Schlumpfing

Tosspot said:

Actually, what am I saying *of course* you need one...

If I get a windfall somewhat short of that needed to en-Rohloff the
Streetmachine then I can see a Schlumpf finding its way into the Brom.
Probably go for a small chainwheel and Speed Drive to make it even neater.

(Judith, if you're reading this then note that further research into
this particular line of thinking might result in your credit card
bursting into flame! ;-))

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/

Peter Clinch said:

If I get a windfall somewhat short of that needed to en-Rohloff the
Streetmachine then I can see a Schlumpf finding its way into the Brom.
Probably go for a small chainwheel and Speed Drive to make it even neater.

(Judith, if you're reading this then note that further research into
this particular line of thinking might result in your credit card
bursting into flame! ;-))

La la la la I can't hear you! La la la la!

Judith

Schlump is in place of chainwheel and provides 2 ratios, is that
correct? I use a conventional front derailer which is extremely
reliable and gives 3 ratios!! Also the sprocket sizes can be changed if
needed at very little cost. What is the point of shlump?

Quoted message said:

Schlump is in place of chainwheel and provides 2 ratios, is that
correct? I use a conventional front derailer which is extremely
reliable and gives 3 ratios!! Also the sprocket sizes can be changed if
needed at very little cost. What is the point of shlump?

Derailleurs are considerably less reliable in shifting (anyone using
them for any length of time /will/ have thrown a chain at some point
when trying to change gear) and accelerate wear on the chain. Another
facet of reliability is an external mount and mechanism which is more
prone to being moved or damaged.

They also require a single crank rotation for a single chainwheel
rotation, which can lead to rather outsize chainwheels for any sort of
Serious Speed on small wheel bikes which have intrinsically lower gearing.

Schlumpf now make gearing for unicycles, which ain't gonna happen with a
derailleur!

The above are not typically problems for most people, which is why
Shlupmfs aren't that common. But where they work well, they work better
than a derailleur alternative in many cases.

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/

Quoted message said:

Schlump is in place of chainwheel and provides 2 ratios, is that
correct? I use a conventional front derailer which is extremely
reliable and gives 3 ratios!! Also the sprocket sizes can be changed
if needed at very little cost. What is the point of shlump?

I can think of three reasons why they might be good (and there might be many
more):

a) awkward to impossible to achieve desired ratio. Some small wheeled bikes
are in this category, where either a silly small rear sprocket or a huge
chainring is needed.
b) bikes where keeping muck out is desirable. Similar to case for rear hub
gears.
c) bikes where keeping mechanical bits "inside" is desirable. Folders are
often in this category to keep oil and spiky bits away when carrying.

And several reasons why they might not be good, which includes the options
on multiple chainrings mentioned above, as well as price.

I have a friend with a Schlumpf'd Brompton to extend its gear range. A good
solution for that bike.

- Nigel

--
Nigel Cliffe,
Webmaster at http://www.2mm.org.uk/

Quoted message said:

Schlump is in place of chainwheel and provides 2 ratios, is that
correct? I use a conventional front derailer which is extremely
reliable and gives 3 ratios!! Also the sprocket sizes can be changed if
needed at very little cost. What is the point of shlump?

You've really hit the nail on the head. In my case, and read a few bits
-v, there are very specific requirements, which can I think be
summarised as;

1) The current gear range is inadequate.
2) Fitting a front mech/triple chain ring is
going to be a right royal pain in the [censored].

the solution offers you this;

1) Adequate gear range.
2) No faffing about.

The schlumpf fits a standard bottom bracket, requires no cabling, and
does the job. If you need one, there really isn't anything else that
will do, its really as simple as that.

Btw, I'm riding this thing
http://www.anthrotech.de/TechnikBilder/Lenkung.html with the Rohloff
option. So fitting a triple setup is a right royal.

Points taken. I don't need one it seems. Found this while following
anthrotech links - the ultimate boy fanatasy bike;
http://www.fresh-breeze.de/en/en_flyke.htm
Could one fly to work - land in local park and pedal the rest of the
way?

On Fri, 12 Aug 2005 07:44:46 +0200, Tosspot <[email hidden]>

Quoted message said:

Done a few hundred Ks now with the Schlumpf speed drive fitted so here's
the good and bad.

Luvverly piece of engineering.

Changes gear with a kick of the ankle.

Is *perfect* for the Anthrotech, which is under geared.

Is fun demonstrating the outside goes round
faster than the inside ;-)

I now have 28 gears!

and the bad.

I tend to clip the changer sometimes. Might
adjust the cleats on my shoes a tad.

Price.

Schlumpf innovations were receptive to the idea they assemble the whole
thing and ship it intact, were friendly and responded to e-mails quickly
but aren't very proactive. I had a long wait due to getting bits from
Anthrotech and a rush of orders for Schlumpf and they didn't keep me
updated very well.

