Showing posts with label Build. Show all posts
Showing posts with label Build. Show all posts

Home Mechanic Toolbox

Saturday, July 19, 2014

If you are interested in building up your own bike, or would like to start doing your own maintenance and repairs, you have the exciting opportunity to get some new tools! But what tools do you need? What brand should you get? How much will it cost?

There are three main bicycle-specific tool manufacturers. They are Park Tool, Pedro’s, and Spin Doctor. There are others (Abbey, Avenir, IceToolz, Super B, Titan, etc.), but they aren't mentioned as often. Many will say that Park Tool is the gold standard, but those same individuals will admit that certain tools from other manufacturers are superior to those available from Park. For simplicity, and because most of my tools are Park, the prices and pictures represent Park Tools.


There are basically two methods to obtaining your tools. You can purchase a complete set, or buy the tools one-by-one. Typically, buying a set will be less expensive, but you will end up owning tools that you didn’t necessarily need (and perhaps missing some tools that you did). Once you know which tools you need, you can compare the cost of a complete set with purchasing them piece-by-piece.

Some of the tools you’ll need are specific to the bike and components you own (e.g. a bottom bracket tool). But many of the tools are universal (e.g. a chain break). I’ve listed the tools I have found useful and sorted them into four categories, irrelevantly utilizing the acronym CARB to define Cleaners, Adjusters, Replacers, and Builders.


The Cleaner


Item Price Description
Chain lube $ 8 Lubrication for the chain
Brush set $ 18 Brushes to scrub cassette, chainrings, chain, and derailleurs
Degreaser $ 18 Removes grease from cassette, chainrings, chain and derailleurs
Chain scrubber $ 24 Scrubs and degreases the chain
Total $ 68


Brush Set

Chain Scrubber


The Adjuster


Item Price Description
Spoke wrench $ 7 Replace or tighten spokes and true wheels
Anti-sieze compound $ 8 Reduce friction in threaded connections (e.g. pedals)
Grease $ 8 For moving connections (e.g. headset and bottom bracket)
Carbon paste $ 13 For tight carbon-to-carbon connections (e.g. seat post)
Pedal wrench $ 14 Tighten, remove, or replace pedals
5 N·m torque wrench $ 28 For 5 N·m torque requirements (e.g. stem and handlebars)
0-70 N·m torque wrench $ 45 For higher-torque requirements (e.g. pedals and crankset)
Total $ 123

Spoke Wrenches


Torque Wrench (5 N·m)

Torque Wrench (0-70 N·m)


The Replacer


Tool Price Description
Cassette lockring tool $ 8 Replace the cassette
Chain checker $ 10 Check to see if chain needs to be replaced
Chain whip $ 20 Holds the cogs while using the cassette lockring tool
Bottom bracket tool $ 21 Used to install a new bottom bracket
Chain tool $ 30 "Breaks" the chain so it can be replaced
Cable/housing cutter $ 33 Cut cables and cable housing for shifting and brakes
Stand $ 180 Holds the bike secure above the ground
Total $ 302


Cassette Lockring Tool

Chain Whip


Chain Checker

Chain Tool


Stand

Cable/housing Cutter


The Builder


Tool Price Description
Carbon saw blade $ 9 Cut the carbon steerer tube and carbon seat tube
Saw guide $ 35 Ensure straight steerer tube and seat tube cuts
Truing stand $ 99 Holds wheel and indicates out-of-true locations
Headset press $ 153 Install headset and bottom bracket
Total $ 296


Saw Guide

Truing Stand


Other

Some other tools and accessories you’ll need that you probably already own include electrical tape, hex wrenches, open-end wrenches, rags, scissors, screwdrivers, and zip ties. There are also some accessories that make life easier, like a handlebar holder ($18), work tray ($32), and cable stretcher ($40).


Cable Stretcher

Handlebar Holder

Did I forget anything? Let me know and I'll add it to the list.

New Bike Build: Part 4

Wednesday, February 19, 2014

Bike Build Part 1 Bike Build Part 2 Bike Build Part 3 Bike Build Part 4

Rufus Wright, yes... his name was Rufus

Apologies for the delay since the last bike build post. When I wasn't able to spend time on the bike I opted instead to write about all things bike-related. Now that the docs have cleared me to ride the trainer, all I want to do is ride -- and so the writing has been back-burnered.


