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Anorak's Corner / Re: Metal Covered Plug Caps
« on: May 05, 2024, 12:41:09 PM »I was told they were used to surpress radio interference back in the day.
Evidently the 1st Kwack triples CDi's played havoc with TV's
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Anorak's Corner / Re: Metal Covered Plug Caps« on: May 05, 2024, 12:41:09 PM »I was told they were used to surpress radio interference back in the day. Evidently the 1st Kwack triples CDi's played havoc with TV's 2
Anorak's Corner / Re: Metal Covered Plug Caps« on: May 05, 2024, 10:44:42 AM »That type of plug cap was also fitted to the Opel Rekord (D) Coupes back in 1973 I was drivng one down to Cornwall for our sumer holiday when the car dropped onto 3 cylinders in heavy traffic. Being an automatic it was it was almost undriveable. There are plenty of other people fitting them to our bikes Ted for originality ... I bought 5 sets of each cheap and kept one of each set for myself and sold the rest on eBay. They didn't hang around for long before being sold ! My 500K0 didn't have them as it is a 1st batch USA (squared off crankcase) bike and they were never fitted in the US. The 500 ones (fitted to UK and European bikes) are the same as the 400F ones. 3
Desperately Seeking!! / Re: 400/4 Air Filter 'Panching Plates'« on: May 05, 2024, 10:21:17 AM »
Putting the plates in the post 1st thing Tuesday Dave
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Anorak's Corner / Metal Covered Plug Caps« on: May 05, 2024, 10:18:41 AM »
My UK 750K0, CB400F & 450K0 Bomber all came originally with metal plug caps.
Much maligned on here I know but for originality I am fitting them. I managed to get NOS ND ones for my 4 cylinder bikes but the Bomber ones are hard to come by. also one of my NOS 4-cyl ones got badly damaged with acid. So this week I managed to de-crimp the corroded one and replated a grotty looking Bomber one. Pretty sure my CB250K0's and K2 would have had them but not found any of those yet. I plan to do some tests on them to see why they tracked over the HT in the wet. It's not obvious looking at them why they would track. I suspect the rubber insert may not have sealed too well but a new part moulded in silicone may fix it. A lot of heathen dealers (like the one who supplied my 1st 400F ) just ripped the metal covers off and damaged the grey plastic body in the process. [ Guests cannot view attachments ] 5
CB750 / Re: WTF Exhaust« on: May 02, 2024, 01:40:27 PM »https://youtu.be/i31ukMWH9oY Also 400/4 that sold £1500 not sure if provisional though https://www.youtube.com/watch?v=ok-KWZRJ1m8 6
Misc / Open / Re: All gone now 😢😢😢« on: May 02, 2024, 11:15:44 AM »
Did you sell the original pipes off it on FB Julie? Seemed like a good deal to me.
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CB350/400 / Re: Power consumption, E-ignition vs Points. also - spare advance cam?« on: May 01, 2024, 09:01:33 AM »
I need to investigate that Dave as mine was just flopping about when I bought the bike. I took one of those Boyer units apart that a member here kindly gave me. Interesting design and it was patented by Ernie Bransden I think. From memory it uses a wasted spark system so doesn't have two switching transistors for each of the two Honda Four coils. So I guess the current draw must be higher than the standard points setup. Really need to revisit it in case I am talking BS plus design some kind of holder for the potted block. Tell you something though, that system seems to have stood the test of time.The failed unit a member (John Webley IIRC) donated to me had failed after many years and miles of reliable service. Plus it was only a failed capacitor IIRC not the main switching transistor.
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CB350/400 / Re: Power consumption, E-ignition vs Points. also - spare advance cam?« on: April 30, 2024, 08:37:23 AM »
I have been an electronics design engineer for yonks
![]() So if you are only doing relatively low miles and you can find decent quality, preferrably OEM points and condensers, then I would fit the standard system. One DS system I saw has the electronics on a circular PCB that replaces the points plate. Irrespective of if it functions OK it only looks to have rudimentary weather/vibration protection and that would really put me off. I think the original Boyer system possibly draws more current than standard due to it's unique (and patented IIRC) design. My CDi system used an inverter which drew low current at low revs and higher current at high revs. This is the revers on the standard system. Oddjob swore by the Hondaman ignition which basically does what my CDi did but just utilises transistors to switch the coil current rather than through the contact points rat. Mine whacked 400VDC across the coil from a charged capacitor... which is what Honda did on the CX500/Superdream etc. etc. ... Like my CDi, with the Hondaman ignition, you can simply revert to the standard setup with a switch because both use the standard points and auto-advancer. 9
Misc / Open / Re: BUSSO CEASING TRADING« on: April 29, 2024, 02:00:29 PM »A lot of us people will not be happy as they are waiting for 750 units I just found out that they were doing Kwak Z650B1 replicas .. now that would have been interesting. 10
Misc / Open / Re: BUSSO CEASING TRADING« on: April 29, 2024, 11:13:59 AM »
Interesting reading some of Ian McDonald's (ex-Motad) FB comments and he used to contribute on this forum. They were producing a staggering number of exhausts in their heyday.
Not really followed the Busso story on FB much but gather there have been lots of discussions. Were they not up to scratch/bad delivery or just overshadowed when DelKevic (i.e Derek and Kevin of DK Motors) started producing. Interested to see how the Delkevic ones pan out long term. (just of passing interest as I won't need to buy any). Would be interested in the MoldLab (ItalianMob ![]() 12
CB750 / Re: CB750 F2 Primary chains« on: April 29, 2024, 07:00:12 AM »
When you replace. "To stagger or not to stagger ...that is the question"
I chose to stagger mine. [ Guests cannot view attachments ] 13
Desperately Seeking!! / Re: 400/4 Air Filter 'Panching Plates'« on: April 25, 2024, 07:30:09 PM »
Not sure on the tank decal Dave. But I can match the dark blue from the front mudguard one if I need to paint on. Were they painted on for early RSA's ?
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CB500/550 / Re: Best workshop manual for CB550« on: April 25, 2024, 07:58:35 AM »
When I am at work next week I am going to scan my CB500/4 Haynes Manual. Much maligned by some folk on here but I find them a decent addition to the Genuine Honda Shop manual. I already scanned the 750 SOHC one and it's in my Dropbox links already.
I also have the 500 Clymer one I think but from memory that was all over the place and I never got on with it. 15
Desperately Seeking!! / Re: 400/4 Air Filter 'Panching Plates'« on: April 24, 2024, 09:58:24 PM »Wow, fantastic that's a great result. A thousand thank you's Ash. Without your help with parts I'd be well and truly stuck. No worries .. I will do them Wednesday next week if that's OK Dave. Not got much done on CB250RS lately as we recently went to Tenerife and then Derbyshire for Cathy's birthday. I will update my resto thread soon. Everything is in epoxy primer including the frame and tank etc ready for paint. I am going for 2k semi-gloss on the frame etc and I got 1 litre (thins to 2l) of Dalcoat base-coat for the pearl blue metallic (correct Honda code .... a fraction of the cost from RS Bikepaint) plus some beautiful decals with loads of discount from Piki. The delay has been checking the frame for misalignment but my DIY jig and calcs. say it's with 0.4°, which I deemed to be just about OK. I think if I hadn't taught myself to paint to a reasonable standard over the last 2 years the project wouldn't have been economically viable. I guess I will be in it if for the tune of £2k total but that includes a totally NOS top end apart from the camshaft. |