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Alternative steering rack
In my build thread I posted my "new" steering rack.
It's RHD Fiat Punto Mk2 PAS steering rack... TRW 37502372. Rack length (tie rod swivel center to swivel center) is about 530-540mm and about 2,7 lock-to-lock. But... mounted upside-down it's OK for my LHD roadster . RHD builders must use LHD version, but it should be even easier to get appropriate LHD steering rack than for me to get RHD. They cost from £8 (+p&p) for used part and from £55(+p&p) for brand new "replacement". I found that Fiat Croma/Lancia Thema tie rod ends have 12,9mm cone (just like Sierra), and fit Punto Mk2 rack (M12x1,5). But... will I need extensions like when useing Escort rack ? Total length of Punto rack with tie rods and tie rod ends is about 1250mm (between ball joints). Mentioned earlier Croma/Thema tie rod ends are similar length to Punto mk2 (I will check that), so... is it enough ? What is Sierra/Roadster width between tie rod ends ?
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Lucas ZX9R BEC Haynes Roadster - build cost so far: £1125 My build thread "Whatever you can do or dream you can, begin it. Boldness has genius, power, and magic in it." J.W.Goethe |
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On the roadster it's about 135 cm (inexact measuring tape figure)... I think The Ackerman geometry contributes to the bulk of the difference, the trapezium in front of the axis is wider than the one behind the axis.
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Albert Haynes Roadster FAQ | Haynes Builder Locations Gallery, build thread in Lithuanian / via Google Translate. |
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