Before we get started, a quick side story about the wrench photo above. In 1891, Rufus Wright and his son-in-law, Fred Morgan, started Morgan & Wright, a bicycle tire manufacturing company in Chicago. They also produced other bike components and accessories (like the wrench above). The company was very successful, later moving to Detroit in 1906 and bought by U.S. Rubber Co. in 1911, where their manufacturing techniques were utilized in the manufacturing of tires for automobiles. Rufus was a millionaire but lived modestly and was loved by his ~2,000 employees. Rufus married Helen Allen and they had two daughters. A brilliant inventor and craftsman, Rufus was also an accomplished artist. He spent a lot of time volunteering to educate poor boys in Chicago. He is noted for saying, "I never had any ambition for property beyond a comfortable recompense for my services and what I have I want to spend for the welfare of others."

Painting by Rufus (sold for $1,625)

In 1900, at the age of 67, Rufus was shot in the neck by a woman named Louisa. She was drunk and had asked Rufus to come over. They were talking when Louisa mentioned that she had a gun. He asked her to give it to him and after some convincing finally showed it to him. She refused, however, to hand it over and he struggled to take it from her. During the scuffle he was shot.

Louisa's words: "He fell back on the sofa and gasped that he was shot. I laughed hysterically and told him he was alright. He insisted that he had been wounded and begged me to call a doctor. I told him he was dreaming... I saw at a glance that the revolver had done deadly work, but I could not bring myself to tell anyone of the occurrence. I waited on Mr. Wright for about two hours before I summoned a doctor."

(green text to indicate drunken, slurred speech)

When help arrived, Rufus insisted that it was not Louisa's fault, but the police thought otherwise. He died shortly after from the wound. Sceptics suppose that Louisa had some mental troubles, was very drunk, and had told Rufus that she was going to kill herself. Rufus went to see her in an attempt to save her life – and in the process lost his. Even in his death his desire was to help Louisa, insisting that she not be charged with murder. In his eulogy, Rev. J.V. Blake said of Rufus, "Chicago has lost a mighty friend of charity in his death."

Rufus' headstone in Akron, Ohio

So why do I care? Well, he made a cool looking wrench, had a funny name, a mysterious death, and my great-great-great-grandfather's brother, George Wright, spent some time in Chicago in the late 1800s -- so there is a chance (albeit a small one) that I'm related to Rufus.

Anyway, enough somewhat-accurate, minimally-relevant, semi-interesting history. Back to the build.

When I was a kid, I loved taking things apart to see how they worked. Often, my curiosity resulted in my parent's disapproval, like the time I completely disassembled my sister's brand new home stereo, just two days after my father had purchased it for her birthday. I can still remember how angry he was when he discovered me in her room surrounded by screws, plastic covers, resistors, capacitors, wiring, etc. -- a screwdriver in my hand and a grin on my face. "It's alright dad, I'm going to put it back together." Somehow, he knew that when I finished there would be pieces left over... and the stereo would never work again.

Oops.

But I learned a lot from my youthful confidence, and the countless mistakes it resulted in. I have little doubt that the success I've had as a mechanical engineer could be attributed at least somewhat to the curiosity that drove my parents crazy for years. Problem solving techniques, out-of-the-box thinking, and the willingness to simply try something different have been huge in my professional development.

I have very limited experience with building a bike. But as I did so many years ago looking intently at my sister's stereo scratching my head with some needle-nose pliers, I'll give it a shot and see what happens...

Seatmast Clamp / Saddle / Di2 Battery


The Noah frameset employs the integrated seatmast and comes with the necessary clamp. The clamp fits snuggly to the seatmast and has a single hex key bolt to secure it. The saddle is held in place by a single hex bolt, accessible from the top. There are three saddle clamp positions for the hex bolt and a notched-hole for the Di2 wire that attaches to the battery.

Seatmast clamp shown by professional hand model

I was not a fan of the hex bolt. With the saddle installed, it was difficult to tighten the bolt and I didn't like the appearance of it. Plus, my multi-tool doesn't (and to my knowledge, no cycling-specific multi-tools do) have a wrench in it for that kind of bolt. I decided to trade it out for a knurled stainless steel hex key bolt, which makes installation much easier and has (in my opinion) a "cleaner" appearance. And if I need to adjust the saddle during a ride, I can use the multi-tool.

