[Healeys] BN1 Overdrive i.d.

[John Sims]

There is also a very good series of papers about the Overdrive on the
Technical page of my site.



John Sims, BN6

Aberdeen, NJ



http://www.healey6.com



From: Ed Woods [mailto:fogbro1 at comcast.net]
Sent: Saturday, August 15, 2009 4:41 PM
To: J. Scott Morris; Austin Healey
Cc: John Sims
Subject: Re: [Healeys] BN1 Overdrive i.d.



O.K., so what I have is for a BN1. Thanks for the info.



I might add that I've also found that it is basically the same as that used on
the Triumphs, with the same rear case, but for the centrifugal switch, and the
coupling spline on the annulus shaft. The rear case is the same length as all
the 'A' type Triumph overdrives and has a horizontal, flat motor mount.



The later Healey overdrives were considerably shorter and had the rear mounts
set at an angle.



Oh, and the "starts" on the Healey BN1 annulus shaft were not the same number
as the Triumphs, so the speedo ratios would have been different.



But, in a pinch, the TR 'A' type overdrive would fit the 100-4 with a few
differences.



Ed Woods