Monday, 23 January 2017

Gravity and Accelerating Universal Expansion by Peter Noble

 Gravity and Accelerating Universal Expansion by Peter Noble

This theory came to me in the bath, so it must be right right. It offers meanderings on gravity and universal expansion.

It’s pretty much accepted that time and space are indivisible and should be considered as single fabric called space-time. The faster you travel in space the slower you travel in time with the total never exceeding the speed of light C. 

The universe is expanding. It would like to expand at the speed of light but that’s tricky because whilst it is easy for light and radiation to travel at C its not so easy to get things like pencil sharpeners and planets to whistle along so fast. The expanding wave front of the universe (we call it the present) is made uneven by the fact that matter just cannot keep up with energy. The effect that a concentration of matter has on the space-time that surrounds it is to act as drag on its expansion. That drag manifests as gravity

In the case of black holes the drag is so great that there is simply no possibility of anything within the event horizon of the black hole ever reconnecting with the expanding wave front of the universe.

Why is universal expansion accelerating? As time passes matter degrades to radiation of various forms. There are no circumstances where radiation degrades to become matter. It’s a one way trip with a huge exchange ratio E=MC2. A tiny amount of matter yields a whole lot of radiation. As the universe ages, the balance of matter and energy tips, always in favour of energy and energy travels at or around C. Thus the brake put on Universal expansion by matter is being eroded and the universe expands faster and faster eventual reaching C when all the matter is degraded to energy.

If there’s any gluten and dairy free biccies with that Nobel prize it would be nice.

for further ponderings on the imponderable try this:

Sunday, 18 August 2013

Tweaking the Victron to work with a generator ( The experiences of boater Mike Christian)

Sometimes you can can plug your generator into a Victron inverter/ charger and everything is rosy. Other times you need to tweak the software to let the Victron know what its dealing with. Below is a letter from  one of my customers who has done battle with the Victron Multiplus and emerged victorious. Many thanks to Mike Christian.

Hi Pete,

Good to hear from you again. I have been meaning to email you about the final way of resolving my woes with the ongoing battle between our genny and the Victron. After contemplating buying the remote control relay from you and believing that I had cracked the 'clicking' of the transfer relay in the unit, it began again!

I became despondent after selling my cheap generic Chinese generator to a fellow boater who was more than pleased with its output via his inverter/charger, then my posh Honda started its tricks once more, or should I say the Victron did.

Interrogating the charger once more with that brilliant software, I recapped all of the alterations I had made to the parameters etc., Prudently, I had created a file on the PC listing historic amendments from the previous occasions where I would tweak one or more of the settings relating to generator input, noting the response from the inverter/charger after each respective amendment. I thought that I had cracked the problem in ticking the check box Dynamic Current Limiter, which from memory accommodated various current fluctuations from the genny's output. This worked for one day, then the clicking returned.

Reverting everything back to default settings, bar the battery type designation, I resigned myself to plodding on with the installation of our Fischer-Panda on board diesel genny and selling the Honda back on Ebay.

Out of curiosity, I checked back on the historic records to investigate if there was anything that I'd neglected to change and to my frustration, discovered that the one setting that I ignored was that of 'Weak AC Input'. Why, I thought would I need to tick this check box when I have this Rolls Royce generator that surely would not have such an issue. Wrong! Once I altered this setting all was good in the world and has been ever since. I was convinced that if the Chinese genny didn't require this option to energise the charger, then why should the real deal Honda need it.

Anyway, that solved the problem and if this long winded account of 'taking things for granted' helps your customers resolve any of their genny problems, then my trials will have been worth the effort.

Tuesday, 23 July 2013

Sudden and total loss of residual magnetism in the rotor of a Honda EM4500 by Peter Noble

I had a call from a guy whose AVR generator had suddenly stopped putting out power. I went through the usual fault finding steps over the phone, including testing the stator resistances and connecting a battery to the brushes to flash the field. Flashing the field made voltage appear at the outputs but with the AVR reconnected the output still failed to appear. I concluded that the AVR was at fault and I supplied a replacement. However upon fitting the new AVR the problem persisted.

I was starting to suspect that the winding that drives the AVR had failed.  I asked him to flash the field again but this time for 10 seconds. This time it did the trick and everything sparked into life. So I conclude that the rotor had been completely demagnetised . Some loss of residual magnetism is not uncommon in machines that have stood idle for a long time but I have not seen many instances where one day the machine is generating and next day the magnetism has gone altogether.

