic and unstable☹️
    I still have some of those 74121s, very useful chips.
    I also built a servo tester using it.πŸ˜‰
    Cheers, Doug
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    πŸ’¬ Re: 34" Crash Tender
    6 days ago by jbkiwi ( Warrant Officer)
    Flag
    Was it McGregors who used to make RC kits in the 70s? Heathkit in the US did I think. We used to have a locally built 'Teletrol set here in the 70s which looked similar to yours but blue. It was a bit of a thing in those days to build a control set. What young person would bother today?
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    πŸ’¬ Re: 34" Crash Tender
    3 days ago by Graham93 ( Able Seaman)
    Flag
    I don’t remember McGregor offering kits in those days. They may have, but the cost would probably been out of my reach. There were companies who advertised in RCM&E who offered kits to build radio equipment, often based on articles in the mag.

    My 27MHz set was scratch built. I worked for a company at the time that had an engineering workshop that I could take advantage of at lunchtime. So the case was folded from aluminium sheet and then covered with red vinyl. The sticks were turned from Perspex. The circuit board was etched in the lab. Sadly I got a better job elsewhere and lost access to the workshop 😠

    radio equipment
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