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1981 CB750C

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LikeItFast

1981 CB750C

Just purchased my first bike!!! It's not perfect but I'm a pretty handy guy so I'll get it figured out.

Hondoo

Re: 1981 CB750C

great looking ride. any mod plans you're planning for it?

LikeItFast

Re: 1981 CB750C

Sorry for the late reply. Been really busy lately.

I wanna go cafe style with it. I looked for a while before I found this bike, but I'm beginning to regret buying someone else's project. I've had to redo alot of wiring at this point just to get lights working. My charging system still isn't working. That being said even with a fresh charge on the battery it's still running crappy. Really feels like it's lacking power. I'm struggling to maintain 55mph. Every once in a while it will jump a little like it wants to go faster and the sound of the engine will change but then it just settles back where it was. Carbs are good and the vacuum leaks I had are fixed. I've read that the charging system has alot to do with acceleration past 5000rpm but would that affect low rev power too.

TOOLS1

Re: 1981 CB750C

Administrator

If the battery is drained it will.
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Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
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"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

LikeItFast

Re: 1981 CB750C

Well that's one of the things I'm wondering cuz with a fresh charge on the battery its making like 13 volts. It revs just fine in neutral up to around 5000rpm, but when I start riding it seems real sluggish. I can open the throttle all the way from around 2000 rpm and I get a deeper sound but very little change in acceleration compared to 1/4 throttle.

TOOLS1

Re: 1981 CB750C

Administrator

That is the symptom of a lea condition. Check your carbs and fuel system again.
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Truck

Re: 1981 CB750C

If you still have those pods on that is part of your problem.

It's only illegal if you get caught.

If at first you don't succeed, use more lighter fluid

95% of Harley Davidsons ever made are still on the road... The other 5% made it home.

New Baltimore, Va '82 CB900c, 1980 CB985F/K 'Mutt"

TOOLS1

Re: 1981 CB750C

Administrator

I never even noticed that, good catch Truck. I have never see pods work correctly on those CV carbs.
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