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How to Rivet an STI Cable Stop

November 13th, 2011 [print] No comments

In the process of modifying my Scrambler frame with cable stops, I ran into a problem:  how to rivet the stops in place.  Seems easy enough on the surface, but what I soon found was it’s impossible to get a rivet gun flat against the rivet heads.  In case anyone else has run into the same problem, I thought I’d share my method.

First, let’s do the brake cable stops.  Whether you’re going with standard ones, or the type that hold hydraulic brake lines, it’s pretty simple.  Drill a couple 1/8" holes where you want the stops.  Be very accurate with your measurements before you drill.  If the holes aren’t lined up with the holes on the stop, you’ve more or less just ruined your frame.  In fact, if you’re even off by a fraction of a millimeter, the rivets may go in, but end up a little crooked, and look like crap.  Use a center punch so the drill bit doesn’t walk, and drill a smaller pilot hole first.  I’d also suggest using aluminum rivets, since they’re lighter, don’t rust, and require less force to rivet than steel.

You’ll need rivets 3mm x 3mm in size, and they’re easy to find at any hardware store for about $5 for 100 of them.

Okay, here’s the problem you’re going to have:  once the holes are drilled, and the stops are zip tied in place, you’re going to realize there’s no way to place the head of the rivet gun flat against the head of the rivet because it’s in a recessed area.

Click for larger image

Here’s the solution:  go to a hardware store, like Ace Hardware, etc, and buy a couple aluminum spacers 1/2" long and 1/4" diameter.  One of them will need to be cut down to about 9mm long for a standard cable stop.  Use a fine tooth hacksaw blade and a vise to cut it, but save both pieces.  Also, be sure to compensate for blade thickness, because you really need it to be 9mm long so that it clears the stop, but allows enough of the rivet pin to stick through so the gun can grab it.

Now, put the rivet in place through the stop and frame, and slide the 9mm spacer down the rivet pin.  It will rest against the rivet head, and give the rivet gun’s head something to push against.  A couple squeezes of the gun handle, and the pin should break as the rivet permanently clamps the to objects together.

(Tip:  wrap electrical tape around the entire area, because once the pin breaks, the gun may fly forward and ding the frame or scratch your paint.)

The brake cable stops were the easy part, but the STI stop will take a little more effort.  For the record, I didn’t come up with this idea.  I racked my brain for days trying to figure out how I’d get the STI stop riveted on, since putting enough spacers in place for the gun to clear the stop, meant there wasn’t enough pin exposed for the gun to grab onto.  I mentioned it to a guy I know, and he came up with an idea that saved my day:  pull the pin out of a longer rivet, and use it in the shorter one.  I had no idea the pin could be removed, but it can…

I headed back to Lowes, and bough a box of 3mm x 1/2" rivets, since that was the longest they had in 3mm diameter.  If you can find something longer, go for it, but 1/2" gets the job done.

Next, it’s time to do some pin swapping.  Unlike steel rivets, where the pin easily slips out by hand, it’s in there a lot tighter in an aluminum rivet.  I ended up using an adjustable wrench–wrapped around the rivet, just under the head–to press the rivet off the pin, against a hard tile.

This first photo shows how the pins are the same length above the heads, but it’s much longer under the head on the 1/2" rivet.

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With the rivets pulled off the pins, you get an idea how much longer one is than the other.

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Next, do the swap, again using an adjustable wrench to force the pin onto the rivet.

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Now, it’s time to add some spacers.  Remember that piece I told you to hold onto from the cut spacer?  Well, slip it, and the uncut 1/2" spacer onto the rivet pin, and you have enough to clear the taller STI stop, with enough exposed pin for the rivet gun to grab onto.

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You can discard the leftover 1/2" rivet and shorter pin.  When you’re all done, you should have something like this:

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One other thing I’ll add is, if you’re doing this to a steel frame, put a tiny bit of grease around the edges of the holes you drilled in the frame, and between the frame and the stop.  It’ll work as a water-tight barrier to help prevent rust.  That’s a little bit of grease being squeezed out near the upper rivet in my photo, so I know I have a good seal.

Links:

Standard aluminum brake cable stop (also in black)
STI derailer cable stop
Standard rivet gun

Screw you, Shimano

February 16th, 2011 [print] No comments

Shimano Dura Ace BL-TT78 brake levers come with set screws, which you can use to adjust your reach to the lever.  There are very few levers–road or MTB–on the market that don’t offer reach adjustability.  However, the BL-TT78s are the first I’ve encountered that have plastic screws.

