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These DAB ariels have been wired into the house and I need to check that they work because there have been some other problems with other ports.
The only DAB radio I have is a Roberts Gemini 7. It has an ariel that can be unscrewed. So my thought was to get a cable and pug on end into the wall and the other into the radio...
... The first cable I bought was for a car and didn't fit.
It's hard to see but this is what the male ariel socket looks like:
http://ecx.images-amazon.com/images/I/41bgUO%2BXIXL._SX300_.jpg
1) will this work as a testing method; and
2) can anyone advise what cable I need?Cheers.
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how do they work
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These DAB ariels have been wired into the house and I need to check that they work because there have been some other problems with other ports.
The only DAB radio I have is a Roberts Gemini 7. It has an ariel that can be unscrewed. So my thought was to get a cable and pug on end into the wall and the other into the radio...
... The first cable I bought was for a car and didn't fit.
It's hard to see but this is what the male ariel socket looks like:
http://ecx.images-amazon.com/images/I/41bgUO%2BXIXL._SX300_.jpg
1) will this work as a testing method; and
2) can anyone advise what cable I need?Cheers.
1) probably
2) http://www.maplin.co.uk/f-plug-to-coax-plug-2m-29533?c=affilwin78888&u=skim127x1068766x089ef3e0c241c06484b1d97127f97f8e
3) aerial, to avoid disambiguation with Disney's Little Mermaid, or Israel's former leader -
Garmin speed/cadence sensor
Are the magnets different? I have a sensor with no magners, bought little pedal axle magnets and they work for cadence but not for speed on the spokes
no magners? you might need some incider information to solve this
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If me and my identical brother who weighs the same and has the same frontal area as me ride up a hill, me on 48x17 fixed him on 39x23 free, in exactly the same time on bikes which weigh the same and are equally as efficient, how will our power outputs vary?
My limited understanding of physics makes me want to say that I'll be putting out more torque, but the same power as him, but I don't really know. Also, what will doing this repeatedly as training do for us both in terms of power and aerobic fitness gains?
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http://en.wikipedia.org/wiki/Reed_switch
The Reed switch registers the magnet when it goes past.
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Magnet alignment is at least as important as distance. Make sure the centre of the magnet passes the groove in the reed switch housing. The indicator LED on the Garmin GSC10 will tell you whether all is well, check first that you can get it to flash using a big magnet before wasting any more time messing around with wheel magnet positioning.
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http://en.wikipedia.org/wiki/Reed_switch
The Reed switch registers the magnet when it goes past.
reed switch?!? that's a bit old hat; one would hope that any recent devices employ hall effect technology
science quibbling thread >>>>>>
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If me and my identical brother who weighs the same and has the same frontal area as me ride up a hill, me on 48x17 fixed him on 39x23 free, in exactly the same time on bikes which weigh the same and are equally as efficient, how will our power outputs vary?
My limited understanding of physics makes me want to say that I'll be putting out more torque, but the same power as him, but I don't really know. Also, what will doing this repeatedly as training do for us both in terms of power and aerobic fitness gains?
Depends. Are one of you ascending the hill on a treadmill?
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If me and my identical brother who weighs the same and has the same frontal area as me ride up a hill, me on 48x17 fixed him on 39x23 free, in exactly the same time on bikes which weigh the same and are equally as efficient, how will our power outputs vary?
My limited understanding of physics makes me want to say that I'll be putting out more torque, but the same power as him, but I don't really know. Also, what will doing this repeatedly as training do for us both in terms of power and aerobic fitness gains?
not at all
indeed
I'm not an expert on this, but if you do a higher rpm rate you train efficiency and duration, whereas the other form would strengthen your leg muscles (if your knees can handle it) but do nothing for your stamina
also it will be more of a pain descending fixed
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Has anyone got one of these bags? http://www.wiggle.co.uk/ortlieb-classic-large-saddle-bag/
If so, would you recommend?
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I seem to remember a discussion somewhere which said they had far too small a capacity to be much use. Haven't tried one myself though.
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can this rack be fitted without a drilled fork?
Maybe, but the implied load for a larger rack like that might not make it a very good idea. You could drill out the mounting hole to fit the front axle.
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Has anyone got one of these bags? http://www.wiggle.co.uk/ortlieb-classic-large-saddle-bag/
If so, would you recommend?
I have one. Not the biggest capacity, but surprisingly stable in use. You could probably carry enough for an overnight stop.
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Any question answered...
Posted by
@carson
Someone mentioned that Boardman was putting out around 450W for his hour record- similar to what Wiggins produced at the Olympic TT I believe?
In so far as we ever get to know exactly what they produce of course.