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Happyoldgit last won the day on September 12

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About Happyoldgit

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  1. If the queues at all the service stations I have seen around here are anything to go by it would appear that the media has convinced gullible Joe Public that the end of the world is nigh in terms of deliveries of petrol and diesel are concerned.
  2. This has done the rounds some old vehicle groups to which I belong just recently. I take no credit for it whatsoever. Now I am no expert on these matters so if this contains iffy information please don't have a go at me... The great Ethanol debate: A question that is constantly being asked right now, particularly with the introduction of E10, is whether Ethanol based fuel will harm my bike? As a previous industrial chemist and owner of several classic bikes and cars I decided to address this controversial subject and provide answers to many of the questions being asked. Hopefully, this will lead to an explanation on the consequences of using Ethanol based fuel and address what changes need to be made and what don’t. Using Ethanol based fuel basically comes down to a case of damage limitation. Some of the questions being asked right now include: Will Ethanol based fuel corrode my fuel tank? Will Ethanol based fuel corrode my carburettor? Will Ethanol based fuel attack my fuel pipes? Will Ethanol based fuel attack rubber seals and gaskets? Does 2 stroke oil mix properly with Ethanol based fuels? Does Ethanol based fuel increase the risk of engine seizures? Does Ethanol based fuel give the same performance as non-Ethanol based fuel? How long can Ethanol based fuels be stored for? Will a fuel stabiliser work to prevent moisture absorption and increase storage life? Can Ethanol be removed from fuel? Are there any non-Ethanol fuels still available? The main problem with Ethanol is that it is hygroscopic which means that it has an affinity to absorb moisture from the air. It is this water that causes the ensuing damage since it will, over time, corrode many of the metal parts it comes into contact with. Needless to say, the actual conditions required for the fuel to absorb significant levels of moisture must be considered. The greater the headspace in the fuel tank, the greater the chance of moisture absorption due to increased surface area of exposed fuel. Remember that fuel tanks are essentially vented to atmosphere, as are gravity fed motorcycle carburettors. Moreover, the higher the relative humidity, the greater the chance of moisture absorption. Excessive fluctuations in air temperature can also cause condensation to form which is quickly absorbed by the Ethanol. The best way to reduce moisture absorption to an absolute minimum is therefore to keep the tank topped up to the brim wherever possible and avoid exposure to severe temperature fluctuations. Keeping the bike under cover helps significantly here. Now onto the damage caused by absorbed moisture in the fuel. The main question is whether the absorbed moisture causes corrosion of metal parts? If the fuel is used before moisture build up becomes significant then corrosion damage is unlikely. However, if the fuel is left for any length of time then excessive moisture build up will start to cause corrosion damage particularly to steel and aluminium parts. Fuel tanks, fuel taps and carburettors are the main problems here and it is not uncommon to witness significant corrosion of carburettor internals when left standing over time containing Ethanol based fuels. Soldered components such as carburettor floats are also quite vulnerable. Ethanol based fuels should be used within a couple of months at the very most and drained from the tank and carburettors if left any longer than this. In any event, modern fuels do not store very well since the octane rating deteriorates if left for any longer than this. Ethanol based fuels are also more unstable than non-Ethanol fuels. Now onto rubber components. The term rubber is a bit of a misnomer. Seals, gaskets and pipes are made from a wide range of elastomers including Nitrile (Buna N), Neoprene, EPDM, Viton etc. etc. and this is where the problem lies. Whilst some elastomers exhibit very good resistance to Ethanol, many do not. Generally, motorcycle fuel pipes are made from neoprene which is extremely resistant to Ethanol so no problem there. However, many seals and gaskets are made from Nitrile (Buna N) which has very poor resistance to Ethanol. Ethanol can cause these seals and gaskets to swell over time whilst some elastomers can become quite brittle. It’s best to swap out any problematic seals and gaskets in the fuel system (taps, carburettors etc.) for a more resistant material, though this is easier said than done since many manufacturers and OEM’s do not state what material has been used in the manufacture of these items. This is a difficult one and it’s often a case of suck it and see. If Ethanol based fuels appear to be causing problems with seals and gaskets it’s best to replace the affected items then avoid Ethanol based fuels altogether. Unless, of course you can identify and obtain Ethanol resistant seals and gaskets made from more resilient materials which exhibit very good resistance to Ethanol. Most modern engine and fuel systems (post 2000) have already been manufactured incorporating seals and gaskets made from more resilient materials. A popular misconception about Ethanol based fuels is that they can increase the risk of engine seizure. There is no real credible evidence that Ethanol based fuels increase the risk of seizure despite the fact that a 10% Ethanol addition will have a slight (2.6%) leaning effect. Moreover, 2 stroke oils mix with Ethanol based fuels just as well as they do with non-Ethanol fuels. The idea that Ethanol based fuels can contribute to engine seizure is a myth that should be ignored. However, it should be noted that the calorific value (energy content) of Ethanol is less than that of Petrol so we can expect a