Jump to content

Spectric

Getting Comfortable
  • Posts

    15
  • Joined

  • Last visited

Everything posted by Spectric

  1. Hi there All you need to remember is that the fuse protects the wiring and not what is on the end of it. The idea is that if there was a dead short at the farthest end then the fuse should melt and not the wire.
  2. Hi all Just came across this article discussing three link systems on landys. It is something I have done some work on and in my opinion it is a good system to use if you want to improve the articulation of the front axle. It must be stated that if modifying or fabricating any parts for your suspension then make sure you are using the correct materials and the welding is of a suitable quality, killing yourself is one thing but not some innocent bystander. The std setup is ok & works, but it's failure is in the basic design. The two radius arms provide the dual function of fore & aft location as well as preventing axle rotation. Because of this the axle moves in a large radius around the pivot points of the radius arms & is why the castor angle changes as you increase the suspension height. These radius arms also restrict the articulation because most of the twist occurs from their pivot points. The three link system designed correctly will allow the axle to travel almost vertical & produce minimal changes in the castor angle, but you need the third link to prevent axle rotation, this is where any problems will arise. Not only does this link need to be strong enough to handle the braking loads but you need to get the geometry correct whilst working within the restrictions imposed by the engine sump above. The Safri Guard system was not bad considering it was designed as a bolt on kit, but if you fabricate your own plates and mounts then you can get a neater looking system. You also will need to address the front damper mounts as these are not ideal. During initial testing of anything you are doing something I have used in the past to find things that don't feel quiet right is a fit a small camera to allow you to watch a shaft or bush under load, ie heavy braking and sometimes this reveals something you really did not wish to see. Roy
  3. Hi all Just read this thread & looked at the article and it gave me and my colleagues a real good laugh !!!!!!!!!!!!!!!! They must think that a cylinder head is just a bit of metal with holes in it. They obviously do not understand flow characteristics, swirl & tumble parameters that people spend hours designing into a head design. Bottom line is that in a diesel you want smooth laminar flow upto the cylinder head ports & then let the port, valve & it's location control the characteristic's of flow into the combustion chamber. Forget hyclones etc etc as you want laminar flow into your turbo compressor not turbulence. Roy
  4. Hi Michelle I suppose raising your C of G up to the levels those axles give must make fast road handling like driving a blancmange ! But offroad it must be really capable so perhaps using the axles & air suspension would sort it as then on road you keep it low.
  5. Hi Gelf Sorry to hear you had issues but theres no logical reason for that, probabily a case of sod's law. I was told some time back when I was looking into batteries that the cores in the optima's are made by Exide. Could be why the optima looks like it has had a pair of terminals removed on top ! If cost was not a limiting factor then I would have got Hawker Oddessey that use AGM technology. One thing I have not fully got to the bottom of is the charge cycle of these types of batteries which is different from lead acid types and the charge algorithms used in alternators. This could mean some alternators may not be very good when it comes to charging these liquid free or gel type batteries. Modern alternators are now ultilising things like soft charge & smart charging to increase battery life.
  6. Hi all On my 300 Tdi I have only got a single box and a short exhaust system. The silencer is next to my transfer box and the whole thing finishes short of the rear axle with a nice bend so it points at the road. The silencer I am using is a competition straight through one I brought from Burtons performance many years ago that had been lying round for ages waiting for a use to appear & it did. I have not done any instrumented test or anything but I would say that the turbo spins up faster & is moving more air because I no longer get a lot of black smoke in the midrange. This could also be attributed to the fact I also have a decent sized airbox fitted where my heater used to be that has a pressure drop 6 times lower than the std item bolted to the cylinder head bracket & fitted with a K & N filter ! With a turbocharged diesel you do not need heavy levels of exhaust silencing as noise is not a big issue. Short systems using at least 70 mm bore pipe will allow the turbo to spin up more freely simply because you are increasing the pressure differential across the exhaust turbine. I will say that I do produce a strange noise when going through a tunnel, this I believe is a reverberation of the exhaust gas hitting the floor and bouncing around the tunnel as the outlet is pointing down and is close to the road in comparison to a normal rear outlet.
