Tribute to Edwardian aero engined cars and Land Speed Record cars of the 1920's - Page 15
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  1. #141
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    Don't forget to tell the folks that your be tigging it paul.
    I'm not the best welder in the world.... but I'm in the top 5!

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  3. #142
    Administrator blackpopracing's Avatar
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    I think Neil & I are talking 2 different things.
    I mean zigzag the weld a little as you weld - dont weld a straight line but imagine you are stitching the 2 pieces of metal together as you weld.

    I think Neil means 'stitching' as running small strectches of weld on the inside - not a continuous weld but just a few 'stitches' around the edges.

    ^^^^^^^Edit - I am talking about mig welding, are you tig welding it?

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    Quote Originally Posted by blackpopracing View Post
    I think Neil & I are talking 2 different things.
    I mean zigzag the weld a little as you weld - dont weld a straight line but imagine you are stitching the 2 pieces of metal together as you weld.

    I think Neil means 'stitching' as running small strectches of weld on the inside - not a continuous weld but just a few 'stitches' around the edges.

    ^^^^^^^Edit - I am talking about mig welding, are you tig welding it?
    Sorry yes a hobby TIG

    So stitching may be the way to go maybe 1/2" weld at 1/2" periods , will be quicker than a seam weld ?

    Also got to save the gas !

    regards Paul

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  6. #144
    Administrator blackpopracing's Avatar
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    1 inch every 4 inches should be fine.

  7. #145
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    You want the fire wall welding to the frame before you stick it to the car paul??
    I'm not the best welder in the world.... but I'm in the top 5!

  8. #146
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    Quote Originally Posted by cc41memorylane View Post
    You want the fire wall welding to the frame before you stick it to the car paul??
    Well you know I am a novice welder so really want to be sat at my workmate welding it !

    Actually I need to get my head around the wood floor/firewall junction and what to do about tying in various other elements :-

    Cockpit side I need a frame for the dashboard/cockpit top between firewall and dashboard that may need to go above the floor to stop it getting messy where they meet ?

    Engine side I am thinking a frame for the battery on the nearside maybe raised up with an open box underneath for some tools or maybe the jack ?

    Anything else I want to fasten to the firewall needs planning now as once it is skinned it will be harder to get to the frame to weld tabs etc to ?

    I suspect I will weld 4 corner plates [ 3mm ] with 6mm holes in them flush on the engine side then I can temporarily bolt the sheeting on and get it trimmed to size , they can stay bolted to hold it when it is welded so win win really.

    Much to do and thing about ...

    regards Paul

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    Official RnS Addict mygasser's Avatar
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    Quote Originally Posted by blackpopracing View Post
    1 inch every 4 inches should be fine.
    That's about what I meant mark.
    need a job done on your project? i may be able to help.

  10. #148
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    I meant do you want me to weld it up for you.
    I'm not the best welder in the world.... but I'm in the top 5!

  11. #149
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    Quote Originally Posted by cc41memorylane View Post
    I meant do you want me to weld it up for you.
    Thanks for the offer , however I am confident I can weld this , 1.5mm is within the range of my welder and my past experience ...

    Obviously you can give me marks out of 10 when you next visit

    regards Paul

  12. #150
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    problems , problems , problems

    Hi all

    Currently have a brain block around a problem I have discovered ......solutions seem to be eluding me at present ?

    However it is very hard to explain why the problem is a problem ?

    maybe some drawings will help ?



    The firewall has both the pedals bolted to it and the steering column and they are very heavy , making the firewall want to collapse into the cockpit ?

    So simples it needs diagonal braces at least pointing aft and pointing forward would not hurt either ?

    However it is very hard to reach the chassis to mount any brace ?

    Going forward the bonnet sides will slope in towards the radiator [ red lines top drawing ] so any brace should be inside the bonnet sides , the chassis disappears a couple of inches from the firewall going forwards so cannot be used to mount a brace.

    So option1 :-
    I could make the 2 red lines from say 1.25" sq fastened to the radiator mount at the front and the firewall at the back and then a diagonal brace on to them ?

    Behind the firewall the chassis will be underneath the floor and so not easy to fasten a brace to as the floor and the sides of the body will need to be tailored to accommodate the brace ? [ see lower 2 lower drawings of possible floor arrangements ]

    option2
    could be mount a brace tied to a dashboard frame and screw the whole thing down to the floor in several places ? Dash frame could also be made from 1.25" if being used as a firewall brace ?

    Other things show on drawing are the sides and floor ? floor will be 4" x 1" boards , however I need the floor as low as possible otherwise it raises both the height of the pedals and steering wheel and seat.

    The front of the bonnet is already 59" tall , I would rather it did not get any higher

    First drawing shows traditional way of mounting floor making the upper surface 2" from the chassis top , current mock up has everything 1/2" from chassis top.

    Second drawing shows floor inset into chassis making floor upper surface level with top of chassis so 1/2" under current mock-up ?

    Blue shows adding tabs to some 1" x 1" x 3mm angle so I can weld it to the top of the chassis , also if I weld some tabs to the angle underneath pointing down it will allow me to fasten the petrol pipe to them on the nearside and the brake pipe to them on the offside.

    Still not getting steel till tomorrow and need to fabricate the radiator mount next , so no progress however plenty of thinking being done !

    regards Paul

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