Hi Tom,
In that setup, the dogbone allows forwards, rearwards, tilt, and side-to-side
compliance, but it constrains the pinion angle to an arc around the dogbone's
location on the chassis, which is what you want. When a forward driving torque
is applied to the rear wheels, it has the effect of applying an upward force
to the forward end of the torque arm, which then causes the rear tires to get
planted with a force that's proportional to the applied torque.
Dan's setup uses a donut-shaped rubber bushing in place of the dogbone, which
is still very effective while being substantially cheaper, as well as limiting
the lateral play in the torque arm so it won't hit the driveshaft.
Theo
From: Tom Parker [mailto:tkparker1941@gmail.com]
Sent: July 30, 2010 12:38 PM
To: Smit, Theo
Cc: denis mercier; tigers@autox.team.net
Subject: Re: [Tigers] Need help
If the front dogbone pivots as the description states how does that eliminate
spring wrap? The diagram shows the dogbone with a bearing on the bottom. If
there is also one at the top it doesn't just go up and down, it also has the
capacity to move front to back. Am I missing something here?
Tom
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