Rear lights are driving me mad

Cycle-touring, Expeditions, Adventures, Major cycle routes NOT LeJoG (see other special board)
martin113
Posts: 135
Joined: 19 May 2011, 5:35pm

Rear lights are driving me mad

Postby martin113 » 28 Aug 2015, 1:34pm

It's that time of year again when a cyclist's mind turns to thoughts of lights. I want a rechargeable rear light with option to have it steady or flashing. Trouble is that buying on the internet it's hard to see what kind of bracket it comes with. Most just use a rubber ring to fit around the seatpost. Useless if you use a seat pack. I want to fit it to the seat stays but of course with a simple wrap around rubber thing it points mostly up in the air. I want to be able to adjust the direction of the beam to hit those motorists right in the eye. Tell me about your favourite and most powerful lights on your seat stays.

User avatar
Audax67
Posts: 4511
Joined: 25 Aug 2011, 9:02am
Location: Alsace, France
Contact:

Re: Rear lights are driving me mad

Postby Audax67 » 28 Aug 2015, 3:14pm

People with powerful and/or flashing rearlights are a plague for following cyclists. There was a silly fellow last week who had one on his bike and one on his idiot head, both of them flashing in a random pattern at variable intensity, the final blast being powerful enough to cut through steel. Dear Lord the misfortunes I wished upon him, if half of them came true he'd have been in three graves by now and shaping up for a fourth.

FWIW I use a stay-mounted B&M Secula on one side and one of these as a back-up on the opposite stay:

http://www.cateye.com/en/products/detail/TL-LD650/

Angled horizontally and in non-blinking mode, of course.
Have we got time for another cuppa?

Therealsouthstander
Posts: 233
Joined: 5 Oct 2012, 9:22pm

Re: Rear lights are driving me mad

Postby Therealsouthstander » 28 Aug 2015, 3:30pm

Well, when I'm cycling into work on a dark morning at 4.30 am on a rural road ,I have 2 flashing rear lights - the Cateye LT 1100.1 on my helmet and 1 on my saddle bag..

I want cars/ trucks to see me from as far back as possible.. Do you honestly think this is wrong. ?

Colgrenfell
Posts: 23
Joined: 13 Aug 2015, 11:17pm

Re: Rear lights are driving me mad

Postby Colgrenfell » 28 Aug 2015, 5:53pm

Big fan of the Moon http://www.moon-sport.com/product-detail.php?id=72 lights, great mounts and steady or flashing states

PH
Posts: 7515
Joined: 21 Jan 2007, 12:31am
Location: Derby
Contact:

Re: Rear lights are driving me mad

Postby PH » 28 Aug 2015, 7:30pm

Therealsouthstander wrote:Well, when I'm cycling into work on a dark morning at 4.30 am on a rural road ,I have 2 flashing rear lights - the Cateye LT 1100.1 on my helmet and 1 on my saddle bag..


Apparently you're better off with one flashing and one steady, can't remember where I read it but think it was a reliable source. The theory is that the flashing light gets more attention but the steady light makes it easier to judge distance.

PH
Posts: 7515
Joined: 21 Jan 2007, 12:31am
Location: Derby
Contact:

Re: Rear lights are driving me mad

Postby PH » 28 Aug 2015, 7:34pm

martin113 wrote:It's that time of year again when a cyclist's mind turns to thoughts of lights. I want a rechargeable rear light with option to have it steady or flashing. Trouble is that buying on the internet it's hard to see what kind of bracket it comes with. Most just use a rubber ring to fit around the seatpost. Useless if you use a seat pack. I want to fit it to the seat stays but of course with a simple wrap around rubber thing it points mostly up in the air. I want to be able to adjust the direction of the beam to hit those motorists right in the eye. Tell me about your favourite and most powerful lights on your seat stays.


I have several Cateyes, there's a choice of brackets and which don't seem to have changed in years.
http://www.sjscycles.co.uk/rear-light-b ... EYE&page=1

Allows me to swap lights between rack, seatpost and stay on different bikes.

Bigdummysteve
Posts: 353
Joined: 24 May 2015, 9:29am
Location: Oxfordshire

Re: Rear lights are driving me mad

Postby Bigdummysteve » 29 Aug 2015, 10:53am

Colgrenfell wrote:Big fan of the Moon http://www.moon-sport.com/product-detail.php?id=72 lights, great mounts and steady or flashing states


I have a moon front light, the mounts are very solid and the angle can be adjusted so should work on a seatstay.

