Scott Hlill Climb bike 7.0 lbs

[djconnel]

As far as I can tell it's just a traditional thing: people's posting of their own builds go in Gallery. Were I to post about his build it could go in Road, however. Like all ordering systems, there ends up being some arbitrariness about it, but Frankie and the other admins do a great job of trying to temper the chaos.

[wally318]

PARTS LIST

Frame Scott addict 54 cm slightly modded 703.4 grams

Fork Edge 1.0 172 mm steerer 261.0

Headset custom 1 1/8 needle bearing alum/delrin 32.1

Bottom bracket Turcite bearings/tungsten disulfide
coating on aluminum spindles 18.1

Stem Syntace F99 modded 81.8

Bars Scmolke SL cut 114.4

Bar tape 1/4 " closed cell foam-contact cement 1.6

Seat binder Scott modded 6.6

Seat post/seat Samu special combo with a suspended 97.2
saddle shell

Brake lever Tektro cross top modded 18.8

Brake caliper CLB compact modded 54.7

Brake cable/housing plastic/power corz 3.65

Shift lever BTP carbon/campy modded 6.1

Shift cable/housing as above 4.8

Rear Derr. Huret jubilee/Shimano DA hybrid 66.7
ultra modded

Cranks Secialised S-works modded 314.3

Chainring Custom ring/spider combo 34T-7075 47.4

Chain KMC SL 98 links 210.9

Pedals Aerolite 1988 model modded to current 68.0
level +

Tires Tufo elite 120's 237.7

Gllue TBA-not done yet ?

Wheels Edge 25-1.0 188/190 grams 713.1
Pillar ti spoke/alloy nipples
Custom hubs 7075 flanges and
carbon spacer tubes(by edge)
7075 axles/parts
ceramic hybrid bearings /anodized
Ft. 42.6 Rr. 127.5 grams

Skewers Contol tech race modded 27.4
with custom LH rear drop out shim

Cassette Alloy 7 spd 13-21T trimmed from 9 spd 12-23 T 77.8
to work with rear derr. shifting limitations

Lock ring Hi-E delrin LH thread 2.75
_______
3170.3 grams


Glue weight to be added later. I do not add weight of air to any of my projects.
Just the weight of the parts/air is a given.

[djconnel]

What "mod" did you do to the frame? Impressive.

[wally318]

Carbon cable stops except for rear derr. were removed with a heat gun and a
7075 DT shift boss was machined and bonded. Head tube and BB shell were shortened
for weight and crank spindle size limitations. Front Derr. hanger was removed. Rear Derr.
hanger was machined and re-anodized. As well as a list of small little changes.

[53x12]

Nice build!!! I am quite impressed by your build.

But what about a bottle cage and a rear brake to really qualify as a ww rideable bike?

[djconnel]

I am super-impressed. What tools do you use for your machining? I can't imagine using anything more sophisticated than a Dremel, but that's just me. More into modeling and simulation than into actually making things (I burned out of making things in grad school ).

Dan

[wally318]

First of all thanks for your positive comments.

Next, there will be no changes to this bike to fit anyone's fancy's or whims.
It was built as a serious hill climb only bike, and anywhere that it won't be allowed to start
on account of 1 brake it'll also fail on the weight issue.

There is a plastic bottle cage for it made from a 500 ml. plastic rubbing alcohol bottle
with aluminum bolt that weighs 12 grams. It'll hold the small thin plastic bottled water
containers you get in the grocery store that weigh 10-15 grams.
I can't see spending good money on a 4.5 gram carbon cage that needs a 70-80 gram bottle to fi it.

I do all of my machining on a 3 in 1 lathe/milling machine. I'll post a pic and a messy one of my shop.
It's very humble but efficient 8 x 10 ft.

[cmh]

Unreal...very impressive.

[djconnel]

First, I LOVE your water bottle solution. Brilliant!

Next, there will be no changes to this bike to fit anyone's fancy's or whims.
It was built as a serious hill climb only bike, and anywhere that it won't be allowed to start
on account of 1 brake it'll also fail on the weight issue.

Well, I had the feeling you were from Britain where there is a culture of hillclimbs, but Lance is from the US, and in the US this is not true. There is no weight limit on bikes in USAC sanctioned races unless low mass contributes to a lack of safety as viewed by the referee. However a combination of rule 1M3(b):

1M3(b) For road, cyclocross and MTB races, only a bicycle with a freewheel and one working brake on each wheel shall be used, except as allowed elsewhere in these rules.

and, for individual time trials (but not mass-start hillclimbs):

3E2 Road bicycles shall be used. Bicycles with a front hand brake and fixed wheel may also be used.

are consistent with Lance's comment. I run a hillclimb series here (the Low-Key Hillclimbs) which has USAC insurance but is not held under USAC rules, as it's a "training event" as opposed to a sanctioned race. In the series, the bike would be allowed as long as you could demonstrate it was able to stop adequately.

[synchronicity]

That's an awesome build, and work like this doesn't come up that often. Congratulations!

Being a "cable guy", I coudn't help but notice you are using nylon 3/16" nylon tubing with a 1 mm wall thickness for your cable housing... yes I even went to Parker and looked up the specs... are you aware that this has practically no compressive strength (~100Mpa)? In comparison, most aluminium alloys are 500Mpa, good steels and Titanium are over 1000Mpa and the alumina we use in our housing has a compressive strength of 2000Mpa...

I know it's a pure climbing bike, but one legitimate question I have is: "do the brakes even work?"

[WideAMG]

awesome achievement

looking at this build i thought, would it make sense to toss the seatpost clamp and just glue the post to the frame? i mean once it the height is set you should be good to go. shouldn't we all do this?

[53x12]

I know it's a pure climbing bike, but one legitimate question I have is: "do the brakes even work?"

That is a great question that I had also thought about. But I am sure that Wally will assure us all that it works perfectly fine and as it is meant to. If he enters a race where one has to prove the brakes work, well he will also fail on the weight issue. What about the issue of using Pillar Ti spokes on a climbing bike. Imagine the flex one will experience when powering up a steep gradient. Unless the OP is a dwarf that weighs 40kg. Nice bike, but seems more like a beauty queen than anything else.

[Epic-o]

It would be interesting to see a closer pic of the BB work...

BB30 cranks+Standard BB...I saw a pic some months ago of a italian guy that modified a S-Works MTB frame to make BB30 compatible

[seahuston]

excuse me if this has already been asked but is that a BB30 crankset in a standard frameset? Explain please...

[djconnel]

Addict is not BB30. It's either a "standard bottom bracket" or a "Shimano integrated bottom bracket". But the BB30 can be made to fit -- Starnut showed such a system.