02GF74 Posted August 22, 2005 Share Posted August 22, 2005 Instead of using air to lock an ARB, would using hydraulic fluid work instead? Something like having a sprung handle on a brake cyclinder with the tubing connected to the locker instead of air line? This would avoid having to have an air compressor and activation would be instant should one forget to turn on the compressor? Quote Link to comment Share on other sites More sharing options...
Les Henson Posted August 22, 2005 Share Posted August 22, 2005 Probably not. Les. You twit, O2 Quote Link to comment Share on other sites More sharing options...
02GF74 Posted August 22, 2005 Author Share Posted August 22, 2005 Probably not.Les. You twit, O2 please explain. (apoligise for triple posting but forum seemed to be taking forever so was not sure if the button was responding). There needs to be some way to transfer force to push something inside the locker; and there'd be a spring inside it to return the something to unlock once the force is removed - why should it matter if the medium is are or fluid e.g. brake oil? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 22, 2005 Share Posted August 22, 2005 Instead of using air to lock an ARB, would using hydraulic fluid work instead? Something like having a sprung handle on a brake cyclinder with the tubing connected to the locker instead of air line?This would avoid having to have an air compressor and activation would be instant should one forget to turn on the compressor? Why ? Air is instant ??? Nige Quote Link to comment Share on other sites More sharing options...
Bush65 Posted August 22, 2005 Share Posted August 22, 2005 It may work, but there could be some disadvantages. The compessability of air works like a spring to keep pressure on the locking mechanism until the teeth are aligned then to fully engage the parts. The sprung handle that you suggested needs to achieve the same, but will it be quick enough? - probably could be! Quick release is the only advantage that ARB air lockers have over Maxidrive. This is most important for the front locker. As the viscosity of oil is greater than air, then it may well be slower to release - remember the hydraulic oil needs to be compatible with what is used in the diff, in the event that the seals leak. Quote Link to comment Share on other sites More sharing options...
Michele Posted August 22, 2005 Share Posted August 22, 2005 I have an air leak at the mo,front diff... ...think if it was oil instead of air... (ouch) As to the compressor:I've fitted an ARB and will keep it until I get a tank, so to go fully pneumatic. See how Andy sorted the thing out in his Ibex i.e. B) Cheers! Quote Link to comment Share on other sites More sharing options...
Niall_CSK Posted August 22, 2005 Share Posted August 22, 2005 I haven't got ARB's but I have a funny feeling that to release they just dump the air to atmosphere not so enviromentally friendly with Hyd Oil. Quote Link to comment Share on other sites More sharing options...
Les Brock Posted August 22, 2005 Share Posted August 22, 2005 and less messy when the pipe cracks ! Quote Link to comment Share on other sites More sharing options...
02GF74 Posted August 22, 2005 Author Share Posted August 22, 2005 (<<<<< quoting is not like it used to be )Why ? Air is instant ??? to remove expense of air compressor. only instant if you switch the compressor on! The compessability of air works like a spring to keep pressure on the locking mechanism until the teeth are aligned then to fully engage the parts. info. like this is what I'm looking for. As the viscosity of oil is greater than air, then it may well be slower to release - remember the hydraulic oil needs to be compatible with what is used in the diff, in the event that the seals leak. maybe be a problem or not; but wheel brakes don't seem to have any problem with releasing once you take your foot off the pedal. Correct desing should over come this. I haven't got ARB's but I have a funny feeling that to release they just dump the air to atmosphere not so enviromentally friendly with Hyd Oil. Now this may be a problem. How does the release work? and less messy when the pipe cracks ! pipes won't crack as flexi hose will be used much in the same way as car brakes. this is all hypothetical at the moment; a little bit more on the concept; something like a car brake master cylinder that is operated by a lever, imagine instad of using your foot on the brake pedal, a handle instead. The handle can be put into 2 positons in a mechansim that is simialar to Series vents and there will be a coiled spring that will somehow limit the maximum prssure (it is just a thought) and also allow the handle to be locked in postion once there is sufficient pressure in the oil. The release should not have any lag since the fluid will be pulled back by the brake master seal. (this would be the flaw. if any, as the seal is not designed to pull fluid butto push it) Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted August 22, 2005 Share Posted August 22, 2005 You can buy an air compressor like this: For £5.99 - how much cheaper do you want? The ARB compressors are just souped up versions of the same thing. Quote Link to comment Share on other sites More sharing options...