To save maybe a gram of weight, Shimano chose to go with plastic screws, and they also cut them extremely short.  An extra 3mm would have worked wonders, so what’s the point in making them so short?  Not aware of either the material or the length, I began tightening them to shorten the reach of my levers to the point that I could get the first bend of my index finger around them, only to reach bottom, and then snap the head right off one of them.  Had the screw been metal, I could have felt that it bottomed out, but because the plastic is so soft, it’s almost impossible to distinguish a difference in torque between the screw turning freely, and the head twisting against the shaft of the screw as it’s breaking off.

Click for larger image

Fortunately, I only made the mistake once, so I only had one headless screw shaft to get back out of the lever–not an easy task.  The other one, which you can see in the photo above, is still intact, so it was to be my reference for going to the hardware store and finding a new one with the same diameter and thread count.  I don’t know how many hours of my life I’ve wasted in hardware stores, trying to find screws, bolts or nuts that don’t exist, and I guess my subconscious decided to save me all the trouble before I did it again.

As I was getting ready to walk out the door, I suddenly got the idea that I should go check some old MTB-style Shimano brake levers, on the off chance that the set screw might have the same thread size.  As luck would have it, it did.  It was also much longer than I needed, which gave me the ability to cut it down to the right size (middle screw).  Hacksaw > file > done.  It turned out so well, I went ahead and did a pair, so now as I bottom the screws out inside the levers, they’re at exactly the right reach for my hands.

It was an hour or more wasted because Shimano made a bad design choice, but at least I worked it out.  In the end, I gained 1 measly gram.

I’ll leave this posted as a how-to for anyone else who may come across the same problem.

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How to Adjust Epicon / Axon Fork Travel

August 12th, 2010 [print] 12 comments

SR Suntour ships its SF9 Epicon RLD and Axon RLD forks with 100mm of travel, however, both can be adjusted to 80mm, 120mm, or 140mm if you need more or less travel.  For this How-To, I’m using my 2009 Epicon RLD, but the Axon’s travel is adjusted the same way.  The only difference between the two is how much torque you use when tightening the lower bolts during re-assembly, so pay attention to that part.

First, you’re going to need a few things:

–  5mm and 8mm Allen wrenches (or 8mm & 10mm for the Axon)
–  large adjustable wrench
–  rubber mallet or dead-blow hammer
–  grease
–  fork air pump
–  in-lb torque wrench with 5mm and 8mm bits (or 8mm & 10mm for the Axon)
–  various shop towels
–  hammer
–  pin driver
–  bench vise or something similar

** Don’t even bother with this if you don’t have all the above tools already at hand, unless you want to end up with a (partially) disassembled fork, broken parts, and a bike that can’t be ridden until you have it put back together again.

As I mentioned, my Epicon came with 100mm of travel.  It raised the front end of my bike about 1.5" over my rigid fork, slowing cornering response.  I ended up lowering it to 80mm, and I’ve been riding it like that for the past few months.  After my little flight over the handlebars last week, though, I thought I’d raise it again, giving me less of a forward-leaning stance, and perhaps lessening my chances of that happening again.  Besides, I’m close to giving this fork a full review, and I figured it’d be better to try it at different travel lengths to see how it performs overall.

Instead of going back to 100mm, I decided to go to 120mm, which is the most amount of fork travel I’ve ever had (as a long-time XC rider, I spent about a decade at 80mm, or on a rigid fork).  My frame came stock with a 100mm fork, so going to 120mm adds some stress, but not so much that the frame can’t take it.  However, I think 140mm would be pushing it a bit much, and I don’t want to take a chance with snapping my head tube.

Here’s the fork before I took it apart, still set at 80mm of travel.

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How to Remove a Star Nut

August 7th, 2010 [print] 3 comments

Removing the star fangled nut from your fork’s steerer tube probably seems like a pain in the ass, but it’s actually quite simple.  Many people have given up trying to get one out, since they can only be hammered down, and not pulled back out from above.  The lazy way to go about it is to simply hammer the existing nut further down inside the steerer tube, then installing a new one above it.  But chances are you found this page because you’re wanting to go about it the proper way, by actually removing the old one.

First off, you’ll need a few tools, but there’s a good chance you already have everything you need:

– A drill
– 5/16" drill bit
– hammer
– flat-head screwdriver
– needle-nosed pliers and/or a hook

The star fangled nut basically consists of two similar ends riveted togetther about 3/8" apart.  The rivet is the part we need to attack, and once it’s out of the way, the rest is easy…

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Bad Idea of the Day: Spin Scooter

July 22nd, 2010 [print] No comments

Whatever you do, don’t build this thing:

http://www.instructables.com/id/Build-the-SpinScooter/

I think the builder sums it up best with this:

"…and sometimes these creations fail, either in a huge flop, or a blaze of glory where the crash test pilot becomes acquainted with the pavement."

On second thought, build it and send me a link to your initial test drive.

