My Malaga 1200

The settings were probably about 400 C°.
Paul
The cases would have been annealed between 300c and 410c, ( around 350c if you're using soap as a temperature telltale ) but likely the crystalline structures of the castings got a tad 'upset' by the combustion of the motorcycle. Petrol fires can generate temperatures of up to 2138c depending on the oxygen and fuel supply. I imagine the cases got only a light toasting though, otherwise they would have transformed into a puddle! Apologies for the anorak response, but my work involves the delivery of avgas which requires ADR category 3 qualifications (bulk flammable liquids).
 
The cases would have been annealed between 300c and 410c, ( around 350c if you're using soap as a temperature telltale ) but likely the crystalline structures of the castings got a tad 'upset' by the combustion of the motorcycle. Petrol fires can generate temperatures of up to 2138c depending on the oxygen and fuel supply. I imagine the cases got only a light toasting though, otherwise they would have transformed into a puddle! Apologies for the anorak response, but my work involves the delivery of avgas which requires ADR category 3 qualifications (bulk flammable liquids).
2 x 44’s please……😊
 
Last weekend I started an archaeological dig in my garage. made some room to work and dug out my engine crane. This week I took the dust covers off my mutant motor and decided to finish it off. It's 6 months since I downed tools in the freezing cold garage but that was enough time for me to lose the neutral switch and shims I had had on the table in my flat staring me in the face since I last posted.
I got sick of looking for them and pinched one from another motor instead. A few more little jobs done to finish off the motor and it was time to get it from my garage a few streets away back round to my flat and the 1st floor car park.
After a bit of a hunt around I noticed the builders had a nice trolley in their compound that would do the job so I borrowed it, craned the motor onto it and pushed it around the local streets like the silly old fool I am. I did get offered some help so I must have looked beat ha ha!
Good job it fitted in the lift mind you.
Here is the motor back in the frame, or should I say a motor back in the frame because there isn't much left of the original. I've rebuilt the carbs over winter so that's another job done.
I bought some 1200 side panels and a tail piece and inner from Mr Unobtanium but I'm loathe to use them on this bike. I am looking forward to bolting it all back together and trying to start it though.

20260531_093447.jpg20260531_093424.jpg20260531_145353.jpg20260531_145218.jpg
 
No Chris, someone has rewelded the silencer inlets to suit an RGS. I'll go round my garage and dig some more out.

Sorted now but the silencers are too good for this bike ha ha!
 
Last edited:
They were scrap broken side panels and the horns are £5 (LOUD) Chinese ones so I just chopped the side panels to suit. I do have good stuff here but I am trying to use all the things that would go in the bin. The worst thing about it is that the SFC 1000 sold at Bonhams for £3600 and complete with every juicy extra known to man might have actually cost less.
 
They were scrap broken side panels and the horns are £5 (LOUD) Chinese ones so I just chopped the side panels to suit. I do have good stuff here but I am trying to use all the things that would go in the bin. The worst thing about it is that the SFC 1000 sold at Bonhams for £3600 and complete with every juicy extra known to man might have actually cost less.

Feel your pain Pat, I still cringe when I think about the SFC750 I could have bought for $2,500 in 1990 😢
 
Today was the big day for the old Spanish scrapper, I was going to take a petrol container to the garage but I thought why bother, just take the tank. I was a bit worried there would be leaks because someone had plastered araldite over a couple of areas of the tank underneath so I sanded it all off but found nothing.
I left the tank in my lockup last night just to make sure it wasn't leaking anywhere, You really don't want to be playing around with petrol etc where I live, they are still replacing the flammable cladding, but anyway this morning everything was good so I fitted the airbox and hoses, then the tank and fuel lines, much to my surprise no leaks from the carbs, pressed the starter and gave it a bit of throttle and it started.
It sounds nice actually, I had to set the tickover but that didn't take much doing and then rode it around the car park a few times. The only problem now is the gearchange, all the gears are there somewhere but 1st and neutral are the only ones playing the game reliably. The others go into hiding.
Rev counter works, speedo works, brakes work, lights work, horns work, comfortable riding position, if I can get the gears sorted I'll be well chuffed.
I've just realised looking at the date of the first post that it's 2 years of my life I've wasted on this bike and the gears still don't work ha ha!
 
Last edited:
The gearbox was actually in good condition but the detent on the selector drum wasn't operating very smoothly. I adjusted things until it was reasonably cooperative but I've got a nagging feeling that it might still be a problem. I presumed with a bit of oil and a bit of use would get better though. I could get all the gears when the cases were open.
The adjustment in the outer cover mechanism is obviously not correct either so I'll have another go at it this weekend. I suppose if I only ride it around the car park 1st gear will be adequate anyway ha ha!
One thing it does have is a nice light clutch, possibly as a result of fitting high bars which gives the cable a better run.
 
First (and only, I reckon) port of call is definitely the outer case adjustment! Not even sure how you'd 'adjust' the internal mechanism??? It's a curved plate with indents and a sprung roller on a lever.
 
Work will resume at the weekend. I bought another collector box off ebay so maybe I can get a better fit for the exhaust system as well. If I can get the gears working properly I will be well chuffed. Just tidying up to do after that.
 
First (and only, I reckon) port of call is definitely the outer case adjustment! Not even sure how you'd 'adjust' the internal mechanism??? It's a curved plate with indents and a sprung roller on a lever.
The Spanish can break anything although I think they are losing their touch a bit now.
 
Am I right in assuming that you had the cases split, Paddy? And the gearbox selected all gears when rotating the shift plate (with the indents)? There is no adjustment in there - other than shimming the gears on the two shafts, and hopefully noone had these apart before!
 
Back
Top