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trebuchet
A trebuchet (French: trébuchet) is a type of catapult that uses a long arm to throw a projectile. It was a common powerful siege engine until the advent of gunpowder. The design of a trebuchet allows it to launch projectiles of greater weights further distances than that of a traditional catapult.
There are two main types of trebuchets. The first is the traction trebuchet, or mangonel, which uses manpower to swing the arm. It first appeared in China in the 4th century BC. Carried westward by the Avars, the technology was adopted by the Byzantines in the late 6th century AD and by their neighbors in the following centuries.
The later, and often larger and more powerful, counterweight trebuchet, also known as the counterpoise trebuchet, uses a counterweight to swing the arm. It appeared in both Christian and Muslim lands around the Mediterranean in the 12th century, and was carried back to China by the Mongols in the 13th century.
I have had a few issues recently with my boiler (see my previous threads) but the one which is niggling me most is a trv I have fitted onto a new radiator. Essentially, I have replaced an old radiator with a new slightly larger radiator. The old one worked perfectly. When the heating kicks in...
Hi everyone ,
looking for some advice
Ive got a back boiler set up and last week when i clicked my thermostat on to call for heating the programmer went bang , I have had that replaced with exact same model and still no heating , I have joined the thermostat 2 wires together to eliminate...
ziggyboy
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Hi all, advice appreciated!
Our bathroom needs updating, we're unsure wether to move our soil pipe. The previous owners built a carport with two bedrooms above it. The extension was built around the soil pipe which was the original outside wall (if that makes sense). So half of the soil pipe...
Carly123
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Dear All.
I fully appreciate that the real answer to this question is to repipe the system with two pipes. This would be something that I would plan for next summer, but for now I need a quick fix.
Last year I searched around for a firm to fit me a condensing combi and a two pipe system...
Johnny8718
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Hello I have water leaking (dripping/pouring) when my boiler heats up my hot water. Over the past few weeks I have heard a popping noise as well - though not necessarily at the same time. I suspect it might have something to do with my expansion vessel. Can anyone help?
Regards, Zoomer.
zoomer
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Manufacture :- Ideal Boilers
Make :- Mini HE C24
Serial :- N047991006
As title says, The boiler makes a high pitched noise when any hot tap is being ran, If the tap is turned down the noise gets less and less. The only change that has been done is the washing machine being changed. No...
Matt Lowden
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Hi
Im just in the process of refitting a bathroom and wanted some advice on removing the toilet as it is quite an old toilet by the looks of things and im not sure what is the best way to tackle the removal of this toilet without causing any damage to the underground pipe.
The collar I...
Hi all,
I have just moved into a new house and having a few issues with the boiler. It is a combi and both the DHW and CH work ok in so much that the Rads get hot and HW out the taps. The problem seems to be the timer as it doesn't seem to turn the boiler off at the specified times. I have...
I need to purchase a packaged water booster packaged set i.e 200-250 litre tank, pump and controls to boost my mains water supply so I can run at two showwers at say 6 litres per minute at 1.5 bar. I have seem a set offerred from Pump Express (ref PED 26) but it retails at £1157.37 incl VAT &...
RogerH
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