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Author Topic: Stock counter sprocket on a 1973 CB350F?  (Read 1332 times)

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Offline Sniper X

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Stock counter sprocket on a 1973 CB350F?
« on: July 02, 2012, 08:09:48 AM »
I have a feeling my 350F has at least a 1 or 2 tooth smaller counter on it because of the way it runs. It has more bottom end than I expected, and it is more well, excited sounding when I am at or near freeway speed or 65mph. It is only running about 4500 or so RPM when at 55 so is this normal or shouldn't it be at about 4500~5500 at 65 or 70mph? I am going from memory so will have to actually note the rpm at speed thing but this is close. I know it doesn't redline till 10k and I did do 90mph on it last night so it is fast.
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1973 CB350 Four, 1969 CL350 Scrambler (2) 1985 BMW R80RT.

Offline tortelvis

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Re: Stock counter sprocket on a 1973 CB350F?
« Reply #1 on: July 02, 2012, 08:36:02 AM »
Stock is a 17 tooth front sprocket, 23801-333-000
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Offline Sniper X

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Re: Stock counter sprocket on a 1973 CB350F?
« Reply #2 on: July 02, 2012, 03:42:20 PM »
Then I am betting my front is like a 15 or so. I'll have to look. thanks.
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1973 CB350 Four, 1969 CL350 Scrambler (2) 1985 BMW R80RT.

Offline fmctm1sw

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Re: Stock counter sprocket on a 1973 CB350F?
« Reply #3 on: July 02, 2012, 04:18:35 PM »
RPM should be 10mph per 1000 RPM in top gear (with stock gearing).

http://www.gearingcommander.com/
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1973 CB350F
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1973 CB750K3 (http://forums.sohc4.net/index.php?topic=92888.0)
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Offline socalenduro

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Re: Stock counter sprocket on a 1973 CB350F?
« Reply #4 on: July 03, 2012, 10:01:00 AM »
i like hearing this, because i want to drop a tooth or two in the front for exactly that reason.
do you mind counting yours and reporting back?
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Offline Sniper X

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Re: Stock counter sprocket on a 1973 CB350F?
« Reply #5 on: July 03, 2012, 12:17:10 PM »
Not at all! I'll do it tonight and report. Another 10mph and 1K drop is perfect! Right now, it just feels a tad buzzy at exactly 65mph so if it dropped K that would be it's sweet spot!
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1973 CB350 Four, 1969 CL350 Scrambler (2) 1985 BMW R80RT.

Offline flybox1

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Re: Stock counter sprocket on a 1973 CB350F?
« Reply #6 on: July 03, 2012, 12:45:54 PM »
sweet spot for this industrial strength sewing maching motor is in the neighborhood of 5000-8000k....its gonna feel 'buzzy'  :P
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

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Offline Sniper X

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Re: Stock counter sprocket on a 1973 CB350F?
« Reply #7 on: July 03, 2012, 12:57:55 PM »
Mine is perfectly smooth at 55 so if I gained 10mph at that rpm I would be well chuffed!
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1973 CB350 Four, 1969 CL350 Scrambler (2) 1985 BMW R80RT.
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