Via:  Instructables

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How to Change Cateye Loop Battery

June 27th, 2010 [print] 1 comment

Changing batteries in the Cateye Loop is extremely easy, but only once you know how.  I tossed the packaging the day I got it, and I don’t see instructions online, so I had to figure it out for myself.  If you’re having trouble getting it apart–since it’s not at first obvious–then follow the instructions below.

First, grab a flathead screwdriver.  I took the headlight off my bike while I did this, but you an just as easily leave it mounted.

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How to Be Awesome

June 24th, 2010 [print] No comments

This is how.

How to be awesome

It’s all about the Special Purpose.

Categories: How To, Miscellaneous Tags:

Instructables: Bamboo Bike

June 12th, 2010 [print] No comments

Speaking of bamboo bike frames, if you’re more of the DIY type, BAMBOOBIKER over on Instructables.com just put up a new post on how to make your own.

Basically, you’ll need an old frame, some bamboo tubing, and a whole lot of free time, but it looks like a great project for someone who likes to get their hands dirty.

Image credit: BAMBOOBIKER - http://www.instructables.com/id/Bamboo-Bike-2/
Photo credit: BAMBOOBIKER

Instructables.com

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How to Make Your Own Cycling Shoes

May 5th, 2010 [print] 1 comment

I don’t normally do DIY posts, but since this project is both simple, cheap, and easy to explain, I figured I’d share.  Basically, all we’re doing here is turning a pair of normal shoes into incognito cycling shoes for use with clipless pedals.  As we all know, typical cycling shoes look pretty damn dorky, so it’d be nice to have a pair of shoes that you could put on to ride over to a buddy’s house in a pair of bluejeans should the occasion arise.  Or, maybe you’re headed to class, don’t plan on doing much walking, and it’d just be easier to take some cycling-specific shoes that don’t shout to everyone that you’re a lame-o cyclist.

Whatever your need for them, here’s how you’re gonna do it…

What you need:

– 1pr of old cycling shoes (yours or someone else’s, but make sure they fit your feet)
– 1pr of normal shoes
– A box cutter, plus scissors or whatever other cutting device you’d like to use
– Contact cement or other extremely strong clue
– Something to mark a cutting template with, such as tape or a paint marker
– Old newspaper

Step 1 – Find some old cycling shoes.  You probably have an old pair that you never threw out, but if not, then hit up your buddies, local bike shops, or beg for some on Craigslist.  Either way, get some and try not to spend any money on them since you’re about to tear them to pieces.  Just about anything willl work, so for my project, I used some 7-yr-old Cannondale mountain bike shoes that I replaced last year.

Click for larger image

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How to Improve GoPro Hero 5MP Wide Audio

March 21st, 2010 [print] No comments

GoPro has improved the audio on their latest HD version of this camera, but most people still use the standard-def version I have here.  The video is decent quality for the price, but the audio is definitely a sore spot for everyone.

Although GoPro added an external audio jack to the HD version, your only option for the normal camera is the lousy built-in mic on top of the camera itself.  Of course, most people use the camera inside its water-proof case, making audio an even bigger issue for two reasons:  camera vibration inside the case, and the inability to pick up a decent level of sound from outside the case.  Recently, I discovered a work-around on MTBR.com that I thought I’d share here.

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Categories: Cycling, How To, Videos Tags:

How to Install A Rear Bike Wheel

September 29th, 2008 [print] 2 comments

I know removing and installing the rear wheel on a geared bicycle can be a hassle for someone who has never done it before.  I actually had trouble with it 10 years ago when I began biking, too, so I thought I’d do a little how-to for others who are having trouble with it.

First, before removing the wheel, make sure you’re shifted into the largest front gear and the smallest gear in the rear.  I know this seems like an optional step, but it really will make the process a lot easier in the long run.

The other important step involves pushing downward (assuming the bike is upside-down as it should be) on the rear-most section of your rear derailleur.  By doing so, you will force the pulleys upward, and along with them, the chain.  This will leave the drop-outs free and clear for the axle to move in or out.

Study the animated image below, and then go practice.  It’s better to learn how to easily do this now, while you’re at home, than later, when you’re stuck on a trail somewhere.  As you’ll see by the animation, I’m showing how to put the wheel back in place.  Removing it is just a reversal of the steps.

Make sure you fully tighten the skewer and check your brakes before riding.

Good luck.

Remove or install a rear bike wheel

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How to Improve Rim Brakes

July 9th, 2008 [print] No comments

Yeah, I know, disc brakes are pretty much the thing to have nowadays for mountain bikes, but they’re still not the standard.  Even today, the majority of bikes are sold with rim brakes, although discs do seem to be closing the gap as prices drop.  Still, that doesn’t mean you have to put up with crappy braking, and with a few simple steps, good quality v-brakes can easily brake as well as discs under most circumstances.

