SON et lumiere

Dave Larrington said the following on 07/07/2006 12:52:

Quoted message said:

I'm sure I saw on here a while ago that Herr Schmidt's Most Excellent
hub dynamo will complain bitterly if asked to operate with the
connectors on the "wrong" side.

Did I imagine it?

Dunno, but I think hub dynamos generally are "one-way" devices.

Quoted message said:

And the fork to which it is to be attached has its brake mounting tabs
on the front of the RIGHT fork blade.

You sure????? Every disc brake I've seen will only fit on the left
side. Silly question time - you have fitted the fork the right way
round, haven't you? If you turn it around, suddenly the brake mounting
tabs will be on the rear of the left blade, which is where it's meant to
be. If it's an MTB suspension fork, it would be possible to fit it the
wrong way around in some instances.

(I know, I'm sure it's a silly question!!)

--
Paul Boyd
http://www.paul-boyd.co.uk/

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Dave Larrington said the following on 07/07/2006 12:52:

Quoted message said:

And the fork to which it is to be attached has its brake mounting tabs
on the front of the RIGHT fork blade.

You sure????? Every disc brake I've seen will only fit on the left
side. Silly question time - you have fitted the fork the right way
round, haven't you? If you turn it around, suddenly the brake mounting
tabs will be on the rear of the left blade, which is where it's meant to
be. If it's an MTB suspension fork, it would be possible to fit it the
wrong way around in some instances.

The frame - a Cotic RoadRat - has not yet materialised on the doorstep
of Larrington Towers, but the photos on their web site do indeed show
the thing with a disc brake on the front of the right leg. Clearly
someone has been listening to Mr. Annan of this parish...

<URL:http://homepage.mac.com/spittingcat/cotic/product/interface/roadrat
/gallery/mainpic_03.jpg>

--
Dave Larrington - <http://www.legslarry.beerdrinkers.co.uk/>
Do not top-post like a Cretinous Foul-Yob fit only for Stoning.

Dave Larrington said:

Did I imagine it?

Either:

1. Yes,

or:

2. I fitted mine the right way round by sheer fluke, cos I certainly
didn't follow any instructions telling me which way it had to go.

I suspect 1 since it gives out light whether the wheel is rotated
forwards or backwards.

Quoted message said:

The reason I ask is that a shiny new SON-equipped wheel is e'en now
winging its way towards Larrington Towers.

Woo!

d.

Dave Larrington said:

The frame - a Cotic RoadRat - has not yet materialised on the doorstep
of Larrington Towers, but the photos on their web site do indeed show
the thing with a disc brake on the front of the right leg. Clearly
someone has been listening to Mr. Annan of this parish...

<URL:http://homepage.mac.com/spittingcat/cotic/product/interface/roadrat/gallery/mainpic_03.jpg>

OTOH:

http://homepage.mac.com/spittingcat/cotic/roadrat/photos/06.jpg

Anthony

Dave Larrington said:

The frame - a Cotic RoadRat - has not yet materialised on the doorstep
of Larrington Towers

An /upwrong/? I thought you were allergic to those?

Dave Larrington said:

I'm sure I saw on here a while ago that Herr Schmidt's Most Excellent
hub dynamo will complain bitterly if asked to operate with the
connectors on the "wrong" side.

Did I imagine it?

The reason I ask is that a shiny new SON-equipped wheel is e'en now
winging its way towards Larrington Towers. It is a disc brake version.
And the fork to which it is to be attached has its brake mounting tabs
on the front of the RIGHT fork blade.

So am I doomed to having to replace the fork with a conventionally-laid
out one?

As it's AC I can't see how it can possibly matter. (And as it's
isolated from the shell I can't see how it could matter even if it were
DC)

(are you sure you haven't got a reversed image of those forks? My
brother had a photo of him playing the viola "left handed" and it took
a few seconds to work out what was wrong with the picture)

Tim.

Anthony Jones said:

OTOH:

http://homepage.mac.com/spittingcat/cotic/roadrat/photos/06.jpg

Actually, I take that back:

http://www.singletrackworld.com/article.php?sid=2001

RE😄isc mount location!

by: Cy on: Wednesday 31 May 2006 @ 11:26:34

It's on the front right for a couple of reasons. Firstly, it puts
the disc brake forces into the dropout, rather than out of it so you
won't get any axle movement with heavy disc braking. Secondly, it
means that regardless of what caliper you're using you can always
get to the mudguard eyes on the back of the dropouts. There are just
too many possible caliper configurations to say 'everything works
with mudguards' so we put the mount properly out of the way.

Anthony

In article <[email hidden]>

Anthony Jones said:

Anthony Jones said:

OTOH:

http://homepage.mac.com/spittingcat/cotic/roadrat/photos/06.jpg

Actually, I take that back:

http://www.singletrackworld.com/article.php?sid=2001

RE😄isc mount location!

by: Cy on: Wednesday 31 May 2006 @ 11:26:34

It's on the front right for a couple of reasons. Firstly, it puts
the disc brake forces into the dropout, rather than out of it so you
won't get any axle movement with heavy disc braking. Secondly, it
means that regardless of what caliper you're using you can always
get to the mudguard eyes on the back of the dropouts. There are just
too many possible caliper configurations to say 'everything works
with mudguards' so we put the mount properly out of the way.

