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bijou: A jewel, a trinket; a ‘gemÂ’ among works of art. (OED)   Message List  
Reply | Forward Message #12359 of 24695 |
Re: [KOG] bijou: A jewel, a trinket; a ‘gem’ among works of art. (OED)

On 1/30/07, gachtem <gachtem@...> wrote:

> Can you report on the progress of the Bijou?

> A posting on another forum led me to believe it will be a lugged
> version of the P/R. If this is true, will it be designed around 584
> wheels? I need something to wrap around my rocket wheels once the rims
> get across the ocean.

Hmmmm... I think rocket wheels would look better
on a TIG'd frame. But what do I know?

Here's an executive summary:

Same head lugs as the Model G (and D and F).

If you remember back, those lugs are designed to be used
with a 28.6mm steerer. If we do that, then it will be a
simple matter to use the exiting forks for those who
want a threadless fork. A full forty percent of Mod. G
buyers chose threadless forks. The nice thing about
9/8" steering is that we can make the forks lighter than
AND stiffer than a threaded 1" fork. I find that very
appealing. Those who have P/Rs can comment on how
light a 9/8" steel fork can be.

And, as we did with the G, there will be threaded forks as
well. Choice is good.

The seat lug we used on the G was the LS 205:

http://kogswell.com/ls/L6_files/image024.jpg

For the Bijoux, we're going to use the 300R:

http://kogswell.com/ls/L8_files/image008.jpg

Which is designed for a 25.4mm top tube. The tube
tube will 28.6 and the head and taper to 25.4 at the
seat. This will lighten the frame a bit.

The down tube will be 31.8 at the head and 28.6 at
the bottom bracket. The added size at the head
will stiffen up steering and the reduced size at the
BB will soften the ride and lower weight. Yah-Hoo!

There will be two sizes to start: 59.0 and 56.3.

There will be two wheel sizes: 700C and 650B.

And all of those will be available in 132.5 horizontal
dropout, a la the P/R -and- 120mm 'track' dropouts
of a new and better design.

Everything else will be Kogswell Standard: fender
and rack mounts. The racks will finally appear in
and they will fit the forks. The pump pegged has
been moved to the back of the seat tube.

The only other thing to talk about is the name.
I'm going to change it from P/R to something like
The Kogswell Variable Geometry Frameset.
The P/R's geometry has been wildly successful
and we intend to used it up and down the model
line. By the end of the year it will include sets
designed for five different wheel sizes and a variety
configurations; mixte, folding, etc.

If you're new to Kogswell, I invite you to make
comments here on this thread. Ask questions
and state your opinion. That's how we make
things better.

And speaking of new, we picked up two new
dealers in January:

We're delighted to add Old Spokes Home in Burlington,
Vermont to the growing dealer list. Owner Glenn Eames
and manager Michael McDonald are experts in the
Yankee tradition of restoration and reuse. I've had
a ton of fun getting to know them and I encourage
everyone to meet them and welcome them to the
Kogswell Owners Group.

The other new dealer is Tyler Oulton who runs Paramount
Bicycle Repair in Somerville, Mass. Tyler is also the
responsible type who's dedicated to keeping usable
bikes on the road and out of the landfill. And he has
PW spoke machine so send your custom spoke
requirements his way.

I think that's it.

If I can answer questions, pls bug me til I answer.
The district is putting pressure on me to come back
and teach next year. They have two new schools
opening and they need the help. I'm thinking about
a morning only job because I'm not really happy
unless I'm up to my ears in stuff to do. So if you
want to have a long chat, now's the time. I've been
subbing a lot lately but I'm also by the phone a lot
too.

Matthew



Tue Jan 30, 2007 8:05 pm

kogswellreader
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Message #12359 of 24695 |
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Matthew. Can you report on the progress of the Bijou? A posting on another forum led me to believe it will be a lugged version of the P/R. If this is true,...
gachtem
Offline Send Email
Jan 30, 2007
4:59 pm

... Hmmmm... I think rocket wheels would look better on a TIG'd frame. But what do I know? Here's an executive summary: Same head lugs as the Model G (and D...
Kogswell Cycles
kogswellreader
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Jan 30, 2007
8:06 pm

... Matthew, Sounds Tasty!! Will the geometry be the same as the current P/R frames? Same choice of forks? Ryan...
Ryan Watson
rswatson42
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Jan 30, 2007
8:15 pm

... Yep. MG...
Kogswell Cycles
kogswellreader
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Jan 30, 2007
8:46 pm

... Racks plural, Matthew? As in, both P and R racks? Or just P? Murray...
mlove@...
murraylove
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Jan 30, 2007
8:18 pm

... I think of them as small and large. MG...
Kogswell Cycles
kogswellreader
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Jan 30, 2007
8:42 pm

