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Topics - McCabe-Thiele (Ted)

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CB500/550 / Chainguard Repair
« on: November 28, 2023, 04:54:49 PM »
Not sure if it will work long term but used some Epoxy Resin repair solution to fix a broken section.  I added some micronised graphite to make it black.
I have some proper paint for flexible plastics that I will paint it with eventually.
Cleaned/roughed up the broken area & drilled it for a couple of strengthening pegs plus some saw cuts to help the bonding.

.chainguard 1 by Macabe Thiele, on Flickr

.chainguard 2 by Macabe Thiele, on Flickr

.chainguard 3 by Macabe Thiele, on Flickr

Purists do not read beyond this point.

As some folk will know I have fitted a LED unit to my 500 - good old google has come up with a suggestion that I might like this retro P700 type lamp.

Just wondered if anyone here has fitted one - a bit cheaper than the DS unit - not sure what the beam pattern would be like.

P 700 by Macabe Thiele, on Flickr

Misc / Open / Rear Chain Adjusters - am I being too fussy?
« on: November 15, 2023, 08:14:28 PM »
It's been nagging me for a while that my chromed rear chain adjusters are not a pair the chrome - is acceptable on both.

One has what I would describe as a threaded welded inside boss, the other is like a captive nut.  Knowing my luck if I buy a replacement it will be something that matches neither.

p/n 95014-19000 £12.58 plus post at DS shown as Genuine Part on the 500 page.

CB500/550 / Correct spark plugs for my 500 ?
« on: November 13, 2023, 02:41:08 PM »
Parts manual shows NGK D-7ES or Denso X-22ES

The Denso seems to now have a U at the end now shows as Denso X-22ES-U

The NGK looks as though it is obsolete - I have resistor caps so don't want NGK DR-7ES.

Green Spark Plug Co shows the Denso X-22ES-U at good price.

Can't find my old spark plugs - I've been using some used NGK D8EA plugs to keep debris out.

CB500/550 / Powder coating the front hubs on my 500.
« on: November 11, 2023, 04:10:09 PM »
I'm planning to take my 500 hubs to CWC for the wheel builds in the next few weeks.
Chatting to them a couple of weeks ago they seemed to be pushing for Ceracoat rather than a chrome finish powder coating.
One aspect was that it is thinner & hard wearing.

That had me thinking about how far the coating should go on the disc side & on the Speedometer drive side. Obviuosly not on the taper where the disc fits - would it be an issue if on the speedometer drive side they did the face where the drive plate sits?

.500 brake disc side by Macabe Thiele, on Flickr

.500 speedo side by Macabe Thiele, on Flickr

CB500/550 / Floppy rear footrests.
« on: November 06, 2023, 02:34:03 PM »
Is there an easy fix for floppy footrest when in the upright position?

Misc / Open / Sleeper train journeys
« on: November 02, 2023, 07:26:11 PM »
Wendy & I fancy a trip by train to Scotland on a sleeper type holiday for a few days next summer.

Has anyone here any pointers or experience?

I bought a B & W rear plate for my 500 in February this year from a firm calling themselves "Qualitypressings" on flea bay (seller currently on holiday).
It was not cheap at £18.70  it included a pretty substantial bonded on alloy backing plate so on the face of it seemed good quality when it arrived.

I was well miffed when today as I carefully attached the plate to the rear fender mounting the black backing was already starting to bulge from the plate.
Even worse as I tightened up the plastic screws two ping marks appeared on the plate that have no obvious cause - not the mounting bracket plus no corresponding marks on the back of the plate. The rear of the plate when I removed it is lovely unmarked flat alloy wtf. I have contacted the seller but unlikely they will replace it f.o.c. imho.

Does anyone make propper pressed plates today or are they all stick on types as mine clearly is?

Wish I had orderd B&W plastic now.

.Pic 1 by Macabe Thiele, on Flickr

.Pic 2 by Macabe Thiele, on Flickr

CB500/550 / Chain surface rust question?
« on: October 26, 2023, 10:59:30 AM »
My 500 clearly had some damp or rain exposure as this is the chain that was new about 2 years ago now - it has covered less than 50 miles.

The outside part of the chain has surface rust, the inside is almost rust free - is it worth cleaning it up & using it?
I guess the blue appearance of the chain will be gone once I remove the surface rust with rust remover.

It's more of a safety question than cosmetics - I have new sprockets.

