handed trunnions
Discussion
The new trunnions are very helpfully labelled L and R for left and right hand threads and the TR6 manual very helpfully tells me that the L goes on the left of the vehicle and the R on the right. So my dilemma is - is the L/R described from the sitting in the drivers seat of from facing the car from in front of the bonnet?
Sounds like a daft question but I haven't been able to find the answer anywhere else!
GB
Sounds like a daft question but I haven't been able to find the answer anywhere else!
GB
Complicated, but explained here I think
http://www.zen11896.zen.co.uk/vixen/swapped.html
No doubt the real experts will be along soon to put me straight
http://www.zen11896.zen.co.uk/vixen/swapped.html
No doubt the real experts will be along soon to put me straight
Thanks guys, I should have made it clear in the original post that the question related to an M series 
Thanks for the L/R clarification Adrian.
Rebuild at the stage where most bits are ready for reassembly to get the rolling chassis sorted. Engine more or less sorted, bodywork lurking in the car-port and will get attention once the chassis is rolling. More here
GB
Thanks for the L/R clarification Adrian.
Rebuild at the stage where most bits are ready for reassembly to get the rolling chassis sorted. Engine more or less sorted, bodywork lurking in the car-port and will get attention once the chassis is rolling. More here
GB
OK, I'll set myself up too - BUT.
I thought that article applies to *ALL* trunion front suspensions (i.e. ones with threads) and so applies equally to Vixens (modded Herald) and to M's (TR6).
The explanation was that as you turn, the trunnion threads make the uprights a small amount longer and shorter respectively, and so this potentially helps the handling if done the right way round.
I reckon for the road though, the change is so small it's likely lost in all the other suspension bushes, etc.
I thought that article applies to *ALL* trunion front suspensions (i.e. ones with threads) and so applies equally to Vixens (modded Herald) and to M's (TR6).
The explanation was that as you turn, the trunnion threads make the uprights a small amount longer and shorter respectively, and so this potentially helps the handling if done the right way round.
I reckon for the road though, the change is so small it's likely lost in all the other suspension bushes, etc.
It is ALMOST impossible to mount M series trunnions on the wrong side of the car, although trunnions are available in 1 1/2, 3 and 7 degree angles (people tend to get it right 1st or 2nd time, even when the parts manual diagram is pictorially incorrect) but with a Vixen the castor angle is set on the chassis lugs and racing boys will tell you that you need only carry one emergency upright and trunnion in your tool kit because they can be put onto the car either or, and put it right later. (IMHO John Upham, is pointing people at the designers thoughts rather than anything else).
Adrian@
Adrian@
Adrian@ said:
people tend to get it right 1st or 2nd time
who are these guys that get it right 1st time!?GAjon said:
As long as the top wishbones are the right way round 
That was almost a 
moment. I had them down as identical but with beginner's luck I've got them the right way round. In fact, it looks like it would be impossible to get it wrong.Thanks again guys,
GB
Adrian@ said:
... trunnions are available in 1 1/2, 3 and 7 degree angles... but with a Vixen the castor angle is set on the chassis lugs and....Adrian@
Just to get this straight in my head, as I have never worked on a TR6 or M.So Vixen/Herald trunnions are 90 degrees bolt to upright, but not on TR6 and there are alternate types ? Er hang on, Castor or Camber ? Extra camber would just require the pivot bolt to be further away from the upright thread, whereas castor would need an (non 90) angled thread to bolt.
Is that right, and which one ? Thanks.
RCK974X said:
Adrian@ said:
... trunnions are available in 1 1/2, 3 and 7 degree angles... but with a Vixen the castor angle is set on the chassis lugs and....Adrian@
Just to get this straight in my head, as I have never worked on a TR6 or M.So Vixen/Herald trunnions are 90 degrees bolt to upright, but not on TR6 and there are alternate types ? Er hang on, Castor or Camber ? Extra camber would just require the pivot bolt to be further away from the upright thread, whereas castor would need an (non 90) angled thread to bolt.
Is that right, and which one ? Thanks.
Yes there are 3 versions of the bronze trunnion with different degree drilling through at the pivot (TVR run the 3 degree version)
I did get corrected on the castor rather than camber and I edited it with a correction..I thank you. wink
On the M adjustment of camber takes place on a slotted top ball joint
Adrian@
Adrian, thanks for that bit of info - I was pretty sure the Vixen (Herald) ones are 90 degrees, and so you can carry just one as an emergency spare. Obviously that's not true for 'M' series !!
And hey, a LOT of car nuts get confused between castor and camber - I was making sure it wasn't *me* that was wrong !!
And of course on the Vixens for camber there is that wonderful ball joint made for the 1935 tractors (or something weird like that...) and hard to find. I got a couple of spares from DG a long time ago.
And hey, a LOT of car nuts get confused between castor and camber - I was making sure it wasn't *me* that was wrong !!
And of course on the Vixens for camber there is that wonderful ball joint made for the 1935 tractors (or something weird like that...) and hard to find. I got a couple of spares from DG a long time ago.
Edited by RCK974X on Thursday 15th March 01:26
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