Started my Mcsorely 4" chassis today.
Completed stage one to the turned over and tacked stage.
Now the centre line of e is 3mm out and the overall length is 2336 instead of 2334.
Is this acurrate enough
if not will i be able to adjust the centreline later on or will i have to adjust it now

Most production cars are accurate to about 5mm, any inaccuracies can be dialled out when setting up your adjustable suspension

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Originally posted by Mark Allanson
Most production cars are accurate to about 5mm, any inaccuracies can be dialled out when setting up your adjustable suspension

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If it bothers you, you could cut out a few tacks, reposition and retack

Unless your using spherical bearings for suspension then you will have multiple relativerly soft squishy things attching the chassis to the ground.

Also the difference between 2336 and 2334 is less than 0.1%

Dont be too critical,it was rumoured that land rovers were accurate to 1 ".Having worked on hundreds of them and chopped a few chassis I can honestly say it's probably true.but their bushes are a lot bigger than a locost.
In my opinion 3-5mm would be a reasonable tolerance for a Locost type chassis.You will never get your dimensions within a mm when you consider welding and heat distortion.

land rovers were accurate to 1 "

I built a series 3 1975 from a nearly restored chassis up to finish and remember the fun lining everything up.
aah great british engineering

Im full of confidence know...Wheres that torch it will be straight in the morning

thanks lads
graham

I had a Mini with 18mm difference between the 2 sides front to back and it drove brilliantly. I'm not to 3mm any more.

just to concur, I wouldn't worry about that level of inaccuracy, it's only cos you're building it that you notice it, your road car won't be that accurate.

There is a saying that there are 2 man made objects visable from the moon.

The first is the great wall of china
The second is the gap between panel fit on a range rover (i expect this is true for all landrovers).

Some chinese astronaut said that you can't see the Great Wall - but he didn't mention the Range Rover...

David

Good news today chassis back on marks and the 4 uprights 'h' fitted and square.
Gordon in the next unit to me the most talented welder/fabricator i've ever came across voluntered himself to weld up the chassis when it's complete. Although i can weld i feel whooly inadquit next to him and will feel safer at 130mph around knockhill .
My builder Pal Ian's, joiner planed up parts for the jig for the front section i'll just need to screw it together at the right dimensions.
its amazing how many people are willing to help although i think im third in line for a drive nowv

Ive now tacked together the front chassis assembly things going quicker than i hoped.
one question
was i right in keeping the outside face of LA/LB parallel with the chassis centre line if you know what i mean

Your wishbone brackets sit flush on them when you weld them.

It looks odd having the front faces of tubes LA/LB facing out slightly. I got it right first time but ended up cutting the one side out before realising that what looked like a mistake at first was indead correct.

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Originally posted by clbarclay
It looks odd having the front faces of tubes LA/LB facing out slightly. I got it right first time but ended up cutting the one side out before realising that what looked like a mistake at first was indead correct.

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I'm agreeing.

Just thought I had made an error when in fact I hadn't.

Thanks guys only thought about it after tacking LA in place. So thats the first tube cut out and refitted hopefully not many more.
tmrw fitting time then the top rails.
Sooo glad i spotted this early