Ivan
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| posted on 26/5/07 at 05:29 PM |
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Quick Rack - Bugatti style or not?
Hi - browsing LocostUSA forum I saw this and thought it's a really simple way to achieve a quick rack - wonder what the authorities would think
of it , although in all fairness if it's good enough for Bugatti it should be good enough for them  - although I think I would go for a double
belt 
 
Bugatti Steering
On second thoughts it might have nothing to do with steering but something to do with timing and/or rev counter as looking carefully appears to be
connected to back of head, but idea could still work although would maybe spoil steering feel. 
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rav
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| posted on 26/5/07 at 06:17 PM |
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I was thinking making a 'quickener' using a pair of sprockets and a chain, or two gears in a simple box, (no one makes a quick rack for a
cinquecento AFAIK) until I discovered that they can be bought off the shelf from the states:
http://www.midwestmotorsportsinc.com/order_sub.php?id=105
The Coleman Pro-lite seems to be the smallest & lightest, availabke in 1.5:1 or 2:1 ratios. they all seem to use 3/4" GM splines.
It should be pretty straighforward, the quickener will fit into the (modified) intermiediate steering shaft with the aid of a couple of splined
sleeves, which can also be bought from stock car suppliers in the states for a few dollars.
Job done!
 
Rescued attachment 22370.jpeg
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Wadders
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| posted on 26/5/07 at 06:19 PM |
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That looks like a magneto, hiding under the scuttle, not sure what the pulley is driving though, as you say maybe its the rev counter?
Originally posted by Ivan
Hi - browsing LocostUSA forum I saw this and thought it's a really simple way to achieve a quick rack - wonder what the authorities would think
of it , although in all fairness if it's good enough for Bugatti it should be good enough for them - although I think I would go for a double
belt
Bugatti Steering
On second thoughts it might have nothing to do with steering but something to do with timing and/or rev counter as looking carefully appears to be
connected to back of head, but idea could still work although would maybe spoil steering feel.
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Mark Allanson
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| posted on 26/5/07 at 06:20 PM |
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The advance retard is a lever on the steering wheel and the dizzy in in the middle od the dash (anyone KNOW why, I'm guessing cooler/drier).
Just an ingenious way of linking the two.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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rusty nuts
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| posted on 26/5/07 at 06:33 PM |
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quote:
Originally posted by Mark Allanson
The advance retard is a lever on the steering wheel and the dizzy in in the middle od the dash (anyone KNOW why, I'm guessing cooler/drier).
Just an ingenious way of linking the two.
Typical Italian electrics!!!
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NS Dev
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| posted on 27/5/07 at 01:19 PM |
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A lot of grasstrack racers used to use the timing gears and chain from a mini, mounted on the column and suiatable brackets, as a steering quickener,
timing drives being ideal at 2:1 ratio
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Ivan
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| posted on 27/5/07 at 02:21 PM |
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quote:
Originally posted by NS Dev
A lot of grasstrack racers used to use the timing gears and chain from a mini, mounted on the column and suiatable brackets, as a steering quickener,
timing drives being ideal at 2:1 ratio
Just out of interest - how does it affect things like steering feel and kick-back.
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NS Dev
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| posted on 28/5/07 at 10:14 AM |
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I've never run that setup myself, so can't really comment.
Kickback should be no worse than a correspondingly fast rack (e.g. the one I use now which is 0.8 turns lock to lock with a lot of lock! ) and
doesn't kick back too badly apart from when you lock wheels with people.
Feel wise I would imagine there will be a bit of extra play, and a bit of notchiness, but no idea really!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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