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Messages - petrolderek

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1
British Bikes / Re: British motorcycle charitable trust
« on: July 04, 2018, 10:12:37 PM »
The only event we have in the real North (Lancashire ) is Garstang autojumble once a month in summer but they all start packing up at mid day so its hardly worth going but it dose go dark a lot earlier up here.

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British Bikes / Re: British motorcycle charitable trust
« on: July 03, 2018, 01:39:10 PM »
As far as I am aware there is nothing north of Birmingham worth going to. If you know any different let me know.

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British Bikes / Re: British motorcycle charitable trust
« on: July 03, 2018, 12:34:57 AM »
So nothing up north then. There never is.

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British Bikes / Re: Losing power when in high gears
« on: July 01, 2018, 10:41:49 PM »
This is interesting it dose sound like a gearing problem. You say it was fine and its only just started with this problem. You also say you have just fitted a new rear tyre. Did the problem only start after the new tyre was fitted. If so have you checked the size of the new tyre, is the circumference  the same some tyres have a taller side wall this could have the effect of raising the gearing. Think back to when the problem started what did you do to the bike just before the problem started and work from there. The most difficult faults to sort are the ones that someone has put on ie changing a component for an incorrect one or not fitting it correctly.

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Japanese Bikes / Re: spark plugs
« on: June 25, 2018, 12:30:01 PM »
I have just read the article I think it should say more leakage occurs not less leakage.

And when the green spark plug company said you fitted the plug in a cold engine they must have been referring to the mixture being too rich and not the actual temperature of the engine because it make no sense otherwise.

Its occurred to me that the plugs have never failed while the engine was running its always when the engine has been left for a few days and the engine is cold and it doesn't start, could it be putting the choke on wets the plug. The Yamaha was running fine when I stopped it but two days later it wouldn't start due to the plug. I don't remember having these problems back in the day.

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Japanese Bikes / Re: spark plugs
« on: June 24, 2018, 06:06:49 PM »
This is interesting. These plugs were NGK and have been "wetted" a few times, I had a contact breaker fault then found that at some time it had been fitted with some under size rings so the engine has been flooded a few times. I have never herd of this wetting issue before. So just drying them out doesn't  work. I am going to have to take the carbs off again and fit some new float valves to stop it flooding or I am going to be knee deep in spark plugs.

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Japanese Bikes / spark plugs
« on: June 23, 2018, 07:45:43 PM »
Has anyone else had any problems with new spark plugs. I have worked with engines all my life and am now retired so I have had quite a bit of experience but in the past few years I have had loads of problems with new plugs breaking down. I have a 305 dream and its on its third set of new plugs and its not done 100 miles. Today I started my Yamaha yds5 and it was misfiring on the right cylinder checked the plug and there was no spark changed the plug for one that was in the bike when I got it that must be 30 years old and its fine. These plugs in the Yamaha were new a month ago. Checked the plugs resistance and its showing 30k but the old ones show OL. So what's happening any ides the only thing I can think of is I have had them in and out quite a few times when I had a piston ring problem could it be taking them out when hot or just handling them is causing the problem.

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Japanese Bikes / Re: yamaha ds5 engine
« on: May 30, 2018, 09:22:29 PM »
The classic bike scene will gradually fade away due to the lack of interest by the youth of today. You only have to go to bike shows and jumbles the vast majority are grey haired when this lot get too old to be bothered whats going to happen to all this over restored stuff I don't know because the younger ones don't have the knowledge or interest to keep them running.

I did some volunteering last year on a project targeted at disadvantaged kids and young adults. The idea was to get them off the streets get them interested in go kart racing and maintaining the karts. I helped with the maintenance of the karts and training the kids to do their own maintenance. It would have been easier to train a group of monkeys. They would drive the wheels off them but as soon as they broke down they immediately lost interest. I give up.

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British Bikes / Re: The price of classic bikes is it healthy
« on: May 30, 2018, 07:15:25 PM »
bike before restoration

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British Bikes / Re: The price of classic bikes is it healthy
« on: May 30, 2018, 07:11:58 PM »
I have just been on ebay and been looking at "well known dealer " BSA bantam bushman 5500 another dealer Greeves trials 6250.00. What!!! I used to buy bikes in bits bikes that have been dismantled and then left ( that's another mystery to me why strip them down then leave them until half of its gone missing before selling it )anywhoo I like to put them back together not over restore them get them running and then get something else but I have moved over to the dark side and been getting these USA Jap imports, it pains me but I have got to say the bikes are cheaper  to buy in far better condition generally easier to get parts and they are desirable. I don't do it for the money but I don't loose money either its just my hobby better than watching the crap telly. Three years ago I bought a Honda 305 Dream for 275 from a dealer!!! on ebay it looked like it had come out of a canal. It was seized the petrol tank and swinging arm had rotted through in four months in was on the road the only parts I struggled with was the speedo and the carb covers everything else I got either used or new. Its my rider bike now.

