Author Topic: CB500/4 Rear sprocket carrier  (Read 298 times)

Offline flatfour

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CB500/4 Rear sprocket carrier
« on: August 12, 2017, 06:25:23 PM »
Does anyone have a CB500/4 rear sprocket carrier that they would sell? Mine has developed movement that fitting a new retaining ring hasn't cured (the retaining ring bottoms out just before it contacts the sprocket carrier firmly, so changing the carrier is the next step).

The Honda part No. is 42610323000 and it is described on the CMSNL Website as "Flange, Final".

Any help is much appreciated.

Offline Trigger

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Re: CB500/4 Rear sprocket carrier
« Reply #1 on: August 12, 2017, 06:38:01 PM »
Not a easy part to find, just replace one and looking into repair these at the moment, as have a few that are in a bad state.

Offline matthewmosse

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Re: CB500/4 Rear sprocket carrier
« Reply #2 on: August 12, 2017, 08:56:19 PM »
Odd, I've not seen one with wear myself. I'll take a look in the shed sometime, see what surfaces. Sounds like a nice little lathe job, though none of mine has ever needed to come apart.
Got a 500/4 with rust and a sidecar and loadsa bits. nice and original and been round the clock

Offline flatfour

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Re: CB500/4 Rear sprocket carrier
« Reply #3 on: August 13, 2017, 09:07:05 AM »
Many thanks for the advice, Trigger if you do decide to offer repairs then please put me on the list! Matthewmosse, if you find one in the shed that you would part with, please mark me down for it.

Meantime I'll go back to the e-Bay searches. The bike doesn't seem to be affected in any way by the movement that is there, so I'll keep using it whilst I look.

One of the things that I have considered is having a couple of millimetres machined from the bottom of the retaining ring so that it sits lower and contacts the sprocket carrier earlier. If I have this done, I'll post an update on its success or otherwise.

Offline flatfour

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Re: CB500/4 Rear sprocket carrier
« Reply #4 on: August 14, 2017, 07:54:48 PM »
I've ordered a new sprocket carrier, side plate, oil seal and "O" rings from CMS this morning. Shipping date is 28th August.

Hopefully this will solve the problem!

Offline Seabeowner

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Re: CB500/4 Rear sprocket carrier
« Reply #5 on: August 17, 2017, 09:54:32 AM »
That's quite some investment flatfour. I thought it was the rubber absorbers at first on mine, but Delta is an expert on this problem there was a thread on the US site.
http://forums.sohc4.net/index.php?topic=150358.0
Phil
1971  CB500K0
1973  CB500K1
1975  CB550F1
1978  CB550K

Offline flatfour

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Re: CB500/4 Rear sprocket carrier
« Reply #6 on: August 17, 2017, 10:44:43 AM »
It's around £300.00 delivered to the door, the more important thing though is that the part is available. Having found the problem and now knowing where it lies, I have to sort it out as I won't enjoy riding the bike otherwise, that's just how I am!

I have noticed that CMSNL now show only four left before stock is exhausted.

Offline Oddjob

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Re: CB500/4 Rear sprocket carrier
« Reply #7 on: August 18, 2017, 09:53:29 PM »
I'd forgotten I'd advised on Deltas thread, in fact that's the later thread, the earlier one was where he was trying to find out what had gone wrong, it's amazing how many don't know the flange should be greased and it's no wonder these days that they are showing signs of wear because of that omission.

Don't forget the grease FlatFour :)
Don't play stupid with me, I'm better at it

Offline flatfour

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Re: CB500/4 Rear sprocket carrier
« Reply #8 on: August 19, 2017, 09:52:20 AM »
I'll be sure to grease it all well on assembly.

Many thanks for the advice!