SOHC.co.uk Forums > CB350/400
My New Project arrives after a 44 year wait!
AshimotoK0:
--- Quote from: McCabe-Thiele (Ted) on March 05, 2024, 09:59:51 AM ---No one seems to have responded to your question about the brake pivot bar thing you are missing.
I can't check my old master cylinder as I gave it to Simon who has since sold his 500.
Bryan might know the answer in the absence of Ken.
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If he means the plate that holds in the rubber rebound tube .. I have a used spare one Dave that you can have.
Or if you want a brand spanking new one https://www.davidsilverspares.co.uk/parts/by-part-number/partnumber_45527300000/
The rubber tube replaced the threaded bar with a flat on it and M6 nut that was fitted to the earliest CB750 master cylinders that acted as an adjustable stop.
Laverda Dave:
--- Quote from: AshimotoK0 on March 05, 2024, 08:38:05 AM ---Those carbs are amazing Dave. Plus you correctly yellow chromate passivated the parts .... unlike a lot of the pro carb 'restorers'. A lot of people argue that they were BZP originally but I have seen a NOS set of 400 carbs in their original Honda box and they were definitely yellow passivated. Problem is that components and memories fade :)
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Thanks for all the positive feedback everyone. It is a nice feeling actually putting things back together instead of taking them apart and finding something else that is worn out or broken!
Ash, I remember a discussion about the carb hardware and the correct finish about a year ago as I found the back of one of the blanking plates still had its yellow passivate finish. I also remember the 'push only' 400/4 at the Silverstone auction having the same finish on all the hardware (I think that is the same bike in your photo as it is a yellow one and you can see just how fast it is standing still ;)). The rear brake lever pivot also has yellow passivate finish so I got this done at the same time. I got the new carb felts from Ken and they fitted perfectly.
The brake lever pivot/plate thing ('thing' being a technical term I use to describe something of unknown origin that I know nothing about), yes that's it. What does it actually do? It isn't sprung, it isn't a switch and it is bolted to the brake lever casting? I also notice it has some kind of bush that goes into a hole in the brake lever casting, what is the bush for? I know the old saying that Honda wouldn't fit anything if they could help it in order to save some cash but I am at a loss trying to think what this part actually does? I cannot find a description anywhere. If you have a spare one can I have it please Ash as it obviously serves a purpose for something brake related?
Dave
Laverda Dave:
Ahh, I've just re-read your post Ash. It's a rebound bar, hmm...... I still dont understand its exact purpose, was it an early form of adjustable lever reach?
Bryanj:
Should be rubber forthe lever to bounce against
Laverda Dave:
--- Quote from: Bryanj on March 05, 2024, 11:55:21 AM ---Should be rubber forthe lever to bounce against
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So in effect a 'soft stop' Bryan to prevent a hard metal to metal contact between the lever and body?
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