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| Do you think its necessary to wear a helmet (on your head) |
| yes |
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41% |
[ 40 ] |
| no |
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58% |
[ 57 ] |
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| Total Votes : 97 |
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| Author |
Message |
mig
E, Silver
Joined: 04 Jan 2006
Posts: 668
Location: manchester
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 Posted: Wed Sep 01, 2010 1:24 pm Post subject: |
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960 lumens for me through a narrow pig track of a road under cover of large trees. seems okay to me
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tamp 'em up solid |
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mattr
World Champ
Joined: 16 Apr 2004
Posts: 12647
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| Posted: Wed Sep 01, 2010 1:29 pm Post subject: |
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| martin smith wrote: |
Mattr talking bollocks. too much light at 480 lumens? you're having a laugh. sunlight is about 32,000–130,000 lumens per square metre.
I can confidently say i can see better with my hope 4 set on full power (980 lumens) than i can whith it set on half power. and even that with it's entire beam concentrated on one square metre is still between 0.75% to 3% as bright as direct sunlight. |
*shakes head* *gives up* |
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Billy Boy
T de F Winner
Joined: 11 Aug 2003
Posts: 30726
Location: Not Aylesbury
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| Posted: Wed Sep 01, 2010 1:29 pm Post subject: |
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| mattr wrote: |
| martin smith wrote: |
Mattr talking bollocks. too much light at 480 lumens? you're having a laugh. sunlight is about 32,000–130,000 lumens per square metre.
I can confidently say i can see better with my hope 4 set on full power (980 lumens) than i can whith it set on half power. and even that with it's entire beam concentrated on one square metre is still between 0.75% to 3% as bright as direct sunlight. |
*shakes head* *gives up* |
Don't give up, this is a good spectator sport.
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martin smith
World Champ
Joined: 09 Jun 2003
Posts: 12187
Location: shoehorning kittens into jars
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| Posted: Wed Sep 01, 2010 1:53 pm Post subject: |
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| mattr wrote: |
| martin smith wrote: |
Mattr talking bollocks. too much light at 480 lumens? you're having a laugh. sunlight is about 32,000–130,000 lumens per square metre.
I can confidently say i can see better with my hope 4 set on full power (980 lumens) than i can whith it set on half power. and even that with it's entire beam concentrated on one square metre is still between 0.75% to 3% as bright as direct sunlight. |
*shakes head* *gives up* |
Probably for the best. now don't forget to tell those rally drivers that they'll be able to see worse with all those silly lights on the front of their cars because the shadows will look like they are in the wrong direction.
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Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you're a mile away and you have their shoes. |
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mattr
World Champ
Joined: 16 Apr 2004
Posts: 12647
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| Posted: Wed Sep 01, 2010 2:03 pm Post subject: |
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| Billy Boy wrote: |
| Don't give up, this is a good spectator sport. |
Not really. We should discuss the benefits of helmets instead. Seeing as martin appears to neither drive or ride on anything except glassy smooth roads and trails. |
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martin smith
World Champ
Joined: 09 Jun 2003
Posts: 12187
Location: shoehorning kittens into jars
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| Posted: Wed Sep 01, 2010 2:09 pm Post subject: |
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| mattr wrote: |
| Billy Boy wrote: |
| Don't give up, this is a good spectator sport. |
Not really. We should discuss the benefits of helmets instead. Seeing as martin appears to neither drive or ride on anything except glassy smooth roads and trails. |
like these guys?
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Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you're a mile away and you have their shoes. |
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mattr
World Champ
Joined: 16 Apr 2004
Posts: 12647
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| Posted: Wed Sep 01, 2010 2:19 pm Post subject: |
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| martin smith wrote: |
| mattr wrote: |
| Billy Boy wrote: |
| Don't give up, this is a good spectator sport. |
Not really. We should discuss the benefits of helmets instead. Seeing as martin appears to neither drive or ride on anything except glassy smooth roads and trails. |
like these guys? |
erm, yes actually. Most night stages are on gravel roads or tarmac. But anyway, you carry on. |
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martin smith
World Champ
Joined: 09 Jun 2003
Posts: 12187
Location: shoehorning kittens into jars
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| Posted: Wed Sep 01, 2010 2:27 pm Post subject: |
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| mattr wrote: |
| martin smith wrote: |
| mattr wrote: |
| Billy Boy wrote: |
| Don't give up, this is a good spectator sport. |
Not really. We should discuss the benefits of helmets instead. Seeing as martin appears to neither drive or ride on anything except glassy smooth roads and trails. |
like these guys? |
erm, yes actually. Most night stages are on gravel roads or tarmac. But anyway, you carry on. |
Ah, right. and i suppose that if they do a night stage that's not on gravel or tarmac they take all those silly bright lights off do they?
