SOHC.co.uk Forums > CB350/400
My New Project arrives after a 44 year wait!
Johnny4428:
Interesting to see your stuff done at the copper plate stage Dave.
Laverda Dave:
--- Quote from: Johnny4428 on February 01, 2024, 09:40:37 AM ---Interesting to see your stuff done at the copper plate stage Dave.
--- End quote ---
When I was there dropping everything off Johnny they told me they leave the items for 16 hours in the cooper bath. I used to think it was a matter of minutes.
I don't know why but seeing those parts with all that copper reminds me of when I was a kid and we used to have our family holiday in Worthing (every single year for 10 years). There used to be a public toilet and the caretaker was always polishing the copper pipes and brassware, it used to gleam.
Maybe though I should learn to get out more into the workshop instead of reminiscing about public toilets ::)
Johnny4428:
--- Quote from: Laverda Dave on February 01, 2024, 10:56:09 AM ---
--- Quote from: Johnny4428 on February 01, 2024, 09:40:37 AM ---Interesting to see your stuff done at the copper plate stage Dave.
--- End quote ---
When I was there dropping everything off Johnny they told me they leave the items for 16 hours in the cooper bath. I used to think it was a matter of minutes.
I don't know why but seeing those parts with all that copper reminds me of when I was a kid and we used to have our family holiday in Worthing (every single year for 10 years). There used to be a public toilet and the caretaker was always polishing the copper pipes and brassware, it used to gleam.
😂😂 pride in your job! In the days when public toilets were looked after now they are just vandalised and closed.
Maybe though I should learn to get out more into the workshop instead of reminiscing about public toilets ::)
--- End quote ---
Laverda Dave:
Some positive progress to report.
The carb bodies are now assembled as far as I can go. 4 washes in the ultrasonic bath, a can of carb cleaner, a new viton o-ring kit from Julie, new hoses, top gaskets, yellow passivate linkages (or hardware as they say in the US) and some new float pivots made from 1.9mm brass rod has, I hope, given me a set of decent refurbished carbs. I will mount them on the carb rail when I get it back from vapour blasting next week and will fit the new stainless spindle from the workshop of Max.
The new viton clutch cush drive bought from Max has also been fitted. I found the best way to fit them in the end was to liberally coat them with red rubber grease and fit them onto the oval shaped spigots. I then gently tapped the ring gear over them, the rubber grease allowed the gear to slide over them very smoothly. The whole assembly was done up using s/s csk bolts supplied with the kit and these were coated in green loctite and the ends of the threads were staked. Hopefully they will not come undone any time soon!
I collected the chrome from Ashford Platers in Crayford last week and they have done an outstanding job, chrome so deep you could shave (or even swim) in it. Anyone who remembers the rear mudguard with the two PO cut thrupenny bit holes in it for a tombstone rear light will be hard pushed to find any evidence of them. The blacksmith who filled the holes was a true artisan and the chrome really shows it all off. I can 100% recommend Ashford Chrome although they are really expensive you get what you pay for. As the saying goes ‘If you think a professional is expensive wait until you employ an amateur!’ Turnaround time was a very impressive five weeks. I dealt with a true gent called Bishop and he sent me regular video updates of the parts progressing through the process (that’s his reflection in the photos).
I’ve had an old non-working CB400/4 horn in my spares bin for at least 15 years. I read up on Ash’s anatomy of a horn in his Aladdin’s cave and thought I had nothing to lose so gave it a go. Getting the crimp undone was the worst part but once it was apart I could see it the contacts that were rusty. A bit of judicious cleaning with some wet and dry and it was working! Getting the crimp back on was even harder than taking it off as there is so little metal to play with. I would have liked to have got the completed horn zinc plated but I thought better of it as the crimping would probably leak and the horn would have been destroyed so I used a can of alloy/zinc paint from Lidl to paint it. Not original I know but considering the horn is fitted with a black plastic cover I am not worried.
I collect the vapour blasting next week and can finally get on with some assembly.
All this activity will likely result in a nose bleed!
AshimotoK0:
Great progress Dave.
Your carb inlet rubbers are lovely and soft now (took four 8 hour dunks in the magic brew in the end to get the correct pliability) and the coils are ready .... except waiting for the 3mm ID black woven glass sleeve to arrive, as I decided to replace your LT cables as well.
Funnily enough I was just about to dig out a 400F / G5 horn out to refurbish. I am going to have a go at plating the parts with suitable masking and then re-crimp. Very difficult item to re-crimp though as you say.
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