On Feb 9, 7:23 am, Buck <[email hidden]> wrote: <snip>
Quoted message said:
I have a bar mounted mirror on the trike but have never tried a helmet mounted one, wouldn't it cause a problem in an accident with snagging or applied localised pressure to a point on the helmet?
<snip> Possible, if unlikely, IMO. I'll take that potential increased risk, in exchange for the benefit of being able to better perceive my surroundings and (hopefully) avoid the accident in the first place.
Best,
Dan
I have the two bar end mirrors on the trike and prefer the wider view, plus I don't think I would function well with a helmet mounted mirror. What ever happened to the company that made a periscope type system built into there helmet.
What ever happened to the company that made a periscope type system built into there helmet.
Looking at their site (reevu.com) I'd say they've given up hats for pedal cyclists in favour of motorcyclists.
I did try a Reevu briefly (it was back when I always wore a lid). It was okay... but not better than that and in practice I found having to move my head to the correct angle to get the right view made it no better than a bar mirror, and in practice your head could well be at an angle on a 'bent other than that which the designers assumed.
Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net [email hidden] http://www.dundee.ac.uk/~pjclinch/
What ever happened to the company that made a periscope type system built into there helmet.
Looking at their site (reevu.com) I'd say they've given up hats for pedal cyclists in favour of motorcyclists.
I did try a Reevu briefly (it was back when I always wore a lid). It was okay... but not better than that and in practice I found having to move my head to the correct angle to get the right view made it no better than a bar mirror, and in practice your head could well be at an angle on a 'bent other than that which the designers assumed.
Pete.
I think they have a good idea, but I think a small video monitor as the type sold for miniature computers and a CCD helmet camera facing rear would be the ultimate. The miniature LCD hangs like a helmet mount mirror, but gives you the view of a full screen monitor.
"Joel" <joelw135atcomcast.net> wrote in message news:[email hidden]...
Quoted message said:
Peter Clinch said:
Joel said:
What ever happened to the company that made a periscope type system built into there helmet.
Looking at their site (reevu.com) I'd say they've given up hats for pedal cyclists in favour of motorcyclists.
I did try a Reevu briefly (it was back when I always wore a lid). It was okay... but not better than that and in practice I found having to move my head to the correct angle to get the right view made it no better than a bar mirror, and in practice your head could well be at an angle on a 'bent other than that which the designers assumed.
Pete.
I think they have a good idea, but I think a small video monitor as the type sold for miniature computers and a CCD helmet camera facing rear would be the ultimate. The miniature LCD hangs like a helmet mount mirror, but gives you the view of a full screen monitor.
Battery life problems...going rear blind when the battery dies. Cost! LCD not so good in bright light. Weight! If a system was developed with a CCD and LCD, there would be no absolute reason to mount the LCD on the helmet, and on a helmet focus distance would probably be a big issue, especially amongst us presbyopic old codgers. With a mirror the focus isn't at the mirror, but rather at the object (I could be wrong here...it's been a long time since high school phyisics). With a LCD the focus is at the surface of the display, and unless you had special lenses ground where the near vision was at the top, you wouldn't be able to focus on the display. Moving the display to a more remote position would require a larger display and more power and then we get back to the bright ambient light display problems.
I think they have a good idea, but I think a small video monitor as the type sold for miniature computers and a CCD helmet camera facing rear would be the ultimate.
Nah... head-up display in your radar-equipped velomobile ;-)
Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net [email hidden] http://www.dundee.ac.uk/~pjclinch/
"Joel" <joelw135atcomcast.net> wrote in message news:[email hidden]...
Quoted message said:
Peter Clinch said:
Joel wrote:
> What ever happened to the company that made a periscope type system > built into there helmet. Looking at their site (reevu.com) I'd say they've given up hats for pedal cyclists in favour of motorcyclists.
I did try a Reevu briefly (it was back when I always wore a lid). It was okay... but not better than that and in practice I found having to move my head to the correct angle to get the right view made it no better than a bar mirror, and in practice your head could well be at an angle on a 'bent other than that which the designers assumed.
Pete.
I think they have a good idea, but I think a small video monitor as the type sold for miniature computers and a CCD helmet camera facing rear would be the ultimate. The miniature LCD hangs like a helmet mount mirror, but gives you the view of a full screen monitor.
Battery life problems...going rear blind when the battery dies. Cost! LCD not so good in bright light. Weight! If a system was developed with a CCD and LCD, there would be no absolute reason to mount the LCD on the helmet, and on a helmet focus distance would probably be a big issue, especially amongst us presbyopic old codgers. With a mirror the focus isn't at the mirror, but rather at the object (I could be wrong here...it's been a long time since high school phyisics). With a LCD the focus is at the surface of the display, and unless you had special lenses ground where the near vision was at the top, you wouldn't be able to focus on the display. Moving the display to a more remote position would require a larger display and more power and then we get back to the bright ambient light display problems.
