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Teds new project a CB500 K1 mostly version 0.5 circa 1972.
K2-K6:
Good result Ted, testament to your persistence, enquiring outlook and time given to complete.
My complements of your documentation of it here too, makes for interesting forum contribution with in depth look at many facets in going through this build.
McCabe-Thiele (Ted):
Well after having the 500 running a few times firing on all four cylinders it did not want to start yesterday when I was going to set the dynamic timing. Within seconds of trying to start her up petrol started to leak from number 1 carb overflow.
A quick investigation revealed that the petrol pipe on my temporary tank was weeping (just pushed on) it seemed to be soft and sticky on the outside after the inline filter and inline tap. I drained the temporary tank and removed the piping that it came with - all horible and shedding little black bits into the carbs for sure.
I binned all the 'free piping' that came with the small platic tank including the top cap seal that was falling to bits. I made up another set of pipework using some old pipe that came off the 500 carbs.
This morning it fired up again but number 1 cylinder was luke warm so it looks as if there is now crap from the piping that has blocked up something in number 1 carb. Dam & blast it - whilst looking at the petrol pipe to the carbs that came from Planet Silicicone it feels very soft and I had to put a clip on the T piece supply to stop it weeping. The carb end is okay as I fitted spring clips when assembling the carbs.
I'm thinking the carbs will now need to come off to ensure there are no more black bits swilling around in the carb bowls, jets etc, it seems unlikely that just number one bowl has crap in it.
I'm not happy with the feel of the carb feed pipework either now it was (5.4mm i.d.) item 130740225601 on ebay. The DS stuff is over £20 a meter and is 5.5 mm i.d.
When I phoned DS the bloke on the phone did not know the o.d. that they sell.
DS part number is 95001-550-0160M. My old carb pipework was reinforced in the wall of the tubing.
Anyone here used the DS pipework/is it re-inforced?
I've found this am wondering if it's okay as its 5.5 mm i.d like the DS one at 5.5 mm i.d.?
https://www.ebay.co.uk/itm/392633507630
Bryanj:
The pipes originaly on those carbs Ted was fitted by Gerben and was NOT the correct pipe mate but worked so i left it
McCabe-Thiele (Ted):
--- Quote from: Bryanj on June 04, 2024, 04:50:40 PM ---The pipes originaly on those carbs Ted was fitted by Gerben and was NOT the correct pipe mate but worked so i left it
--- End quote ---
Unfortunately I used those today on my temporary tank arrangement.
Can you recommend a supplier, was the original Honda pipework 5.4 mm orr 5.5 mm i.d Bryan?
Laverdaroo:
Ted, just tap 5.5mm ID FURL LINE into Google or eBay, thanks come up mate
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