Scale RC Forum General News & Discussion General Scale and Crawling Brass shock absorbers mk1

This topic contains 3 replies, has 3 voices, and was last updated by JUNGL1STM4SS1V3 2 months, 2 weeks ago.

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  • #105608
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    JUNGL1STM4SS1V3
    JUNGL1STM4SS1V3
    • Hitting The Trail
    • ★★★

    So I finally got the taps and dies to crack on with my shock absorber design.

    I like to run my shocks without oil for a bit of scale wobble so I wanted to make some internal spring shocks out of brass. Not sure whether these will go on the D90 or if I’ll save them for a new build. I only had enough brass stock to make a pair so I’m in no rush to get them on a car.

    The cylinders are brass (obviously), the shafts are drill rod (W1 I think) and the piston is aluminium, hopefully if it wears it’ll wear faster than the cylinder bore.

    IMG_20190702_150126

    IMG_20190702_150051

    IMG_20190702_150214

    IMG_20190702_150222

    IMG_20190702_150241

    They’re 10mm OD with a 8mm bore, 3mm shaft and threaded 9×1. I’m particularly happy with the thread fit, you cant see the split once together, its like magic.

    I plan on making another matching pair of these once I get my hands on some more brass, then starting work on the mk2 version in which I’ll put seals in the bottom cap so they’ll hold oil.

    Thanks.

    #105610
    Member
    raven62
    raven62
    • Scaling Like A Pro
    • ★★★★★

    Nice and clean work

    Regards

    Ralf

    #105614
    Sysop
    Avatar
    Retrocosm
    • Scale Off Road Pro
    • ★★★★★★

    Yes, they are lovely.

    #105615
    Member
    JUNGL1STM4SS1V3
    JUNGL1STM4SS1V3
    • Hitting The Trail
    • ★★★

    Thanks guys!

    I’d like to do away with the soldered top mount and make it all one piece, like a normal rc shock absorber.

    To do this I need the press fit spherical plain bearings you get in aluminium rod ends.

    Without buying rod ends and pushing them out myself, does anyone know where I might find something like this? They obviously exist somewhere.

    Ideally I want 3mm ID and about 8mm OD. All I’ve been able to find in 3mm ID is 12mm OD for industrial applications, oh and they’re over £20 each…

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