ANTONISH
Posts: 1592
Joined: 26 Mar 2009, 9:49am

Re: Rear lights are driving me mad

Postby ANTONISH » 30 Aug 2015, 9:40am

A lot of rear lamps have seatpost mounts which are useless in most circumstances.
I dealt with this by cutting a length of 25mm aluminium tube and mounting it on my seat stay with two rubberised (not plasticised) "P" clips.
The tube is mounted parallel to the seat stay and will accept two seatpost mounted rear lights.

pwa
Posts: 10302
Joined: 2 Oct 2011, 8:55pm

Re: Rear lights are driving me mad

Postby pwa » 1 Sep 2015, 10:49am

I prefer the barrel shaped Cateye things with 2 x AA batteries (good rechargeables) that can be renewed each year. I use a pannier rack so the light is always securely fitted in the best position. I try to have 2 rear lights in case something goes wrong with one. A light with a built in battery will only last as long as the battery.

martin113
Posts: 135
Joined: 19 May 2011, 5:35pm

Re: Rear lights are driving me mad

Postby martin113 » 1 Sep 2015, 5:30pm

Audax67 I like the look of that Cateye LD650 but it looks to me as though it will hit the spokes if you mount it horizontally on the seat stay. Yes? Or no?

pwa
Posts: 10302
Joined: 2 Oct 2011, 8:55pm

Re: Rear lights are driving me mad

Postby pwa » 2 Sep 2015, 7:43am

Fitting lights to the rear of a bike can be a pain, but however it is done it is a good idea to avoid dazzling other road users. You want to be noticed, but you also want the driver behind you to have his / her eyesight working properly as they consider passing you. For that reason I make sure my good, bright rear lights (I use two) are not pointed upwards. I want a driver 100 metres behind me to get the full blast, straight in the eyes, but I want a driver close behind me to be getting more of the peripheral light and not the full blast. Making sure that the main beam is horizontal achieves this, at least on a level road. I also like lights that have some light thrown left, right and upwards, but not in a way that dazzles.

In the past I have bodged a way of fitting lights to the unused lower rack fitting point on a bike, near the bottom of the seat stay. One each side.

pete75
Posts: 11741
Joined: 24 Jul 2007, 2:37pm

Re: Rear lights are driving me mad

Postby pete75 » 2 Sep 2015, 8:27am

It's reading threads like this that makes me glad I've fitted five of my bikes with hub dynamos. They use various combination of AXA and B&M lights all of which are bright with powerful well focused beams. The whole system is always there and always works very reliably.

A reasonably good dynamo system with a 70 lux front light and a powerful rear can be installed for not much over 60 quid.

pwa
Posts: 10302
Joined: 2 Oct 2011, 8:55pm

Re: Rear lights are driving me mad

Postby pwa » 2 Sep 2015, 8:53am

pete75 wrote:It's reading threads like this that makes me glad I've fitted five of my bikes with hub dynamos. They use various combination of AXA and B&M lights all of which are bright with powerful well focused beams. The whole system is always there and always works very reliably.

A reasonably good dynamo system with a 70 lux front light and a powerful rear can be installed for not much over 60 quid.


How do you mount the rear light?

pete75
Posts: 11741
Joined: 24 Jul 2007, 2:37pm

Re: Rear lights are driving me mad

Postby pete75 » 2 Sep 2015, 9:02am

pwa wrote:
pete75 wrote:It's reading threads like this that makes me glad I've fitted five of my bikes with hub dynamos. They use various combination of AXA and B&M lights all of which are bright with powerful well focused beams. The whole system is always there and always works very reliably.

A reasonably good dynamo system with a 70 lux front light and a powerful rear can be installed for not much over 60 quid.


How do you mount the rear light?


The back light fits on the carrier light mounting plate. Dynamo rear lights are usually adjustable for 50 or 80mm hole spacing though some have two versions depending on the spacing you need.

Tangled Metal
Posts: 5711
Joined: 13 Feb 2015, 8:32pm

Re: Rear lights are driving me mad

Postby Tangled Metal » 2 Sep 2015, 9:50am

Cateye do a bracket to fit racks which I used to have and worked well. Now I have a rapid X2 from cateye which is really a good light. It fits with rubber bands but works on seat post, racks and pretty much anywhere you can wrap the rubber band around. On seat stays it points up but I did see something in a bike shop (online) that was a bracket from Cateye that created an angled surface which I took as something to tilt lights such as these up when using on seat stays and other angled fixing points. Perhaps check with cateye or a retailer that stocks them for an idea since AFAIK cateye will have seen the issue and created a bracket for it. They do seem to have a lot of brackets in their catalogue.

I do rate the rapid X and rapid X2 is even brighter. One is 25lumens the other is 50 lumens. Both not a lot but seriously they are noticeable and from a wide angle too. You do not need a truly high lumen rear light IMHO except for daylight running lights which are not best for night use IMO.

PS rear lights that are too bright are not nice to follow behind.

PPS whatever you do make sure your rear lights are actually visible from behind. The number of people riding bikes with rear lights on their MTB seat post with the wheel between them and anyone behind them is alarming at times.