jonw
Retro Fitter
Posts: 145
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Post by jonw on Jun 21, 2012 9:27:42 GMT
Nice bike.... gotta love the communist era 2-strokes!!!
That black stuff is oil..... probably out of the box assuming that yours is a pre-mix.
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Post by dungbug on Jun 21, 2012 11:18:31 GMT
Nice little project, certainly not something you see everyday. Electrics shouldn't prove too much of an issue, start with the basics, check fuse, earth points etc. At least it's been stored in a garage so any crusty stuff should be minimal.
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Post by fairway1987 on Jun 21, 2012 19:02:36 GMT
Thanks, I strongly suspected that. I've managed to misplace either a gasket or some big washer that fits where the exhaust screws into the side of the cylinder so it's spitting smoke out from there & this must be where this black oil is dribbling from. It leaves a puddle where ever I stand it with the engine running. Must sort out another exhaust gasket / seal before it goes for test.
What 2 stroke oil would you recommend I use? I'm currently using Tescos own brand of 2 stroke oil at just £3.40 for a 1L bottle 'Every Little Helps'. I didn't see the point in buying expensive Castrol or Shell brand oil thats only going to get partially burned then spat out of the exhaust?
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Post by fairway1987 on Jun 21, 2012 19:16:39 GMT
Nice little project, certainly not something you see everyday. Electrics shouldn't prove too much of an issue, start with the basics, check fuse, earth points etc. At least it's been stored in a garage so any crusty stuff should be minimal. Thanks Dungbug! Yes, to say the electrics are basic would be an understatement. There isn't even an electric start (it's kick start only). There is no battery either, on the off side of the engine is a generator / dynamo which kicks out a truly whopping '6 - 8v by 2,000 - 6,000rpm' according to the handbook. The main loom simply unplugged from the bike when I removed the engine, but I had to unscrew the earth wire & my investigation into the electrics will start here incase that wire was brittle & broke after being disturbed (to be fair it is in a vulnerable position) or the connection is not good after after my reassembly.
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Post by dungbug on Jun 21, 2012 22:04:50 GMT
Don't knock having a kickstart, whoever decided to take them off of bikes needs a slap, I prefer a kickstart personally. ;D
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Post by TerraRoot on Jun 22, 2012 6:30:47 GMT
What 2 stroke oil would you recommend I use? I'm currently using Tescos own brand of 2 stroke oil at just £3.40 for a 1L bottle 'Every Little Helps'. I didn't see the point in buying expensive Castrol or Shell brand oil thats only going to get partially burned then spat out of the exhaust? the black stuff is spooge (technical term), it comes from not quite burning what i can only describe as the most unsuitable two stroke oil you can possibly buy. get some proper semi-synthetic, and run it at about 3% there will be hardly any smoke (even better at 2% and fully-synthetic). the oil is the important bit you can't skimp on with two-strokes, it's the life blood. gtg now, work is calling, talk more later.
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jonw
Retro Fitter
Posts: 145
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Post by jonw on Jun 22, 2012 7:21:03 GMT
Don't knock having a kickstart, whoever decided to take them off of bikes needs a slap, I prefer a kickstart personally. ;D Agreed. I've spent several cold mornings trying to bump a bike with a flat battery and cursing the lack of a kick start.
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jonw
Retro Fitter
Posts: 145
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Post by jonw on Jun 22, 2012 7:24:58 GMT
Nice little project, certainly not something you see everyday. Electrics shouldn't prove too much of an issue, start with the basics, check fuse, earth points etc. At least it's been stored in a garage so any crusty stuff should be minimal. Thanks Dungbug! Yes, to say the electrics are basic would be an understatement. There isn't even an electric start (it's kick start only). There is no battery either, on the off side of the engine is a generator / dynamo which kicks out a truly whopping '6 - 8v by 2,000 - 6,000rpm' according to the handbook. The main loom simply unplugged from the bike when I removed the engine, but I had to unscrew the earth wire & my investigation into the electrics will start here incase that wire was brittle & broke after being disturbed (to be fair it is in a vulnerable position) or the connection is not good after after my reassembly. You'll need a battery as this acts as the DC smoothing capacitor. The desctiption you give makes it sound very similar to the electrics on my Tiger cub. Check you have a working generator, than move to the output of the recifier then on to the ignition circuits. It sounds like the main feed for the auxilliary circuits is awol but this is only a guess.