Replaced bolt shown by professional finger model / new bolt installed

The Di2 battery mounts to the seatmast clamp behind the seat tube under the saddle. An unfortunate issue is that whenever the battery needs to be removed for charging, the saddle is sort of in the way -- I won't have to loosen the saddle to get the battery out, but it is a tight fit. The battery charge is reported to last 600 to 1,500 miles (depending on how often you change gears), so it isn't a huge deal.

Di2 battery connector mounted to seatmast clamp / saddle and battery installed

Most Di2 batteries are installed below the bottle cage on the down tube, but the Noah places Shimano batteries behind the saddle and Campagnolo batteries on the down tube. The aerodynamics are theoretically better with it behind the saddle, and there's less chance of water / dirt / grime damaging it -- but I'm not sure I like the look of it up there and though I don't use one, it eliminates the ability to use a seat bag. I may end up swapping it out for an internal battery installed inside the seatmast.

Guidelines on the SLR saddle rails make adjustments easy

Using a hex key through the slot in the Flow saddle, installing, adjusting, and tightening were quick and easy. When the build is complete, I will adjust the saddle, stem, and handlebar positions to reflect my bike-fit measurements. At that time I will cut the seatmast for the necessary saddle height, hopefully remembering to measure a few times before grabbing the hacksaw.

Headset / Steerer Tube / Stem


The Noah comes with an FSA integrated headset with a nice shallow top cap about one-third the height of the monster that Specialized uses on the Allez. The Noah's head tube is 30 mm shorter than the Allez, but still a tad tall for my taste at 175 mm, so a shallow top cap helps with getting the bars nice and low.

I greased the necessary parts of the headset (the bottom race, top race, bottom bearing, top bearing, and the bottom and top surfaces of the head tube). The bottom race is already pressed on the steerer tube by Ridley. The lower bearing is installed angled-side-up on the steerer tube, and slid down to mate with the lower race, then inserted into the head tube. The top bearing is installed angled-side-down, slid down the steerer tube to the top of the head tube. The upper race slides down the steerer tube to mate with the top bearing. Then the top cap (with internal O-ring) slides down to cover up the top bearing. It's a very quick and easy installation -- the hardest part is probably remembering which way the angled bearings face -- and making sure none of that "gross green junk" (wifey's words) gets on the couch.

Bottom bearing on steerer tube sliding into head tube / top bearing and race

I stole the 3T ARX Pro 110 mm, 17-degree stem from the demolished Allez and decided to try it out on the Noah to see if the length would work before buying a new stem. The Allez had a reach (horizontal distance from bottom bracket to top of head tube) of 397 mm and the Noah has a reach of 390 mm. So it may end up that I need a 120 mm stem to align with my previous bike fit, but with the stack (vertical distance from bottom bracket to top of head tube) and head tube both being shorter on the Noah, the 110 mm stem may just work out perfectly. With the Noah's head tube angle being 73.5 degrees, the 17-degree stem (flipped) makes the stem just about parallel to the ground. If I keep it, for aesthetics I'll probably use some acetone and a rag on the stem to remove the 3T logos (and maybe the stripe too).

With the back injury and unknown flexibility I fought the urge to slam the stem and cut the steerer tube accordingly. I added a 7 mm spacer on top of the headset and then another 5 mm spacer on top of the stem, giving me 12 mm of available "comfort adjustment" in case I find it's needed. If my post-recovery flexibility can handle the slammed stem I will remove the spacers and re-cut the steerer tube.

Headset installed with shallow top cap / spacers and stem setup

With the headset, spacers, and stem installed I marked the steerer tube with a paint pen and then disassembled it all so I could make the cut. I removed the top spacer to mark the cut line because I want the steerer tube to be slightly (2-3 mm) lower than the spacer to correctly install the headset preload expander. I used a hacksaw guide made by Park Tool, and a blade specific for cutting carbon fiber.

Steerer tube cut line just above stem / hacksaw cutting guide

The cutting guide clamps into a vice to hold the steerer tube steady while you cut. A standard hacksaw blade will work provided it has small teeth and is sharp. You want the cut to be straight and smooth, and remember not to inhale the carbon fiber dust (I think it kills you). Once cut, you can use a file or sandpaper to make the end nice and smooth.

