<div dir="ltr"><div class="gmail_default" style="font-size:small">There must have been modification of the BETA chassis to accomodate the TR4s wider floor pans and engine bay. I've saw a very early TR4 frame that had extension plates bolted to the top of the outriggers to fit the wider body mounts. The diagonal braces for the front spring perches also had to be moved outward to fit the TR4 front inner fender mounts. I don't think the BETA had wider floor pans that the stock TR3.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Dec 30, 2019 at 1:27 PM John via Fot <<a href="mailto:fot@autox.team.net">fot@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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The TR3 BETA chassis actually came first and the later TR4 body was put on it. Frank Marsden engineered the suspension and steering for the TR3 BETA as part of Ray Bates's team tasked with looking into ways to improve the TR. Rack and pinion steering was
something Frank considered important along with the suspension upgrades, hence the wider wings to cover it all. It was considered so successful that the upscaled Zest TR4 body was simply put on the entire TR3 BETA platform.<br>
<br>
And you won't have read that in any book before. Fortunately, I have it all on camera and included it in the minor revision I made to 'Traditional Triumph TR: From the TR2 to the TR6' that I issued a few years ago. If you have the version that includes Frank
Marsden and Ray Bates then you already have the full story.<br>
<br>
John C.<br>
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