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Topics - paulbaker1954

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91
CB500/550 / Bizarre rev counter problem
« on: March 24, 2018, 11:46:18 AM »
Ok I am stumped, rev counter sticks and jumps around above 5k. It seems to be not consistent though sometimes it sticks at 5 then jumps up all the way to 7 or sometimes just plain jumpy.

I have striped the unit and all seems good inside, running it up using a drill on the end of the cable it’s as smooth as anything all the way through the range.

I have tried different cables all to no avail

I am beginning to wonder if it may have something to do with the worm drive off the cam but it looks ok.

Questions

1) anyone any ideas, Iam sure I have isolated the counter and the cable as not being the root cause.?


2) would anyone have a spare worm drive I can borrow for a couple of weeks to try to see if that fixes the problem?Happy to pay postage 2 ways of course.

No urgency as am off road for a few weeks following Inguinal Hernia op so can’t get my leg over so to speak. Julie it is sodding painful by the way!


92
CB500/550 / Battery is it goosed?
« on: December 30, 2017, 05:34:33 PM »
Just noticed my 2 year old battery (Nitro YB12A-A) was struggling on cranking. I keep it topped up with an optimiser.

Just checked and it needed a massive top up so must have been halfway down cells - agggh!!!

Topped up and back on charge but will it be buggered having got so low or will it recover?

Interesting that I heard using optimisers tends to dry em up, anyone confirm this.

93
CB500/550 / Primary drive reduction ratios
« on: December 07, 2017, 01:51:10 AM »
Been playing with some numbers but now confused.

The tech spec I have shows the primary reduction ratio as 2.0 for the 500 Four but 3.063 for the 550.

I thought they would be the same so I am a little confused

Can any 4 gurus shed any light on this?

94
CB500/550 / 500 and 550 4s in Decembers Classic Bike Guife
« on: December 06, 2017, 08:44:12 AM »
Worth picking up a copy if you see one.

Not a bad article, features DS and sohc.net but NO MENTION of sohc.co.uk!!!! I feel a letter coming on  ;)

Also features a £7995 550 for sale at Fowlers Bristol (nice but overpriced IMO)

95
CB500/550 / Boyer with micro coils installation pic
« on: November 24, 2017, 12:15:16 AM »
Here it is all in place
I used 2 pieces of Al bar bolted to the original coil brackets and fitted the coils to these
The electronic box then fits snugly on top as shown

96
CB500/550 / Good oil offer Eurocarparts stock up for next change😀😀
« on: November 16, 2017, 08:14:45 AM »
Just an FYI Eurocarparts have a good offer on with 33% off and free delivery

I just bagged 5l of TripleX 10-40 for £17 all in —- USE CODE SAVE33 at checkout.

Worth stocking up at that price

(Yes I know they always have offer on !!! But not always with free delivery as well)

97
CB500/550 / Tappet Covers - Good Source
« on: November 14, 2017, 08:21:37 AM »
I Stupidly trashed the hex nut on one of my tappet covers at the week end due to a prior overzealous tightening !!

Got one of these from fleabay - impressed with quality at £3.50. They are listed not for 4s but are exactly the same part

https://www.ebay.co.uk/itm/HONDA-TAPPET-COVER-CUB-C50-C70-C90-50cc-70cc-90cc/202064372074?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

98
CB500/550 / Dodgy Rev Counter 500 4
« on: November 12, 2017, 08:40:50 AM »
Could use some advice!!

Rev counter climbs lovely to 5k then sticks  there and then jumps to 8k or thereabouts.

I have new cable, squirted some WD up the hole etc and still no better.

I am kind of coming to the conclusion that the P.O. rode around a lot just under or around 5k and it’s developed a “sticky point”

I have 3 alternatives

1) Send it for repair ( but that does look very expensive from the research I have done.

2) Source a fleabay replacement (not much around) and may be just as bad.

4) Have a bash at stripping it myself and seeing what I can do.

So now to my question, has anyone got any experience of repairing these units. I think they use a magnetic rotor system so are pretty simple so hoping a good strip and clean will sort it

99
CB500/550 / Boyer ignition fitting a lesson learned
« on: November 10, 2017, 02:06:15 AM »
I just finished fitting the Boyer system to my 4 but learned a hard lesson on the way that I thought I’d share.

The Boyer instructions say to remove the bob weighs and springs but do not make it clear you also have to remove the advance/ retard cam off the advance/ retard unit shaft as well.

I missed this and was confused as to why the stator plate did not fit properly and why the mag rotor fouled the chrome cover.

In my confusion I filed off the lugs on the end of the advance unit to get it to fit (unsuccessfully) without fouling the cover (thanks to Ash for replacement advance/ retard unit)

The answer was simple as always in hindsight, in that if you don’t take off the cam bush the stator plate won’t fit over the end of the advance unit properly and the mag rotor won’t fit over the end of the advance unit shaft.

It all comes down to a missing comma!!

Instruction 16 in the Boyer instructions says

“Remove the cam bobweights and springs from the advance retard unit”

It should say
“Remove the cam, bobweights and springs from the advance retard unit”

Amazing what confusion a missing , can lead to!!

As the saying goes

“Eats shoots and leaves” or alternatively “Eats, shoots and leaves”

I have notified Boyer by the way !!!





100
CB500/550 / Advance-Retard unit wanted 500 four
« on: November 04, 2017, 11:48:58 PM »
Does anyone happen to have a spare one knocking about in a box of bits am desperately seeking one complete with dowel pin also

Fingers crossed😀

101
CB500/550 / Boyer Installation Images
« on: November 01, 2017, 10:15:46 AM »
Hi Folks
I saw in a post a while ago some images from a member of their BOyer installation using some made up brackets (as opposed to the "tie wrap" approach.

I cant find the post can anyone direct me please

102
CB500/550 / Boyer Ignition - Again
« on: October 30, 2017, 01:04:47 PM »
Just taken the plunge and ordered the full kit with Micro coils after months of deliberating !!

I have a question re plug caps mine are NGK purply colour ones (sorry for the crap description)

Are these OK for use with the BOyer system? Is there an easy way to check them?

Cheers all

103
CB500/550 / K0 or not K0 that is the question
« on: August 25, 2017, 05:03:01 PM »
I keep seeing references to K0 crankcase shapes as being square and got me wondering

My bike was made Oct '71 and both engine and frame numbers start with a 1

but I am not sure what a "square" case looks like

Is mine a K0, here's a pic. By the way never noticed the bent fin before opinions on trying to bend it back or leave it !!!


104
CB500/550 / Fork Gaiters
« on: August 20, 2017, 04:50:49 PM »
Anyone recommend a source of decent front fork  gaiters

My DS aftermarket ones have both split after 1k miles

Not impressed😂😂

105
CB500/550 / Boyer suppliers and pricing and resistance
« on: July 30, 2017, 03:54:25 PM »
Been, like a few thinking of fitting a Boyer kit when I have some spare pennies.

I have identified kit 00089 for existing coils or kit 00289 that comes with coils.

I have a set of new aftermarket coils, so was thinking of using 00089 but what is the required primary resistance for kit 00089. Is there any advantage from using the Boyer coils in anyone's experience?

Also, can anyone recommend a supplier, as the Boyer site links only to 2 U.K. Distributors but they don't list the Honda kits on their web sites

Sorry if I am asking what has been asked many times before.

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