small difference in performance when using Ethanol based fuels though hardly significant with 10% Ethanol (E10). In some countries like Australia where 85% Ethanol (E85) fuels exist this has become more of an issue but UK fuels currently contain a maximum of 10% Ethanol so not really an issue. Another common question is whether a fuel stabiliser will work to prevent moisture absorption and increase storage life? In a nutshell, No. Fuel stabilisers do not work to prevent moisture absorption and do very little to retain the octane rating of a fuel during long term storage. Stay away from them, you are wasting your money! There are some people out there suggesting that Ethanol can be removed from fuel by mixing water with the fuel to soak up the Ethanol and subsequently draining off the remaining fuel layer. This does actually work but it’s all a bit of a faff and then there’s the issue of disposing of the remaining Ethanol/water mixture safely. It’s better to try and source a non-Ethanol based fuel in the first place such as Esso Synergy Supreme+ Unleaded 97 or Synergy Supreme+ 99. These are still to be made available in the UK so I am told. Although the forecourt pumps have E5 labels on them, Esso Synergy Supreme+ 99 is actually Ethanol free (except in Devon, Cornwall, North Wales, North England and Scotland). Also, Super Unleaded will still be available for another 5 years which contains only (upto) 5% Ethanol. The less Ethanol the better. I think we’re getting the picture now. Another option, should an owner wish to keep a bike fuelled up during longer term storage is to consider filling up with an Alkylate fuel which is Ethanol free and is very stable during long term storage. This is available and sold under the brand name Aspen in the UK and whilst it does work well it is very expensive. Indeed, there are definite consequences when using Ethanol based fuel in older engines. In summary I would recommend using non-Ethanol based fuel where available or look out for Super Unleaded which contains only 5% Ethanol. Where it is not available, I would recommend that anyone using Ethanol based fuel keep it in the tank only during the active season when the bike is frequently being started and run to ensure that the fuel does not stay for too long in the bike. All the while, keep a watchful eye on any seals and gaskets within the fuel system and ensure that fuel pipes are made from neoprene. It’s easy enough to source neoprene fuel pipe and it’s not expensive. When the time comes to lay the bike up, ensure that all Ethanol based fuels are drained from the tank and carburettors and flush them through with paraffin. It is the lesser of two evils since fuel taps and carburettors are best stored filled with fuel to prevent seals from drying out but not with Ethanol based fuels. If possible, fill the tank with enough Alkylate (Aspen) fuel just to be able to flood the fuel tap and carburettor for Winter storage. Other than that, a light coating of 2 stroke oil mixed with a little paraffin can be used to coat the inside of the fuel tank to prevent corrosion.
  3. I don't watch Top Gear, stopped it when the three clowns turned it into a comedy show. Our views on the vocal attributes of the chap in the video obviously differ, you have your views, I have mine 🙂
  4. Hmmmmmm. Those that passed even the most rigorous test can still lack common sense / act impulsively at times. A qualification does not guarantee perfect performance and behaviour for evermore.
  5. I see what you mean. Tall, thin, husky voice, lots of waving about of oversize hands. Like a big praying mantis.
  6. Trucks have to be plated annually but trailers are fair game for the ignorant and risk takers but I can't imagine many doting equine owners wanting to knowingly put their animals at risk but ignorance is bliss in all walks of life. I suppose we could pick holes on any segment of the motoring population, the number of shagged out Disco 1's I see trundling about around this area complete with under chassis and steering guards oversize wheels and tyres, snorkel, umpteen lights on the roof and exhausts belching black smoke as they accelerate and stickers with the usual one life BS all over the shop towing equally dodgy trailers and caravans is alarming.
  7. Nice! I have three English Springer Spaniels but also owned and worked Labradors for many years so this hangs on one of our walls
  8. I have held a licence since the mid 1970's and towed all sorts with all sorts. Now that my personal background is out of the way I can get on to my point of this post... I was listening to Any Answers on R4 this afternoon and the subject of the shortage of HGV drivers came up, several callers were HGV qualified themselves and most made the point that the industry is mostly made up of middle aged or older males, that poor wages had forced many to move into better remunerated, less stressful professions that offer nicer working conditions and less antisocial hours away from families. Low wages had caused the industry to take advantage and employ drivers from less well paid EU countries who were happy to accept what was essentially better pay in the UK than they could earn at home. Many of these foreign drivers had returned home as a result of the UK leaving the EU. These were the views of those who had called in who have worked in the industry for years.
  9. Tidying up the workshop come garage I found.... ROVER AUSTRALIA PTY. LTD
  10. End of an era indeed 😔 Please don't be a stranger here Mike.
  11. I had one that I took off the original bonnet of the 127 ambulance I converted into a camper years ago. I had a better, straighter bonnet that I sprayed up and fitted and never replaced the badge. I'll have to have a rummage to see if I still have it but in reality it probably went into one of the many clear-out skips I had when we sold that place and bought this one.
  12. Oh God, just seen another one driving through my local town. That's the second I've seen around here, standards are slipping! What a bland looking vehicle.
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