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Fulcrum pin orientation?

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Tinster

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I am kinda continuing Norton's upper A-Arm thread
but I am a bit concerned about my own front suspension
installation.

I installed my fulcrum pin exactly 180* reverse from
the photo that Norton posted. None of the TR experts
made a comment about the orientation shown in Norton's
photos. Therefore I am guessing I made one of my usual
rookie blunders and installed mine wrong.

Now I am worried because I am driving this car with the
fulcrum pin installed as shown here. If I need to reverse
my fulcrum pins, I really need to know if I made a mistake
before I drive the car again. Will some Triumph expert
please review my fulcrum installation and let me know if
it is correct or if it must be reversed. I'm glad I keep
good photo records of my work!

https://www.scribd.com/doc/525500/fulcrumpin1

Thanks one and all,

d
 
I too faced this conundrum when rebuilding the front of the TR250. The PO had installed them in the orientation opposite to that shown in the Bently manual. So I was not sure if I should leave them that way, or flip them. Best I could tell, the orientation made no difference to the location of the pins themselves and hence wheel alignment. I made them the same as the book, but honestly don't think it matters. But others may have a different opinion.

Rob.
 
I, too, have mine in the same orientation as yours, Dale. I would agree with Rob that, looking at the picture of your removed fulcrum pin, it appears you could place it either way and it would not affect the suspension insofar as the pins at either end seem to be centered between the bolts. Maybe the curvature was done to allow visual or tool access to the back bolts from the tire side (vs engine bay side)?
 
Reversing the fulcrum on a TR is a common trick to get a little negative camber in the front wheels.
 
Dale, I never tried reversing the pin itself, so I don't know if it changes the camber or not (many sources say it does, others say it doesn't).

What I do know is that it won't change it by much, and having the camber a bit more negative than stock will not make the car dangerous to drive, and in fact generally improves handling (at the possible expense of more steering effort). So I wouldn't bother taking it apart just for that.
 
Dale
My take on what was provide to me by yourself and by Paul is that you have them installed correctly.

Remember my initial question was due to the PO have one each way.

Paul's photo's clearly show that the short leg, is oriented outboard with the longer leg inboard towards the engine.
Paul later confirms this with the statement <span style="color: #6600CC">"The fulcrum shown above in Don's picture was actually made for the TR2 & used later on the TR6's and when installed properly on the TR6, it would have the bigger portion of the cutout or the "U" shape facing inward towards the engine. So, the assembly in Don's picture is supposedly reversed as far as the fulcrum goes."</span> This statement was after talking with Dave at TRF, per Paul's post.
Don's photo that Paul refers to is a photo of Norton's left side and as Paul states has the fulcrum pin reversed.

I now have both of mine installed with the bigger cutout facing inboard towards the engine on both sides.

In my opinion I agree with PeterK reversing the pins would only change the camber. This could help or hinder depending on how the rest of the front end geometry was adjusted.

So rest easy.
 
Dale
I believe you have them correct if they are reversed to my photo.

/bcforum/images/%%GRAEMLIN_URL%%/smile.gif
 
Dale,

I commented that yours were correct in my post as well as Heliguy's comments were correct. You didn't take time to read all of the posts.

And yes, it does affect camber if you reverse the correct position.
 
Have had mine installed reversed for over a year now. Yes it does create
slightly negative camber.

If you want more stable cornering and don't mind somewhat increased tire wear this cheap setup is hard to fault. Of course a rear sway bar, lowered ride height and stiffer...well never mind.

Negative camber is good.
 
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