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Author Topic: 1982 CB650SC Project  (Read 1950 times)

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Offline Hutch

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1982 CB650SC Project
« on: February 15, 2014, 03:20:55 PM »
I've begun a complete tear down of my 1982 CB650SC and hit a couple minor snags.  First off, I can remove the front thru axle from the fork.  It spins freely, and is completely free of the left side of the fork, put I cannot pull it through the right fork lower. 

Second, I cannot loosen the lock nut on the swing arm pivot bolt.  I'm able to spin the pivot bolt a bit with a lot of force.  I've hit the lock nut with liquid wrench and heat, so far it hasn't helped.  Any advice would be appreciated.

Not too exciting pics of the the tear down to follow, I'll document the entire process here.

This is pretty close to what it will look like, only I'll run a small rear fender, clip-ons, and stoke 4-4 exhaust.  I already swapped out the 82 tank for an 1980 cb650 tank, with only minor modifications.
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Offline Hutch

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Re: 1982 CB650SC Project
« Reply #1 on: February 16, 2014, 02:43:13 AM »
Figured out the front axle, it was as simple as removing the pinch bolt completely :o.

Here's a picture of the lock nut on the swingarm pivot, it appears to be 24mm.
« Last Edit: February 16, 2014, 02:49:08 AM by Hutch »
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Offline calj737

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Re: 1982 CB650SC Project
« Reply #2 on: February 16, 2014, 04:23:37 AM »
Was there a cotter pin holding in the pivot bolt? If so, make sure that is removed prior to attempting to turn the castle nut. You may have to re-tighten that nut to expose the pin, then remove the pin.

If the left side has a hole thru the head of the pivot bolt, restrict the left side and turn the nut on the right. Could be some corrosion holding it, an air impact will help turn it loose.
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'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Hutch

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Re: 1982 CB650SC Project
« Reply #3 on: February 16, 2014, 07:22:00 AM »
Impact wrench took care of the job.  Looks like one of the wire harness connectors to the regulator/rectifier was changed by the PO (see the wires in the photo), and its in rough shape.  Any thoughts on whether this can be replaced short of a new wiring harness.  Are the connectors available seperately.

 

« Last Edit: February 16, 2014, 07:24:41 AM by Hutch »
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Offline calj737

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Re: 1982 CB650SC Project
« Reply #4 on: February 16, 2014, 07:55:46 AM »
Those connectors can be had at an electronics store. There's a plastic barb inside to depress that allows the individual wires to be removed from the back, with the spade connector attached.

Just reinstall the spade connectors into the new connector plug.
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'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Hutch

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Re: 1982 CB650SC Project
« Reply #5 on: February 16, 2014, 11:01:41 AM »
The day I brought her home...




now...

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Offline apetersonboy

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Re: 1982 CB650SC Project
« Reply #6 on: February 16, 2014, 01:51:32 PM »
Are you planning on making side covers like the ones on the bike in your inspiration picture?
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Offline Hutch

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Re: 1982 CB650SC Project
« Reply #7 on: February 16, 2014, 02:45:52 PM »
Yes, very similar except with rounded corners (both inner and outer).  I'll use perforated aluminum with a 1" or so solid aluminum edge.  I'll also follow the contour of the frame as opposed to flat like the in the original pic.  I plan on leaving the frame exposed as much as possible, I like that look better then covering the frame. 

Right now I'm wavering between building a rear cowl off the existing fender brace, sort of like this...
 

or, removing the fender brace and running a flat seat with a fender similar to this...


I'll be mocking up both options this week, if time allows and the fender arrives http://www.lowbrowcustoms.com/p2113/buy/m-c-parts/fenders/cycle-standard--6-quot-wide-steel-flat-trailer-fender/.  I'll trim it just past the seat to mount the taillight and plate.  If I go with the rear cowl, I'll cut it at the end of the frame or so.  The front fender will be trimmed as well, but still functional and balanced with the same length in front and in back of the fork.

If I go with option 2, which is most likely, I wont weld on a loop.  I want to maintain the integrity of the original frame as much as possible should anyone want to convert it back to stock.  [Which will be when I'm dead and buried, I doubt I would ever sell it.]
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