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Messages - deltarider

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CB500/550 / Re: Clocks
« on: April 15, 2021, 12:43:44 PM »
Has any of us ever tested/compared the accuracy of the Nippon Seiki and the ND ones?

CB500/550 / Re: Clocks
« on: April 15, 2021, 07:36:06 AM »
That's the spirit, Sesman, don't let them Krauts tell ya.
I've tried to find a possible cause, but have not found much worth mentioning. Compared to its predecessors, there is a slightly different airfilter case and a somewhat changed exhaust. On the other hand: It would be a bit strange that, at the same time Honda was forced to bring the less polluting K3, they were allowed to continue the filthy F with just other colours. Oh... I forgot, in an American Honda booklet I've read an advised airscrew opening of 13/4 where it was 11/2 before, but if that is the cause of the poor driveability the Germans experienced...
What I now know for a fact however, is that there has been CB550Fs in Germany that had a different, 27 PS 'learner' camshaft fitted. Never having seen one in real life, let alone documentation on it, I had began to doubt its existence but, guess what, a month ago, one of our brothers in the German forum dug up his from the basement and even presented the document.

CB500/550 / Re: Clocks
« on: April 14, 2021, 05:36:06 PM »
Yes, 1977 F2. ‘Super Sport’ of course...the fastest model...
Not according to world's best Motormagazine (at that time): das Motorrad. The Germans were outright disappointed. See p.8, third column of the article below, where the F2 was compared to the European CB500K2 (that '4' means Four). The CB550F and the CB550F1 were the fastests and then... the CB500. I still have to find out what actually was changed and if Honda had been forced to it. It must have to do with new laws in the US, as the CB550F2 was marketed there in the same time the K3 was.

CB500/550 / Re: Brake caliper piston
« on: April 10, 2021, 06:43:37 AM »
Thanks, K2-K6.

CB500/550 / Re: Brake caliper piston
« on: April 09, 2021, 06:30:54 PM »
What's with phenolic? I don't even know what it is. :-[

CB500/550 / Re: Muffler connect rubber insert - alternative?
« on: April 08, 2021, 11:44:38 AM »
I can't get my after market pipes to line up  well enough to get that rubber on properly. 😳
Steris, Sohron's description has helped me a lot. My set is OEM though.

CB500/550 / Re: Cb550K 1978 Needle adjustment
« on: April 05, 2021, 12:31:10 PM »
I don't think you want to remove that pin.

Look down into the top of the slide and there are two screws, undo them on all carbs and you may  e able to turn the lift mechanism fully out of the way to get the needles.

Are you adjusting for pods?
If your screws have been as firmly fastened (assembly) as in the predecessors of your carbs, be prepared. You will ab-so-lute-ly need a JIS screwdiver to unscrew and not ruin their heads.

CB500/550 / Re: Cb550K 1978 Needle adjustment
« on: April 05, 2021, 07:27:29 AM »
I don't know what issue you're trying to cure. Me personally, I'd leave them alone. The effect will be little. Seen that you run pods, I'd concentrate on the main jets. Are the slow jets OK?

CB500/550 / Re: Cb 550 ss spain
« on: March 28, 2021, 01:45:30 PM »
a question for the experts, the bridge top is the same as other models ?, I want to change the one of my motorcycle f2 550 ss 1977
you have more experience than me in this
tank you Enter part no: 53230-390-010 gives:
    CB550FA (76) SUPER SPORT 550 FOUR, JPN, VIN# CB550F-2000003 TO CB550F-2010866
    CB550FA (77) SUPER SPORT 550 FOUR, JPN, VIN# CB550F-2100001 TO CB550F-2114871
    CB550KA (77) 550 FOUR K, JPN, VIN# CB550K-2000007 TO CB550K-2015308
    CB550KA (78) 550 FOUR K, JPN, VIN# CB550K-2100001 TO CB550K-2122082

The part was superseded by 53231-390-010 which gives the same result.

Sorry, I don't know the difference if any. Also note that forsaid parts finder site is about US models.
It could have to do with the changed bolts: 8X56 was changed to flange bolts 7X54 (PN: 90155-369-000) on later models. Could. This modification was done because people sometimes forgot to insert the special 'D' shaped space washers into the slits. When then torqued, the top bridge could crack. If you go to the parts lists, you'll probably find out. They're all here: Let us know. ;D

CB500/550 / Re: Ignition coil performance test
« on: March 08, 2021, 06:42:53 AM »
Thank you, all. Intriguing, that third electrode.

CB500/550 / Re: Ignition coil performance test
« on: March 07, 2021, 08:38:58 AM »
Thanks, Bryan. Was it a set frequency or could you vary?

CB500/550 / Re: Ignition coil performance test
« on: March 07, 2021, 07:39:32 AM »
I'm afraid I still don't understand. The ones next to each other, are they both Ground?
Anyway, this is how I've tested mine (be it statically!) the two plugcables facing each other sharing (and waisting) a spark. The black stripes are 7 mm apart. BTW, the white 'stripe' you see is not a spark, but a mere reflection of light. Has any of you seen that tester in the Honda fig. in real life/ Is it capable of testing dynamically?

CB500/550 / Re: CB550 strip
« on: March 06, 2021, 05:46:03 PM »
To me they look as new. Why did you take it apart?

CB500/550 / Ignition coil performance test
« on: March 05, 2021, 03:30:59 PM »
On p. 90 of the Shop Manual CB500-550 we find a coil test prescribed (see below). I don't quite understand Fig. 275 that shows three pointed electrodes. Why three and not just two?

Longer rubber "bellmouth" ? is to influence lower rpm more than higher range.

The carbs, 4 pipe exhaust and intake would seem to be setup with torque at lower rpm in comparison to the F model that would expect to be ridden at generally higher range. Is the gearing different between the two?
The K3-ED 's rear sprocket had 34 teeth where the F had 37. In continental Europe the K3 was marketed as the tourer version of the somewhat sportier F (see ad below). I remember having seen that even an aftermarket firm had two airfilter elements in their program: for the F and the K3. The wider and smaller opening remains a mystery however, if you see what the traders offer as OEM.

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