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British Bikes / The price of classic bikes is it healthy
« on: May 30, 2018, 04:38:24 PM »
What dose everyone think. There doesn't seem to be any end to the rise in asking prices for classic bikes. Personally I don't think its healthy for the interest or sport or hobby or whatever you might call it. It almost as though everyone wants to be a dealer not really interested in the machine just buying one to sell later for a profit. I don't suppose there is anything wrong with that but at some point its going to end in tears it cant go on. At some point possibly when the interest rates go up prices will crash when the speculators sell them off and put their money back into the banks. Its happened before then common sense will prevail ( hopefully )

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Japanese Bikes / Re: yamaha ds5 engine
« on: May 29, 2018, 07:48:48 PM »
I bought the ysd6 on ebay and when I went to collect it there was a really nice Suzuki GT250 as well so I brought them both home. I cleaned the carbs on the Suzuki cleaned the points lashed a battery on and it started first kick. This bike hadn't run for donkey's years I was amazed that's when it all went wrong. The daft vacuum fuel tap didn't work so I took it off and fitted a normal  one. The bike always started first kick but had a tendency to drip fuel from the left hand exhaust I made enquiries and was told by more than one that they all do this give it a good run it will clear. I went into the shed just after Christmas just to start the bikes and give them a run switch the Suzuki on kicked it it fired and immediately seized solid. I was mystified it didn't even start. Stripped it down and found it had bent a rod. I had left the fuel on it had flooded the engine with neat petrol and hydraulic locked and fired. The problem was the carbs had no overflow pipes on so if the float valve stuck it didn't leak on to the floor it just filled the engine with petrol and there was no drain plugs under the crank case. I rebuilt the engine, fitted some carbs with overflows and we parted company. Best Jap bike I have owned Honda cb500/4 most disappointing Yamaha dt125 would go rusty while you were looking at it and wouldn't pull me out of bed. I have a 65 Honda 305 dream which is brill.

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Japanese Bikes / Re: yamaha ds5 engine
« on: May 28, 2018, 12:45:49 AM »
If I am honest I don't mind whats wrong with them but not everyone has the ability to sort them out. I bought a really rough Honda CA77 dream ex USA again but it was cheap. Found it was seized as usual but this one was SEIZED SOLID. I have never had an engine piston seized as bad as this one. Took the heads off but the barrels would not budge. Any amount of heat, oil, coaxing, bashing made no difference There was no evidence of rust or corrosion and only one piston was tight. After two or three days it was time for it to relent so I drilled the piston from the top and drilled out the con rod the split the piston down from the inside it was only when it was completely split right down did it move and even then it was still very tight. The was no rust or signs or damage other that what I had done to get it out.
I happened on some barrels and pistons and put it all back together when it came to the ignition timing it was so far out its a miracle it ever run at all it must have overheated to the point of distorting the piston.

14
could be a engine,starter motor or a battery issue.
You need to isolate the fault.
 If you are confident the battery is good the starter motor could be pulling too much current and pulling the battery down under load.
 First dose the engine run ok when you can get it running if so its unlikely to be an engine problem.
What I would do is get a second battery and wire the ignition from the second battery and just use the bike battery to crank the engine and see what you get. If it starts and runs ok its a battery or starter issue if its the same its an engine issue.good luck.

15
Japanese Bikes / Re: yamaha ds5 engine
« on: May 26, 2018, 01:40:19 PM »
The ds5 is sorted. Looks like when I fitted new rings I only fitted one ring to replace the one I broke trying to un seize the rings from the piston. One ring was ok the other three had way too much gap so the three with too much gap were the originals . I cant believe that the originals were that worn because the bore isn't worn and its standard so the rings that were in must have been the wrong ones. That's possibly why the bike had been left unused for such a long time it wouldn't start or it had no power. Its not the first time I have bought one of these bikes from the USA that look in really good condition but haven't been used for years and according to the seller probably (only seized through standing) to find that there is a reason why they were left standing because they couldn't fix them. So be aware when you buy one of these you will need to check everything its not enough to just un seize them and clean the carbs out you will need to find the original reason why they were laid up.
 It runs great now and starts if you look at it. Happy days.

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