Repair-Chat
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ROD¹ said :-
On the older Japanese bikes with the trip knob to the side of the Speedo, ( as opposed to on top of the Speedo ) there used to be a small hole underneath the Speedo in line with the trip reset knob. I can't remember if this was for a screwdriver or an Allen key, but this hole gives access to a small grub screw which needs to be loosened to remove the trip knob.
Hope this helps. Sorry if I haven't made myself clear. If you still have problems a picture may be of use.
09/11/2025 16:23:35 UTC
Ian Soady¹ said :-
Thanks Rod, will have a look tomorrow. It's often these daft little things that throw you.
09/11/2025 16:44:33 UTC
Glyn said :-
Sadly, that is not the case for my TZR speedo. The only way to get it off was a heavy hand that broke it. On closer examination it was only an interference fit but there was no way it would just slide off. I had to file off one side of the knob shaft to remove the bit left behind. Now I’m making a shaft to connect the shaft and the knob. Good luck Ian.
09/11/2025 21:37:44 UTC
Ian Soady¹ said :-
One of the speedos - the one in the cluster I bought - had a tiny Phillips screw buried inside the knob - this came out easily enough so half way there. The one on the speedo I want to fit has nothing similar. I don't mind if the knob breaks as I may want to extend the shaft anyway, but I don't want to damage the inside workings.
10/11/2025 13:33:53 UTC
Ren - The Ed¹ said :-
It's a good job Finbarr Saunders isn't reading this! Fnarr fnarr yik yik...
10/11/2025 20:53:16 UTC
Ian Soady¹ said :-
I had to duckduckgo that (other search engines are apparently available). I msuppose I'm not surprised you're a Viz aficonado Ren....
11/11/2025 09:43:19 UTC
Ren - The Ed¹ said :-
I wouldn't go as far as my being a Viz aficionado Ian, I've never once purchased said comic and only glossed over random copies over the years. It's just a part of everyday culture, perhaps you're just not down wiv da kidz like what I is innit ?.
13/11/2025 22:15:23 UTC
Glyn said :-
I decided that this Triumph story maybe better placed here in the Repair section rather than general chit chat, (decision with Ed of course).
I’ve removed the triple carbs and found that one of the butterfly spindles is jammed through its carb body which is the cause of the stuck throttle. We now have a huge number of miscellaneous carb parts in the ultrasonic cleaner. I have established that the engine does actually turn over on the starter motor driven by the original battery and there is a spark. It’s almost finished!!
25/11/2025 16:19:08 UTC
ROD¹ said :-
Glyn, we love all of the content that you post, but we really love content with pictures.
Although my current bikes a have dragged me into the twenty first century too some extent, I still miss using the skills I had built up with carbs contact breakers and dial gauges ect.
25/11/2025 18:32:29 UTC
Upt'North ¹ said :-
Rod, I was watching some'at on the gogglebox the other night. There was a mechanic scratching his head because this car had points and condenser. How times change.
Although I really don't miss stripping and rebuilding carburetors.
Upt.
25/11/2025 21:02:59 UTC
Ren - The Ed¹ said :-
Glyn - fear not! As long as people's comments aren't nasty and 'orrible then they can go wherever they like. I'm not getting all precious about this must go here and that must go there. Admittedly... logic dictates the repair chat makes more sense.
26/11/2025 08:03:37 UTC
Glyn said :-
Strange as it may seem, I do like to strip and rebuild carbs, especially since I’ve spent the last 3 weeks repairing and painting fairing panels for someone else’s TZR. My TZR is all finished now and under covers in the corner of the garage. The triple Mikuni BST36 carb set up on the Triumph is relatively straightforward but there are dozens of o rings that really should be replaced. I have tracked down the sizes but they need to be nitrile as anything else will fall apart. I’m glad that, as a species, we’ve done away with points and condensers as I always faffed about setting them up including bobweights for advance retard settings. Here’s a pic of an LC 350 bikini fairing and TZR nose cone that I’ve completed recently;
26/11/2025 13:01:41 UTC
Ian Soady¹ said :-
Hi Glyn. I like doing carbs as well but mainly single ones! I always understood that nitrile wasn't the best for fuel and that Viton was more resistant, especially to the cocktail of weird stuff in modern fuel (not ethanol which I don't believe to be a problem) but benzene, acetone and the like.
26/11/2025 15:35:00 UTC
ROD¹ said :-
That looks like a very professional paint job Glyn, lovely.
26/11/2025 20:05:36 UTC
Glyn said :-
You’re right Ian, the new o rings are viton. Expensive at £44 the set but I’ve saved a lot by not having to buy a new battery as the one supplied is holding up well. I’ll wager that the full carb set from Ali express at £14 won’t be made of that material. One of the choke slides is broken but I’ve bought a used item as a replacement. The airbox , (supplied in one of the cardboard boxes) has a miriad of tubes in and out and the various connections are unknown to me at this stage. Here is a picture of the ultrasonically cleaned carbs. Apparently, these Mikuni BST carbs are used on the 1200 Suzuki Bandit bikes.
27/11/2025 15:28:34 UTC
Glyn said :-
Do you think I need to do something about this fuel tank? I’m going to try the electrolysis system with sodium crystals and a 12volt battery. I’ve soaked it in white vinegar for 2 days without much change.
29/11/2025 09:21:07 UTC
Ian Soady¹ said :-
I've heard positive things about electrolytic rust removal - generally from unreliable WWW source - but never tried it. I did give oxalic acid a try for some rusty nuts & bolts but it just turned the rust green. I look forward to seeing how electrolysis works for you.
29/11/2025 09:41:54 UTC
Glyn said :-
I’m 3 hours in and something is definitely happening in there. I used 5 tablespoons of Sodium carbonate (baking soda) per gallon of water ( Trumper tank is 4 gallons). I then put a steel threaded rod through the top of a rattle can lid to isolate the anode (threaded rod ) from the tank. Negative on the tank and positive on the rod. It’s drawing about 2.4amps so I’ve connected a battery charger to compensate. It can take many hours to work fully.
29/11/2025 13:01:30 UTC
Glyn said :-
This is what’s happening!
29/11/2025 13:02:19 UTC
Ian Soady¹ said :-
Looks exciting! The methods I've seen use washing soda (sodium carbonate) rather than baking soda (sodium bicarbonate) but I'm not enough of a chemist to know the difference. I do think your scones might taste a bit funny of you put the former in them though!
29/11/2025 15:03:39 UTC
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