Hope 1 v Ayups

[summerdays]

No doubt I've said before, but the basic standard of eyesight required for driving is pretty low and not even remotely adequate on todays roads even in daytime. The reason I know this is because I have perfect eyesight when wearing rigid contact lenses and border-line legal for driving when wearing glasses. The first time I drove with contacts in I was shocked at the difference.

Assuming that drivers can see as well as you can is a really bad idea. People with astigmatism, cataracts or kerataconus in particular may be affected more by brights lights at night and still be driving legally.

I remember my driving instructor checking whether I could read a number plate before I got in the car for the first lesson (many many years ago), and I was able to read it, got in the car and put on my glasses and he was surprised that I needed them. But I was aware of the difference the glasses made - everything was clearer/sharper - I have astigmatism. He said I was legal to drive without the glasses.

 

[semislickstick]

Hope 1 v Ayups

(back to the topic)
How does the German road approved bike light Busch & Müller IXON IQ to the hope and Ayup?

 

[mattybain]

Hope 1 v Ayups

(back to the topic)
How does the German road approved bike light Busch & Müller IXON IQ to the hope and Ayup?

Never heard of them, but looking at them they look quite good.

Wish it wasn't rated in Lux though makes it difficult to compare.

 

[RedBike]

Hope 1 v Ayups

(back to the topic)
How does the German road approved bike light Busch & Müller IXON IQ to the hope and Ayup?

No idea; but at 40 lux they should be brighter than the exposure max i've just paid £250 for. Longer run times too!

 

[HJ]

No idea; but at 40 lux they should be brighter than the exposure max i've just paid £250 for. Longer run times too!

How do you know?

Not criticizing just curious.

 

[BentMikey]

I would be very surprised - I don't think so redbike.

 

[mattybain]

Hope 1 v Ayups

(back to the topic)
How does the German road approved bike light Busch & Müller IXON IQ to the hope and Ayup?

Although I don't have much to compare it to (Halfords 3 Lux light) when my IQ arrives (just ordered it €60 including the oversized mount) I will do some camera footage of it for you.

I guess in theory it should be up to 13 times brighter than my current light, although I still find that hard to believe!!

 

[Origamist]

No idea; but at 40 lux they should be brighter than the exposure max i've just paid £250 for. Longer run times too!

No way, RB. It sounds like your confusing lux with lumens.

Lux versus lumen

"The difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. A flux of 1,000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1,000 lux. However, the same 1,000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux.
Achieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 12,000 lumens. To light a factory floor with dozens of times the area of the kitchen would require dozens of such fixtures. Thus, lighting a larger area to the same level of lux requires a greater number of lumens."

http://en.wikipedia.org/wiki/Lux#Lux_versus_lumen

 

[mattybain]

No way, RB. It sounds like your confusing lux with lumens.

Lux versus lumen

"The difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. A flux of 1,000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1,000 lux. However, the same 1,000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux.
Achieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 12,000 lumens. To light a factory floor with dozens of times the area of the kitchen would require dozens of such fixtures. Thus, lighting a larger area to the same level of lux requires a greater number of lumens."

http://en.wikipedia.org/wiki/Lux#Lux_versus_lumen

My understanding was that there was no real way of comparing the two numbers as they are measuring different things.

Surely this is by design so that people are confused?

All I know is that my old light is 3 Lux and the IQ is 40 Lux so for me the difference should be apparent!!

 

[Origamist]

My understanding was that there was no real way of comparing the two numbers as they are measuring different things.

Surely this is by design so that people are confused?

All I know is that my old light is 3 Lux and the IQ is 40 Lux so for me the difference should be apparent!!

That's right - lux and lumens are not directly convertible.

My light has a very high lux rating, but that is because it has narrow beam optimised for throw.

Read Andrew_S post on the CTC forum:
http://forum.ctc.org.uk/viewtopic.php?f=1&t=29553

 

[Plax]

Well I rode in the dark up the canal towpath this morning, in the rain, with my Ayups and one Tesco torch.

The Ayups are great anyway, but having the torch pointed more downwards lit up that extra bit in front of my wheel, and made a difference. I might stick the other one on tonight.

I did similar last night actually (I was cycling on pitch black single track back roads with hedges & fields either side - it was well wicked!). I have the smarts still (5w / 10w ones) and thought I'd leave my Tesco torch on angled down. Beam wasn't as wide but lit up the road directly in front of my front wheel beautifully. When I got onto the main roads, lord knows what car drivers thought when they saw 3 lights heading towards them!

 

[sunnyjim]

My understanding was that there was no real way of comparing the two numbers as they are measuring different things.

Surely this is by design so that people are confused?

All I know is that my old light is 3 Lux and the IQ is 40 Lux so for me the difference should be apparent!!

expressed in terms familiar to the typical (ie hungry) cyclist-

1lb jam - a quantity of jam
1lb jam/sq foot - a density of jam.

'Slice toast -with *thick* jam'
'*Large* slice of toast-with jam'

Picking lights is the same.

 

[RedBike]

No idea; but at 40 lux they should be brighter than the exposure max i've just paid £250 for. Longer run times too!

I would hope that the Exposure maxx is a lot brighter. However, I know that when Roadbike reviewed the exposure lights they measured just 24 Lux for the Exposure Race Maxx and 30 Lux for the Exposure Enduro Maxx.

I also know that my previous lights (Niteflux photon maxx) were the brightest LED lights out at the time and they were 'only' 50lux, 1350lumens.

That should mean the IQ at 40lux is one seriously bright light! (no way!).

(The Exposure maxx is 720 lumens just to throw another number into the mix.)

 

[BigSteev]

expressed in terms familiar to the typical (ie hungry) cyclist-

1lb jam - a quantity of jam
1lb jam/sq foot - a density of jam.

'Slice toast -with *thick* jam'
'*Large* slice of toast-with jam'

Picking lights is the same.

Ah, suddenly everything is clear (or possibly coated with jam)

 

[Windward]

I just fitted the dynamo powered Cyo IQ, and even though it's the one with the reflector (so 40 Lux instead of 60) it is absolutely awesome. The great part is that the LED faces backwards, and is shaped by a reflector which gives a brilliant throw right across the road in a trapezoidal shape like a car headlamp, and which lights the ground right below your wheel- I don't have anything to compare it to myself, but I have seen people with powerful normal LED headlights and their beam is much more centered on a small circular spot, good for helmet mounting but gives you a smaller spot if on the bars.

About the blinding drivers bit, the IQ also cuts off the top of the beam like low beams on cars which means it doesn't blind people despite being so strong, I'm thinking about helmet mounting a hope adventure 1 (the wee version of the vision 1!) if I go on wee cycle paths at night, because with the IQ you can't see low branches and signs so well... or bats!

I'd like to compare it to hopes and ayups in the flesh though, they were my other two choices before I went for this!