Repair-Chat
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Ian Soady¹ said :-
Looks great Glyn.
11/12/2024 10:12:07 UTC
nab301 said :-
I've had some success with smaller repairs recently on the likes of an indicator lamp housing that had been snapped off ,using the superglue and bread soda method,
Nigel
16/12/2024 14:37:39 UTC
Ian Soady¹ said :-
Yes I used that method on some fairing lugs for the Tiger and it seemed to work well. To avoid confusion, bread soda is often known as bicarbonate of soda, sodium bicarbonate or raising powder. I suspect any fine grained powder would do the job.
16/12/2024 15:42:12 UTC
Glyn said :-
Just a quick update on the TZR rebuild. Mostly it’s been just cleaning and painting but I’ve managed to fit new headstock and wheel bearing sets. I’ve rebuilt the forks with new seals but there is some putting on the fork tubes that I’m slightly worried about. I’ve done the 2000 wet and dry trick on them but there are some small indentations where the rust was. Rechroming is possible but expensive. I’ve got it back on its wheels now so currently refurbing the front caliper. After that the frame should be complete and I’ll remove the engine.
04/01/2025 14:04:04 UTC
Ian Soady¹ said :-
Looking very tidy Glyn. Epoxy resin in the rust pits? It's worked for me before now. The bike looks as if it's resting on the radiators?
04/01/2025 15:03:59 UTC
ROD¹ said :-
Ian, If you look closely,I think you will find the radiator is in fact a piece of wood.
04/01/2025 18:07:45 UTC
Ian Soady¹ said :-
So it is!
05/01/2025 10:02:21 UTC
Ren - The Ed¹ said :-
I'm not quite sure Glyn has got to grips with liquid cooled bikes just yet. Even I - the king of the bodge - doubt that the TZR's liquid cooled engine is going to be sufficiently cooled by a piece of what looks like decking. I can only assume Glyn mistook the grooves in the decking to be cooling fins? I mean it's an honest mistake any of us could make (Ian) but how's he going to attach the coolant hoses?
05/01/2025 19:01:10 UTC
Glyn said :-
I have to admit the tree based technology that I invested in the radiator has failed me. However, I’ve converted the aforementioned piece of decking into a stand when combined with a pair of axle stands. The bother of no centre stand is a problem in the workshop. There’s no real flat area on the bottom of the engine and it all gets worse with the exhaust pipes on. Being centre stand-less is even more of a problem at the MOT station when both wheels need to be off the ground for bearing checks. This has resulted in hiking the bike into the air on the side stand, something I’m not happy about at all.
07/01/2025 16:24:54 UTC
nab301 said :-
Looking excellent Glyn !
Nigel
07/01/2025 16:55:35 UTC
Ren - The Ed¹ said :-
We can all see you're using the decking as some kind of makeshift stand system Glyn, but never let the truth get in the way of a good story. I too wince somewhat when the whole motorcycle's weight is heaved onto the side stand although I have yet to see a side stand collapse under this duress. You should see how the bikes are moved around in bike shops by experienced handlers, scary.
08/01/2025 08:03:51 UTC
Ian Soady¹ said :-
I know what you mean, Ren. They seems to control them with one hand on the left bar and the other on the seat, then whizz backwards and forwards at a rate of knots. If I tried that I'd end up in an untidy heap. Although my method of both hands on the bars is very inelegant at least I can stop when I want.
08/01/2025 14:18:57 UTC
Glyn said :-
I've been in the process of re-converting (that is converting it back) to run the TZR250 on the Yamaha Autolube pump. This is an oil injection system for the upper cylinder lubrication which squirts oil directly into the intake manifolds at an auto adjustable rate. The previous owner had changed the bike to run on premix 2 stroke petrol. However, they had not done it correctly. If you're going to do that then the pump should be removed completely and the hole blanked off. If you fail to do this the pump keeps working and, without lubrication, it can score the internal piston and bore of the pump. So, I've overhauled the pump and the system is bled, new hoses all around and the pump stroke set up. It must be a real pain to carry 2 stroke oil to the garage every time you fill up if you're a premix fanatic. The advantage of the autolube pump is that the oil still goes into the cylinders on long downhill runs with the throttle closed (2T engines can seize on premix because no petrol = no oil). Also, Yamaha fudge the polution figures with this system because there is less oil at tickover so less pollution whereas premix has the same oil ratio all the time. Most of the testing is carried out at tickover.
14/01/2025 18:06:33 UTC
Upt'North ¹ said :-
Now you've got my memory cells, who am I kidding, memory cell working. Does anyone remember the two stroke oil and redex dispensers on the forecourts. God I'm old!
My own experience of Yamaha auto lube was a lot of aluminium in lane 3 of the M6.
14/01/2025 23:28:48 UTC
Glyn said :-
I’m with you there Up’t, I remember a tube that was attached to the underside of the petroleum cap of my BSA Bantam. You turned the cap upside down and filled it with oil and that would equate to oil needed for a single gallon of fuel (that I paid 3 shillings and six pence for, todays money 17.5p). Everywhere I’ve read suggests that the Yamaha Autolube pump is very reliable although probably not as reliable as premix. Your experience would suggest otherwise. Pistons are not that expensive though. I’ve lightened it now, which engine did you suggest I drop in Ed?
15/01/2025 08:05:19 UTC
Ren - The Ed¹ said :-
And people wonder why I hate 2-strokes.
Errrrm. You know the MT03 (the twin, not the earlier single) motor is a cracker and should be small enough to fit. If you want good fuel then a CB500X/F/R/Rebel/CL? Power - then the MT07.
15/01/2025 08:10:25 UTC
Upt'North ¹ said :-
How about the 2024 Himalayan 450 engine? Probably as much bhp as the original.
Although that's a wild guess.
Upt.
15/01/2025 08:40:16 UTC
ROD¹ said :-
My Kawasaki KR1 was 59 hp, so the Yamaha is probably around that figure.
I believe the 450 Himalayan is around 40 hp.
15/01/2025 18:59:13 UTC
Glyn said :-
I like the MT03 idea and engines are readily available from approx £500. Add that to the extras needed like CDI etc and I’ll be up around £1k. Fit that in the frame and it’ll certainly loose about half it’s current value instantly. However, complete TZR 250 engines are up for as much as £2k. The original output for the TZR is just shy of 50bhp. I’m sure the Himalayan would be a real headache to fit whereas the MT03 is fitted in a similar way to the TZR. Don’t worry, all this is hypothetical and won’t be happening.
16/01/2025 18:22:54 UTC
Ren - The Ed¹ said :-
You had me going for a bit there Glyn - I had dreamy visions of a TZR that upon starting does not make that godawful ring-a-ding ding noise but a nice gentle thwump-thwump of a PROPER engine. Alas you tease me.
20/01/2025 07:49:14 UTC
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