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CB500/550 / Re: Carb Cleaning Tips?
« Last post by McCabe-Thiele (Ted) on Today at 07:37:40 PM »
HFl is a nasty acid easily absorbed through the skin it will leach the Calcium out of your bones - my BiL has terrible hand issues from working with it in the glass cutting etching trade at Webb Corner in Tutbury.
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Desperately Seeking!! / Re: Honda CB250 or CB360 G5 Wanted
« Last post by rbt1548 on Today at 07:33:10 PM »
https://m.facebook.com/marketplace/item/417308490887179/?ref=browse_tab

There is a cb350  near Hitchin on F-book Marketplace. Is that a similar thing? Looks quite nice to me.

Thanks, not on Facebook but managed to get a look, not for me though.
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Project Board / Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Last post by mo goldie on Today at 07:23:54 PM »
Here is the update Ash.

Well wired all up and the first picture is the Regulator mounted under where the Rectifier will be mounted on the top, the Heatsink which the Rectifier is mounted under that, and the other picture is a little gadget that reads the out put and that is with Lights On and revs at 3,000 ... but I will still do the test using the 10A on the meter ( Without the stated lol )  to check that.... but i hope all should be there Now... that Rectifier do get warm Ash I Know it is meant to as why you said mount it on a heatsink which glad I did that.

So how do you think that is Now ?

Cheers

Mo
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New Member Introductions / Re: New to the forum
« Last post by Harriec on Today at 07:21:48 PM »
So I took the rubbers off and they were all ok (in fact they look brand new). I do think they may not have been seated properly. To be honest I think I've been dealing with more than one issue.

So with those things sorted...it now runs well. It starts in the button and chokes all good. It gets warm and I have it idling nicely at about 1500rpm but as soon as I throttle it gets stuck at around 3000rpm then if I leave it it will come back down and eventually cut out. I constantly have to choke or change the idle. I'm pretty sure it's not sticky carbs as I had them out and they looked good. And the cables are aok. I replaced and set them up myself. Any ideas what else it could be?

Sorry for all the questions...you've all been very helpful!
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Misc / Open / 2K rattle cans
« Last post by SteveW on Today at 07:20:20 PM »
Has anyone used the 2K rattle cans where you press the valve in the bottom to add the activator?

Was thinking about using them on my 550 frame.
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New Member Introductions / Re: New to the forum
« Last post by Nurse Julie on Today at 07:06:07 PM »
Welcome to the forum.
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New Member Introductions / Re: New to the forum
« Last post by Orcade-Ian on Today at 06:48:54 PM »
Hello again,
I have successfully used PU windscreen fitting adhesive on a supercharger inlet system which was leaking - as a temporary measure until the correct seals arrived.  They had a habit of being sucked in slightly and caused 'limp home' problems.  You need to be scrupulously clean before application to be sure of a good result but it certainly worked, especially in your case if they are made from unobtainium.

Ian
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CB500/550 / Re: Carb Cleaning Tips?
« Last post by AshimotoK0 on Today at 06:45:51 PM »
On one of Allen Millyard’s videos on YouTube, he put carb bodies in a bucket of water mixed with alloy wheel cleaner.

Left them in for a few minutes until the water stopped fizzing and they came out pretty good.

Hope it's not the alloy wheel cleaner that used hydrofluoric acid ... really nasty stuff that. I have 5l of it that somebody gave me  but always chicken out of using it.
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CB350/400 / Re: Engine rebuild Parts list
« Last post by Dolomite_ on Today at 06:39:54 PM »
Bearing clearance update 2.

From the generator side first:

brown 0.025mm green 0.038mm green 0.025mm green 0.050mm green 0.050mm
                                                                        brown 0.025mm

I put the brown in one of the green that measured at 0.050mm and it went down to 0.025mm. I'll remeasure the one that gave a reading of 0.038mm.

I think the best thing to do would be to go BROWN GREEN GREEN BROWN BROWN.

Then as other people have said, run it in carefully.
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New Member Introductions / Re: New to the forum
« Last post by K2-K6 on Today at 06:39:43 PM »
Welcome to the forum Harriec.

Nice bike the F2  and sounds at least like you're making a little progress.

Echoing not stripping the carbs initially, especially if the rubber intake are suspect and need to be competent to give sensible evaluation.

The rubbers to head are unique to this installation F2 / K7 as far as I'm aware, and maybe difficult in supply. If that's the case there maybe a temporary way around to get up and running if you need that.

Initially though, non leaking and fully warmed assessment should allow you to then plan which way you need to react.
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