rack n pinion steering
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  1. #1
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    rack n pinion steering

    is there any way to adjust aftermarket rack n pinion steering to give a better turning circle.
    With its old steering box it was 5 1/4 turns of the wheel lock to lock and with the new rack n pinion its 3 1/2.
    Thanks

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    Rods 'n' Sods Junkie boblester40's Avatar
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    Quite simply no , the ratio is set by rack and pinion , you would have to change both of these to be able to effect the ratio and to my knowledge this cant be done .

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    Off the Xmas card list kapri's Avatar
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    Turning circle will be dictated by wheelbase and the full lock of suspension . Length of rack ,and therefore available internal lock to lock , is dictated by internal stops . If the wheels reach the same point as before hen you are talking about steering 'quickness /weight' rather than lock.

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    thanks for the replies
    its not got the same turning circle so the wheels don't reach the same point as it had pre rack n pinion.
    I don't know the make but i'll take a good look tomorrow and see if i can get any numbers off it and contact the manufacturer
    I'm having to do a 3 point turn to turn tight corners

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    Possibly but depends on the rack.if theres enough keyways !!! on the inner shaft , the outer could be shortened.this would give you a better turning circle.

    The downside is you may have to re do the rack mounts .you would also have to make sure theres enough room for the tires to turn to full lock
    Rod/custom/drag build profiles:
    Mini | Pop | Porker | Trike | Morris 8

    | 48 chevy coupe | ford f100 | tube chassis,d pop

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    I'll take some photos tomorrow and see if you guys can figure it out. I could work out how to fit it but don't want to start modifying it with my limited front end knowledge

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    Rods 'n' Sods Junkie DEVONMAN's Avatar
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    Shorter steering arms will give a smaller turning circle. But finding some with the correct fitment may be difficult.

    The amount a rack moves from left to right has little to do with the turns at the steering wheel. You probably need to find a rack from a car with similar length steering arms to your existing ones.

    Whats the car ?

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    Shorter steering arms will move the rack pivot points and could cause bump steer.
    Rod/custom/drag build profiles:
    Mini | Pop | Porker | Trike | Morris 8

    | 48 chevy coupe | ford f100 | tube chassis,d pop

  11. #9
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    I think he is referring to the arms on the upright Wayne.
    If the rack has bolt on drumstick type tie rods, then these can be machined to go deeper into the rack body or the rack body can be bored out more for them to go in more....depends on the rack.

  12. #10
    Official RnS Addict mygasser's Avatar
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    yes i thought he meant the arms on the uprights not on the rack too.
    need a job done on your project? i may be able to help.

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