The LCD system I saw gives you the ability to see picture as if it was on a 50" TV at 7.5' from screen. I had a expermental one for a portable wrist mount computer, which I field tested, and it worked fine, but the computer was crashing all the time. It was designed for the military as a way for a spotter to remain hiden, but still get the view. I simplified it, but you get the point. The camera also had an extreme wide angle view which was adjustable. The battery life for the LCD was 15 hours, and the camera was only 6 hrs. When I tested it the supply was Nicad, but with todays technology for batteries I would think the life would be extended.
I think they have a good idea, but I think a small video monitor as the type sold for miniature computers and a CCD helmet camera facing rear would be the ultimate.
Nah... head-up display in your radar-equipped velomobile ;-)
Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net [email hidden] http://www.dundee.ac.uk/~pjclinch/
I'd vote for having a stoker on a back-to-back tandem as the ultimate in rear vision. Unless they're asleep, or their vocal cords have been paralyzed by fear, it's hard to do better for monitoring the world behind you. :-)
"Joel" <joelw135atcomcast.net> wrote in message news:[email hidden]...
Quoted message said:
Peter Clinch said:
Joel wrote:
> What ever happened to the company that made a periscope type system > built into there helmet.
Looking at their site (reevu.com) I'd say they've given up hats for pedal cyclists in favour of motorcyclists.
I did try a Reevu briefly (it was back when I always wore a lid). It was okay... but not better than that and in practice I found having to move my head to the correct angle to get the right view made it no better than a bar mirror, and in practice your head could well be at an angle on a 'bent other than that which the designers assumed.
Pete.
I think they have a good idea, but I think a small video monitor as the type sold for miniature computers and a CCD helmet camera facing rear would be the ultimate. The miniature LCD hangs like a helmet mount mirror, but gives you the view of a full screen monitor.
Battery life problems...
Power it from a lithium cell, charged by a miniture wind turbine mounted in the vents of your helmet.
Never occurred to me to use one when I was commuting on an upright so perhaps it's just exposure.
Zebee
I didn't start using a mirror on a bike until I started riding a bent. I found that on an upright it was easier to quickly twist my body and look behind me. On my bent I find that very difficult to do. I ride in a fairly reclined position, so the same sort of maneuver I did on an upright tends to produce a view of the ground. I've found I get a better view of the rear with a mirror on a recumbent than I did twisting and looking back on the upright. I didn't know what I was missing when I rode an upright, and if I was to start riding an upright again, I would undoubtedly get a mirror for it.
"Joel" <joelw135atcomcast.net> wrote in message news:[email hidden]...
Quoted message said:
Peter Clinch wrote: > Joel wrote: > >> What ever happened to the company that made a periscope type system >> built into there helmet. > > Looking at their site (reevu.com) I'd say they've given up hats for > pedal cyclists in favour of motorcyclists. > > I did try a Reevu briefly (it was back when I always wore a lid). > It was okay... but not better than that and in practice I found > having to move my head to the correct angle to get the right view > made it no better than a bar mirror, and in practice your head could > well be at an angle on a 'bent other than that which the designers > assumed. > > Pete. I think they have a good idea, but I think a small video monitor as the type sold for miniature computers and a CCD helmet camera facing rear would be the ultimate. The miniature LCD hangs like a helmet mount mirror, but gives you the view of a full screen monitor.
Battery life problems...
Power it from a lithium cell, charged by a miniture wind turbine mounted in the vents of your helmet.
Now how about add a little Infra Red technology for not riding?
"Joel" <joelw135atcomcast.net> wrote in message news:[email hidden]... > Peter Clinch wrote: >> Joel wrote: >> >>> What ever happened to the company that made a periscope type system >>> built into there helmet. >> >> Looking at their site (reevu.com) I'd say they've given up hats for >> pedal cyclists in favour of motorcyclists. >> >> I did try a Reevu briefly (it was back when I always wore a lid). It >> was okay... but not better than that and in practice I found having to >> move my head to the correct angle to get the right view made it no >> better than a bar mirror, and in practice your head could well be at an >> angle on a 'bent other than that which the designers assumed. >> >> Pete. > I think they have a good idea, but I think a small video monitor as the > type sold for miniature computers and a CCD helmet camera facing rear > would be the ultimate. The miniature LCD hangs like a helmet mount > mirror, but gives you the view of a full screen monitor.
Battery life problems...
Power it from a lithium cell, charged by a miniture wind turbine mounted in the vents of your helmet.
Now how about add a little Infra Red technology for not riding?
Let's just go all the way and integrate a particle beam generator to deal with errant cagers. -- Three wheels good, two wheels ok