Cutting the steerer tube / don't inhale the dust

After cutting it, I used the little trick of writing my info on the hidden portion of the steerer tube. It doesn't prevent theft, but it can help prove ownership if the bike is recovered. Taking pictures of everything is important too, including (especially) the serial number. Photo documentary, receipts, and a detailed list of bike components greatly assists with insurance claims too. I have a template you can download in my Insurance for Cyclists post.

Owner info / steerer tube cut 2-3 mm below the spacer

You can see how the steerer tube is 2-3 mm lower than the spacer to allow proper installation of the preload expander. The insert preloads the headset by expanding when you tighten the hex key bolt. It comes with an optional sleeve if you need it. I like the expander that came with the Noah -- the one from Specialized was finicky.

Headset preload expander with optional sleeve / installing expander

I tightened the preload expander until there was no play in the headset and then tightened the bolts for the stem (using a 5 N·m torque wrench). You want the headset to be snug but not over-tightened as it will affect steering and bearing wear. If the headset is too loose you can damage the bearings. Once the build is complete I will loosen the stem and expander and re-tighten it all again to make sure it is properly preloaded.

Adjusting the headset preload / tightening the stem bolts

Handlebars / Shifters


The 3T Ergonova Team Stealth handlebars were a take-off from a bike-shop build and offered to me at a great price. The weight savings of going with these carbon fiber bars is about 67 g, and carbon fiber should help with some vibration dampening. The Ergonova bars employ an "egg-shaped" top meant to provide more comfort (to be determined) and I suppose a little aerodynamic benefit. These bars have a 6-degree flare-out in the drops, making sizing a little different from other bars I've used (44 cm center-to-center is 42 cm at the hoods). The drop of these bars is 123 mm and the reach is 77 mm, both very close to what I am used to.

Installing the handlebars / installing the shifters

Installing the bars is easy. The handlebars have guidelines printed on them to assist with centering, then you rotate them for proper alignment and tighten the four hex key bolts (evenly) to 5 N·m. The flat top is noticeably large, which makes the bars look "heavy" to me -- but I'll try them out and see what I think. I don't ride on the tops much so the comfort of the egg-shape is not really important. I do, however, like the narrower hood location and the flare-out in the drops. And I'll have to do some riding before I can decide if I like the specific ergonomic curvature of these bars (I expect to like it).

Adjusting the height of the shifters / bars and shifters installed

The Ultegra 6700 Di2 shifters feel very similar to the Dura Ace 7800 shifters I had on the Allez. I prefer the feel of these Shimano hoods over the Campagnolo and SRAM ones. The shifters install on the bars by loosening the clamp using a hex key and sliding them up to the appropriate position on the bars. Again, there are guidelines printed so you can install both left and right at the same height. Hood location can be based on feel -- I like a smooth, flat transition from bars to hoods. When doing long hard efforts solo and trying to be "aero" I alternate between IAB (invisible aero bars) and the Sphinx position (which to me is more comfortable with a smooth transition from bars to hoods). Of course when setting up bars one must also take into consideration Rule #46.

Side profile showing bar rotation and shifter location

In Part 5 (which will hopefully be posted before 2015) I'll be installing the brake cables, Di2 wiring, derailleurs, bottom bracket, crankset, and chain.

Bike Build Part 1 Bike Build Part 2 Bike Build Part 3 Bike Build Part 4

New Bike Build: Part 3

Sunday, December 15, 2013

Bike Build Part 1 Bike Build Part 2 Bike Build Part 3 Bike Build Part 4

From the cover of The Bicycle Wheel, by Jobst Brandt

If you're wondering why it took me so long to blog about my wheelset purchase, simply Google "bicycle wheelset" and see how quickly you can make a decision. With so many options when it comes to selecting wheels, it can be a bit overwhelming. Wheelsets are touted as one of the main areas where performance increases can be greatly gained -- but it can come at a significant price. Armed with a modest budget and sufficient time to delve into the many wheelsets out there, I feel I was able to find one with an excellent balance of price and performance.

