Twin / Rear engine nova
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Thread: Twin / Rear engine nova

  1. #51
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    Is it just me or dont the drive shafts look like they are at quite a big angle, mostly noticable on the first picture.

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  3. #52
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    Like it's a hire car
    yeah, they are, not ideal, but workable
    Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in sideways, thoroughly used, totally worn out and loudly proclaiming... "f*ck, what a trip!"

  4. #53
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    The first picture is before it got put in a car and saw some weight on it that lowered it.

  5. #54
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    So is it better/easier to go with a trailing arm type setup as opposed to double wishbone style as for example westfield irs?

  6. #55
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    Both systems can be tailored to introduce the sort of changes you want during suspension travel, I wouldnt want to name one as particuarly better than the other as its largely down to the implementation details.
    Double wishbone though, is ultimately more adjustable

  7. #56
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    Quote Originally Posted by chip View Post
    The first picture is before it got put in a car and saw some weight on it that lowered it.
    Dont think so chip, ive had another look and you can see the angle in the second picture but its just not as obvious. What is the maximum angle you should have your shafts at when sitting stationary?

  8. #57
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    Quote Originally Posted by DAMEscort View Post
    Dont think so chip, ive had another look and you can see the angle in the second picture but its just not as obvious. What is the maximum angle you should have your shafts at when sitting stationary?
    Its less in the second picture, and bear in mind that the car still doesnt look finished, so im sure thats not its final position as no doubt there is still weight to go on, also you can tune it with spring rates and settings of course on the dampers.

    Typically you aim to have the driveshaft sat just off of horizontal, so it moves to horizontal and then only just beyond again during suspension travel.

    As mentioned earlier though, I only have a fairly basic understanding of suspension, its not like asking me questions on turbos etc, so hopefully someone like Lee303 will pop along and give a far more detailed reply than Im capable of doing

  9. #58
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    Good to see your making a start fella, those pics of the Mini look cool, suspension looks pretty basic / straight forward so shouldn't be to difficult to knock up something similar, then thats 1/2 the job done, knock up a couple of engine mounts and your away !! lol

    Crack on !!

  10. #59
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    those shafts actually look ok to me, wheel droop on that sort of car isnt going to be massive, so its the bump movement you need to be taking into account
    quite like the trailing arms too, simple yet effective
    the biggest advantage of making your own wishbones/trailing links is that you can do anything you like, and you arent constrained by a manufacturers decisions with regards to getting around steering lugs etc etc and bump steer issues, ultimately, double wishbones are the way to go, unequal length with the dampers on rockers/bell cranks mounted in the middle of the car
    but thats the ultimate, and is very much budget dependant, and i'm not sure how much better a track/road car would be compared to something like the one overleaf, and it is far simpler than trying to work out the geometry on a unequal length double wishbone setup, and still gives you the advantage of just needing a straight coilover with a set open length so will save you cash there
    one thing i will say though, if you can rose joint stuff do, as then any minor inconsitancies with fabricaton can usually be ironed out with a spanner turn or two
    if its just a rear engined nova you are gonna build,you also need to think about the front end, as now it has alot less weight in it and the gemetry of the standard setup wont be great, i really liked austin's setup on his with (mk2 escort?) compression struts and stuff in place of the tie bars
    have a good research into geometry if i were you, vizard does a good ook on suspension setup, good luck with the project
    Originally Posted by Turbostevo
    Lee303. **** off. Your boring me now.
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  11. #60
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    cant wait to watch you chop up your car steve lol

  12. #61
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    I havenít had much time lately but here is how I am getting on.

    I have added some legs, and height adjustable feet. So far I have spent about 25 hours on it. ( I donít seem to have got much done LOL )



    I am going to fix the H beam to the floor and sit the jig into the locating plates.



    I bought this tube notcher from America hopefully this will be a useful tool for making the space frame. It cost about £140 including shipping and import duty.



    This is my digital inclinometer. basically a digital spirit level it cost about £45 of ebay.


  13. #62
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    like the tube notcher
    Originally Posted by Turbostevo
    Lee303. **** off. Your boring me now.
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  14. #63
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    Definately looks like you are going about it all very thoroughly

  15. #64
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    Should be a proper job.

    Id be standing there with an angle grinder , big hammer , butchered nova and a puzzled look on my face.

  16. #65
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    Found this idea to assist in profiling the tubing from another website !!


