96g saddle-seatpost combo & new bike weight 3,392g

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donald
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Joined: Sun Sep 11, 2005 11:32 pm
Location: san francisco ca. usa

by donald

victorduraace, I have talked about my wheels/rims a number of times here on WW.I use magnesium clincher rims made by a friend of mine, a metallurgist, PhD/scientist, years ago he worked for Lawrence Livermore national Lab. I have been using these rims over 25 years. stock they are around 275 grams. the one pictured is modified to 245 grams, I have gone lighter for front rims. No significant problems in 25 years of using them. I hope that answers your question. You can also "search" for my bike here on WW, hopefully that will lead to where I have talked about my rims/wheels.

dereksmalls
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Location: New Zealand

by dereksmalls

He's not still making them is he Donald?

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xena
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by xena

KarlC wrote:Thx xena, does it only come in blue ? I would need black.


Hi Karl
http://www.ebay.co.uk/itm/20mm-x-40m-Wa ... 51bb812b37
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xena
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by xena

dereksmalls wrote:He's not still making them is he Donald?


I would love a set of those rims, truly remarkable clincher weight. I like the fact that they are already way light yet Donald tunes them even more.
That's what I am talking about.

its very difficult to do something original. Usually someone has already done it. But the small details are what its about for me now trying to create something original.
I go over to here sometimes http://www.forum.light-bikes.de/forumdisplay.php?f=71 some of these guys are really pushing it. Norbet's 500grm bike is bonkers and his own carbon brakes. Crazy but cool.
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KarlC
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Location: De Portola Wine Trail Temecula CA

by KarlC

xena wrote:
KarlC wrote:Thx xena, does it only come in blue ? I would need black.


Hi Karl
http://www.ebay.co.uk/itm/20mm-x-40m-Wa ... 51bb812b37


I think this would be what we would have in the USA,

http://www.ebay.com/itm/GAFFERS-STAGE-T ... 3a93052ef9

Here is some info I found about Gaffa tape .......

Gaff Tape (or Gaffa Tape, or Gaffer's Tape) is CLOTH-BASED, designed to be a temporary hold and so does not leave residue behind when the tape is removed, and also designed to tear with a clean edge and to tear easily with no need for cutting tools. It will tear across to separate a piece for use, and it will tear the long way to make thinner strips out of a wider roll.

Gaff Tape was designed for the film industry and is now primarily used in entertainment (film, theatre, music, live production). It is mostly used for taping down cables, but also as temporary fixes to hold gear together when it breaks. It prefers to stick to clean, smooth surfaces, but it will also stick to skin and clothing. It does not stick to concrete, textured hard vinyl (like the dashboard of a car), or dirty and dusty surfaces. It will unstick from skin when you sweat.

There are also better brands than others. 3M is not the best brand for Gaff Tape, regardless of its reputation for other types of tape. Suretape is the best brand; it has the best adhesion, the best residue-removal, and the best tearing abilities. Pro Tape is cheaper, and you can tell. In the case of Gaff Tape, you really do get what you pay for. 3M isn't even used in the industry at all, so that should tell you something about its quality.
C64 My Sixty 4 SR EPS 12

xena
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by xena

Tape is a personal choice. I used to use a fizik all the time.
Obviously the tape I am using is not really meant for bars but it does work for me and just does not get any marks at all and is a tons lighter than Cycle tape. I have tough skin on my hands from doing lots of chin/pull ups so having thin bar tape does not cause me any issues in fact I prefer it but it took a while to get there.
I was using just some very thin cloth tape stuck down at the ends. It weighed 2grams "crazy" but it did get a bit frazzled after a few rides I still have it on the end of my bars past the shifters.
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donald
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Location: san francisco ca. usa

by donald

dereksmalls, Fred Johnson is no longer making the rims, I still have some never built up, the best rims I have ever used. as far as thin handlebar tape, one can place a little of that thin white packing stuff just on the top part of the bar, then tape, the stuff weighs about 1 gram per handlebar. Also some pro's race without gloves, and so if you use gloves, like most people, that provides more than enough padding.

dereksmalls
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Joined: Tue Aug 02, 2011 9:20 pm
Location: New Zealand

by dereksmalls

donald wrote:dereksmalls, Fred Johnson is no longer making the rims, I still have some never built up, the best rims I have ever used.
Twist his arm, tell him he has a niche market here on the board! :thumbup:

adrianlmp1246
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Joined: Fri Apr 24, 2015 2:32 am
Location: UCSF

by adrianlmp1246

AMAZING!
what is your final weight goal? or is this more of a never ending work in progress build?
also what kind of pedals are you running?

donald
Posts: 294
Joined: Sun Sep 11, 2005 11:32 pm
Location: san francisco ca. usa

by donald

I don't have a final weight goal, I'm sure it will end up a little lower weight as time goes on. the pedals are Aerolite, mine weigh 65 grams the pair. The cleat is also very light, a durable plastic/nylon. They have been around for 30 years or so. I actually raced with the owner, Bill Goldfoos in the early-mid 1980's, we were on different teams but I knew him. Fred Johnson last made rims over 20 years ago. He had some personal family issues he was dealing with and also was not the best at marketing them and of course this is before the internet, and so he stopped making them. At the time he also made a magnesium crank set I had two sets, they were about 345 grams. I broke a crank arm once, and so only ended up using them about two years. I guess I could try to talk to someone like Marcus Stork, try to convince him to build me a custom fork, perhaps around 180 to 190 grams, and if he did it would probably cost around $ 6,000. just for the fork. But I don't have any plans to do that at this time.

xena
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by xena

Donald, what's your opinion/view on Gunter mai bike http://antranik.org/worlds-lightest-road-bike-at-2-7kg/

be really good to hear your thoughts and opinions.

and can you sell ,me a set of fred Johnson rims :D
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donald
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Joined: Sun Sep 11, 2005 11:32 pm
Location: san francisco ca. usa

by donald

xena, I wish I could sell you some rims but I really don't have many extra left. Over the past 25 years I have sold and also given away rims to friends and also in exchange for ww parts, etc. The extra ones I have left I am going to save and I know that over time I'm sure I will eventually use them. I remember when Guenther had his bike. He rode that bike quite a bit. He had a 6 cog freehub, 11-16, not sure if he ever rode longer, steeper hills with it. He modified virtually every part. What Fairwheel Bikes did with it is just the best I have seen in a true WW bike, even if it cost $ 45,000. I personally would not give up my index shifting. I don't think the Fairwheel version was ever on the road more than a few rides. A light bike needs to be proven on the road with significant miles.

xena
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by xena

No problem Donald.
Yes Gunter used to ride his bike a lot from articles I have seen. That's got to be the point of having a WW bike is that you ride it and it does not fall to pieces.
I switched to a down-tube "modolo" on my front after seeing your bike. I do prefer the normal red paddle shift for the rear mech though.
But I always ride on my 53t so down-tube makes sense on the front mech and saves quite a bit of weight as well.
Fairwheels did do a great job with Gunter's bike. I'm sure it could hack it
:beerchug:
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dereksmalls
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Location: New Zealand

by dereksmalls

I love the Wert crankset on Gunters bike. My favourite part on it

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HammerTime2
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by HammerTime2

donald, what happened to the Dash saddle? Why did you not use it for the saddle-seatpost combo? Would not it have been lighter?

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