After some pondering, I came to the conclusion that the load (an electric drill) was not disconnected when the generator was stopped. The motor of the drill had completely demagnstised the generator rotor as it freewheeled to a stop. Electric drills are sometimes used to restore residual magnetism in generators but if turned in the wrong direction they will have the opposite effect.

Well that's my theory. What do you think?

The moral of the story is : Disconnect the load before you switch off the generator.

Sunday, 14 July 2013

Should I use the DC output of my generator to charge my leisure battery. by Peter Noble

If the choice is between using the DC output on the genny and having a flat battery then the answer is maybe.

If the choice is between a proper power factor corrected 240v charger and the DC genny output then No No No!.

Proper PF corrected chargers like the Victron, Mastervolt etc etc are a zillion times more efficient at charging your battery. The amount of charge achieved per litre of fuel used is far greater than the generator's DC output can achieve and a proper charger is going to be more sympatico to the needs and condition of your batteries. Add to that the fact that you are running the generator engine whether you use the Dc output or plug a proper charger into the 240V.

So if you are stuck in the middle of the Gobi desert and need to charge your battery so you can radio for help and the only means of doing so is the DC output on a generator. Consider using smoke signals whilst you wait for the battery to charge.

Saturday, 13 July 2013

Generators and Browns gas. Is it just a perpetual motion machine? by Peter Noble

I have had a few customers now who are trying to convert generators to run on Browns gas. Browns gas is the unreacted hydrogen and oxygen mix that results from electrolysis such as battery charging or more efficiently, a fuel cell. Clearly its not as easy to run from Browns gas as LPG but with a bit of tweaking a Honda GX series engine will run. However the question is. Is it worth it?

 I have one customer who had invested considerable time and effort into a system to run a fuel cell from the output of a generator running on Browns gas. They believe that they will be able to produce a surplus of Browns gas over and above that used to power the fuel cell. On the face of it and with my fairly basic understanding of things this seems highly unlikely. I would have thought that it would be physically impossible to produce an amount of Browns gas that exceeds the amount required to produce it.

If anyone has any thought or experience in this area I would be interested to hear them.

Check out my website for Honda generator sales repairs and LPG conversions

Friday, 12 July 2013

Concerned about valve burn on LPG converted generator engines? by Peter Noble

Its something that people tend to be concerned about. My experience is that if the gas conversion is properly set up with the correct jetting then its a bit of a non issue. Nevertheless I can see some instances where it would be a concern and most particularly on the Honda EU10i. The engines on these are pretty light duty anyway so if a gas conversion is likely to accelerate the wear on anything then its that little unlined GXH50 engine.

Recently I converted the much tougher Honda EU20i for a customer to use with his motorhome. The customer, Chris, is a bit of an engineering buff anyway and loves a project. Anyway he had read all there was to read on LPG conversions and the possible effect on top end engine wear. He found a product that overcomes the issue of  valve burn and also improves upper cylinder lube. It is basically a drip fed additive that is introduced at the carb manifold via a very thin pipe. The venturi effect draws the additive into the air stream and a valve controls the dose rate. Chris fitted the arrangement himself and he felt that the generator ran more smoothly and reacted more positively to shock loads as result. He sent me a few pics. Below.

Here you can see the additive and the feed tank complete with flow control valve

And another from a different manufacturer

He drilled a hole in the plastic carb manifold/insulator to introduce the additive into the air stream

He used the hole in the skirt where the carb overflow pipe used to be as an entry point for the additive pipe

The supply comes into the case and connects to the small (2mm diameter) brass pipe in the manifold.
Check out my website for generator repairs and LPG conversions

Tuesday, 3 July 2012

modifying 125w mercury vapour lamps to run on the Honda EX350 inverter generator. by Peter Noble

Modifying 125w mercury vapour lamp to run on the Honda EX350 generator for Moth men (entomologists)

Changing the power correction capacitor in the lamp to a higher quality paper capacitor will enable it to run from the super lightweight 8.5kg Honda EX350 generator. The capacitors can be obtained from :

Paul Butty

or telephone 01909565564

Check out my website for Honda generator part repairs and troubleshooting tips