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1
CB500/550 / Re: 1975 CB500K1 crank rotation resistance
« Last post by McCabe-Thiele (Ted) on Today at 10:53:41 AM »
Does the crank have that free movement feel if you make a very small rocking action with the crank?

Do you have any doubts that the crankcase halves were a factory pair?
2
CB500/550 / 1975 CB500K1 crank rotation resistance
« Last post by martin_uk on Today at 10:10:56 AM »
Im in the process of reassembling the engine on my 75 CB500K1 basket case that came already stripped.

Crankshaft checked for wear which was minor and well within spec.

Minor marks to crank main shells on 1 and 5 but replaced with new genuine Honda Green shells in line with calculations of housing and journal.

Checked with Plastiguage and all mains came out at 2 thou.

Reassembled with top case down and inserting primary shaft after cases together.

Bearings well oiled and fitted evenly.

Cases closed up easily with light taps with rubber mallet and gradually torqued up as per recommended order but on final torque crank becomes more difficult to turn.

It turns with a spanner on the alternator bolt but feels tighter to turn than I would expect.

I have rebuilt 3 CB750 enfines without this issue.

I have just checked and force required to turn crank is 9 lb ft.

Removed primary shaft and does not change.

Would be interested to hear if any similar issues .

Thanks

Martin
3
Misc / Open / Re: Advice sought, modernish tourer needed
« Last post by florence on Today at 09:48:41 AM »
Quote from: andy120t on April 30, 2024, 07:29:06 AM
Did you ever find a tourer? I was idly surfing and saw TBR Motorcycles in Notts have both a VFR800 and a Sprint, both with hard luggage. Might be one you could compare if not too far away ( but aren't you in Somerset..!).. (Nb they advertise a Hornet for 2.5k but it's about 1.3k on eBay, so could have flexibility on pricing.

http://www.tbrmotorcycles.com/used-motorbikes-for-sale.htm

I have found a very low mileage Triumph Daytona but I need to sell my 500/4 to be able to afford it.  Luckily the owner is not in a hurry to sell.  Just need to raise 1500 and then good to go.  I've had my bike since 1995, I bought it for cheap motorcycle holidays, feel ready for a change.
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CB750 / Re: WTF Exhaust
« Last post by cbxman on Today at 09:39:29 AM »
I used their search. "exhaust" and found a 750 with crazy pipes on....
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Misc / Open / Re: All gone now 😢😢😢
« Last post by Nurse Julie on May 01, 2024, 08:00:01 PM »
Quote from: Laverda Dave on May 01, 2024, 07:50:12 PM
I thought you had sold that bike last year Julie?
No, I put it up for sale Dave last Septemberish, but then we decided to go away on holiday for a few weeks, so I removed the listing. By the time I thought about relisting it, it was late in the riding season so didn't bother.I finally got around to listing it again in mid April and it sold.
Edit.... Maybe you were thinking about the gold 750 K2 Dave, I sold that last summer and amended the ad to say 'Sold to Billy' 😁😁😁
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CB500/550 / Re: Float height 500 k1
« Last post by deltarider on May 01, 2024, 07:52:16 PM »
Any blockage in the air intake, like a forgotten cloth underneath the seat?
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Misc / Open / Re: All gone now 😢😢😢
« Last post by Laverda Dave on May 01, 2024, 07:50:12 PM »
I thought you had sold that bike last year Julie?
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CB350/400 / Re: Replacement bearing for transmission 20mm needle bearing 91022333018
« Last post by McCabe-Thiele (Ted) on May 01, 2024, 07:23:16 PM »
DS list it - comes with the outer section iirc.

.https://www.davidsilverspares.co.uk/parts/by-part-number/hpart_91022333018/

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Misc / Open / Re: long covid
« Last post by haynes66 on May 01, 2024, 07:10:37 PM »
i think it was more of a case of my gp running out of ideas
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CB350/400 / Replacement bearing for transmission 20mm needle bearing 91022333018
« Last post by Dolomite_ on May 01, 2024, 06:52:01 PM »
I've decided to replace all the bearings as the gear selector bearing is pretty rough and the engine is stripped so I may as well.

I can't quite find a bearing for part 91022333018. In the parts manual its bearing, needle, 20mm. On PDF page 25 (https://www.dropbox.com/s/7pieydvznvy7nhp/CB350_F_F1%20Full.pdf?e=7&dl=0) its showing as a bearing inside a metal cylinder, does the bearing come out and a new one slide in?

I know its 20mm but don't know the other measurements. Has anyone found a replacement?
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