Search results

Those of us who have to watch our money carefully, may be interested in a new bike offering from Stark. I myself bought one of the first bikes ever produced by Stark, in 2017. It was a very cheap bike, but even with an extra battery, it was a truly incredibly low price. I have not been...

Putting an inverter in between drops the efficiency dramatically, and you have blown one up already, but your choice in whatever you do! Depending upon how much light you need, you can string say 5 x 12 volt bulbs of the same wattage in series. Or they could even be camping Fluorescent light...

:-) :-) :-) :-) :-) :-)

All amps work at DC, so what might be a better method of working, is not to go via a mains inverter, with all its inherent problems of noise, size and weight, but to take the 60 Volts DC from the battery, (via a fuse) and convert it to the DC voltages that your amplifier actually...

It certainly has a chance to work better! But its not the speakers that you need to worry about, its the electronics that drive the speakers that may have a hum at the frequency of the "not sine wave" mains you produce! Usually, if you put an Oscilloscope on the output, its more of a square...

IMHO Yes! Why risk a tyre bursting and you getting a popped ear drum! regards Andy

I am not a bike tyre expert, so I generally use about 80% of what is marked on the tyre myself. I certainly would never use more than the marked value....its seems almost as hard as a rock at that reduced pressure! :-) I have cheap Chinese made tyres that came on the bike, they do grip well...

Generally speaking, running at the upper end of the allowed voltage, indicates a short life span. Furthermore, Li-ion batteries, when fully charged, have a far higher actual voltage to their quoted, nominal voltage. My e-bike battery is quoted as being 36 volts nominal. But fully charged it is...

You do need to hold the probes as only light touching will give a very variable reading, hence resistance. The human body is variable enough in resistance, from person to person from day to day, from sweating to not sweating! Furthermore, I have noticed over a great many years, on many 2 wire...

You are asking too much of the unit! Assuming its 300 watts, then it probably needs around 7 amps at 48 volts to run at 300 watts correctly. Therefore it will take almost 9 amps at 60 volts, and overheat and possibly damage delicate components. Andy

You might want to supply a bit more detail. But apparently the reason it failed was that it was built for 48 volts DC input (on the picture only 12 volts by the way!) and your battery delivers 60 volts! It also only delivers 110VAC, probably 60Hz, standard American mains voltage, or do you...

I have actually seen this phenomena many times on different equipment, and I have measured with a DVM on an AC range each time, always for safety reasons, and when I have "felt it", it has always been over 100 VAC. Naturally, an older or even a defective meter with a very low impedance might...

I agree with that completely, but I still recommend an RCD as well. It depends on whether he was measuring on AC or DC. Remember, 2 volts will not be felt by anyone, unless you are using their tongue or something else very sensitive!! Not fingers.... It should be measured using the AC voltage...

Exactly what type of circuit breaker? They all look much the same, but there are important differences. Please identify it exactly. A normal type of circuit breaker has no safety for living things.... Everyone should have one per phase, so as most household mains is a single phase in the UK...

Two or three wire mains lead? Plastic or metal charger case? If metal, is the mains ground wire connected to the case? Did you measure using AC or DC scale/setting on the voltmeter, the 2 volts to the rack? I see this mainly on things like Satellite receivers? But that is not saying that its...

I have never had a spoke break, but there are experts here who can help. Make a new topic and ask just for help with spokes. You might need a cheap vernier gauge, to measure the thickness of the present spokes. Or give the wheel up to an expert.... I myself would be very wary of replacing...

Could be either, but they appear to me to be grease nipples. A high quality, light as possible grease and not too much. Unscrew one and see what is under it:- Nothing = oil, grease= grease! Just being funny, sorry!! Andy

See here:- regards Andy

Sometimes a chain has a removable link, but do make a photograph showing where it runs (or three!) But many bikes, built in a factory, do not have this link, so you need to buy two things, a chain splitter/removal clamp that split the chain for you and the replacement link of the correct size! I...