784 replies to this topic

[Ice]

No genius here, I just know how to weld and hammer things into place.

No thats bloody skill
love this build

[turbo76lx]

Had the beam and torsional test done today. The engineer now needs to graph the results to check if it passed but it looks good.

 

 

Attached Files

•  IMG_20170912_124620_resize.jpg   107.63K   16 downloads
•  IMG_20170912_095343_resize.jpg   133.9K   15 downloads

[hanra]

What exactly is involved with that test?

[Bigfella237]

Interesting, I'm really surprised he tested the bare body shell.

 

I know all opening panels (if fitted) have to be ajar during testing but I would've thought the front end panels would lend some strength to the front chassis rails, plus an engine and trans should help tie everything together, and even the glass is structural in some cars? Still I suppose if it passes without those fitted then it should only be stronger when they are?

 

Did you need to make some weight allowance for all the missing stuff? There is roughly 1000kg difference between a shell and a complete car after all!

[Bigfella237]

What exactly is involved with that test?

 

If you're interested Brad, here's some light reading for ya...

 

https://infrastructu...1Jan2011_v3.pdf

 

Pretty much the entire first half of this document (section LT1) covers beaming and torsion testing.

[turbo76lx]

The beam test was all 4 wheels on the stands 6 dial indicators along each side of the car and load 135kg into each

 

passengers seating position and record the results.

 

The torsional test, the rear wheels are fixed down, a beam is attached to the front wheels with a pivot point between the

 

wheels to the ground and weight is applied to the beam to twist the car with 6 dial indicators along each side of the car.  

[rodomo]

Did it pass?

[turbo76lx]

Will be a few days until the engineer can graph the results and see if it passed but the results look good.

[myss427]

My test was very similar, but I had to have the driveline in? With the car so light would it move much? or does he calibrate that to the movement?

[turbo76lx]

Started fixing the rust in the tail light bucket.

 

 

 

 

First had to get dogs ok on the tail light bucket from the spare parts car.

 

 

 

Only going to replace the bottom half but had to do a small repair first.

 

 

 

Had to repair some rust in the corner. 

 

 

 

Bottom replaced.

 

 

 

 

 

[bullitA9X]

Nice work as usual mate love this build 😁😁

[Peter UC]

Have you got your results yet? I want to know the results.

[turbo76lx]

Yes Pete I got the result today and it is all good.

 

This is part of the report.

 

The following details apply to the subject vehicle:

. GVM assessed by calculation to be 1700 kg.

. Front track was 1470 mm.

. Turning moment was 6240 Nm.

. Torsional rigidity was calculated to be 12489 degrees/Nm.

. Beaming deflection with an imposed load was measured to be 0.74 mm.

 

 

 

[turbo76lx]

Yes I think that's what it means, I know the weight that was applied worked out to 6240nm which twisted the car only 0.5 deg.

 

Fixed some more rust fixed under the hatch seal channel and fitted a replacement channel.

 

  

 

Decided to put it back on the rotator to make it easier to start fixing some of the rust and dints in the body.

 

 

[turbo76lx]

Mmmmmmm sun roof.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Only kidding just re-doing the sun roof patch, I rushed it the first time and got a little to much distortion.  

[Ice]

Sunroofs are cool again arnt they

[Peter UC]

Results aren't too bad, at 12,489 Nm/degree the stiffness is roughly was cars around the late 90s early 00s were. I'd imagine a standard Torana would be around 6000Nm/degree?

[turbo76lx]

Pete I think a standard torana  is a bit below the 6000 nm/deg. 

 

Here's a link to a few other cars torsional rigidity.

 

http://beautifullyen...-of-known-specs

 

http://youwheel.com/...rehensive-list/

 

 

[Peter UC]

You're probably right hence the question mark. Toranas are pretty good for their age however and I reckon they would be better than an old Ford Maverick at 4400, they were basically an old Ford Mustang structure.

Having said that the Torana sedans would be better than the hatches though

Edited by Peter UC, 04 October 2017 - 11:51 AM.