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Thread: Rear suspension test fitted

  1. #11
    SEC Member Allora#2's Avatar
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    Re: Rear suspension test fitted

    Hi,

    looks 355!

    mine Mondial 3,4T looks like this pic.

    Enzo
    Attached Thumbnails Attached Thumbnails a 082.jpg  

  2. #12
    Free user turbonutter's Avatar
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    Re: Rear suspension test fitted

    Not Sure - its a long time since I saw it, I believe its a 355....... it looks like this one

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  3. #13
    Site Supporter ProtoTipo's Avatar
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    Re: Rear suspension test fitted

    Quote Originally Posted by turbonutter View Post
    Not Sure - its a long time since I saw it, I believe its a 355....... it looks like this one
    Yes, I see it's a 355 now. Enzo says the same.
    The drive flanges look really high up on some of the later Ferrari V8s. 'Must work ok though?
    The box must be sideways on (t) and under the diff to save overall length?

  4. #14
    Free user turbonutter's Avatar
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    Re: Rear suspension test fitted

    I'm not sure what box is being used - things changes a lot since the project started. The first engine was a lotus v8 twin turbo, but that was just too long, I think the current plan is with the 355 engine and box. Last i heard back in early 2010 was that the whole rear cradle had been chopped off and a new one made & it was hoped to get the engine fitted in 2010, but I havent had any updates since then....

  5. #15
    SEC Member Allora#2's Avatar
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    Re: Rear suspension test fitted

    yes it's 355 i have both cars! but the engine on Neil picture is 2 serie!

    if i found a frame and Gr.5 body parts as next, i like do do this! a Gr. 5 Stratos with Ferrari engine.

    Enzo
    Attached Thumbnails Attached Thumbnails Mondial 2006.jpg   Ferrari Mondial 06.jpg   enzo's.JPG   355 f 2009.jpg   355 engine 09.jpg  


  6. #16
    Free user turbonutter's Avatar
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    Re: Rear suspension test fitted

    Quote Originally Posted by john View Post
    The attached shows where the top suspension pivots are known to break away on these old chassis.
    Hence Craig and I's work on the rear cradle redesign.
    You might want to beef this area up before you paint it.
    Other picture shows the new design.
    Hi John,

    Just been having a closer look at the suspension pickups on my chassis & have spotted a potential problem on the off side the tube for mounting the top rear wishbone is parallel to the chassis, but on the near side, the tube is at an angle the front being 2cm further out than the rear. I assume that this is a result of the broken parts being welded back where they were and not re-aligned first. This will move the top of the upright rearwards slightly as the suspension rises which as far as I can work out is not a good idea, I believe it could cause some rear wheel steering ? What do you think? At least I have spotted it now, so although I dont want to do anymore welding, its something that can be corrected if necessary... before i install the engine....
    Click image for larger version. 

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  7. #17
    Free user turbonutter's Avatar
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    Re: Rear suspension test fitted

    Thinking again....... the top wont move back when the suspension rises - it will be further back permenantly, so could be sorted with a few mm spacer on the top between the upright & joint, to get the wheels in the same place......?????????

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    Re: Rear suspension test fitted

    Ughhh!, not nice really Neil.
    I would have thought it would induce some bump steer as the top of the upright will move about as the wishbone moves through it's arc. Spacers will get the wheel in the right place at static ride height, say, but it's a dynamic part isn't it?
    It's still parallel to the chassis base plane is it?
    I'm not an expert here mind...except in opening cans of worms!
    Like you say, the new bracing looks pretty effective so moving the pivot tube back into parallel ain't going to be an easy fix.
    I'd have to do it on my own car.

  9. #19
    Free user turbonutter's Avatar
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    Re: Rear suspension test fitted

    Quote Originally Posted by john View Post
    Ughhh!, not nice really Neil.
    I would have thought it would induce some bump steer as the top of the upright will move about as the wishbone moves through it's arc. Spacers will get the wheel in the right place at static ride height, say, but it's a dynamic part isn't it?
    It's still parallel to the chassis base plane is it?
    I'm not an expert here mind...except in opening cans of worms!
    Like you say, the new bracing looks pretty effective so moving the pivot tube back into parallel ain't going to be an easy fix.
    I'd have to do it on my own car.
    I tend to agree in that its something that I should do..... if not, its always going to be in the back of my mind when driving. Need to get my engine built, then I can have a look at both sides and see what needs to be done and how it can be done with a minimum of effort.......

  10. #20
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    Re: Rear suspension test fitted

    I like what Arthur did, and I will probably copy that. John, the single additional tube looks great, but it also looks like it might get in the way of the cable shift mechanism that I'll be using. I'll wait until I get that test fitted to see which way will work better with my setup.

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