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1
Out & About / Re: SOHC meet in Scotland
« Last post by taysidedragon on Today at 06:58:37 PM »
Quote from: Orcade-Ian on Today at 04:37:49 PM
Hi Gareth,
If all goes to plan I will be back in plenty of time from my little jaunt to Germany and Austria on the Forza, so should be able to use the 550 for the trip.  I think I might stay somewhere nearby for a night either side.  How long were you planning on staying after we've all got fed and watered?  I could probably stay at my Sister's place in Aberdeenshire and catch the Ferry home  the next day

Ian

Hi Ian,
I can stay all afternoon as required.  I'm less than 2hours from Crieff.

Gareth
2
CB350/400 / Re: Handlebar clamps
« Last post by Laverda Dave on Today at 06:43:41 PM »
Excellent, thanks Deanno👍
3
Misc / Open / long covid
« Last post by haynes66 on Today at 06:03:45 PM »
maybe this isnt the place to post this but it might be of use to someone.  i was diagnosed with long covid recently by my GP after chest xrays, cardio ecg, 24hr ecg and a number of asthma tests but nothing untoward showed up. but they did acknowledge that my breathing capacity was 50% what it should be. so i just accepted that i was stuck with it.  anyway, i mentioned it to a guy a few weeks ago who is very into alternative medicine and a vegan. so i was naturally sceptical!  apparently, his friend had long covid and after some research, started taking a low dose nicotene patch.  it seems that he improved drastically and is now much better. i didnt bother following it up as it seemed a bit fanciful, but my wife suggested i give it a go. so i got a pack of step 3 7mg patches and stuck them on. only four days in, and i realised this morning that my breathing is almost normal!  i'm going to carry on for two weeks and then stop.  however, if you try them and you drop dead, dont blame me.  but if youre getting on a bit like me and struggling with it, give it a go. there is anecdotal evidence on google but nothing science based as yet, but i assume some research is going on.  although i'm still unable to lift my 750-4 engine onto the workbench! but maybe i'm just old...

pete
4
Out & About / Re: SOHC meet in Scotland
« Last post by teenybop1 on Today at 05:57:49 PM »
Bugger, I'm in Malta on the 30th,but will be in Crieff in spirit  ;D
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CB350/400 / Re: Handlebar clamps
« Last post by Deano400 on Today at 05:55:45 PM »
Is this what you need Dave?

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CB350/400 / Handlebar clamps
« Last post by Laverda Dave on Today at 05:40:05 PM »
Hi All.
I am installing the handlebars but cannot find any info regarding the two dots on the clamps. Do these face forward or backwards? Does anyone also know the torque setting on the clamp bolts? Being steel bolts in alloy castings I don't want to overdo it and strip the thread in the top yoke. Memory tells me the front bolts of both clamps must be tightened first, am I correct or is my memory playing tricks!
7
Out & About / Re: SOHC meet in Scotland
« Last post by Orcade-Ian on Today at 04:37:49 PM »
Hi Gareth,
If all goes to plan I will be back in plenty of time from my little jaunt to Germany and Austria on the Forza, so should be able to use the 550 for the trip.  I think I might stay somewhere nearby for a night either side.  How long were you planning on staying after we've all got fed and watered?  I could probably stay at my Sister's place in Aberdeenshire and catch the Ferry home  the next day

Ian
8
CB500/550 / Re: CB550 Cylinder 1&2 not firing
« Last post by Robert W on Today at 02:24:52 PM »
Since governments have mandated alcohol petrol blends, we have a problem. How could they is another question. Ethanol will deteriorate everything that was not made with this compatibility in mind. it basically eats rubber, plastic, fiberglass, etc. Carb 1+2 fed from line 1 and carb 3+4 fed from line 2 both from the dual outlet petcock. I suspect you have little rubber bits blocking the idle jet, which is a lot smaller orifice than the main jet.
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CB500/550 / Re: Float height 500 k1
« Last post by Nurse Julie on Today at 02:21:40 PM »
22mm Hubert. If the carbs are clean, float valves seating correctly, no pitting in float valve seats, float pivots free and moving, then 22mm measured at the correct place stops any leaks.
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CB500/550 / Re: Float height 500 k1
« Last post by Robert W on Today at 01:33:13 PM »
1. Float height is the manual is 22mm. But this is just a guide. The tang on the floats when new are tangential to the pivot pin. However after mangling them several times, you may notice that they are no longer tangent. So feel free to adjust the float height to 23 or 24 mm. That little offset is magnified by the ratios of tang to pivot and float height to pivot. As long as your covering the jets it should be fine. Measurement of the amount of fuel in the bowl is a pain and not easily done unless you use a drain screw modified with a clear tube to view the fuel height.
2. If your having trouble with the overflows barfing out fuel, one thing for sure is the needle valve springs over time become unequally compressed and less resistant giving you all kinds of different measurements. I suggest buying new needle valve sets. You will notice the difference immediately when you set the carbs on the bench. The floats will touch the needle valves and not compress the springs at all. Also these stock Keihin carbs use a lot of o-rings which over time will not seal. Especially the o-ring on the needle valve seat. If this one is bad, your carbs will eventually overflow. These needle valves are brass on brass. Some are rubber on brass. So there is no substitute for a good spring in the needle valve.
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