Nothing a hacksaw and a bit of glue won't fix :-)

Dave Larrington said:

I'm sure I saw on here a while ago that Herr Schmidt's Most Excellent
hub dynamo will complain bitterly if asked to operate with the
connectors on the "wrong" side.

Did I imagine it?

The reason I ask is that a shiny new SON-equipped wheel is e'en now
winging its way towards Larrington Towers. It is a disc brake version.
And the fork to which it is to be attached has its brake mounting tabs
on the front of the RIGHT fork blade.

So am I doomed to having to replace the fork with a conventionally-laid
out one?

The concern is that the RH threaded cover off the generator might work
loose over time. Probably theoretical as opening a hub is a mayor
operation with a big vise etc.
I'd say put a mark (felt tipped pen) over the joint and see how it goes.

--
---
Marten Gerritsen

INFOapestaartjeM-GINEERINGpuntNL
www.m-gineering.nl

Anthony Jones said the following on 07/07/2006 13:32:

Quoted message said:

Actually, I take that back:

http://www.singletrackworld.com/article.php?sid=2001

Well, well, well!!!

--
Paul Boyd
http://www.paul-boyd.co.uk/

[email hidden] said the following on 07/07/2006 13:31:

Quoted message said:

As it's AC I can't see how it can possibly matter. (And as it's
isolated from the shell I can't see how it could matter even if it were
DC)

Sometimes a motor or dynamo can be designed mechanically to work better
in one direction than the other. As to whether this applies to
dynohubs, I have absolutely no idea, but there is more to consider than
just whether it is AC or DC :-)

--
Paul Boyd
http://www.paul-boyd.co.uk/

Quoted message said:

(are you sure you haven't got a reversed image of those forks? My
brother had a photo of him playing the viola "left handed" and it took
a few seconds to work out what was wrong with the picture)

- he doesn't play the viola?

Quoting Dave Larrington <[email hidden]>:

Quoted message said:

I'm sure I saw on here a while ago that Herr Schmidt's Most Excellent
hub dynamo will complain bitterly if asked to operate with the
connectors on the "wrong" side.

Yes. The problem is not electrical, but that it will tend to unscrew
itself into bits.
--
David Damerell <[email hidden]> Distortion Field!
Today is Second Thursday, Presuary.

Paul Boyd said:

[email hidden] said the following on 07/07/2006 13:31:

Quoted message said:

As it's AC I can't see how it can possibly matter. (And as it's
isolated from the shell I can't see how it could matter even if it were
DC)

Sometimes a motor or dynamo can be designed mechanically to work better
in one direction than the other. As to whether this applies to
dynohubs, I have absolutely no idea, but there is more to consider than
just whether it is AC or DC :-)

The Nexus dynohub I just bought has an indicated direction of rotation.
I shall ride it backwards down a hill at night and see if it works ok.

Dave Larrington said:

I'm sure I saw on here a while ago that Herr Schmidt's Most Excellent
hub dynamo will complain bitterly if asked to operate with the
connectors on the "wrong" side.

Did I imagine it?

The reason I ask is that a shiny new SON-equipped wheel is e'en now
winging its way towards Larrington Towers. It is a disc brake version.
And the fork to which it is to be attached has its brake mounting tabs
on the front of the RIGHT fork blade.

So am I doomed to having to replace the fork with a conventionally-laid
out one?

I think you will find that as it will effectively be running backwards,
it will suck all light from out in front of you, and make the world very
dark.

Quoted message said:

As it's AC I can't see how it can possibly matter. (And as it's
isolated from the shell I can't see how it could matter even if it were
DC)

Maybe the torque when the lamp is on (fairly small, but more than a
bottle dynamo due to the low rpm) can cause something to unscrew?

Ask SON if they have a version for a monocycle. This one should work both
ways.

Le Fri, 07 Jul 2006 12:52:26 +0100, Dave Larrington a écrit :

Quoted message said:

I'm sure I saw on here a while ago that Herr Schmidt's Most Excellent
hub dynamo will complain bitterly if asked to operate with the
connectors on the "wrong" side.

Did I imagine it?

The reason I ask is that a shiny new SON-equipped wheel is e'en now
winging its way towards Larrington Towers. It is a disc brake version.
And the fork to which it is to be attached has its brake mounting tabs
on the front of the RIGHT fork blade.

So am I doomed to having to replace the fork with a conventionally-laid
out one?

On 07/07/2006 15:37, Tosspot said,

Quoted message said:

The Nexus dynohub I just bought has an indicated direction of rotation.
I shall ride it backwards down a hill at night and see if it works ok.

Let us know how you get on :-)

--
Paul Boyd
http://www.paul-boyd.co.uk/

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

Dave Larrington said:

The frame - a Cotic RoadRat - has not yet materialised on the doorstep
of Larrington Towers

An /upwrong/? I thought you were allergic to those?

Fixers is different (yes, I am scheming a fixer with a disc brake!).

--
Dave Larrington - <http://www.legslarry.beerdrinkers.co.uk/>
The best way to confuse a Daily Mail reader is to tell it that
paedophiles form the staple diet of asylum seekers.