.side b by Macabe Thiele, on Flickr

.side a by Macabe Thiele, on Flickr

CB500/550 / I must be stupid but how does air chamber fit?
« on: October 23, 2023, 01:55:28 PM »
Thought I would bob the carbs onto the engine - not difficult - nicely in place nipped up the circlips.
Thought I might as well pop the 4 into 1 air chamber box onto the carb intakes.
It will not fit from the carb side of the frame so tried popping it down from the top in the middle of the frame with the battery & battery box removed but it is stll too big to fit past the right side of the frame.
I have the four rubbers fitted to the plastic air chamber box - I can get the rubber onto number 1 carb but the other end will not get past the frame!

Do I need to remove the right hand upper engine mounting bracket to get the end of the air chamber box past the frame or is there some other rubics cube route that I am missing?

I have removed the carbs again just in case!!

Member 4 Sales / 500 front fender brace/bracket.
« on: October 18, 2023, 04:57:02 PM »
I fitted the DS front fender as my original one was rotted out - I did drill out the main top brace/bracket if it is of use to anyone - free just postage cost.

I also have the stays but due to length postage might not be worthwhile to anyone.

CB500/550 / The 500 exhaust conundrum.
« on: October 14, 2023, 09:34:22 PM »
I need to start thinking seriously about an exhaust stystem for the 500 I'm minded to go for the Dekelvic system as it's not daft money plus it's stainless as well.
I like a longer silencer so the Mega looks good plus they do Black Ceramic for a bit extra not sure what it will look like in a couple of years.........but.

When these bikes were new in the 1970's I thought the exhaust system was very dated across the range compared to other bikes of the period (the word bulbous comes to mind) - I thought Goldstar silencers looked great on my Triumph 21 - now I think the original Honda four pipe system looks right on a 1972/3 era bike. Such a pity that Dekelvic do not make a four pipe system.

Are there other new options on the new market that I am missing?

I'm hoping my BiL has a set I can borrow in the new year so I can improve on bench sync process on the 500.

I've looked at previous posts as to reasonable quality gauges but quoted item numbers are out of date. My Ultrasound Bath is a Vevor - still going strong so wondered if anyone here has used these?


CB500/550 / 500 petrol pipe options/considerations.
« on: October 13, 2023, 05:57:46 PM »
The existing petrol pipe on my 500 is clearly marked as 6mm i/d - it measures around 11.5 mm external diameter. The two pipe lengths are aroun 12" & 9" in length for the twin outlet Petcock.
It does not leak & there were no clips on the pipe that seems to fit quite well. The T piece on the carbs has a diameter of 5mm at the narrow centre section with the two  built in flanges/olives measuring 7 mm.
I am minded to replace the pipe as it has gone quite stiff not being as supple as new hose.

I've done a search on this site regarding petrol pipe diameter on the 500 the consensus being it is usually 5.5mm i/d DS does a metre length for £25.90 including postage under p/n 95001-550-0160M no details as to material used.

Trawling e-bay there is Nitrile Braided Hose 5.5 mm i/d 10.5 approx  @ £6.02  per meter.


There is Ethanol Proof E85 Bio Hose (Silicone?) suitable for Diesel or Petrol etc i/d @ £27.70 per meter.


I am at a loss as to what to buy.

I have had to move the circlips to the central position 3 on my 500 carbs. I was able to remove the two screws at the base of the slider/plunger without the need to remove the plunger arm from the slider first. I just removed the bolt at the pivot end and slid out the the gubbins.

Many folk here will know how fiddly it is putting the two screws back in place with the arm still in place so thought I would share my tip here. As a former Tropical fish keeper I still have odd bits of Neoprene & Silicone air line pipe (5.5mm ish o/d) in my garage. plus an old bit of steel similar to a barbecue skewer.

The Silicone tubing I found best as it was easy to push the head of the screw into the pipe so you have a length of tubing that will easily reach the bottom of the slider. I then placed a metal rod that was a loose fit inside the pipe to give the pipe a little rigidity.

This enabled me to place the screws visually in line with the thread in the slider - by turning the pipe with my fingers it was very easy to screw them in with no fear of a crossed thread. When both were in place fully screwed down by just using the pipe I was able to easily nip them up with a JIS tool. The Silicone pipe is easily pulled off the screw head when it is done with.

This tip is for us amateurs not the former professional here.

.PXL_20231013_095540299 by Macabe Thiele, on Flickr


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