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Messages - Oggers

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British Bikes / Re: 55 Matchless G9 Dynamo exterior cork gasket
« on: May 26, 2019, 12:02:22 PM »

Noticed quite an oil leak coming from the dynamo and the timing cover mating faces. The gasket is of an annular type and of thick cork, and although seemingly not too bad, I have ordered replacements. The sealing seems to be done on the inner edge of the cork gasket and the dynamo "stub" end, and perhaps the vertical face of the dynamo - where there is no gasket.

Possible solutions - O ring instead of cork gasket?
Make up thin gasket for the vertical face?
Apply blue Hylomar or similar - in addition to the above.

Thoughts welcome.

Must admit I still have not looked at the crankcase breather valve  - on the crankshaft on the other side - as it it under the pressed steel primary chaincase and I don't really want to disturb it. I understand  pressure may be build up in the timing cover and blow things if this valve is u/s   

British Bikes / 61 Triumph T21 bathtub
« on: May 12, 2019, 04:21:32 PM »
One of these for sale locally. Good mechanical nick. Light blue paintwork good, silencers very good, matching numbers, bit let down by the rims being somewhat tarnished. A good one for an original resto I feel. 2700 should get it. Started first kick. Thoughts welcome....... 

British Bikes / Re: Timing cover leak
« on: May 03, 2019, 01:28:23 PM »
I shall run it again and see. I am assuming the initial problem was the joint wasn't great. If it leaks again from the same place now, then yes, breather diaphragm or something - I have already cleaned out the foam filter thing.  Already a member of AJSMOC - very good club, and have had some good responses.

Triumph refers to existing 66 Bonnie. 

British Bikes / Re: Timing cover leak
« on: May 03, 2019, 11:30:51 AM »

Pump return flow is fine back into the tank - so I assume no issues there. Pump is seperate gear arrangement for both supply and return. A swine for wet sumping....but that's another story.

PRV I believe just allows oil pressure to build up for onwards distribution? The piston and spring seem fine - so I assume unless it is relieving pressure, oil is going where required rather than into the timing case. Even if it did relieve, pressure within would be practically zero due to volumetric expansion, unless full of oil  :o!

It's an addition to the Triumph. Comparing and contrasting is quite interesting.   

British Bikes / Timing cover leak
« on: May 03, 2019, 09:36:19 AM »

Oil flowing out of the top edge of the mating suface twixt timing cover and crankcase. Oily right boot and gearlever ensued. Bike (59 Matchless G9) is newly overhauled - not by me - so currently cautiously riding around to establish confidence.

To remedy the above, cover removed, mating surfaces flattened as much as feasibly possible, screw holes deburred, flexoid gasket made, mating surfaces painted with Wellseal, Monograde 50 to be used intead of the previous 20/50. All now ready for test ride.


The leak was close to the oil pressure relief valve - spring and piston affair in the crankcase. Would there be any preponderance for a leak in this area? I am guessing that the void under the cover should not be pressurized.

Any thoughts as to root cause - apart from dodgy mating surfaces.

Many thanks


British Bikes / Re: 66 Triumph T100
« on: May 02, 2019, 10:53:14 AM »
I think you can still make a bit of money from a classic bike, providing one buys wisely in the first place - which clearly he didn't. It helps if you can read the obvious engine stamps! 

I am on the lookout for something to strip and restore, but thin on the ground. Perversely, basket cases are almost as much as the decent running bikes.....and yes Ian, I would like something a little different.   


British Bikes / Re: 66 Triumph T100
« on: May 02, 2019, 09:03:20 AM »
Update - viewed last night. Total waste of time. Frame clearly stamped T100S, engine clearly stamped 3TA, head looked like a 350 also. No spark when cranked and battery hooked up, needed paint/electrics and Lord knows what else as it didn't fire up. He was firm at 2850! - which as a decent 59 5TA just sold on Fleabay for 2800 is optimistic to say the least. 

British Bikes / Re: 66 Triumph T100
« on: May 01, 2019, 10:58:33 AM »

I am exactly with you there......The owner tells me he has simply given up on it. He has a modern T100 and cannot get on with the controls of the older bike, connot be bothered fixing it, basically wants rid. However, as you say if it was an easy fix, why not fix it and command a higher price....He did say it ran last summer.

Could all be genuine, could be big trouble....difficult to know without firing it up, but I quite like the look of it and the engines on these things are pretty solid I believe.

Non-matching numbers apparently.

British Bikes / 66 Triumph T100
« on: May 01, 2019, 09:41:48 AM »
One for sale close by. Tempting. Deos not run - I am told it did, but battery has died...hmmm, and when it did run, it was lumpy. Could be a relatively easy fix perhaps....It looks to be all there. Paintwork/chrome seems OK...could be a goer at 2500 notes.....

Thoughts welcome....

British Bikes / Re: Leaking primary chain cases
« on: March 04, 2019, 08:22:51 PM »
Just a thought on the primary chaincase. I am asssuming it is leaking from there - as when it was running, quite a quantity of oil dripped out (when the bike was stationary and presumably when running) in the vicinity of the lower portion of the chaincase and I have noticed a weep there beforehand. However, when left for a few minutes after running and when cold, there are no leaks at all.

I am wondering therefore if the leak is not from elsewhere - as if it were chaincase, would it not continue to drip?

I guess I can measure the level of oil inside and see if it is dropping......

British Bikes / Re: Leaking primary chain cases
« on: March 04, 2019, 01:59:08 PM »
Mini - I have it, and I am digesting. Very many thanks. To add to my woe, I also managed to mash the speedo drive this weekend, but therein is a whole different ballgame - I fear poor PO assembly........

British Bikes / Re: Leaking primary chain cases
« on: March 04, 2019, 12:53:12 PM »
Ian - I fear you may have a very good point! However, I'll remove it and have a look at the Buckingham seal you mention. Unsure why crankcase appears to be root cause - surely this is simply a case of the added chain bath lube oil just leaking out of the joint?   

British Bikes / Leaking primary chain cases
« on: March 04, 2019, 10:18:00 AM »

Matchless G9 appears to be leaking lube oil from the pressed steel primary chain case. Not a great design, held in place with a steel band/turnbuckle arrangement around the circuference. All ideas much appreciated - apart from the ususal gasket sealant - in order to impove matters.......

British Bikes / Re: Triumph TR 250 1971
« on: February 06, 2019, 09:52:33 AM »
I' m with Ian. Check main jet first. You need to remove it, blow it through, and ensure the hole is absolutely clear, not just clean the carb or spray the innards with cleaner. Also check float isn't sticking, float needle is not sticking, and float height is correct.

Afetr than - then yes air leaks  - nip up all flanges/gasket interfaces - check all hoses, and for any fuel filter blockage. Pull the fuel line off the tank and see if petrol flows correctly - could be full of gunge inside...... as could the fuel lines themselves.

British Bikes / Re: Auto advance
« on: January 30, 2019, 04:35:33 PM »
Heating up the plug(s) beforehand sometimes works - plus spraying petrol directly into the carb just beore starting....

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