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Author Topic: Nighthawk Bobber - CB550sc  (Read 13474 times)

Offline Maritime

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Re: Nighthawk Bobber - CB550sc
« Reply #30 on: Apr 30, 2012, 08:53:42 »
You may be able to adapt a CV joint boot from a small car like a civic or something.  LOoks great so far.

Cheers

Maritime
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline ProSimex

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Re: Nighthawk Bobber - CB550sc
« Reply #31 on: Apr 30, 2012, 10:18:26 »
I think that could be figured out.
"Love is the feelin you get when you like something as much as your motorcycle."

"That's got CV's? Take a #2 phillips screwdriver, heat the tip with a torch until cherry red and plunge it into your eye. It will hurt less. Really."- Kopcicle

Offline clem

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Re: Nighthawk Bobber - CB550sc
« Reply #32 on: May 03, 2012, 14:11:53 »
This is how the shaft fits into the hub. The frame plate that it mounts to covers some of it but a little of the hub gear is still exposed. Maybe some type of boot will work to keep debris out.


This is where the engine is now. I am going to try and drop off my cylinder to the block shop again today. The guy says the job should take longer than a week but less than a month. Funny stuff right?



I bought a CB160 speedo and headlight bucket so I am going through it to clean it up and hopefully get a new faceplate decal for it. This bike will be the culmination of various years of Honda parts that I dig, it's unfortunate the only thing that I liked about the bike before was the engine minus the shaft drive.
"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline clem

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Re: Nighthawk Bobber - CB550sc
« Reply #33 on: May 05, 2012, 13:53:05 »
Well, I dropped the pistons and cylinders off and the outcome looks expensive. If I need to punch out all of the sleeves, it'd be about $800. There aren't any drop in replacement sleeves available so the will have to be made. Option two is to get custom pistons made and overbore all 4 cylinders to fit newer rings so that they are readily available. The bore is 60mm right now so it may go up to 61mm to fit 750 rings. It should have enough meat to go that far with it.
"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline ProSimex

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Re: Nighthawk Bobber - CB550sc
« Reply #34 on: May 06, 2012, 11:34:47 »
have you tried sourcing new jugs?
"Love is the feelin you get when you like something as much as your motorcycle."

"That's got CV's? Take a #2 phillips screwdriver, heat the tip with a torch until cherry red and plunge it into your eye. It will hurt less. Really."- Kopcicle

Offline clem

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Re: Nighthawk Bobber - CB550sc
« Reply #35 on: May 06, 2012, 21:07:03 »
have you tried sourcing new jugs?
I did find some on ebay but it would be taking a chance that i would find something better than I have. And to think that I only had 14,000 miles on this bike. Being that they only made this bike for one year in the us, I doubt there would be a NOS cylinder out there. I do kind of like the idea of a bigger bore, it's 572cc right now. The thing to do would have been to swap the cylinder for the 650. It has he same bore with a longer stroke but by the time I thought about it,I had already put the cases back together and didn't feel like splitting them to change the rods and chain.
"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline 7aliveatlast7

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Re: Nighthawk Bobber - CB550sc
« Reply #36 on: Dec 13, 2014, 23:31:16 »
how did you chip your rim?  just curious cuz i recently powdercoated my rims and will be putting tires on at some point soon.

Offline clem

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Re: Nighthawk Bobber - CB550sc
« Reply #37 on: Dec 24, 2014, 16:20:45 »
how did you chip your rim?  just curious cuz i recently powdercoated my rims and will be putting tires on at some point soon.
It chipped while putting the tire on. It was a poor powder coat job. I had them redone by another and had no problems.
"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline HURCO550

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Re: Nighthawk Bobber - CB550sc
« Reply #38 on: Oct 25, 2016, 15:00:07 »
did you ever finish this thing?
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
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