    There's a very handy program out there called TUBEMITER.EXE
    You can download it from here= http://www.ihpva.org/people/tstrike/tubemiter.exe (right click and save as)

    Just download the program and then run it.
    Goto 'FILE' and 'SETTINGS' change the specifications to the join you want to make (both tube diameters/thicknesses and the angle they join at)
    This should give you something like this:



    Then select print, trim around the outline
    wrap it around your tube and transfer the line onto the tube
    and grind away with a trusty old angle grinder until you match the line.





    Not tried it yet - but it looks like a very good idea (Believe me - I spent weeks profiling my cage tubing - This program would of made things so much easier !!)




    Dave

  17. #66
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    Quote Originally Posted by DaveC_ View Post
    Should be a proper job.

    Id be standing there with an angle grinder , big hammer , butchered nova and a puzzled look on my face.
    that is exactly what i am doing at the moment!

  18. #67
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    Quote Originally Posted by fearless View Post
    Found this idea to assist in profiling the tubing from another website !!


    There's a very handy program out there called TUBEMITER.EXE
    You can download it from here= http://www.ihpva.org/people/tstrike/tubemiter.exe (right click and save as)

    Just download the program and then run it.
    Goto 'FILE' and 'SETTINGS' change the specifications to the join you want to make (both tube diameters/thicknesses and the angle they join at)
    This should give you something like this:



    Then select print, trim around the outline
    wrap it around your tube and transfer the line onto the tube
    and grind away with a trusty old angle grinder until you match the line.





    Not tried it yet - but it looks like a very good idea (Believe me - I spent weeks profiling my cage tubing - This program would of made things so much easier !!)




    Dave
    Thanks good bit of software that !

  19. #68
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    i may of missed something, but are you building the nova space frame, then panelling it or putting the nova on the frame, and building the space frame into the nova?? using that frame above??

    had hard day, and havent had a fresh look at post sorrylmao

  20. #69
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    using the above frame as a jig, which wont be part of the car when finished. If it were me, Id be setting up the nova shell with the front suspension mounts the same ehight off that frame, and the same side to side, ensuring that the centreline of the car is parallel to the girders, and then fixing the frame to the shell. this gives you a strong fixed reference grid on which to build up the back end.

    I havent read any decision yet as to whether its going to have mac struts (****e) trailing arms (easy) or double wishbone IRS (good)
    Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in sideways, thoroughly used, totally worn out and loudly proclaiming... "f*ck, what a trip!"

  21. #70
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    Quote Originally Posted by stevebarker View Post
    Hi, after spending a year or so dreaming about building a rear engine / twin engine nova, I have decided to make a start. ( mainly due to the inspiration in the projects section thanks beardy & lee303 )

    Beardy advised that the best place to begin was to make a jig. So I started construction of this at the weekend, its made from 100x60x5mm box, the steel cost me just over £200 and I have about 10hrs in it so far, next I am going to make some legs for it about 450mm high, and some way of clamping the nova to it.





    Good old Beardy making people spend loads off maoney LOL
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  22. #71
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    Quote Originally Posted by alistairolsen View Post
    using the above frame as a jig, which wont be part of the car when finished. If it were me, Id be setting up the nova shell with the front suspension mounts the same ehight off that frame, and the same side to side, ensuring that the centreline of the car is parallel to the girders, and then fixing the frame to the shell. this gives you a strong fixed reference grid on which to build up the back end.

    I havent read any decision yet as to whether its going to have mac struts (****e) trailing arms (easy) or double wishbone IRS (good)
    I’m not going for the Mac struts, I think the double wishbone setup would be to complex for amature like me lol, so im leaning towards the trailing arm setup!
    Last edited by stevebarker; 13-04-2008 at 15:50.

  23. #72
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    mk4 toyota supra has a superb double wishbone rear set up, i think the arms are alloy as well..
    LET the fun begin.......

  24. #73
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    Re: Twin / Rear engine nova

    I have not had much spare time since I stared this project, but here are some small updates.

    I didnít think things could have got so bad ! ( with the crust )












    Before i started to cut



    30 grinding discs later






  25. #74
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    Re: Twin / Rear engine nova

    30 grinding discs? Christ!

    Finally though, some progress
    Getting Married? 2007bc Photography is a West Yorkshire Wedding Photographer
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  26. #75
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    Re: Twin / Rear engine nova

    any more progress on this

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