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Topics - Doom64

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CB350/400 / Speedo Gauge rebuild but still wavy
« on: July 10, 2018, 08:45:06 PM »
Hello, I just received my clocks back from being rebuild, the internals were cleaned and the dampers refilled, also had new glass and faces fitted.
I put new cables on from David silver went for a ride and the speedo and Rev counter is still wavy.
The speedo is reading a bit high and when going quicker, say I am going 60 and I accelerate the speedo will shoot up quick and go to like 80 and go back down and wave about. (clutch is not slipping) it does this more at higher speeds, it seems a bit more stable at slower speeds.
And the Rev counter is wavy and it will fluctuate a lot doing about 6k it will drop down to 5k bounce about and go back to 6k and when going quick it doesn't go up smooth.
I had a look at the speedo gear were the cable slots in with the wheel on and it is a bit wobbly, is it meant to be?
Also put a drill on the end of the cable and the needles seemed to go up smooth.
Does anyone know what else could be causing this?
Spent quite a bit of money on these, they have been wavy for ages getting a bit annoyed with them now.

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CB350/400 / Cb400f primary chain noise after big bore kit install
« on: June 25, 2018, 09:34:27 PM »
Hello, I have just put a 466cc big bore kit in about 500 miles ago, the primary chain seems to be a lot noisier now for some reason.
When the standard pistons were in it it could tick over at 1200rpm and there would be a slight knock but nothing really loud, but now with the 466cc kit in when it ticks over at 1200rpm there Is a very loud clunking sound and when you bring it up to 1800rpm it quietens but you can still hear it.
Pretty sure it is the primary because when you put it in gear on the center stand and put the back break on it goes quite.
I have not touched the bottom end the only thing I did was take the sump off and wiggle the primary and the sprocket.
I have balanced the carbs but there was a couple of kinks in the hoses, so I will get some new ones and do it again.(although I used the same set when it had standard pistons and it was fine)
Does anyone have any idea as to why it would suddenly go loud when I haven't even done anything else apart from change the pistons?
Thanks in advance.

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