81 cb650 bobber

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scummydan
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Joined: Wed Jun 15, 2011 1:26 am

81 cb650 bobber

Postby scummydan » Wed Jun 15, 2011 1:40 am

Image

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Volker_P
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Joined: Mon Mar 06, 2006 1:53 am
Location: southern Germany

Re: 81 cb650 bobber

Postby Volker_P » Wed Jun 15, 2011 2:23 am

Welcome here! :D
Interesting bike in correct color!
Will it get a front brake? The rear brake tends to early blocking even on dry roads.
Would not like to imagine how to get this bike stopped on a bumpy, wet road, moreover with a hard tail.
Is the rear chain guard residual really just fixed with a single bolt? If yes, I would expect trouble with time.
Did you modify the stock Custom 4-4 or is this a completely different exhaust?
Cosky's great (free) online manual: http://cosky0.tripod.com

forum links to common technical issues

scummydan
Posts: 6
Joined: Wed Jun 15, 2011 1:26 am

Re: 81 cb650 bobber

Postby scummydan » Wed Jun 15, 2011 3:29 am

its a bit modified and the rear wheel i got rid of the drum and put in a disc it stops really well in dry conditions but yah im sliding all over the place and gearing down alot in the wet, its a summer bike though going with the traditional bobber look stripping most of the stock parts keeping it as simple and clean as possible, the cb650 is a great bike and makes for a wicked custom, for a 650 its fast nimble and an overall great bike no complaints. The one and only thing that bugs me is an oil leak comming from the bottom of the 1st cylinder head. I was told the cb650 has been known to do that from what i hear anyways. To come is full custom pipes and a peanut style sportster tank. any other thoughts or comments are welcome

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Volker_P
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Location: southern Germany

Re: 81 cb650 bobber

Postby Volker_P » Wed Jun 15, 2011 4:31 am

The head oil leak is quite typical, mostly caused by the O-rings. Nothing dramatic, just a bit a mess. If you like to care for it and try out something, you may have a look at the An idea for the head oil leak thread.

scummydan wrote:its a bit modified and the rear wheel i got rid of the drum and put in a disc it stops really well in dry conditions but yah im sliding all over the place and gearing down alot in the wet.
Now my view of the world is all right again. :lol:
Cosky's great (free) online manual: http://cosky0.tripod.com

forum links to common technical issues

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Ouch
Posts: 167
Joined: Wed Oct 27, 2010 8:28 am

Re: 81 cb650 bobber

Postby Ouch » Thu Jun 16, 2011 10:06 am

Great job...where did you get the bike b4 you choped it and for how much, how long did it take, give us some back ground basically on the bike?

Clutch
Posts: 32
Joined: Mon Jun 14, 2010 9:30 am

Re: 81 cb650 bobber

Postby Clutch » Thu Jun 16, 2011 2:21 pm

Nice Bobber like the rear fender looks cool..

bobbed650
Posts: 9
Joined: Wed May 25, 2011 1:53 pm

Re: 81 cb650 bobber

Postby bobbed650 » Fri Jun 17, 2011 7:58 am

Cool Idea, I like it. I am in the process of bobbing a 79 650 too. Could you post some more pcitures of the bike? I like the gas tank, looks like it came off a early-mid 80's enduro or woods bike. What kind of tires did you use?

scummydan
Posts: 6
Joined: Wed Jun 15, 2011 1:26 am

Re: 81 cb650 bobber

Postby scummydan » Fri Jun 17, 2011 11:36 pm

Image took this today at work

scummydan
Posts: 6
Joined: Wed Jun 15, 2011 1:26 am

Re: 81 cb650 bobber

Postby scummydan » Fri Jun 17, 2011 11:52 pm

even with my welding and fabrication background and being on 2 wheels since i was a kid i bought this almost as is i did some custom stuff like the bars and the seat myself since i picked it up a week ago. I do know the builder and what he did to make this custom come to life. It started out as fair shaped 81 cb650 picked up for pretty cheap. After that it was stripped of alot of its stock accessories the rear part of the from was cut with a new rigid hardtail welded in. The tank is off an old dirtbike (good call) although it will be getting a new sportster peanut style tank in the next week or so. This bike is a really cool well built tight little bobber with lots of cool little creative extras like a skateboard wheel chain roller and a hiddin ignition button on the side of the frame for ex.. I think this build sets itself apart from the usual popular cb650 and the yamaha xs 650 you see chopped and bobbed everywhere you look. The rear fender was picked up from a swap meet i have no idea what its actually off of, The springs on my seat are from a harley engine. witch i find kinda cool since its like my ass is being supported by a harley spring, thats the only job i would give a harley :P.... anyways hope everyone enjoys my bike i know i will

Clutch
Posts: 32
Joined: Mon Jun 14, 2010 9:30 am

Re: 81 cb650 bobber

Postby Clutch » Mon Jun 20, 2011 4:04 pm

any modifications to your electrical?

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bolo79
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Joined: Sun Aug 15, 2010 9:51 pm

Re: 81 cb650 bobber

Postby bolo79 » Mon Jun 20, 2011 10:31 pm

Hard and Low!Sweet!

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Volker_P
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Location: southern Germany

Re: 81 cb650 bobber

Postby Volker_P » Tue Jun 21, 2011 2:36 am

Guess you will collect lots of stones between the cylinders with that front tire thread and without fender.

Clutch wrote:any modifications to your electrical?

Looks like cut off everything but starter, ignition and headlight. Battery and RR seem behind engine.
Cosky's great (free) online manual: http://cosky0.tripod.com

forum links to common technical issues

scummydan
Posts: 6
Joined: Wed Jun 15, 2011 1:26 am

Re: 81 cb650 bobber

Postby scummydan » Mon Jul 04, 2011 11:54 pm

Image

NEW TANK

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Hotrodhalfton73
Posts: 3
Joined: Fri Mar 31, 2017 6:20 am

Re: 81 cb650 bobber

Postby Hotrodhalfton73 » Wed Jun 14, 2017 9:52 am

That looks really nice...Im not sure if my photo will go through, this is my 80 cb650c i got when he passed in 98, he bought in 81, ive now took an affection for it, seem I've customized everything ive ever owned since i got my 1st harley at 16 (now 44) i couldnt leave it almost stock. In last year i started chopping on it took a break an recently fabbed up a new hardtail back half (utilizing the swing arm) cut everything off it it didn't need, added sporty tank,bates headlight an old unused flat fender from an old project. I pulled the mufflers off the big 4 into 2 turnouts now it just looks like 2 into 1 header on each side. The expensive mod is the cost of replacing the OEM ign, ive seen the hei swap but ahhh i duno, i like simplicity of the dynatek system but its almost $500! But im getting more attached to it every day and can't wait to get it all finished and take it out for a spin!
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