|
Author |
Message |
classic jenny
Joined: 04 Jun 2009 Posts: 12
|
Posted: Sat Oct 31, 2009 4:55 pm Post subject: not good - Austin 8 |
|
|
[/img]
After taking the "8" out I had a knocking. Stopping to check the wheel nuts were tight this is what I found. Thank him upstairs for the slower speeds of these cars now wanted good home if you have a spare Austin 8 wheel |
|
Back to top |
|
|
Rick Site Admin
Joined: 27 Apr 2005 Posts: 22442 Location: UK
|
|
Back to top |
|
|
Jim.Walker
Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield
|
Posted: Sat Oct 31, 2009 9:24 pm Post subject: |
|
|
This looks like a classic case of over-tightened wheel nuts! Why do people think manufacturers supply wheel braces with so little leverage??? The correct torque for most cars is around 30lbf/ft for pressed steel wheels. Any tighter can fracture the wheel centre. Morris Minor owners especially. BEWARE. _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then! |
|
Back to top |
|
|
buzzy bee
Joined: 23 Nov 2007 Posts: 3382 Location: South Cheshire
|
Posted: Sat Oct 31, 2009 10:32 pm Post subject: |
|
|
Hi
Tractor tyres are the exception from this rule, to torque them sufficently, you need at least a 3/4" drive torque wrench, around 260lb (for the ones the other day.
Cheers
Dave |
|
Back to top |
|
|
classic jenny
Joined: 04 Jun 2009 Posts: 12
|
Posted: Sun Nov 01, 2009 11:48 am Post subject: |
|
|
Hi Rick the wheel size is 17in if yours look like the pick then hopefully should fit.
JIm I would agree with you. but unless this was overtightend over the years causing a weekness in the wheel I always fit my own tyres and only use the old trusted spider to tighten the nuts. Having been a tyre fitter many years ago I have seen the results of over tight nuts too often |
|
Back to top |
|
|
Uncle Alec
Joined: 14 Jan 2008 Posts: 734 Location: Manchester
|
Posted: Sun Nov 01, 2009 12:13 pm Post subject: |
|
|
Riley RMs are slightly prone to the wheel centre fracturing - it happened to me a few years ago resulting in a fine and points.
My nuts aren't too tight, they are made of brass. |
|
Back to top |
|
|
Jim.Walker
Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield
|
Posted: Sun Nov 01, 2009 12:55 pm Post subject: |
|
|
Uncle Alec wrote: | Riley RMs are slightly prone to the wheel centre fracturing - it happened to me a few years ago resulting in a fine and points.
My nuts aren't too tight, they are made of brass. |
Even brass nuts can be severely overtightened before they strip! _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then! |
|
Back to top |
|
|
Rick Site Admin
Joined: 27 Apr 2005 Posts: 22442 Location: UK
|
|
Back to top |
|
|
PAUL BEAUMONT
Joined: 27 Nov 2007 Posts: 1281 Location: Barnsley S. Yorks
|
Posted: Thu Nov 19, 2009 1:47 pm Post subject: |
|
|
It would be useful to know the tyre size too!
Using Radial ply tyres can also accellerate this type of failure
PAUL |
|
Back to top |
|
|
Jim.Walker
Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield
|
Posted: Thu Nov 19, 2009 1:58 pm Post subject: |
|
|
PAUL BEAUMONT wrote: | It would be useful to know the tyre size too!
Using Radial ply tyres can also accellerate this type of failure
PAUL |
Would you care to expand on that Paul? I cannot see any reason for that. After all, all the radial and axial forces on a tyre are dictated by the forces on the vehicle, which are only transmitted to the road by the tyres. As radial tyres have softer walls and more 'give' those forces are surely handled in a 'gentlier' fashion? Admittedly the actual tyre tread grip on the road MAY (but not under all conditions) be marginally higher, but not significantly in actual forces on the wheel taking in the performance parameters of classic cars. _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then! |
|
Back to top |
|
|
Peter_L
Joined: 10 Apr 2008 Posts: 2680 Location: New Brunswick. Canada.
|
Posted: Thu Nov 19, 2009 7:40 pm Post subject: |
|
|
Paul raises a point about wheels and the use of Radial tires.
I haven't been able to find if this has been studied in any scientific tests or whether the comment comes from urban legend.
Having said that, I guess we all know that Radial Tires do give us a slightly harder ride than crossply, so if the radial doesn't absorb the same shock, would it be reasonable to presume that more stress is put on the wheel.
Anyone who has driven "roadcars" in competion, racing or rallying, will know that wheels nuts can come loose, so extra strain can cause a problem.
I know that when we take the SUV "up north" we do check the wheel nuts en route. |
|
Back to top |
|
|
PAUL BEAUMONT
Joined: 27 Nov 2007 Posts: 1281 Location: Barnsley S. Yorks
|
Posted: Fri Nov 20, 2009 2:04 pm Post subject: |
|
|
May be Urban myth, but I have come across the problem of cracked rims a few times and it always seems to be associated with rims originally made for cross plies, now fitted with Radial tyres. I suspect, but have no evidence to back it up, that radial ply tyres encourage more adventurous use of a vehicle, so the rims see higher loads on cornering etc?
Anyone else got views?
PAUL |
|
Back to top |
|
|
Jim.Walker
Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield
|
Posted: Fri Nov 20, 2009 2:12 pm Post subject: |
|
|
Cracked centres were not all that uncommon even in the pre-radial days (that comment might fit me - I am probably cracked and I was driving in pre-radial days!).
I have never met cracked rims except on alloy wheels (the use of which frightens me a bit) or as a result of kerbing etc. when pressed steel wheels usually bend anyway. By the way, the type of wheel shown in the earlier post was introduced as the Easy Clean wheel.
Still open to listening and learning from the experiences of others though. _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then! |
|
Back to top |
|
|
47Jag
Joined: 26 Jun 2008 Posts: 1480 Location: Bothwell, Scotland
|
Posted: Fri Nov 20, 2009 2:19 pm Post subject: |
|
|
My understanding is that the radial tyres maintains a more constant contact patch thereby providing better grip especially in cornering. This must increase the forces on the wheelnut due to the higher loads due to leverage. SIMPLES!!
Art |
|
Back to top |
|
|
Nic Jarman
Joined: 05 Oct 2008 Posts: 1031 Location: Stoke by Clare, Suffolk
|
Posted: Fri Nov 20, 2009 2:41 pm Post subject: |
|
|
I must take the Morris 8 for a track day. _________________ 1936 Morris 8 Series 1
1973 MGB roadster
1977 MG Midget 1500
Dax Rush |
|
Back to top |
|
|
|