There are many options to think about. Carbon or aluminum; deep or shallow; wide or narrow; sharp or blunt; clincher or tubular; carbon or aluminum brake track; tubed or tubeless. They can be best-suited for flat time trials, mountainous road races, sprinting in criteriums, long steep hill climbs, or just everyday training. And of course, aesthetics does come in to play -- no matter how much I pretend I don't care.

Aero vs. Light. One "problem" with the Noah frameset is that it really needs to have deep wheels to look right. To me, the thick aero frame just looks silly with small rims. I'm building up an aero frame, so it makes sense to have aero wheels. Besides, I have a spare set of light rims that I can use for climbing if I really want to, so for this wheelset I'm going to seek deeper rims.

Depth. An issue with a too-deep front wheel is control in crosswinds. Having a deep rear wheel, however, helps maintain control. My ideal setup would be something like a depth of 40-60mm in front and 60-90mm in the rear. Enve has the 6.7 wheelset (60 in front and 70 in rear) and many racers seem to like the Zipp 404/808 combo (58 in front and 82 in rear). Both those wheelsets are out of my price range but I chose to use them as a starting point in terms of rim depths.

Clincher vs. Tubular. The benefits of going with tubular wheels are they are lighter, corner better, are harder to pinch-flat, and safer to ride when flat. The problems with tubulars are they cost more, require some skill to glue on, have potential issues with brake heat, and are a not easy to deal with when you get a flat. Simply put, clinchers are for training and tubulars are for racing. I don't want to buy two wheelsets, so I need to decide on one type. Since the majority of rides I do are training rides, I decided to stick with clinchers.

Rim Width and Shape. The latest trend with wheels is wider rims and a more-rounded (blunt) edges. The main reasoning is to more closely match the width of the tires, creating a straight profile and therefore eliminating extra drag. The wider rims also allow lower tire pressure giving the rider a smoother ride, lower rolling resistance, and better cornering performance. It seems to make sense and wind tunnel testing backs up the claims. The blunt edge provides a more aerodynamic surface on the trailing end of the wheel, as well as helping deal with crosswinds. I decided to go with the newer "technology" of wider rims with blunt edges.

Rim profiles of some of the wheels

Braking. The downsides of going with carbon fiber brake tracks are lower brake power and reduced modulation capability. Those problems are made worse in wet conditions. Additionally, they require special brake pads that are sometimes even manufacturer-specific. I suppose you could also say that the sound of carbon fiber braking is a downside though it is not a performance issue. The downside of aluminum brake tracks is that they are heavier. To me, the choice of carbon fiber or aluminum brake tracks was not a priority, though my preference would be aluminum.

Other factors. As I mentioned in Part 1 of this build, I enjoy sprinting and frame stiffness was a factor. Wheel stiffness is also important to me, so finding a wheelset on the stiffer side is desirable. Aesthetics does matter somewhat as silly as it may seem. Personally, I don't like the look of certain wheel logos (e.g. Easton and Zipp), but I do like the look of others (e.g. Enve and HED). And of course, removing the logos is also an option.

There are tons of wheelset manufacturers out there. I mean tons. I looked at Bontrager, Boyd, Easton, Enve, FFWD, Flo, Fulcrum, HED, Mavic, November, Oval Concepts, Psimet, Real Design, Reynolds, Rolf Prima, Soul, Williams, and Zipp. Even with all those I know there are many others missing, but I still need to keep these posts under 10 pages. Here is a quick comparison on some of the options I looked at (sorted by price):

Depth Rim Approx.
Front Rear Width Brake Weight Approx.
Wheelset (mm) (mm) (mm) Track (g) Price
Enve 6.7 60 70 24.0 Carbon 1,590 $ 3,000
Zipp 404/808 58 82 24.0 Carbon 1,700 $ 3,000
Easton EC90 Aero 55 55 55 21.0 Carbon 1,580 $ 2,800
Oval Concepts 945 45 45 19.0 Aluminum 1,760 $ 2,300
Rolf Prima 58RSC 58 58 19.0 Aluminum 1,920 $ 2,300
Reynolds Assault/Strike 41 62 25.0 Carbon 1,530 $ 1,800
FFWD F6R-C 58 58 19.6 Aluminum 1,840 $ 1,700
HED Jet5/Jet7 54 75 23.0 Aluminum 1,800 $ 1,600
Psimet 50/58 50 58 23.0 Carbon 1,540 $ 1,500
Soul C5.0 49 49 23.0 Carbon 1,540 $ 1,500
Boyd 60/60 60 60 23.5 Carbon 1,660 $ 1,500
Mavic Cosmic Carbone SLS 52 52 19.0 Aluminum 1,700 $ 1,300
Fulcrum Red Wind 50 50 20.8 Aluminum 1,760 $ 1,300
November Rail 52 52 52 25.0 Carbon 1,530 $ 1,300
Bontrager Aura 5 TLR 50 50 23.0 Aluminum 1,720 $ 1,200
Williams System 58 58 58 19.0 Carbon 1,690 $ 1,100
Real Design Sixty 60 60 19.0 Aluminum 1,800 $ 1,000
Flo 60/60 60 60 24.4 Aluminum 1,940 $ 900

