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CB77 Crankshaft repair

AlanW
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Posts: 167
Joined: Tue Jul 01, 2014 6:33 am
Location: Wirral UK.

Re: CB77 Crankshaft repair

Post by AlanW » Fri Jan 24, 2020 5:28 am

WOW, is there no end to your talents G ?

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G-Man
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Posts: 5678
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
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Re: CB77 Crankshaft repair

Post by G-Man » Fri Jan 24, 2020 11:27 am

Al

Well I think I've just found out......

Today has been spent trying to fix the digital scale on my mill. Very annoying. I've had to resort to my credit card after several frustrating hours. :-(

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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Michael Stoic
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Posts: 310
Joined: Fri Mar 07, 2003 1:35 am
Location: Boston | USA
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Re: CB77 Crankshaft repair

Post by Michael Stoic » Wed Jan 29, 2020 8:18 am

GMan, ...absolutely a pleasure to follow your reports and craftsmanship! What a treat, Thank You!!

I want to find out how the completed motor runs with these artwork "innards!"

__
Michael Stoic

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G-Man
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Posts: 5678
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
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Re: CB77 Crankshaft repair

Post by G-Man » Thu Jan 30, 2020 2:47 am

Michael

Thankyou! These old parts do not deserve to be thrown out . Hopefully I have come up on an economic means of repairing them.

Hopefully, I'll have a bike ready to test an engine in the next few months.

I'll certainly report back. With help from Ken Garfield on the Honda 305 Facebook page I have 'rediscovered' how to build a crank using CB360 rods and Capellini roller cages. No work at all on the rods but the hardened sleeve is more complicated.

Image

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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