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piggy Just got MTs
Joined: 30 Nov 2007 Odometer: 189 Location: gt waldingfield suffolk
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Posted: Sun Jun 14, 2009 8:04 pm Post subject: tubes and tyres
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question,
is the rim size the same on 12.50 x 20 and 10.50 x 20
my mog rims are 9x20
my thought is that all 20 inch tyres would have the same size hole so the rim would be the same
my problem is that my 12.50 tyres are a b*****d to fit over the rim bead face but appear to be loose once fitted to the seat bead
me and unimogler have fitted one tyre and when the tube was inflated there was no bang like you hear on car tyres plus the tyre valve wanted to pull it self into the rim as inflated
what is wrong?
tigermog,
if you are still interested in converting to 12v i have just bought a good quality starter off a man on e-bay, but not from e-bay, so i cant check sale number, i can give you the bosch number it is a gear reduction type and starts my 2.0 merc 4 pot diesel really well pm or call me 07808188802, david
__________________________________ sj,rangerover,90 i have had them all, just fell in love again, its a mog!!
shush dont tell the mog i'm having an affair..... with a spider!!!! |
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dxmedia Mud Obsessed
Joined: 10 Dec 2008 Odometer: 2185
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Posted: Sun Jun 14, 2009 8:21 pm Post subject: Re: tubes and tyres
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piggy wrote: |
tigermog,
if you are still interested in converting to 12v i have just bought a good quality starter off a man on e-bay, but not from e-bay, so i cant check sale number, i can give you the bosch number it is a gear reduction type and starts my 2.0 merc 4 pot diesel really well pm or call me 07808188802, david |
If it's for a merc diesel car, the ring gear is different iirc on the mogs. It's the pitch of the teeth and all that gubbins.
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minimog Off-Road Guru
Joined: 25 Nov 2004 Odometer: 1700
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Posted: Sun Jun 14, 2009 10:01 pm Post subject:
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i think you will find theres no bead ring on the mog rims(you get a slight raised bit on a rim thats designed for a tubeless tyre )where most comercial rims are used with tubes so use that to hold the bead against the wheel as fror being difficult to get over the lip that will be down to the ply rating being high and stiff sidewalls
__________________________________ WHAT YOUR ASKED WHEN YOU OWN A MOG
"why have you put a merc star on that"
UNIMOG MOTTO
"IF IT CARNT BE FIXED WITH A BIG HAMMER"
IT MUST BE AN ELECTRICAL FAULT" |
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The Original Donk Off-Road Guru
Joined: 28 Nov 2004 Odometer: 1638 Location: The Wilds of Wales
1963 Mercedes-Benz Unimog 404 Doka
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Posted: Mon Jun 15, 2009 11:15 am Post subject:
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Quote: | me and unimogler have fitted one tyre and when the tube was inflated there was no bang like you hear on car tyres plus the tyre valve wanted to pull it self into the rim as inflated
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happened to me, as it happened the inner tube was the wrong way round.
As for the tyre difference, it all depends on the number of ply on the tyre, as my michelins were quite supple and easy to put on (5 ply or something like that) I swapped and put some 14 ply tyres on, hell of a lot harder to mount on rims.
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Mr Tyre Mr Tyre
Joined: 17 Jun 2002 Odometer: 4957 Location: Darlington Co Durham
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Posted: Mon Jun 15, 2009 2:16 pm Post subject: Re: tubes and tyres
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piggy wrote: | question,
is the rim size the same on 12.50 x 20 and 10.50 x 20
my mog rims are 9x20
my thought is that all 20 inch tyres would have the same size hole so the rim would be the same
my problem is that my 12.50 tyres are a b*****d to fit over the rim bead face but appear to be loose once fitted to the seat bead
me and unimogler have fitted one tyre and when the tube was inflated there was no bang like you hear on car tyres plus the tyre valve wanted to pull it self into the rim as inflated
what is wrong?
tigermog,
if you are still interested in converting to 12v i have just bought a good quality starter off a man on e-bay, but not from e-bay, so i cant check sale number, i can give you the bosch number it is a gear reduction type and starts my 2.0 merc 4 pot diesel really well pm or call me 07808188802, david |
It does sound like the tube is the wrong way up.If you are going from an 8 ply tyre to a 14 ply tyre you will notice how much more unflexiable the 14 ply tyre is against an 8 ply one.the easiest way to work out which way a tube has to go is to look where abouts on the tube the valve is located.It should be off centre ,that means it's the right way up, if it's facing down it's the wrong way up.As long as you have plenty of lube on the wheel and tyre and the wheel is centralised the tyre will gradually creep up onto the bead.
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