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Post by dungbug on Jun 22, 2012 9:16:38 GMT
Don't knock having a kickstart, whoever decided to take them off of bikes needs a slap, I prefer a kickstart personally. ;D Agreed. I've spent several cold mornings trying to bump a bike with a flat battery and cursing the lack of a kick start. You & me both gent, poxy tempremental GN.
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Post by fairway1987 on Jun 22, 2012 15:04:09 GMT
What 2 stroke oil would you recommend I use? I'm currently using Tescos own brand of 2 stroke oil at just £3.40 for a 1L bottle 'Every Little Helps'. I didn't see the point in buying expensive Castrol or Shell brand oil thats only going to get partially burned then spat out of the exhaust? the black stuff is spooge (technical term), it comes from not quite burning what i can only describe as the most unsuitable two stroke oil you can possibly buy. get some proper semi-synthetic, and run it at about 3% there will be hardly any smoke (even better at 2% and fully-synthetic). the oil is the important bit you can't skimp on with two-strokes, it's the life blood. gtg now, work is calling, talk more later. Ah right OK, I'll see whats exactly on offer at my local bike shop & will deffinately get a better brand of oil and try that. If I'm honest the smoke it currently kicks out when it's running does take the piss, even for a 2 stroke it is excessive!! I don't understand what you mean by 3% for semi synth oil or 2% for fully synth oil. Do you mean a mixture of 30:1 semi synth or 20:1 for fully synth? Sorry to sound a bit stupid and ask again but this is my first ever pre-mix set up bike. Cheers
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Post by fairway1987 on Jun 22, 2012 15:06:47 GMT
Thanks Dungbug! Yes, to say the electrics are basic would be an understatement. There isn't even an electric start (it's kick start only). There is no battery either, on the off side of the engine is a generator / dynamo which kicks out a truly whopping '6 - 8v by 2,000 - 6,000rpm' according to the handbook. The main loom simply unplugged from the bike when I removed the engine, but I had to unscrew the earth wire & my investigation into the electrics will start here incase that wire was brittle & broke after being disturbed (to be fair it is in a vulnerable position) or the connection is not good after after my reassembly. You'll need a battery as this acts as the DC smoothing capacitor. The desctiption you give makes it sound very similar to the electrics on my Tiger cub. Check you have a working generator, than move to the output of the recifier then on to the ignition circuits. It sounds like the main feed for the auxilliary circuits is awol but this is only a guess. I'll get some pics up of the electrical system this evening. Watch this space
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Post by fairway1987 on Jun 22, 2012 17:50:39 GMT
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Post by fairway1987 on Jun 22, 2012 18:06:48 GMT
The earth lead is right on top of the crank case. I can't see anything loose or untoward with the wiring anywhere & I was given the impression the electrical system was fine (the seller was trustworthy). Perhaps there is some corrosion or dust on one of the contacts or one of the magnets in the generator / dynamo? It's such a simple system the problem is possibly staring me in the face & I just havn't seen it yet. I believe this handbook is from a slightly earlier model so there may be one or two tiny discrepencies between it and my bike, but the diagram may still be usefull.
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Post by TerraRoot on Jun 22, 2012 20:48:56 GMT
2% is 50:1 or 100:2(%), go with what ever the oil ratio the oil wants to be at, so if its semi to do it's job it might need a 40:1 ratio (2.5%) or 30:1(3.3%)
chainsaw fully synthetic might be ok for your under stressed engine if you can't find premix two stroke, injector two stroke is too thick and will muck up the fuel jetting.
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Post by fairway1987 on Jun 22, 2012 23:17:45 GMT
2% is 50:1 or 100:2(%), go with what ever the oil ratio the oil wants to be at, so if its semi to do it's job it might need a 40:1 ratio (2.5%) or 30:1(3.3%) chainsaw fully synthetic might be ok for your under stressed engine if you can't find premix two stroke, injector two stroke is too thick and will muck up the fuel jetting. Ah right ok, my handbook says it needs 25:1 for the first 500 miles (because the engine is new/reconditioned) then afterwards drop it to a 20:1 mix. I'll do some shopping around tomorrow and see what is exactly on offer pre-mix oil wise to me locally. I have at least 3 motorbike repair shops, two big motor factors, a Halfords and a B&Q all within a 20min walking distance of my flat so I can check them all out and shop about. I'll not make the mistake of price over quality again! It's like the Hindenberg disaster all over again with the sheer amount of smoke my bike spits out when its running. And then it leaved little black puddles everywhere it's been stood.
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