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Three bearing engine - centre bearing

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Three bearing engine - centre bearing
DavidL Offline
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Joined: Jan 2018 Posts: 107 Threads: 12
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#11
01-05-2018, 11:25 AM
Reminds me of this article:

http://myweb.tiscali.co.uk/speedex/index...ge2152.htm
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Derek Sheldon Offline
A7CA Rosengart Register
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Joined: Aug 2017 Posts: 532 Threads: 46
Reputation: 5
Location: Oakley, Hants, UK
Car type: 1929 AD Tourer, 1930 Rosengart LR2, Rosengart LR4 Van 1938 APE Tourer (Opal)
#12
01-05-2018, 03:07 PM
My advice would be, ditch th three bearing crank,  buy a Phoenix crank and get the crankcase converted to two bearing.
Then again some people have run three bearing for thousands and thousands of miles
I am always interested in any information about Rosengart details or current owners.
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john williams Offline
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Joined: Aug 2017 Posts: 165 Threads: 29
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#13
01-05-2018, 11:14 PM
(01-05-2018, 07:51 AM)Stephen Barker Wrote: Have put some shims between the centre main clamp bolts and torqued the bearing to 50lbs and the crankshaft rotates reasonably free now, will put the block on and see what difference that makes.
Stephen, putting shims between the centre bearing caps is not a solution. You need to read the article written by the late Jem Marsh of Speedex fame, for the explanation of the cause and remedy for centre main distortion of three bearing crankcases. If you cannot find the Jem Marsh explanation, send me an email jonniejumble@googlemail.com, and I will send you an article I produced for SWA7C, based on Jem's original work. John
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