To shorten the list, I removed all the wheelsets over $2,000 as well as all those with rim widths less than 23.0mm. Here is the shortened list (sorted by weight):

Depth Rim Approx.
Front Rear Width Brake Weight Approx.
Wheelset (mm) (mm) (mm) Track (g) Price
Reynolds Assault/Strike 41 62 25.0 Carbon 1,530 $ 1,800
November Rail 52 52 52 25.0 Carbon 1,530 $ 1,300
Psimet 50/58 50 58 23.0 Carbon 1,540 $ 1,500
Boyd 60/60 60 60 23.5 Carbon 1,660 $ 1,500
Bontrager Aura 5 TLR 50 50 23.0 Aluminum 1,720 $ 1,200
HED Jet 5/Jet7 54 75 23.0 Aluminum 1,800 $ 1,600
Flo 60/60 60 60 24.4 Aluminum 1,940 $ 900

My next choice was brake track material. I went back and forth on this a few times. Heavy wheels are a problem both when climbing as well as when accelerating... braking becomes an issue when descending... the majority of time spent riding is on training rides where braking is important... I really like climbing up Lemmon... and on and on. In the end I decided to go with aluminium. So my choices were between the Bontrager, HED, or Flo.

Bontrager. The Bontrager rim shape is not as rounded as the HED and Flo rims, but they do provide the ability to go tubeless (one of the only carbon rims out there that is tubeless compatible). I'm not very interested in going tubeless, but if you are these are a fantastic option. With just a 50mm depth wheel in the rear they aren't as aerodynamic, but they are almost 100 grams lighter than the HED wheels, and over 200 grams lighter than Flo.

HED. Steve Hed has been a big player in the wheel market for a long time. HED is mentioned alongside with Zipp and Enve as one of the top manufacturers out there. Their wheels feature the wide C2 rims, as well as Stability Control Technology (SCT), meant to provide excellent performance in crosswinds. They also focus on lateral stiffness in the design of their wheels. A bit on the heavy side, and more expensive -- but a very attractive option for me.

Flo. I wish they had a 40-50mm offering but right now they only have 30mm, 60mm, or 90mm (or full disc). They are wider than the Bontrager and HED wheels, which I believe results in their better aerodynamic performance (see graph below). But they are a bit heavier at almost 2,000 grams. I looked at going with a 30mm in the front and 60mm in the rear, which saves 150 grams albeit with a bit of an aerodynamic penalty. I felt though that the 30/60 combo looked a little strange (depth difference being too great). For a TT bike, I think the Flo 60 up front with the Flo Disc in the rear would be a fantastic wheelset.

Drag vs. Yaw Angle

I checked EBay and found a set of HEDs with the Jet 5 up front and Jet 7 in the rear. The set was barely used (reportedly bought in May 2013, raced 3 times, 300 miles) and at a great price. I talked with my friend, Jason (who has a set of Jet 5s), and his opinion was to definitely go with the Jet5 / Jet7 set. For races with long sections of grades above 5% these wheels won't be ideal and I'll probably opt for a lighter set, but for everything else I'm thinking they will perform very well. Look for a review of these wheels here in the (hopefully near) future.

HED Jet 7 (rear) and Jet 5 (front)

In Part 4 the build begins! I'm hoping to be descriptive enough and provide enough photos that the posts are useful to anyone who does their own build project.

Bike Build Part 1 Bike Build Part 2 Bike Build Part 3 Bike Build Part 4