The first thing you need to do is clean your rims, since this is half of the overall braking system (the other half being the pads).  Take a close look at your rims, and you’ll likely see a lot of residue from your brake pads and whatever else you’ve ridden through lately.

Click for larger image

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Bicycle Chain Length

June 29th, 2008 [print] No comments

Bicycle Chain Length

To determine proper chain legnth for your bike:

  • - Bypassing the rear derailler, run the chain around the largest chainring and largest cog
  • - Add an additional 2 segments of chain to this length for a proper chain length
  • - For a rear suspension frame, position the rear suspension for the greatest chain length required before measuring
Categories: Cycling, How To Tags: , ,

Polished Crankset

June 26th, 2008 [print] 3 comments

I was inspired to do this project after seeing RL Policar’s How To Bling Your Bike For Less Than $5.00 post on MtnBikeRiders.com last week.

I had recently bought a used Shimano FC-M510 crankset off eBay for my wife’s bike, as a replacement for her Shimano Tourney crankset.  She likes the Tourney because of its integrated chainguard, but it’s always bugged me that the chainrings are riveted on, as opposed to bolted.  Once riveted chainrings wear out, the entire crankset is useless, since the rings can’t be replaced.  It was also a bit on the heavy side which, for someone like me, is downright blasphemous.

Not wanting to spend a lot of money, I ordered a used crankset from eBay.  While waiting for it to arrive, I found the above mentioned article and decided I’d give it a try.

The crankset arrived very scratched up, just as I had expected, but in perfect condition otherwise (unfortunately, the picture doesn’t do the paint damage justice, as it was far worse in person than it looks).  Also, a couple teeth on the large chainring looked as though they had a bite taken out of them by a piece of concrete, but this won’t matter once I’m done (you’ll see why).

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Water Bottle Kit

June 22nd, 2008 [print] No comments

I typically use a CamelBak to carry my tools and water along on rides, but for shorter rides, it isn’t always neccessary.  However, I hate strapping a seat bag onto my bike because it’s too time consuming messing with the straps, and seatbags are usually wedge-shaped, so cramming everything inside can be difficult.

So, for a short evening or morning ride where you may need just a few essentials, and especially if you have multiple bikes and never know which one you may take with you, I thought I’d pass along this tip.

This first thing you need is a spare water bottle, preferably with a large opening; a 24oz. size works just fine.

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Categories: Cycling, How To Tags: ,

Padded Bar Ends

March 15th, 2008 [print] No comments

Lately, my bar ends have been causing my hands to go numb.  My extremely rigid aluminum fork is probably to blame since it doesn’t dampen vibration like my old SID fork did.  Since there are no decent grips on the market for bar ends (other than some slip-on types made of neoprene), I decided to make my own.

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Polylube the Mute Button

March 9th, 2008 [print] No comments

One of the most important things to own for your bike is Park Tool’s Polylube.  Buy it in the tube and it’ll last for years.

With that out of the way, this is my story:

On both of my rides last weekend, I kept hearing a creaking/popping noise with every pedal stroke.  My bike is usually pretty quiet, so this was annoying the crap out of me.  I finally discovered the sound went away when I stood to pedal, which gave me an idea as to what it could be.

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Bike Seat Height

September 24th, 2007 [print] No comments

I’ve been meaning to do a write-up about this for awhile and never got around to it.  Fortunately, someone else already did, so here’s a link:

http://sheldonbrown.com/saddles.html#adjustment

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Bicycle Weight Loss for Cheap

May 20th, 2007 [print] No comments

When I built my bike, I had to do tons of research to find parts that were not only light weight, but also strong and durable enough to get me by for years to come. However, pretty much any bike can be made lighter for relatively little money, and sometimes without spending a dime.

If you wonder what the point is in going light, there are actually a few reasons. For one, the lower your bike’s weight, the more efficient it becomes. Less effort has to be put out by the rider to accomplish the same amount of work; that also means you can accomplish more putting out the same amount of work. As weight lowers and your output remains the same, you’ll ride faster and your bike will be easier to maneuver. And easier to maneuver also means that it will be easier to put into your car, or onto a bike rack, or up the stairs of your apartment complex.

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Brake Locks

May 12th, 2007 [print] 2 comments

I saw this tip in Mountain Bike Action magazine awhile back and I thought I’d share it:

If you have an old innertube laying around, cut off a small strip of it and slide it over your handlebar to rest on your grip, or somewhere else out of the way (pic 1).  Then when you’re leaning the bike against something and wanting it to stay put, stretch it over to the brake lever to keep contant tension on it so the bike won’t roll away (pic 2).  I tried it the other day when I was re-assembling my wife’s bike and found it worked really great.  It’ll also keep your wheels from spinning in the wind when it’s on your car’s bike rack.

PIC 1 [click for larger image] PIC 2 [click for larger image]

Categories: Cycling, How To Tags: ,