pugwash Posted March 16, 2007 Share Posted March 16, 2007 from what i understand: 1. There must be a mechanical steering linkage between the steering wheel and the steered wheels to pass SVA on a normal commercial/ passenger vehicle. 2. You can do away with the mechanical linkage but you have to declare as Agricultural thn you are speed limited. 3. MOT man doesn't give a carp, although safe construction regs might come in to it however no one really knows if the above are true then how do the big 4 axle dump trucks with 2 front steerable axles end up roadworthy? are both front axles linked to the steering wheel mechanically- if so, how? Quote Link to comment Share on other sites More sharing options...
western Posted March 16, 2007 Share Posted March 16, 2007 If you mean a twin steer 8 wheel tipper/dump truck like this one, the 2 front steer axles are pyhsically linked by rods/bars/track rod joints to the power steering box/column/steering wheel Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted March 16, 2007 Share Posted March 16, 2007 Whats the prob Pug? Hydro assist is no problem? Its just full hydro thats gonna screw up your SVA, or have I got it all backwards, again? Hydro assist maintains the mech linkage. Al P.S. B****y is not the P/W... (WBBSC) Quote Link to comment Share on other sites More sharing options...
Mark90 Posted March 16, 2007 Share Posted March 16, 2007 Add the hydro assist after the SVA Quote Link to comment Share on other sites More sharing options...
pugwash Posted March 16, 2007 Author Share Posted March 16, 2007 al you're right- i meant full hydro not hydro assist. Mark you're totally right it's just what i am going to do! i was idly wondering about 6x6 or 8x8 vehicles- was thinking of a really funky 8x8 with 3 steerable axles- the front 2 steer when you are driving at speed and the very front and very rear only drive when you really need tight turning- ie they drive in opposite directions! Quote Link to comment Share on other sites More sharing options...
western Posted March 16, 2007 Share Posted March 16, 2007 Some road tankers have a steering rear axle as do some of the latest artic trailer, they lock in the straight ahead position above a certain speed & when unlocked & steering move the opposite way to the normal front steer axles. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.