Honda-SOHC

SOHC.co.uk Forums => Anorak's Corner => Topic started by: AshimotoK0 on June 04, 2024, 11:20:57 PM

Title: Gear Lever Linkage Rose Joint possible alternative CB250RSA also 400/4 etc
Post by: AshimotoK0 on June 04, 2024, 11:20:57 PM
My 1980 CB250 RSA gear change linkage 'rose' joints were completely fooked and I am restoring this bike on a budget (albeit one which already totals to probably considerably more than it's worth ..but hey ho.  ::)

Anyway I bought the parts below ... the cheapo rose joints were far to big so I chopped them to the correct length and trimmed down the diameter and profile of the round bit to be the same size as the Honda originals. I still need to tidy up the profile a bit  and also zinc plate them ... I am thinking of two thin O-rings and a bolt and nut through the eyelet to seal the joint before plating. This is deffo one for home plating as I don't know of any commercial platers, who would entertain doing it.

The replacement boots look fairly decent and didn't tear on my test-out assembly, to ascertain if they are rubbish or not. Obviously, I will have to use a fixing for the normally peened over pin used on the lever parts but that's no big deal.

Joint before modification.

[attachimg=1]

Joint after modification and replacement rubber boot.

[attachimg=2]

Test assembled with Rubber boot
 
[attachimg=3]

CB250RSA Boot Kit

[attachimg=4]

Rose Joints on Ebay (L&R hand thread m6)

[attachimg=5]
Title: Re: Gear Lever Linkage Rose Joint possible alternative CB250RSA also 400/4 etc
Post by: AshimotoK0 on June 04, 2024, 11:22:25 PM

Honda CB250RSA original gear lever linkage setup (1980 model)


[attachimg=1]
Title: Re: Gear Lever Linkage Rose Joint possible alternative CB250RSA also 400/4 etc
Post by: Laverda Dave on June 05, 2024, 05:39:49 PM
Good to see some progress Ash.
How many miles were on that gear lever assembly as a matter of interest?
Title: Re: Gear Lever Linkage Rose Joint possible alternative CB250RSA also 400/4 etc
Post by: AshimotoK0 on June 05, 2024, 06:28:18 PM
Good to see some progress Ash.
How many miles were on that gear lever assembly as a matter of interest?

50k
Title: Re: Gear Lever Linkage Rose Joint possible alternative CB250RSA also 400/4 etc
Post by: Laverda Dave on June 05, 2024, 06:51:03 PM
That's pretty good milage really for that joint.
Title: Re: Gear Lever Linkage Rose Joint possible alternative CB250RSA also 400/4 etc
Post by: Athame57 on June 05, 2024, 08:17:49 PM
That's pretty good milage really for that joint.
I got 77,000 miles out of one of my CB250 RS's , never had any trouble with the gear linkage.  ;D It was split kick start joints that I had a lot of trouble with.  ::)
Title: Re: Gear Lever Linkage Rose Joint possible alternative CB250RSA also 400/4 etc
Post by: AshimotoK0 on June 06, 2024, 09:40:46 AM
That's pretty good milage really for that joint.
I got 77,000 miles out of one of my CB250 RS's , never had any trouble with the gear linkage.  ;D It was split kick start joints that I had a lot of trouble with.  ::)

Were you a courier? Lot of miles that.

A lot of love for the RSA ... seem to be gaining popularity recently ... maybe it's 'cos I got one  ;D ;D
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