- Thread starter lchris21
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lchris21
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Thanks......it turned out a bit more work than getting it running 2 years ago
stuvy
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Thanks......it turned out a bit more work than getting it running 2 years ago
I have the same with my little TW200, started as a freshen up and got sidetracked with work and loss of motivation I did a few bits yesterday but need to bring it from my parents to mine so I have it in front of me to work on every day
lchris21
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its just sandwiched between using the mounting screws and where it attaches to the frame
slim_boy_fat
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lchris21
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Righto................plan was keep it nice and clean before the first show of the year, not attempt to run it as I didn't want any last minute dramas, didn't want anything to fall off or tempt me into riding it and chucking it into a hedge before its first public outing..it had spark and it had fuel, turned over and nothing caught fire so I left it at that....
Anyway as we know 2020 is now a complete right off and there will be no public shows, so i set about getting it running
..................its not really a motorbike anyway unless it makes a noise and you can ride it 
............chucked some petrol in, and gave it a shot.............mothing, nowt, nadda 
Turns out I'd only forgot to drill the stainless manifolds Id made back in the winter.......
That sorted onto the big moment..............2nd attempt and it fired, idled, very roughly then died........3rd go, bit more throttle, idling very roughly but kept it running..............quickly deduced something was not right.....cut a long story one of the plugs was dead (easy fix), and a few short after days of head scratching, jets in and out, needles up and down, timing off and on, strobes and multimeter all over it...etc etc, Id realised the plug and play carbs had had the slides in the wrong way round since Id received them
........she was running pretty rich as you can see
Anyway as we know 2020 is now a complete right off and there will be no public shows, so i set about getting it running
..................its not really a motorbike anyway unless it makes a noise and you can ride it ............chucked some petrol in, and gave it a shot.............mothing, nowt, nadda Turns out I'd only forgot to drill the stainless manifolds Id made back in the winter
.......That sorted onto the big moment..............2nd attempt and it fired, idled, very roughly then died........3rd go, bit more throttle, idling very roughly but kept it running..............quickly deduced something was not right
.....cut a long story one of the plugs was dead (easy fix), and a few short after days of head scratching, jets in and out, needles up and down, timing off and on, strobes and multimeter all over it...etc etc, Id realised the plug and play carbs had had the slides in the wrong way round since Id received them........she was running pretty rich as you can see
lchris21
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LOL......trying to work out Youtube editing is harder than building the ting.......bear with me
stuvy
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Righto................plan was keep it nice and clean before the first show of the year, not attempt to run it as I didn't want any last minute dramas, didn't want anything to fall off or tempt me into riding it and chucking it into a hedge before its first public outing..it had spark and it had fuel, turned over and nothing caught fire so I left it at that....
Anyway as we know 2020 is now a complete right off and there will be no public shows, so i set about getting it running
Turns out I'd only forgot to drill the stainless manifolds Id made back in the winter
That sorted onto the big moment..............2nd attempt and it fired, idled, very roughly then died........3rd go, bit more throttle, idling very roughly but kept it running..............quickly deduced something was not right
View attachment 225745 View attachment 225746 View attachment 225747 View attachment 225748
quite a moody shot
stuvy
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nope
lchris21
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Smaller pilot jets, slides in the right way round and some minor tweaks to the timing and its idling...........................idling like a 44 years old twin cylinder bike 
........................got the baffles in this time though .....trying to dial in motorbike in a suburbia in the middle of lockdown is not very neighbourly 
........................got the baffles in this time though .....trying to dial in motorbike in a suburbia in the middle of lockdown is not very neighbourly
lchris21
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After I got it idling, I used my "socially distanced" neighbour to get some video footage of my "unnecessary" journey up and down the street to see what it rode like.............it rode nice but I noticed on the video that it was smoking a bit too much for my liking, still running a bit rich but something a bit more......oily 
..............decided an oil stem valve seal change in-situ was a good shot so made a widget up to do that? The engine had checked out ok for compression and leak-down but it was worth a go anyway. In hindsight I should have learned my lesson from my last builds, and completely teared down the engine for a full once over, but as it was running fine all those years back I decided to gamble.....which has bitten me in the bottom
..............decided an oil stem valve seal change in-situ was a good shot so made a widget up to do that? The engine had checked out ok for compression and leak-down but it was worth a go anyway. In hindsight I should have learned my lesson from my last builds, and completely teared down the engine for a full once over, but as it was running fine all those years back I decided to gamble.....which has bitten me in the bottom 
lchris21
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Fast forward to last week..............mid lockdown still nowhere to give it a good run, I took it up a local quiet road and gave it some beans..........it runs surprisingly well, that work mat seat might need some extra padding though .......
After that "spirited run" I as greeted by a bit of an ooze......................so only one thing for it.........
.......After that "spirited run" I as greeted by a bit of an ooze
......................so only one thing for it.........
lchris21
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First investigation indicates a common fault with them, the head gasket loosens over time and leaks oil on the return gallery .....tried re-torquing it but no joy. So whilst Im in there I'll change the rings, as the oil scrapers are on the limit, the bores are good so just a hone for them, the front cam chain guide (another achillies heel of the design) had made a break for it so that needs attention, plus the two inlet valves are a bit too worn on the tappet end so Ive ordered a couple of those.............this oil leak has got a bit more serious ....................but what else can you do in lockdown. Pain in the rear, but at least it should run better.........plus like most Im holed up going nowhere, and currently nursing a couple of broken ribs from a bicycle smash a few days ago, hence Im sat here uploading on the forum..........and what better therapy during these times than decarbonising an old engine
.....tried re-torquing it but no joy. So whilst Im in there I'll change the rings, as the oil scrapers are on the limit, the bores are good so just a hone for them, the front cam chain guide (another achillies heel of the design) had made a break for it so that needs attention, plus the two inlet valves are a bit too worn on the tappet end so Ive ordered a couple of those.............this oil leak has got a bit more serious ....................but what else can you do in lockdown. Pain in the rear, but at least it should run better.........plus like most Im holed up going nowhere, and currently nursing a couple of broken ribs from a bicycle smash a few days ago, hence Im sat here uploading on the forum..........and what better therapy during these times than decarbonising an old engine 