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extension lead for tyre inflator

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red leader one View Drop Down
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    Posted: 09 Sep 2020 at 12:15
You all need to be sitting down when you read this

I want to check/blow the bike tyres up before it's yearly move for MOT etc.

I'll be using this

It's Technical I know but I'll manage.

However as I will be using the wifeys WAV (Wheelchair Access Vehicle) vehicle,a Caddy which is outside the garage and the inflator wire to the fag lighter is not long enough I'll need an extension.



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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 09 Sep 2020 at 14:38
I would imagine that will be fine; can't see why it would be a problem.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote italianmotor Quote  Post ReplyReply Direct Link To This Post Posted: 09 Sep 2020 at 15:54
Should work fine.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iansoady Quote  Post ReplyReply Direct Link To This Post Posted: 09 Sep 2020 at 16:47
Or just chop the plug off your inflator and fit a couple of crocodile clips then you can put it straight on the battery.The cable in that extension may be on the feeble side.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 09 Sep 2020 at 16:54
I'd back what Ian said. 0.75 sq mm is not enough for the current a tyre inflator will take. It won't burst into flames, but you will get voltage drop so the pump will run more slowly.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote red leader one Quote  Post ReplyReply Direct Link To This Post Posted: 09 Sep 2020 at 23:30
Which is exactly what I was wondering.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 07:50
Do you have any idea what power the tyre pump takes?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BobV7 Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 08:12
I'm probably missing something here but I still use an old foot pump and stick pressure gauge to do the bike tyres.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote V7Chris Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 08:30
Originally posted by BobV7 BobV7 wrote:

I'm probably missing something here but I still use an old foot pump and stick pressure gauge to do the bike tyres.
+1
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 09:59
Wonder how accurate an old stick pressure gauge is. Mine certainly isn't.
Anyway, each to their own. If someone wants to use an electric pump, why not? I have both, but if I need to pump up a van tyre from flat, I prefer an electric pump rather than bouncing on a foot one for half an hour.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote BobV7 Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 10:28
I did a test some years ago on my collection of different types of tyre gauges and the variation was quite amazing as some of the older stick ones were more accurate than the newer ones, which I put down to them being better made. The real question is how much latitude is there in the tyre manufacturers ideal recommended pressures? A couple of psi in either direction can be caused by the ambient temperature and weather, plus pressures will vary considerably in use due to friction caused by speed, rider weight etc. Bloody nightmare ain't it? And of course we all remember that BMW used strict adherence to tyre pressures as a get out clause for the crap handling of the old boxer models!

Quite right, I've got an electric pump for the car. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote V7Chris Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 11:32
My old Dunlop stick gauge has also proved to be the most consistent and reliable over the last 30 years too. The only problem these days it's that my eyes have also aged 30 years and haven't fared quite as well so I struggle to read it without my reading spectacles. I have one of those double action stand type bicycle pumps from Aldi that I keep handy for the bike tyres. Cheap as chips and much less faffing about than the car plug in one that I use for the car. Two strokes puts about one PSI into the VStrom rear tyre so it's not too hard to adjust for luggage and pillion etc.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 11:45
my metal stick gauges are both spot on as ia one of my dial gauges the other reads a bit low ....as for leeway I noticed a difference on rear end on the  V11 Le Mans and the Cali EV if tyres drop 3 psi the V1000 gets a slight, very slight speed movement if back tyre is more than 3-4 psi light too .... mind different tyres do tend to give different results 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote red leader one Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 12:36
Originally posted by Brian UK Brian UK wrote:

Do you have any idea what power the tyre pump takes?


Is this it?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 10 Sep 2020 at 13:45
Yes, that's what we need. So you need a cable capable of carrying 95W (10 Amps max). 0.75 sq mm would be far from ideal really, but looking at other listings several say 60W (5A) max.

Yes I know 95W is actually 8 Amps, but most of these pumps take a surge current when starting.


Edited by Brian UK - 10 Sep 2020 at 13:48
Brian.

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