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Messages - cee-b

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Singles / Re: Most suitable petrol for an M21?
« on: 20 April, 2022, 18:15:06 »

 Try a tank of super E10 and see if you notice a difference. 

Not wishiung to be rude, but there is no such fuel.

The super/premium/synergy/whatever else the company may choose to call it fuels are not E10. They are higher octane fuels with a MAX ethanol content of 5%. In much of the country they are 0% ethanol, but still designated E5.

I would advise the OP to disregard octane content (it is irrelevant for 'our' bikes) and read the threads regarding ethanol.

The Star and Garter / Re: E10 and spark plug grade
« on: 22 November, 2021, 20:41:34 »
Or just don't use E10 - isn't there enough about it on your other thread?

The Star and Garter / Re: E10 - Any feedback
« on: 20 October, 2021, 11:45:13 »
Ethanol has a higher octane rating, but marginally less energy by volume than petrol.

I don't believe that the difference in performance between 5% and 10% ethanol content will be noticeable; there may be a perception of a difference, but how real that is is debatable.

I think that the real issue is more about the damage that can be done to certain materials in older bikes/vehicles. The ethanol can attack:
Plastic & Rubber fuel lines
Gaskets & Seals
Fuel Primers
Fuel injectors
Composite Fuel Tanks

All of this is covered in the piece posted by Bess.

For the difference in price between E10 and Premium fuel with 0-5% ethanol, and the limited number of miles that classic vehicles do, I can't understand why anyone would use E10 in an old bike or vehicle.

The Star and Garter / Re: Grease in gearboxes
« on: 17 October, 2021, 17:24:15 »
This type of grease was available when the gearbox was designed.
It might be worth giving some thought as to why BSA didn't use or recommend it.

Yep, a bloody good point.

The grease does specify that it is suitable for 'gearboxes designed to operate with a semi-fluid grease' therefore, it is presumably not suitable for ones that weren't designed for it.

The Star and Garter / Re: GOV E10 checker
« on: 08 September, 2021, 18:02:00 »
Thank you bikerbob, a very learned appraisal of the effects of ethanol.
Like we saw when unleaded petrol was introduced, there has been a lot misinformation  spouted about E10 by supposed experts. I will print this off and use it to introduce some common sense into future conversations.

It is indeed an excellent article for what it covers. However, it doesn't cover everything and just because something isn't mentioned here that doesn't make it 'misinformation'.

It doesn't cover the corrosive effects of ethanol on certain metals, rubber and plastics. Nor does it cover the damage done by softening fibreglass in fuel tanks.

These effects are well documented by reliable sources. Triumph motorcycles, for instance, specifically state that E10 fuel is not compatible with the Sprint 1050 ST due to the fact that it will damage the tank. I'm inclined to think that Triumph qualify as genuine (as opposed to supposed) experts when talking about their own bikes.

The Star and Garter / Re: GOV E10 checker
« on: 04 September, 2021, 20:48:32 »
I certainly have had components, such as fuel cock seals, degrade due to the ethanol content in E5 petrol.

I don't see any point in trying E10; for the amount of miles my BSA does in a year, it isn't going to cost much to use Premium fuel which remains E5.

The Star and Garter / Re: Ethanol revisited
« on: 31 July, 2021, 20:42:38 »
Thanks Dave.

The Star and Garter / Re: Ethanol revisited
« on: 30 July, 2021, 17:42:20 »

Just read the article re ethanol in The Star.  Very informative and myth busting.  I was never concerned about ethanol but now even more relaxed.
So with E10, put some in, ride the bike and tweak accordingly.


Link please!

This might be a numpty question and, if so, please forgive my ignorance.

As long as there is still oil being supplied, what is the problem with starting the bike and letting it tick over? Won't that scavenge the oil back?

I have to presume there is more to it than that or it wouldn't be such a much-discussed issue.

The Star and Garter / Re: Ethanol revisited
« on: 28 July, 2021, 15:29:34 »
In a few foreign places my old clunkers have run fine on some right royal crap, so am I worried about E10? am I **** !!

Running on 'right royal crap' is one thing. It may be low octane and it may have impurities, but it doesn't (generally) contain anything corrosive to components.

Ethyl Alcohol (Ethanol) IS corrosive to a number of components in older vehicles/bikes.

I have already had/have got problems from using E5 fuel. Seals have begun to leak and needed replacing on my BSA, the fuel tank has actually swollen and is now difficult to refit on my Montesa 315.

I will paying a few bob more and putting Premium grade fuel in all my bikes; not for the extra octane, but because it remains E5 not E10.

The Star and Garter / Re: Ethanol revisited
« on: 27 July, 2021, 19:41:45 »
I agree chaz, we don't even get the E10 until September this year.

It MUST be in by Sept, some outlets here in Devon have already introduced E10. One of them is Tesco so, presumably, Tesco in other parts of the country will have done the same.

Singles / Re: C15T gearbox oil quantity
« on: 15 June, 2021, 09:14:50 »
Did you empty all the original oil out?

Yes I did.

I was surprised at how little came out and thought it must have been leaking. However, it is likely that it had just been topped up to the level plug not filled with a measured amount

Singles / C15T gearbox oil quantity
« on: 13 June, 2021, 18:37:05 »
I have just changed the gear oil on my C15T.

I was expecting to put in half a pint, but the oil started running out of the level plug at approx 150mls - roughly quarter of a pint.

This seems like a piddling amount of gear oil (particularly in a bike not exactly renowned for hanging on to every drop of oil that is put into it!)

Any ideas on why it might take so little? The level/drain plug was fitted by the previous owner - does anyone know whether there are plugs that fit, but are set to a different level?


The Star and Garter / Re: Soldering flux
« on: 01 April, 2021, 19:31:53 »
Put some flux on a dirty coin and leave it overnight ACID !

It cleans it up. A bit like a popular fizzy drink then, or lemon juice, or baking soda - are they all ACID? ::)

The Star and Garter / Re: LEAD FREE PETROL
« on: 19 March, 2021, 17:19:40 »
I will post here rather than the ethanol thread, the chainsaw that wouldnt start last week had lost its fuel when I tried this afternoon. I used more of the old mix and found I had a couple of cans of Silkolene ProBoost, octane improver. I used some pro boost in with the old fuel and the saw started . It runs for a while but trying to use throttle it tends to cut so assumeing the proboost has upped the old fuel octane it looks like its a carb clean needed.. even smaller than a 125 carb, I hate them, too small.

If it dies when you try to rev it, it might be worth checking that the fuel filter is clean before stripping the carb.

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