In article <3poag7Fb7404U1@individual.net>, Lee_D
>A while ago we discussed on board air systems and there was some interest in
>a compressor I got for £5 at a forecourt in Dorset touring. Well , just been
>to get a gallon of derv for the Rangie so it has sufficent fuel for it's
>final trip with us tomorrow and local Morrisons (forecourt shop) are doing
>the same compressor £4.99. Nice little unit , fits even in it's box within
>the centre cubby box on a Disco 1. Says it's 300psi but hope never to have
>the need to test it! I got another for our second car as you can pretty much
>guarentee that if I need one it'll be in the other daily driver.
>Anyway enough of the hard sell. I should be on commision here! Just though
>it worth flagging up again given they are in circulation.
We've had a couple for ages too, and they *are* useful. Coupla points:
- They are high current devices. Fitting a locking cigar-lighter plug
(if that's what you use) is a good idea to prevent overheating. I
usually run the engine whilst pumping the tyres, as the higher voltage
seems to help a lot and it doesn't drain the battery so much. I think
they must pull close on 100W. We've got aux power outlets in the back of
the people-carrier, but I wouldn't be tempted because of the extra cable
length (I always use the lighter socket). Delegating a small child to
hold the plug in is good too!
- naturally the compressor part is crude. The older one of ours was
sounding strained recently, much improved by three-in one oil dribbled
into the cylinder. The gears are greased nylon, so I left those alone. I
think this will be a regular thing.
- Even when well-lubricated they struggle to get to 50PSI. I don't think
the castings could cope with 150, let alone 300!
- the pressure gauges on both of them are wildly off target. Obviously I
use another gauge, but the other thing of concern is that tyre pressures
should be measured cold and the output air gets very hot. Thus I usually
give it about 3 PSI more than spec (on the Landy), less in the winter,
which seems to settle back to the pressure I want.
- they are good for pressure, not volume. The kids nearly knackered one
of ours by trying to use it for an inflatable.
SIMON MUIR, UK INDEPENDENCE PARTY, BRISTOL www.ukip.org
EUROPEANS AGAINST THE EU www.members.aol.com/eurofaq
GT250A'76 R80/RT'86 110CSW TD'88 www.kc3ltd.co.uk/profile/eurofollie/