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Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you're a mile away and you have their shoes. |
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JONNO
Div 1 Pro
Joined: 24 Jul 2006
Posts: 9031
Location: Up North
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| Posted: Wed Sep 01, 2010 2:37 pm Post subject: |
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| martin smith wrote: |
| mattr wrote: |
| martin smith wrote: |
| mattr wrote: |
| Billy Boy wrote: |
| Don't give up, this is a good spectator sport. |
Not really. We should discuss the benefits of helmets instead. Seeing as martin appears to neither drive or ride on anything except glassy smooth roads and trails. |
like these guys? |
erm, yes actually. Most night stages are on gravel roads or tarmac. But anyway, you carry on. |
Ah, right. and i suppose that if they do a night stage that's not on gravel or tarmac they take all those silly bright lights off do they? |
Can I just ask at what point do your eyes start using their low light sensors as this may have a bearing on the amount of light you need. Also I have heard that your peripheral vision in low light is better than looking straight on so should I ride in the dark with my head at a jaunty angle whils looking out of the side of my eyes for greater safety? Finally, as your eyes adjust anyhow to light levels is it safe for everything outside the beam to be in total darkness, surely you are likely to be decapitated by a low hanging branch or something aka Steve McQueen?
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martin smith
World Champ
Joined: 09 Jun 2003
Posts: 12187
Location: shoehorning kittens into jars
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| Posted: Wed Sep 01, 2010 2:54 pm Post subject: |
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| JONNO wrote: |
| Can I just ask at what point do your eyes start using their low light sensors as this may have a bearing on the amount of light you need. Also I have heard that your peripheral vision in low light is better than looking straight on so should I ride in the dark with my head at a jaunty angle whils looking out of the side of my eyes for greater safety? Finally, as your eyes adjust anyhow to light levels is it safe for everything outside the beam to be in total darkness, surely you are likely to be decapitated by a low hanging branch or something aka Steve McQueen? |
quick answer - no. at the light levels you use for riding at night even with crap lights your cones and rods will both be functioning just fine so it's not an issue. more light = better, obviously depending on beam spread and diminishing returns. hope 4s put out a lot more light than a hope 1 (4 times as much, obviously) but the central spot isn't that different as most of the extra light goes out to the edge. once you get past the point where you eye just turns down the light levels you won't see any better for more light but bike lights aren't anywhere near that point yet.
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Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you're a mile away and you have their shoes. |
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Wozza
Div 1 Pro
Joined: 12 Jun 2003
Posts: 9188
Location: Herts
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| Posted: Wed Sep 01, 2010 3:04 pm Post subject: |
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| Steve McGinty wrote: |
| There should be a compulsory 6 month ban for use of the H-word on here... |
Amen brother McGinty  
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We are old we are young we are in this together. Vagabonds and children, prisoners forever. |
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Hans Datdodishes
T de F Winner
Joined: 28 Feb 2002
Posts: 28370
Location: On the Superior Forum with the cool kids
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| Posted: Wed Sep 01, 2010 3:09 pm Post subject: |
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| martin smith wrote: |
| mattr wrote: |
| martin smith wrote: |
| mattr wrote: |
| Billy Boy wrote: |
| Don't give up, this is a good spectator sport. |
Not really. We should discuss the benefits of helmets instead. Seeing as martin appears to neither drive or ride on anything except glassy smooth roads and trails. |
like these guys? |
erm, yes actually. Most night stages are on gravel roads or tarmac. But anyway, you carry on. |
Ah, right. and i suppose that if they do a night stage that's not on gravel or tarmac they take all those silly bright lights off do they? |
Stop poking the mentals Martin
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World Masters Drive HillClimb For Taureans Category C Champion 2013.
I'm a qualified coach. |
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mattr
World Champ
Joined: 16 Apr 2004
Posts: 12647
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| Posted: Wed Sep 01, 2010 3:12 pm Post subject: |
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| Hans Datdodishes wrote: |
| Stop poking the mentals Martin |
Coming from you Timothy, thats rare praise.......  |
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JONNO
Div 1 Pro
Joined: 24 Jul 2006
Posts: 9031
Location: Up North
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| Posted: Wed Sep 01, 2010 3:15 pm Post subject: |
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| martin smith wrote: |
| JONNO wrote: |
| Can I just ask at what point do your eyes start using their low light sensors as this may have a bearing on the amount of light you need. Also I have heard that your peripheral vision in low light is better than looking straight on so should I ride in the dark with my head at a jaunty angle whils looking out of the side of my eyes for greater safety? Finally, as your eyes adjust anyhow to light levels is it safe for everything outside the beam to be in total darkness, surely you are likely to be decapitated by a low hanging branch or something aka Steve McQueen? |
quick answer - no. at the light levels you use for riding at night even with crap lights your cones and rods will both be functioning just fine so it's not an issue. more light = better, obviously depending on beam spread and diminishing returns. hope 4s put out a lot more light than a hope 1 (4 times as much, obviously) but the central spot isn't that different as most of the extra light goes out to the edge. once you get past the point where you eye just turns down the light levels you won't see any better for more light but bike lights aren't anywhere near that point yet. |
Ta. My Blackburn's fine at the speed I ride home at!
_________________
I was being chased by a police dog last week, and made the mistake of trying to escape through a little tunnel, over a see-saw and through a hoop of fire. It finally caught me as I was weaving in and out of some sticks. |
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