alan kemp Posted August 11, 2006 Share Posted August 11, 2006 Is full hydro steering road legal in the UK, if not is there a way around it. Anyone done it? Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 11, 2006 Share Posted August 11, 2006 Hi Alan, erm sort of, and yes thanks if you need any help let me know Quote Link to comment Share on other sites More sharing options...
maverick Posted August 11, 2006 Share Posted August 11, 2006 on full hydro you will encounter a low top speed limit in the uk Quote Link to comment Share on other sites More sharing options...
alan kemp Posted August 12, 2006 Author Share Posted August 12, 2006 Sort of means?? All I want is for it to pass MOT, no intention of driving it on road other than between sections, Tesco etc.. Jez, is the pic before Billing or have you stripped it down yet. Most impressed with yours, fingertip turning, awesome, thats why I want it!! Have you sorted the wheels yet for disc break conversion? I dont want to buy it and find I have no wheels.. Maverick, portals matey, portals..... still looking for some. Well done with the V8!! Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 12, 2006 Share Posted August 12, 2006 Mot no problem, pic is pre-Ladoga - if you want the same dont be tempted by forklift take-off bits, do it right and its epic, get it wrong and its a nightmare, the new stubs will be here on schedule Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted August 12, 2006 Share Posted August 12, 2006 if you want the same dont be tempted by forklift take-off bits, do it right and its epic, get it wrong and its a nightmare Nowt wrong with fork lift bits, Who needs steering with "feel" anyway? Answer? Girls, who are scared of breaking their (space-saver) axles! Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 13, 2006 Share Posted August 13, 2006 Bring it on baldy I know a nice puddle you can test "Das Boot" in! dive dive dive!! Quote Link to comment Share on other sites More sharing options...
michael calvert Posted August 14, 2006 Share Posted August 14, 2006 not quite fork lift bits but JCB telehandler steering set up would make for adjustment, specially if you managed to fabricate both axles on with four wheel steer and a crab adjustment - bit scary on road mind no doubt Quote Link to comment Share on other sites More sharing options...
michael calvert Posted August 14, 2006 Share Posted August 14, 2006 not quite fork lift bits but JCB telehandler steering set up would make for adjustment, specially if you managed to fabricate both axles on with four wheel steer and a crab adjustment - bit scary on road mind no doubt Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 14, 2006 Share Posted August 14, 2006 you need to work out the travel required from the ram, the speed you want the ram to move at, the fluid capacity of the ram, the displacement of the steering valve (or orbitrol type depending on what you want out of the system), the power you want available and use all that info to decide the pump required. its not tricky, you just need to think about it first Quote Link to comment Share on other sites More sharing options...
pugwash Posted August 14, 2006 Share Posted August 14, 2006 there's a really good guide to hydro steering on Pirate. hang on i'll find the link there's this: Hydro Steer Bible And this to help with the whole pump thing How to tap a PAS pump it's certainly explained a hell of a lot to me Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 14, 2006 Share Posted August 14, 2006 there's a really good guide to hydro steering on Pirate. ahh that'll be squeeky Sean - all round nice guy and superhero Quote Link to comment Share on other sites More sharing options...
pugwash Posted August 14, 2006 Share Posted August 14, 2006 hey jez, Assuming that you had your last vehicle (above) SVA'd did you run into any problems with having no mechanical linkage to the steering column? what is the reference to the speed limit you made? and is this a self-imposed limit (ie do you just accpet that you have been told you can onl do 40 or do you have to have a mod that limits your spee to 40?) what is the steering like at higher speeds and what sort of feel do you get? I would assume that with the huge pressures in the steering system then you have MASSIVE TREs or equiavalent and fairly funky track rod? Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 14, 2006 Share Posted August 14, 2006 Assuming that you had your last vehicle (above) SVA'd did you run into any problems with having no mechanical linkage to the steering column? SV what? its a 68 series 2 with a roll cage - is that my taxi waiting, must go.... what is the reference to the speed limit you made? and is this a self-imposed limit (ie do you just accpet that you have been told you can only do 40 or do you have to have a mod that limits your speed to 40?) I never exceed the legal limit for any given highway.. what is the steering like at higher speeds and what sort of feel do you get? The steering system gives two options, either I can bulldoze or let it respond, self centring isnt affected, it drives just like anything else I would assume that with the huge pressures in the steering system then you have MASSIVE TREs or equiavalent and fairly funky track rod? stock volvo TRE's Quote Link to comment Share on other sites More sharing options...
