Fiat Premier Padmini - Shorter turning radius in reverse???

Sujith1100 · 22nd July 2009, 23:45

The turning circle will be same when moving forward and backward. But sharper turns are only possible with rear axle steering/ multiple axle steering which can be observed in CRANES/ TIPPER TRUCKS.
Rear axle steering only can make a vehicle turn a tighter corner hence we use the "reverse and park method".

planet_rocker · 23rd July 2009, 11:48

@ Sujith / Shantanu - that is what i had in mind : fire truck with rear steering wheels. i guess the same thing works when you are reversing in any car FWD & RWD.

Shan2nu · 23rd July 2009, 12:23

Im not talking about reverse parking or reverse steering here.

Consider any normal car with front wheel steering:
If this vehicle is kept at full steering lock and moved forward (in a circular motion) the turning circle caused by the wheels should be indentical to the ones made by the same car going in reverse.

http://www.drivingfast.net/images/te...iff_radius.gif

If the car in the above link moves backwards with the same steering angle, wont it create a circle of the same diameter as the one shown in the pic?

According to my uncle, the circle should be smaller in reverse, which i dont think is possible (unless it has some specially designed differential).

The turning radius of the OHC is 4.8mtrs, i dont think il get a lower figure if i try it in reverse.

Shan2nu

22nd July 2009, 23:45	#16
Sujith1100 BANNED Join Date: Jul 2009 Location: BANGalore Posts: 729 Thanked: 20 Times	The turning circle will be same when moving forward and backward. But sharper turns are only possible with rear axle steering/ multiple axle steering which can be observed in CRANES/ TIPPER TRUCKS. Rear axle steering only can make a vehicle turn a tighter corner hence we use the "reverse and park method".
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23rd July 2009, 11:48	#17
planet_rocker Senior - BHPian Join Date: Sep 2006 Location: Bong-land Posts: 2,323 Thanked: 426 Times	@ Sujith / Shantanu - that is what i had in mind : fire truck with rear steering wheels. i guess the same thing works when you are reversing in any car FWD & RWD.
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23rd July 2009, 12:23	#18
Shan2nu Senior - BHPian Join Date: Feb 2004 Location: Hubli - Karnata Posts: 5,533 Thanked: 125 Times View My Garage	Im not talking about reverse parking or reverse steering here. Consider any normal car with front wheel steering: If this vehicle is kept at full steering lock and moved forward (in a circular motion) the turning circle caused by the wheels should be indentical to the ones made by the same car going in reverse. http://www.drivingfast.net/images/te...iff_radius.gif If the car in the above link moves backwards with the same steering angle, wont it create a circle of the same diameter as the one shown in the pic? According to my uncle, the circle should be smaller in reverse, which i dont think is possible (unless it has some specially designed differential). The turning radius of the OHC is 4.8mtrs, i dont think il get a lower figure if i try it in reverse. Shan2nu Last edited by Shan2nu : 23rd July 2009 at 12:31.
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