Author Topic: project 71 cb750 with 330 wheel convertion  (Read 53784 times)

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Offline Syscrush

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Re: my husbands project 71 cb750 with 330 wheel
« Reply #150 on: January 25, 2010, 07:36:23 PM »
No, there is loss of power in the difference of angle that the tensioner makes between the jack shaft and the wheel sprocket.  It's not as severe as the drawing suggests, and friction is minimal at best because the tensioner is either greased or has a bearing.  But the pull is being applied to the tensioner, not the wheel sprocket.  The proof of what I'm saying is the fact that if the tensioner arm didn't have a solid hold on the other end, it would be forced down.  And I'm not so sure how solid it really is.
If the tensioner is held in place such that it does not deflect, then the only power loss will be due to friction, which as you note should be minimal.
Life is precious: wear your f'n helmet!
There's nothing more expensive than a free bike...
FWIW, I'm not a shill for Race Tech - I've just got a thing for good suspension and the RTCE's are the most cost-effective mod for these old damping rod front ends.

Offline 754

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Re: project 71 cb750 with 330 wheel convertion
« Reply #151 on: January 25, 2010, 07:50:01 PM »
This thread, is missing like 8 pages.. :o   :o   :o

 Where are they.. ???

 Let me guess, they are on the way to Daytona... ;)
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Offline ohiocaferacer

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Re: project 71 cb750 with 330 wheel convertion
« Reply #152 on: January 26, 2010, 05:54:00 AM »
LOOKS GOOD!

Offline edbikerii

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Re: project 71 cb750 with 330 wheel convertion
« Reply #153 on: February 11, 2010, 06:48:03 PM »
Purdy.  How's the ground clearance with those pipes sticking out on the side like that?

here is the bike so far.
SOHC4 #289
1977 CB550K - SOLD
1997 YAMAHA XJ600S - SOLD
1986 GL1200I - SOLD
2004 BMW R1150R

Jetting: http://forums.sohc4.net/index.php?topic=20869.msg258435#msg258435
Needles:  http://forums.sohc4.net/index.php?topic=20869.msg253711#msg253711

Offline Zaipai

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Re: project 71 cb750 with 330 wheel convertion
« Reply #154 on: February 11, 2010, 07:34:01 PM »
Good work Bam.. any plans on paint? Once your done and happy with it, brake out the video camera and lets see it in action.. I would love to hear that with those pipes..

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Offline Terry in Australia

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Re: project 71 cb750 with 330 wheel convertion
« Reply #155 on: February 11, 2010, 08:53:01 PM »
That things been photo-shopped, its a FAKE! Ha ha, just kidding, looks good mate, I hope you get it done right so you can stick it right up all the folk here who attacked your credibility before the mods stepped in............. eventually. :-\ ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Joksa

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Re: project 71 cb750 with 330 wheel convertion
« Reply #156 on: February 12, 2010, 10:53:27 PM »
Either there is only one pivot point, or the pivots are concentric.

Isn't it quite obvious there's only one pivot point and the jack shaft is not the one. What comes to the idler sprocket, increasing both "tertiary drive" sprocket size would eliminate the need such thing and the result would be simpler and cleaner.

Offline Frankenkit

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Re: project 71 cb750 with 330 wheel convertion
« Reply #157 on: February 12, 2010, 11:32:02 PM »
SWEET machine! Did you get it to Daytona? (or isn't Daytona here yet?) Any vids of riding it?
"Moderation in all things - especially moderation. Too much moderation is excessive. The occasional excess is all part of living the moderate life."
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Offline Industrial Cafe

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Re: project 71 cb750 with 330 wheel convertion
« Reply #158 on: February 13, 2010, 06:44:45 AM »
Wow that's sooo cool!
I wish my bike was that awesome.
 You must be a master fabricator, can you give me some details on how you made that rear end work? 
Hey Bam, check out this link www.yzzerdd.com

 
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Achmed

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Re: project 71 cb750 with 330 wheel convertion
« Reply #159 on: February 13, 2010, 08:48:05 AM »
Passenger seat looks a bit sticky.

Offline Syscrush

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Re: project 71 cb750 with 330 wheel convertion
« Reply #160 on: January 31, 2011, 12:49:17 PM »
I miss this thread.  :)
Life is precious: wear your f'n helmet!
There's nothing more expensive than a free bike...
FWIW, I'm not a shill for Race Tech - I've just got a thing for good suspension and the RTCE's are the most cost-effective mod for these old damping rod front ends.

Offline Terry in Australia

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Re: project 71 cb750 with 330 wheel convertion
« Reply #161 on: February 03, 2011, 05:38:37 AM »
This whole thread's been photo-shopped! ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Bakeoff

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Re: project 71 cb750 with 330 wheel convertion
« Reply #162 on: February 03, 2011, 10:07:22 AM »
I can't believe how so many people jumped to conclusions instead of waiting for more info.  If your wives nagged that much, you'd flip #$%*.  Take a lesson from yourself and chill the #$%* out!