  7. Hi there If you want real extreme then what about a pair of the Volvo 303 portal axles that have diff lockers as std. Instant ground clearance and don't need to raise suspension more than 1 inch if at all so no issues with castor angles or propshafts.
  8. Hi there If you want real extreme then what about a pair of the Volvo 303 portal axles that have diff lockers as std. Instant ground clearance and don't need to raise suspension more than 1 inch if at all so no issues with castor angles or propshafts.
  9. Hi all I worked all this out some time ago and in simple terms it works out like this. Fit 235/85 x 16 tyres on your defender with 1.44 ratio transfer box and the overal ratio works out to be the same as if you now had a disco 1.2 ratio transfer box. With larger tyres I would not want to run the disco transfer box ratio as well because I think the overall gearing would be to high, especially if you do much towing. My fuel consumption on open roads in my 300 Tdi 90 is around 22 to 25 Mpg best at 65 Mph cruising. 70 Mph + & it drops but at 40 to 45 I can get around 28 to 30 ish.
  10. Hi Jst You want plenty of travel before you hit the stops, & soft bouncy springs. As you said as soon as you hit the stop then all further movement would be put into tilting the body which is not want and is the limit of your axles articulation. To keep the body level you need plenty of unrestricted travel both in compression & droop. But it's like everything, various setups work for differnt people so try everything & see what feels good for you. One thing worth looking into is three link front suspension as this allows greater front axle articulation and also air suspension !
  11. Hi all Fitting a third arm sounds good and I would say the motor is more than capable of the increased load but what about that wire drive cable ? You could have wipers that moved in opposite directions ! I would love to fit a more modern wiper system that does away with that cable drive which is also still used on some forklifts ! Anyone know more about the post 2002 wipers fitted now ?
  12. Hi all The rear x member is designed to rust, landrover just got it so wrong. It's strength is in the design not the material. I have cured mine and it will never rot in my lifetime. Solution is : Take one paddys moped and cut old x member off clean about 3 inches in along both chassis rails and discard. Make a new one from 5 inch u channel which has a wall thickness of 6 mm but make it so that it goes round the rear quarters to offer them good protection. You will need to trim the bottom of the sides of your panels. Prepare the chassis by fitting reinforcing plates to each side of both chassis rails, fitting closure panels on the open chassis ends and fitting 2 spacers between the sides of each rail to prevent crushing when you bolt the new x member on. You will also require plates welded to the top of your new x member to which to fix the rear tub. I will post some pictures when I find out how to on this new forum. Use bumper irons
  13. Hi all When I fitted front tubular turrets I could only go to - 1 inch with the OME dampers & std bump stops. This allowed for 1 1/2 inch of bump stop compression before the damper bottomed out. If this happens then the damper is finished as I was told that there is a valve in there that gets damaged when this happens and is not repairable on OME but is on Koni & some Monroe. Fitting longer bump stops will reduce articulation, but with BIG tyres then it may stop them fouling the eyebrows.
  14. Hi all A good solution for diesels is to use a diesel heater from Webasto or eberspacer. Instant heat and you can have a nice warm vehicle to come back to after a day out walking. It's also handy when you break down and are waiting to be recovered ! The only downside apart from cost is it consumes diesel and is not free heat like the std system. I was given no option because I had to through out the std heater box on my 300 in order to fit a proper sized airfilter assembly and there was no where else to fit it, whereas there were options for a heater.
  15. Hi all Why do people buy these Optima's when you can get the Exide Maxima for less and they are the same spiral cell technology but have four post on top and two on the side. They come in a std type or deep cycle and both are about the same price. I paid £110 inc VAT for my last Maxima ! Also if you use hydraulic or PTO winches then the demand on your electrical system is greatly reduced. Looking at deep cycle batterys I have found that the std vehicle alternator does not have the ideal charge curve characteristic's for this purpose. If you look into marine systems then you find that they use large banks of deep cycle batterys but also with a more elaborate control system that replaces the std regulator in your alternator. By the way hello to everyone and especially those like myself who have migrated from a recently closed down forum that was associated with a magazine run by some orifice normally found between a pair of cheeks ! all the best Roy
×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy