Another fabricated approach with very accurate results is to provide the form of construction as shown in Greg's post on: December 28, 2009, 11:57:04 PM....however parallel hand ream the web holes...again if both sets of web bores could be achieved as a pair each......all the better from an accuracy point
Then add two each longitidunal light triangular gouges ...say 0.002" x 0.002" along the length of the four webs bores
1) Assemble the components dry & [machine drill & taper ream with trefolex] for four x 1/16" taper pins.......naturally the setup here is critical........if it could be achieved between centers all the better
2) When completed, disassemble the components & soak in solvent
3) Reassemble the components using Loctite 7471 Primer + Loctite Super Stud Lock between the webs & the journals
4) Gently tap the 1/16" taper pins until securely home
5) The Loctite stud lock will migrate into any void in the taper pin cavity
http://shopswarf.orconhosting.net.nz/taperpin.htmlLet cure over night [at the recommended curing temperature], the remove the journal internal extension piece & trim the taper pins .......the result will be a truly square & undistorted & stress free crank shaft assembly
So where do we get this form of construction? .......literally modeled from the real world of full size crankshaft engineering
The only down side is that 1/16" BS Taper pins probably come in packs of 100
....Derek