Triumph 650 crankshaft / 5T crankcase

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Oct 25, 2018
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Good evening,

does a E3892/E3906 crankshaft fit to a 5T crankcase?

cheers
 
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Jul 25, 2010
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After 1956 or whateveritwas , you can see a semi circular bulge / raised whelt , for the BIGGER BEARING under the bottom corner of the timing chest .
However there is , or was , a ' special bearing ' to fit Std Shaft to small bearing case . Timing Side .

Early Cases shaft & housing , timing side , are smaller .

' Big Bearing ' cases run the same bearing Both Sides / Ends of the Crank .

Ball Races are LESS DRAG , ifya wanna gofast . Tho mightnt last as long .
Theallowing of whip actually likely prolongs case life , under severe useage .

s-l225.jpg

Big Bearing Case .
The Casting Dates cast in , on Triumphs . say ' 59 ' or the like .

This hideously grotty crank , is the preferred ' Thruxton ' lighter snappier revier job , from around 1967 .
Wernt suitable for plodding old farts so discontinued . Resemble original P.U. Versions .

full22446845_a.jpg


Canting the injun Fwd reduces vibe transmission .
 
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