pugwash Posted August 15, 2006 Share Posted August 15, 2006 Hey Jez, Some more questions if you don't mind (i rather seem to have hijacked this thread- sorry alan) Have you had any probs getting an MOT with this steering setup? what pump are you using- by my calculations i need a pump which flows around 10l/m minimum to get lock to lock of 3 turns and at a rate of 2turns/ second. I can't find any technical info for standard landy pumps- can you help? i don't know if they are fixed or variable displacement. what pump are you using? if you have a fixed displacement pump connected to the crank pulley and you rev the engine don't you get a greater flow velocity? does this not mean that the steering becomes unstable as you rev the engine- i am assuming this doesn't happen but i don't know why? i assume you are using a balacend cylinder- that's what it looks like. did you source it from the UK or the US? is it load reactive? really like this idea- and the more i look at it the more i like it. Don't really want to get caught out by installing Hydro Steering and then not being able to pass either SVA or an MOT! Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 15, 2006 Share Posted August 15, 2006 Have you had any probs getting an MOT with this steering setup? None at all what pump are you using- by my calculations i need a pump which flows around 10l/m minimum to get lock to lock of 3 turns and at a rate of 2turns/ second. I can't find any technical info for standard landy pumps- can you help? i don't know if they are fixed or variable displacement. what pump are you using? ZF74 12ltrs/min before you go off and running send me down the specs of what you want to use, I'll check the maths for you (Im not taking the mick - its just easy to miss calc) Stock landy pumps are about as effective as a bicycle pump if you have a fixed displacement pump connected to the crank pulley and you rev the engine don't you get a greater flow velocity? does this not mean that the steering becomes unstable as you rev the engine- i am assuming this doesn't happen but i don't know why? look at the flow curve of the pumps, refer back to the manufacturers figures and go from there, a ZF74 hits 12ltrs/min at 1000rpm and stays flat from there on out, in my opinion its does exactly what I want it to do i assume you are using a balacend cylinder- that's what it looks like. did you source it from the UK or the US? is it load reactive? From Squeeky Sean in the US, tell him I sent you - he's a good lad really like this idea- and the more i look at it the more i like it. Don't really want to get caught out by installing Hydro Steering and then not being able to pass either SVA or an MOT! MOT is no prob, SVA will be, site the orbitrol in the right place and you can flit from full hydro to conventional in a couple of hours [homer/on]mmmmm modularity [homer/off] Hope that helps? Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted August 15, 2006 Share Posted August 15, 2006 I'm a big fan of full hydro. But... I also need to pass an SVA. Jez - your suggestion of using a regular system and changing after is good and would probably get you through, but I wonder if there isn't a system which maintains a solid mechanically linked system and hydro assist in a robust way - thereby being legal AND 100 percent groovy? I know it exhibits roughly 14.35 percent less bling factor, but... meh. Something like the power steering kit for series landies would probably be a good place to start (obviously useless under these circumstnces - I'm talking about ideas and principles here). If you can brace the input from the hydro against something solid, you're half way there. Anyone got any input on a legal (not just scrape an MOT, but truly DVLA/plod-proof) system? It must be possible, and if it's doing and real road work, having a mechanical link in the background is a nice plan in my opinion. Al. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 15, 2006 Share Posted August 15, 2006 G merc, unimog, ford Cargo because I use landy chassis its a no sweat job to change between the two, Ram assist on a Landy box will provide a stronger solution than a stock system, the D2 box doesnt feature the daft undercut on the sector shaft so a D2 ram assist would be my choice if it had to be green oval, failing that as Dan has just played a rotund bald santa claus Im kinda impressed (god it pains me to say it Dan ) with the G merc box - mega sector shaft on that puppy as an added bit of tech (ish) dont stress about belts failing and you loosing steering, pick the right valve supplier and its not an issue - some nice experts at Billing told me how I wont have any steering when the belt fails, they wouldnt believe me even after I turned the motor off and they watched me turn the wheels lock to lock bless em Quote Link to comment Share on other sites More sharing options...
MasterSplicer Posted August 15, 2006 Share Posted August 15, 2006 I'm a big fan of full hydro. But...I also need to pass an SVA. Jez - your suggestion of using a regular system and changing after is good and would probably get you through, but I wonder if there isn't a system which maintains a solid mechanically linked system and hydro assist in a robust way - thereby being legal AND 100 percent groovy? I know it exhibits roughly 14.35 percent less bling factor, but... meh. Something like the power steering kit for series landies would probably be a good place to start (obviously useless under these circumstnces - I'm talking about ideas and principles here). If you can brace the input from the hydro against something solid, you're half way there. Anyone got any input on a legal (not just scrape an MOT, but truly DVLA/plod-proof) system? It must be possible, and if it's doing and real road work, having a mechanical link in the background is a nice plan in my opinion. Al. There is such a system. I didn't wanted but i have seen these peoples website in US. Can't remember who it was but give this guy a cal and he wil help you out. Sean Stapley Performance Off-Road Systems 1712 Indian Pines Rd. Wetumpka Al, 36093 Phone# 334 567 7229 Fax 334 567 7220 I discussed this stuff with him. I bought full hydr. at his place. Very nice guy to deal with. Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted August 15, 2006 Share Posted August 15, 2006 Have a close look at this pic, he is using full hydro but with the steering box conected to it as well. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 15, 2006 Share Posted August 15, 2006 is he very small Dan? Quote Link to comment Share on other sites More sharing options...
Les Brock Posted August 15, 2006 Share Posted August 15, 2006 is he very small Dan? He's changing the CD Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted August 15, 2006 Share Posted August 15, 2006 Oh no that truck is a full 100" wide Ps. the tyres are 44's to put it in scale Quote Link to comment Share on other sites More sharing options...
dollythelw Posted August 15, 2006 Share Posted August 15, 2006 I think that car is only 2" high and driven by hamsters over pebbles, or possibly the mushrooms in my pasty are a bit suspect... good call on the steering though, I could blend a bit of that in B) cake and eat it anyone?? need to ponder if a pas or non-pas box would be grooviest in that setup Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted August 15, 2006 Share Posted August 15, 2006 I think that car is only 2" high and driven by hamsters over pebbles, or possibly the mushrooms in my pasty are a bit suspect...good call on the steering though, I could blend a bit of that in B) cake and eat it anyone?? need to ponder if a pas or non-pas box would be grooviest in that setup It think he runs staight through orbitrol and a pas box, Imagine how long it would take to get the strokes to run right and get it so that the rams weren't fighting each other Quote Link to comment Share on other sites More sharing options...
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