[DeTomaso] Vibration in Longchamp, part 2

[Mikael]

No but I can maybe one, though shrouded by the lift and chassis cross members. What are you looking for?


Sent from my BlackBerry Classic...
  Original Message  
From: thomas
Sent: tirsdag den 5. maj 2015 21.30
To: Mikael
Cc: <detomaso at poca.com>
Subject: Re: [DeTomaso] Vibration in Longchamp, part 2

Do you have a photo of the shaft, preferably installed on the car?

> 5 maj 2015 kl. 20:55 skrev Mikael <mikael_hass at mail.tele.dk>:
> 
> So wheels are sent to get balanced (won't leave my entire car at any
> shop). And the newly bought inclinometer arrived. Seemed like an
> accurate one, $150, and very consistent. At the diff I measured at the
> flange, 0.00 degrees. At the trans there's always a bit of looseness.
> Measured with propshaft just hanging (on yoke), 0.00 degrees (is it
> "on"? J) and then with the yoke pushed up by hand, 0.40 degrees. So
> trans must be 0.20 degrees up. Does anybody here do this for a living,
> can 0.20 degrees produce a vibration?
> 
> 
> So let's do some math here, and let me know if I got it wrong. There's
> about 115 cm from rear of trans to pivot points (engine mounts). So a
> full circle of the rear of the trans would be "pi" x 115 x 2 = 722 cm.
> With 360 degrees round, that would be 2 cm per degree. And I would have
> to lower the rear of the trans 0.20 x 2 cm= 4 mm. That I've done. Can
> that really make a difference? Looking at the old trans and mount
> versus new, it looks like the new trans is between 4 and 8 mm higher,
> so maybe that's it?
> 
> 
> Also took the chance to turn the propshaft on the rear diff 180
> degrees.
> 
> 
> Will not be able to test for a few days, not too optimistic.
> 
> 
> Mvh/Regards
> 
> Mikael
> 
> Hass Consult ApS
> 
> +45 31770747
> 
> mikael_hass at mail.tele.dk
> 
> 
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