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Weight Weenie help needed....(11 posts)

Weight Weenie help needed....DannyBoy
Sep 4, 2002 6:27 PM
I know weights aren't that important, but the guy who's building me a new Foco frame did some calculations based on the proposed full spec.

I was suprised at how light the bike was for steel (Columbus Foco), although the frame is a pretty small compact.

Based around Record it seems to be coming in around 7213g = 7.21kg = 15.86lbs.

I've checked most of the weights from m'frs sites and here's what I came up with, anything look off to you?? I just do see how a steel bike with good, but not particularly specialised bits could be so light???

Foco frame 46cm J Foster 1477
Fork Reynolds Ouzo Pro 420
Headset Chris King 1 1/8th" 98
Bottom Bracket FRM Ti 103mm 143
Seat Pin Thomson 400mm 266
Stem Cinelli Grammo 120mm 130
Handle Bar Cinelli Solida 42cm 200
Saddle SLR 135 135
Pedals Speedplay X2 198
Brake/Gear Levers Record 342
Brake Calipers Record 308
Front Mech Record 91
Rear Mech Record 187
Chainset Record 632
Chain Record 247
Cassette Chorus 220
Wheels American Classic 420's 1561
Tyres Continental GP S.Sonic 280
Inertubes Continental GP S.Sonic 108
Cables, RimTape, Bar Tape Misc 170

Total Weight (g) 7213
pretty closeDougSloan
Sep 4, 2002 7:14 PM
Let's see, these items seem a little light:

chain, should be around 290
tires, if 23mm, would be around 310, 20's would be about 290 (I've weighed them before)
handle bar seems a little light
I think the King headset is more like 105g
a Grammo is more like 150g

Other than that, it looks pretty close. I'd guess you'll come in around 16.5 lbs when done. Don't forget air and grease!

Doug
re: Weight Weenie help needed....str8dum1
Sep 5, 2002 9:57 AM
the stem will be more than 130 closer to 160+
there hasnt been a 135g slr since 99, they are closer to 150 now, i have a 40cm solido bar and its 200, the 42 will be closer to 215
bar tape depending on type can be up to 140g (like my neo pro off the front).
i dont think that campy cranks use a 103mm BB. I think they use a 109. So add another 15g or more there.

cable and houseing will be ~150g alone.
The HS will be closer to 120g, maybe more being its 1.125.
skewers will be another 100g, computer will be another 70g, bottle cages will be another 80g (that stuff is there is 1/2 pound already)
Ya i'd say closer to 17 pounds realistically. still not bad for a steel frame.
re: Other stuff that may not be included...Mike Prince
Sep 5, 2002 10:55 AM
But I don't know the weights since I an definetely not a weight weenie:

Downtube or headtube cable adjusters
Seat collar clamp if not included in frame weight
Headset spacers
Cable donuts (if used)

Also, it looks like these weights (most of them) look like manufacturers spec weights. Most will tend to be +/- (usually +) something like 5% as:

1. There are normal manufacturing tolerances,
2. Extruding equipment and other equipment used to mfg a lot of stuff (handlebars, rims, tubing, saddle rails, spokes, cables, etc) wears over time, resulting in heavier than claimed parts,
3. Some manufacturers are not totally honest about weight as this has turned into a hot selling point.

Still, sounds like one hell of a bike. Enjoy
Thanks....DannyBoy
Sep 5, 2002 12:48 PM
Thanks for your comments - in short I'd agree about mfr's claimed weights etc.

Still going to be a nice ride, especially as weight isn't really an issue. I was just curious.

You wanna have a look at www.weightweenies.starbike.com !!!

Thanks.
Are you the guy?filtersweep
Sep 5, 2002 12:57 PM
5'11" riding a 46cm frame? What are the benefits of such a setup?
re: Weight Weenie help needed....dickruthlynn
Sep 5, 2002 7:06 PM
My SLR saddle weights 147g
re: Weight Weenie help needed....opencl
Sep 5, 2002 7:50 PM
mine is in the upper 140s too.
re: Weight Weenie help needed....schills
Sep 6, 2002 9:04 AM
Mine weighed in at 128. Combined with a Use Alien post the combo weighed 254 grams. Less than most saddles alone.
2 SLR'sSkip
Sep 6, 2002 7:31 PM
I have two SLR saddles; one all CF (Evolution), and one sl. padded (reg. SLR).

Their weights are:
SLR Evolution - 118.21 g
SLR - 133.86 g
just built a similar bike.....slasher
Sep 6, 2002 3:23 AM
deda eom 16.5, full record, K's, newton bar/stem.
17 pounds exactly, with pedals/cages/computer