I always liked the idea of the rubber mounts (with safety
captures/latches of some sort) being able to take a bit of the
acceleration/shifting shock-loading out of the system also, although
this might not be a large consideration in lsr stuff.
Benn
----- Original Message -----
From: "Albaugh, Neil" <albaugh_neil@ti.com>
To: "Dick J" <lsr_man@yahoo.com>; "lsr list autox"
<land-speed@autox.team.net>
Sent: Friday, May 12, 2006 9:19 AM
Subject: RE: Engine Mounts - Rubber or Solid
> Good question, Dick.
>
> There are many considerations when deciding which way to go-- rubber
> engine & tranny mounts greatly reduce the noise & vibration that would
> be transmitted into the chassis by solid mounts and a car driven on
the
> street would be pretty unpleasant with solid mounts. On a race car
this
> isn't such a big consideration; solid mounts keep things positively
> located so things like throttle linkage, gear change linkage, etc
remain
> aligned and engine torque doesn't throw everything out of line. The
> engine/tranny can be part of the chassis structure and strengthen &
> stiffen the chassis but one must not allow the loads to distort the
> block to the point of ruining the main bearing & crank clearances.
>
> Solid mounts need to be accurately located-- you can't tighten bolts
to
> pull things together without distorting the block or chassis. Another
> consideration is the possibility of rubber mount failures.
>
> Regards, Neil Tucson, AZ
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