As for the bike itself, its giving me ideas for a 500 four in my garage...

Offline Syscrush

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Re: project 71 cb750 with 330 wheel convertion
« Reply #163 on: February 03, 2011, 11:34:40 AM »
It would appear that the bike was mocked up, never run/ridden, parked at Daytona and photographed with a bunch of fat drunk whores in chaps sitting on it.

I've gotta say, I've put plenty of effort into projects that were MUCH less worthwhile.  ;D
Life is precious: wear your f'n helmet!
There's nothing more expensive than a free bike...
FWIW, I'm not a shill for Race Tech - I've just got a thing for good suspension and the RTCE's are the most cost-effective mod for these old damping rod front ends.

Offline Grnrngr

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Re: project 71 cb750 with 330 wheel convertion
« Reply #164 on: February 03, 2011, 12:47:26 PM »
I can't believe how so many people jumped to conclusions instead of waiting for more info.  If your wives nagged that much, you'd flip #$%*.  Take a lesson from yourself and chill the #$%* out!

As for the bike itself, its giving me ideas for a 500 four in my garage...

Heh...and you didn't get to see the 8 missing pages.....
'72 CB750-K2 "PopCycle"
'73 CB750-K2 "Barney"
'77 CB750A   
'83 Virago 500 (red)
'83 Virago 500 (black)

"and so on and so on and scoobydoobydooby..oooooooshasha"  Sly Stone

Offline Terry in Australia

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Re: project 71 cb750 with 330 wheel convertion
« Reply #165 on: February 03, 2011, 03:01:11 PM »
It would appear that the bike was mocked up, never run/ridden, parked at Daytona and photographed with a bunch of fat drunk whores in chaps sitting on it.

Were there any pics of said fat drunk whores in chaps mate? Mmmmmmnnn, fat drunk whores in chaps.............. (where's that "Uncle Pervy" emoticon when I need it?)  ;D

As for the bike itself, its giving me ideas for a 500 four in my garage...

I don't think a 500/4 engine could turn a wheel that big mate.  ;)
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Syscrush

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Re: project 71 cb750 with 330 wheel convertion
« Reply #166 on: February 03, 2011, 03:25:42 PM »
Were there any pics of said fat drunk whores in chaps mate? Mmmmmmnnn, fat drunk whores in chaps.............. (where's that "Uncle Pervy" emoticon when I need it?)  ;D









Not all fat, not all whores.  Some cuties in there, too - and also some douchebags:


You're welcome.  ;D
Life is precious: wear your f'n helmet!
There's nothing more expensive than a free bike...
FWIW, I'm not a shill for Race Tech - I've just got a thing for good suspension and the RTCE's are the most cost-effective mod for these old damping rod front ends.

Offline Retro Rocket

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Re: project 71 cb750 with 330 wheel convertion
« Reply #167 on: February 03, 2011, 03:30:33 PM »
I get it now, he put that tyre on there to make their butts look smaller...... ;D

Mick
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Offline Terry in Australia

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Re: project 71 cb750 with 330 wheel convertion
« Reply #168 on: February 03, 2011, 04:15:24 PM »
I'd give 'em one Mick, but then again, I like Harley's.............  ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Retro Rocket

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Re: project 71 cb750 with 330 wheel convertion
« Reply #169 on: February 03, 2011, 04:28:13 PM »
I'd give 'em one Mick, but then again, I like Harley's.............  ;D

Your taller than me Terry, they look huge from down here..... ;D

Mick
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Terry in Australia

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Re: project 71 cb750 with 330 wheel convertion
« Reply #170 on: February 03, 2011, 04:36:01 PM »
Ha ha, I got nothing to add Mick, but that was funny! ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Hasenkopf

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Re: project 71 cb750 with 330 wheel convertion
« Reply #171 on: February 03, 2011, 06:41:56 PM »
wasn't this over and done with, like...... a year ago???
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Offline Stev-o

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Re: project 71 cb750 with 330 wheel convertion
« Reply #172 on: February 03, 2011, 07:55:28 PM »
wasn't this over and done with, like...... a year ago???

Ya, but it's a slow day and we miss it!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stev-o

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Re: project 71 cb750 with 330 wheel convertion
« Reply #173 on: May 12, 2012, 09:04:35 AM »
wasn't this over and done with, like...... a year ago???

Ya, but it's a slow day and we miss it!

Feeling lucky!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Terry in Australia

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Re: project 71 cb750 with 330 wheel convertion
« Reply #174 on: May 13, 2012, 03:36:19 AM »
I just realised that the shiny mark on the centre of the tire was caused by it rubbing on the frame, probably when he rolled it off his trailer? Cheers, Terry. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)