P
Peter Clinch
Guest
Alan Braggins wrote:
> In article <Vsi*[email protected]>, David Damerell wrote:
>> Quoting SMS <[email protected]>:
>> >From stupid statements about only needing high illumination on
>>> downhills (where your speed is fast enough for sufficient power from a
>>> hub dynamo)
>> If you only hit 10-12mph on downhills, are you sure you don't have what we
>> call "roller skates"?
>
> Initial experiments with a DLumotec (LED) primary and Lumotec secondary
> suggest that the primary will still give adequate light with an unswitched
> secondary at a brisk walking speed. Not "high", but how much light do you
> need at walking pace?
My house is by an unsurafced track on a hill and I far more usually go
up than down to leave, so with a heavy touring recumbent I tend not to
be tearing out of the place too fast. The track is unlit, and has a lot
of tree cover to keep out moonlight etc. I don't have any problem
seeing my way out with a single DLumtoec Oval and SON (or single halogen
basta/SON on the brom, or single halogen Lumotec and B&M 6V bottle on
the 8 Freight).
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 protected] http://www.dundee.ac.uk/~pjclinch/
> In article <Vsi*[email protected]>, David Damerell wrote:
>> Quoting SMS <[email protected]>:
>> >From stupid statements about only needing high illumination on
>>> downhills (where your speed is fast enough for sufficient power from a
>>> hub dynamo)
>> If you only hit 10-12mph on downhills, are you sure you don't have what we
>> call "roller skates"?
>
> Initial experiments with a DLumotec (LED) primary and Lumotec secondary
> suggest that the primary will still give adequate light with an unswitched
> secondary at a brisk walking speed. Not "high", but how much light do you
> need at walking pace?
My house is by an unsurafced track on a hill and I far more usually go
up than down to leave, so with a heavy touring recumbent I tend not to
be tearing out of the place too fast. The track is unlit, and has a lot
of tree cover to keep out moonlight etc. I don't have any problem
seeing my way out with a single DLumtoec Oval and SON (or single halogen
basta/SON on the brom, or single halogen Lumotec and B&M 6V bottle on
the 8 Freight).
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 protected] http://www.dundee.ac.uk/~pjclinch/