VeryDisco Posted August 22, 2005 Share Posted August 22, 2005 (<<<<< quoting is not like it used to be )Why ? you see that leetle button up there on the right of this post with QUOTE on it? Well you can use that to quote the whole post and edit it as you like. Alternatively you can cut and paste your quote, into your reply, then highlight it and select the QUOTE button next to CODE and LIST. Not sure what CODE and LIST do though! Quote Link to comment Share on other sites More sharing options...
Mark90 Posted August 22, 2005 Share Posted August 22, 2005 'List' is for making your shopping list, like this..... Fi's weekly shop: Bread Milk Tea bags Red Wine White Wine Chocolate Baby Oil Cucumber 'Code' is for secret code stuff I could tell you but then.....................you'd know Quote Link to comment Share on other sites More sharing options...
bishbosh Posted August 22, 2005 Share Posted August 22, 2005 PMSL Quote Link to comment Share on other sites More sharing options...
02GF74 Posted August 22, 2005 Author Share Posted August 22, 2005 You can buy an air compressor like this: For £5.99 - how much cheaper do you want? The ARB compressors are just souped up versions of the same thing. ... might as well give up; doubt I could get the flexi-hose for cheaper than that. Quote Link to comment Share on other sites More sharing options...
SteveG Posted August 22, 2005 Share Posted August 22, 2005 Fi's weekly shop:Bread Milk Tea bags Red Wine White Wine Chocolate Baby Oil Cucumber Mark! wait till Fi sees this BTW Just turn on compressor when off-road and leave it running. No delay. Steve Quote Link to comment Share on other sites More sharing options...
LR90 Posted August 22, 2005 Share Posted August 22, 2005 Well my diffs fawked but while it was working I was driving the ARB using a disposable CO2 bottle. No electrics, compressor or gubbins. Just small CO2 tank, regulator and toggle air valve. Next model will use paintball catridges. Quote Link to comment Share on other sites More sharing options...
Michele Posted August 22, 2005 Share Posted August 22, 2005 CO2 tank,that's it! Me too!!! B) I found a more economical source for tanks (muuch cheaper than Powertanks), I just need to find a place for refilling before spending the money. Trev,what happened with the locker? Any pics of the air system? Quote Link to comment Share on other sites More sharing options...
LR90 Posted August 22, 2005 Share Posted August 22, 2005 Locker is fine (I hope!!), think I just bust the R&P Will sort pics when I put the bottle back not that there is much to show. It is out to use with the MIG at present. Quote Link to comment Share on other sites More sharing options...
simonr Posted August 22, 2005 Share Posted August 22, 2005 Hydraulic would work fine - except for the issues with leaking. Cheapest solution for compressed air? Cheap compressor as above. Plastic Lemonade bottle as a reservoir. You can connect it by drilling a hole in the cap and fitting a tyre valve through the hole. don't fit the schrader valve insert. Fit a tube to the threaded bit of the valve with jubilee clips. Get a BIG jubilee clip, big enough to go round the bottle with some spare. Glue a micro-switch to the inside of the jubilee clip and place round the bottle such that when the bottle expands, it squashes the microswitch and switches the compressor off. You can adjust the pressure by adjusting the jubilee clip. The plastic bottles are safe up to about 300psi and not that exciting when they do explode (big bang, not much death). You can build the whole thing for under a tenner! Si Quote Link to comment Share on other sites More sharing options...
SiWhite Posted August 22, 2005 Share Posted August 22, 2005 The plastic bottles are safe up to about 300psi and not that exciting when they do explode (big bang, not much death) Why doesn't it surprise me that you know the bursting point of a plastic bottle....? Quote Link to comment Share on other sites More sharing options...
simonr Posted August 22, 2005 Share Posted August 22, 2005 Can't imagine ;-) Si Quote Link to comment Share on other sites More sharing options...
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