... Holy cow, you're a tease, Grimm. Got any photos of the small? Murray...
mlove@...
murraylove
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Jan 30, 2007
9:37 pm

... No. But when I get one, I'll share it. MG...
Kogswell Cycles
kogswellreader
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Jan 31, 2007
6:29 am

If the rack design isn't finalized yet: I think I've said this before, but I think it should have double threaded brazeons for light mounting on at least one...
Adam Alpern
adam_alpern
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Jan 31, 2007
7:09 pm

... 584 ... rims ... Uh...I'm new to Kogswell and I am wondering - will the Bijou plane? Bill...
raymourew
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Jan 30, 2007
9:12 pm

... All frames plane. If the right person rides them. Are you the right person? MG...
Kogswell Cycles
kogswellreader
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Jan 31, 2007
6:28 am

... plane? ... Matthew, Good answer to a badly worded question. Actually, I'm not the right person for a Bijou (yet) because I don't think I'm covered by the...
raymourew
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Jan 31, 2007
4:13 pm

What is this planing you speak of and do you have a wiki-link for it?...
highlyselassie
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Jan 31, 2007
6:03 pm

... Your best bet would be to search for "planing" at bikelist.org. I would pay particular attention to posts from alex, Kogswell, and Jan Heine, but many...
Strap
gilstrap72207
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Jan 31, 2007
6:16 pm

... it? ... on ... bicycle ... debate ... Yup, Keith beat me to it. The most detailed discussions of planing have been in Bicycle Quarterly (formerly known as...
raymourew
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Jan 31, 2007
6:51 pm

... Hi, Bill. I think in order to design a frame to plane, we'd first need to have a satisfactory, agreed-upon definition of the term, and that's been lacking...
mlove@...
murraylove
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Jan 31, 2007
6:09 pm

... need to ... biomechanics ... climbing ... stiff to ... be one ... P/R, with ... just fine, ... in this ... From what you've said about planing so far, it...
highlyselassie
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Jan 31, 2007
6:30 pm

... ...hence my highly qualified answer. I agree that it *sounds* pseudo-scientific,and that we're sorely needing an operational definition here, but I figure...
mlove@...
murraylove
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Jan 31, 2007
6:50 pm

... definition ... Leeway?. Science is science and notions are notions, until he can prove by scientific method that flexing of the bottom bracket in a certain...
highlyselassie
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Jan 31, 2007
7:43 pm

... to ... And what exactly isn't "positive" about "produc[ing] a feeling that some people may find attractive"? That would be one of the primary design goals...
mlove@...
murraylove
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Jan 31, 2007
8:39 pm

... snip ... Jan can provide them. Back issues of Bicycle Quarterly which contain the articles of interest are avaible through the Vintage Bicycle Press ...
raymourew
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Jan 31, 2007
8:44 pm

... Having re-read my answer it sounds a bit flippant. All I meant was that I think that planing is an interaction between rider and frame. ... My guess is...
Kogswell Cycles
kogswellreader
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Feb 1, 2007
8:03 am

... So those no body-fat, fast twitch world class physical specimen pro bike racers might be merrily planning along on their carbon fiber bikes? John...
prester_john_in_cathay
prester_john...
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Feb 1, 2007
4:17 pm

... Who do you think those flexible old-school-diameter-tubing road racers were designed for in the first place?...
Steve Palincsar
palincss
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Feb 1, 2007
5:50 pm

... they couldve been planing on their non-oversized steel bikes, and the current riders planing on their carbon fiber bikes... heck, they might even plane on...
joel metz
magpiesf
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Feb 1, 2007
6:45 pm

... If I'm right about planing (and why wouldn't I be - HA!), then the answer is: they might - but it still is an interaction between bike and rider so a racer...
Kogswell Cycles
kogswellreader
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Feb 1, 2007
6:26 pm

... Sort of. But I wonder if you're not tending to remystify something that's only just now beginning to emerge from the thickets of mystery and supposition. ...
mlove@...
murraylove
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Feb 1, 2007
6:52 pm

... There's no doubt that OS D/Ts are too stiff. So moving away from them is an absolutely good thing. But engineering planing? If I think it is difficult and...
Kogswell Cycles
kogswellreader
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Feb 1, 2007
7:52 pm

... Agreed. ... Nope. My point was it may not be an engineering problem at all, let alone an intractable one--that by making the bike more flexible you would...
mlove@...
murraylove
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Feb 1, 2007
8:06 pm

... Ah. OK. Well, I am going to adopt the French method. L'll start whittling away at tubes and see if anything good happens. MG...
Kogswell Cycles
kogswellreader
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Feb 1, 2007
8:15 pm
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