Valve fitting

Not to sure I would be worried about that Grandpa, I am informed that in up to 70deg direct sunlight it would only increase pressure by 25% and that a good tyre (no cracks or perished etc) can be inflated on a normal rim to 200psi without risk.

Not sure I'd go inflating tyres past heir rated maximum (eg 50 psi for BFG A/Ts if I remember). I'd be worried about the ability of the tyre to run on the highway if it has been abused like that.

Surely 50 psi will give you enough blow to clean the back of the CT?

Max

My son left his new soccer ball in the back yard in Broken Hill last year. We were sitting eating lunch when I heard a muffled bang. When I went looking to see what it was I found a flat ball wtih a big hole in the side.

No it had not been all that hard when he left it there and no it was not the middle of summer, probably late Sept or Oct. I accept that a tyre is probably stronger but I would not have believed it would happen even to a soccer ball, I have never seen it that sort of thing happen in Sydney.

Duncs

Hi Andy,

I agree with most of what you say but running straight off a compressor doesn't have enough flow. I have a high quality Compressor mounted to the vehicle already

Sorry Blaze - just re-read your original post! "blowing dust out of the camper"! What you (we) need to do is prevent the dust entering to start with - easier said than done!

I have a Navara twin cab - with fibreglass canopy over the weld body ute bit.

After "one" day on a track, the bloody thing gets full of dust and after two weeks, you could imagine!

I have tracked the problem down to the "venting" of the ute sides so any moisture is evaporated reducing the rust factor (well that's my theory). This is well founded by the evidence that when I do a big muddy patch, there is evidence of mud within the back of the ute - where has it come from?! And that's where all of the dust comes in as well!

So - I have seen camper trailer fridge enclosures with scoops (in and out) protected by a normal engine air filter (both sides). That's good when you're doing 100kmph, but when you're doing 10kmph through bull dust - it won't work that well with my Navara or your camper!

So - what we need to do is create an internal air pressure greater than the dust coming in - simple - now how do we do it?

There are "caravan" vent fans that work on 12V - that exhaust air from a smelly caravan. My thought is that if I mount one the other way (ie pushing air in) with an air filter (car type), I would create appropriate pressure to negate the entry of dust from the road etc!

What do you think?

While I have duel batteries that could support this, it could also be augmented by a solar panel.

When I talked to the 12V Shop a year ago, they really didn't understand why I'd want to put an exhaust fan in upside down!

If we can solve this problem - We'll make a million!

Andy

Hi again Andy,

I must have lead you down the wrong path :-) I don't have any of the trouble with dust ingression into the camper just all over it. May be I'm getting soft but on a mid 30deg day when you pull up to setup camp, with persperation on your arms you start to setup and the external dust turns to muck all over you. Even if not sweating I prefer not getting dust all over me when setting up. As I said I'm getting older and SOFT I guess.. LOL

Bugger - and that took me half an hour to type!!

Now there's a thought Joe, Sounds like a plan. Tell me if you know. Do these extentions depress the valve that is in the original fitting or do you remove this valve and put just one valve in the extention?

If it depresses the valve its definately the go...

The extensions come with an internal plunger that depresses the valve in the tyre's valve stem. Just tweak/modify the plunger in the extender so that when the thread is just starting to take hold on the valve, it will push the valve fully open when the extension is completely wound on.

Now you just have to work out how to flare the other end of the extension a little so the hose won't fly off (hose clamp should be fine)

Try this:

!MPG:3!

Regards
David

Tx Gramps,

I will check with Autopro tomorrow

Blaze,

While lurking in Supercheap I noticed the whatchamacallit I menyioned the other day. It's called Spare-Air ( around $30 ). It's just a piece of tubing with the required fittings at each end that might just do the job.

Dont have a Super Cheap within 200k's but I will give them a call after the weekend, TX for the info.

Geeeze Doug I'd be pretty worried if I blew my head off with 80 or so PSI in a tyre. Lets look at a couple of examples. Not sure if you have seen anyone using PVC pipe to carry around 100 to 120 psi but I've seen heaps and the average mountain bike tyre is inflated to around 60psi, check out the wall thickness of these tyres and the amount that his held onto the rim bead... If you buy one of the medium sized compressors from Repco/Bunnings etc etc have you seen the light yellow plastic tube that they use for an airline.

Probably right Phil... Maybe even better just give a dustpan and brush to SWMBO LOL