In short, perfect for the job, but hard to justify the price. If you
really need one, I have no qualms about recommending them.

http://www.schlumpf.ch/

Actually, what am I saying *of course* you need one...

Hello,

Does the Schlumpf work with clipless pedals?
You don't need to unclip to change the gear?

Thanks
Taka

Taka said:

On Fri, 12 Aug 2005 07:44:46 +0200, Tosspot <[email hidden]>
wrote:

<snip>

Quoted message said:

Quoted message said:

In short, perfect for the job, but hard to justify the price. If you
really need one, I have no qualms about recommending them.

http://www.schlumpf.ch/

Actually, what am I saying *of course* you need one...

Hello,

Does the Schlumpf work with clipless pedals?
You don't need to unclip to change the gear?

Not on mine, there is more than enough play to kick the shifter over. I
can imagine if you have pedals with little or no float it might be an
issue, but ordinary SPDs, no problems.

Peter Clinch said:

Schlumpf now make gearing for unicycles,

Pete, you do know that you're now in my wife's bad books. That's another
expensive addition to the Christmas list! [1]

Graeme

[1] Not that it ever gets much shorter. Strangely enough, it's only the
cheaper items that manifest themselves in my stocking. 🙂

Graeme Dods said:

Pete, you do know that you're now in my wife's bad books. That's another
expensive addition to the Christmas list! [1]

Pass on the blame to Velovision's Peter Eland! If his mag hadn't had a
feature on geared unicycles then perhaps Florian Schlumpf wouldn't have
made it an Official product...

(one of the back issues of VV, can't remember which offhand, has the
above said article, which makes quite interesting reading)

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/

Peter Clinch said:

Pass on the blame to Velovision's Peter Eland! If his mag hadn't had a
feature on geared unicycles then perhaps Florian Schlumpf wouldn't have
made it an Official product...

Nope, I'm afraid my wife is very much of the "shoot the messenger" mind
set. Don't worry, we live a fair old way from Dundee 🙂

Graeme

Peter Clinch said:

Pass on the blame to Velovision's Peter Eland! If his mag hadn't had a
feature on geared unicycles then perhaps Florian Schlumpf wouldn't have
made it an Official product...

Sorry, was I bad to put Peter in touch with Greg Harper, leading to the
article? Although ISTR I wasn't the only reader to do so.

--
Danny Colyer (the UK company has been laughed out of my reply address)
<URL:http://www.speedy5.freeserve.co.uk/danny/>
"He who dares not offend cannot be honest." - Thomas Paine

Danny Colyer said:

Peter Clinch said:

Pass on the blame to Velovision's Peter Eland! If his mag hadn't had a
feature on geared unicycles then perhaps Florian Schlumpf wouldn't have
made it an Official product...

Sorry, was I bad to put Peter in touch with Greg Harper, leading to the
article? Although ISTR I wasn't the only reader to do so.

I knew Harper had to come into it somewhere. It's been a while since I read
RSU, but it had a powerful whiff of him about it. Thankfully there were no
swim suit shots though! 🙂

Graeme

Peter Clinch said:

Derailleurs are considerably less reliable in shifting (anyone using
them for any length of time /will/ have thrown a chain at some point
when trying to change gear) and accelerate wear on the chain. Another
facet of reliability is an external mount and mechanism which is more
prone to being moved or damaged.

How many front derailleurs would you have to replace to pay for a
Schlumpf? ;-)

d.

Graeme Dods said:

I knew Harper had to come into it somewhere. It's been a while since I read
RSU, but it had a powerful whiff of him about it. Thankfully there were no
swim suit shots though! 🙂

Hey, you'll have people wondering what you're going on about now.

For those who *aren't* regulars on rec.sport.unicycling, a while ago
someone suggested creating a gallery of faces to allow people to put
faces to names of regular posters. This is the picture that Harper posted:
<URL:http://gallery.unicyclist.com/faces/aam>

and FWIW, this is mine:
<URL:http://gallery.unicyclist.com/faces/abx>

--
Danny Colyer (the UK company has been laughed out of my reply address)
<URL:http://www.speedy5.freeserve.co.uk/danny/>
"He who dares not offend cannot be honest." - Thomas Paine

davek said:

How many front derailleurs would you have to replace to pay for a
Schlumpf? ;-)

In purely financial terms, lots. But if you have one buggered up
that ruins your main annual holiday, how does that convert directly
into money?

As with the Rohloff and the Schmidt dynohub, hydraulic brakes,
custom frames etc. etc., there are times when Bangs per Buck is
simply less important than Total Bangs, /if/ you have the Bucks
available.

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/

Peter Clinch said:

As with the Rohloff and the Schmidt dynohub, hydraulic brakes,
custom frames etc. etc., there are times when Bangs per Buck is
simply less important than Total Bangs, /if/ you have the Bucks
available.

Funny you should mention dynohubs in this context, after I was left
cursing my bottle dynamo in the rain last night...

d.