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High Volume Inflater for Tubeless Bicycle Tires

Published March 9, 2012

 

 

 

 

In order to set up my bicycle tires as tubeless I needed a way to get lots of air into them as quickly as possible to pop them on to the bead. After experimenting with pumps and various blow gun nozzle setups I decided to try and make something more effective. Inspired by a tool that I saw at Rochester Bike Shop I put this together: a modified blow gun fitted with a Schrader valve tire connector that’s had its check valve removed and the gasket replaced with a slightly smaller one.

 

The result is an inflater which’ll fit snugly enough around the body of a coreless Stan’s NoTubes valve to seat a tire and can also be used with a Presta to Schrader adapter.

The parts used for this were as follows, all purchased from either a local hardware store or at Performance Line Tool Center:

· Milton S 153 Blo-Gun ($9.99)
· Milton S 699 Air Chuck ($1.99)
· 5/16″ Compression to 1/4″ NPT Adapter ($3.49)
· 1/4″ Rubber Washer ($0.59)
· Quick Disconnect for Air Line (Had at home.)

First, the blower tube and rubber head were removed from the handle/valve. The compression to NTP adapter was then fitted into the body, as the compression threaded side of the adapter was the closest reasonable fit that could be found. The air chuck was then fitted to the NPT thread on the other end of the adapter. The compression nut and ring are not needed.

Next the air chuck is opened by unscrewing the brass ring around its opening and the check valve from inside was removed. Removing this allows the assembly to expel air whenever the lever is depressed. The center of a 1/4″ rubber washer is then slightly enlarged using a stepped drill bit so that it fit tightly over the body of a Presta valve. This modified washer is put in the chuck in place of the original, and the chuck is now usable for coreless Presta or Schrader valves.

Finally a quick disconnect that fit my air hose was installed and the tool was ready to use.

With this I had no problems airing up a newer (but still old tread pattern) Schwalbe Racing Ralph and a somewhat used Kenda Small Block Eight on my newish Blunt SL-based wheels. I’m still working on finishing up the tubeless setup, but this tool really helped get it done easily.

Were I to build another one of these valves I’d probably do it with a Milton 151 instead, as it’s a simple lever valve body with 1/4″ NPT fittings on each end. It’d then be easier (and cheaper) to set up the chuck, as a simple 1/4″ NPT to 1/4″ NPT nipple of whatever length desired could be used. This part wasn’t available (or known) to me at the time, so I made do with what I could find. Total cost was less than $20, and it should last for as long as I need it.

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One Centimeter Makes Quite A Difference

Published March 7, 2012

Today’s unseasonably nice weather found me home with time to get in a bike ride before the sun set. Not long after setting out I realized why my legs were more sore than normal after Sunday’s ride: my seat was too low. I stopped, move it up about 1cm, and it was like a whole new world. I’d suspected it was a bit off, and my legs were sore in the way that a too-low seat makes them, but it hadn’t really felt bad. Apparently it’d slid down a bit over time and I didn’t outright notice it. After fixing the height I simply felt faster and my legs felt better. It’s amazing what a difference such things make.

While out and about I ended up poking around various neighborhoods and took the back way into River Bends. The trails were surprisingly sold, with the vast majority of it being completely ridable. There’s a few unpleasantly muddy bits, but overall a few more dry days will have it ready to go. With luck this spring won’t be nearly as wet as the last and there will be lots of dirt road and dry trail riding happening soon. I also hope that we’ll be able to route around or fix some of the muddy spots at River Bends so they won’t be problematic in the future.

It appears that someone has been trying to live out in the woods at River Bends. Way back off of the Seasonal Loops I found a makeshift shelter (photo) that someone had assembled out of deadfall, recently cut smaller trees, and tarps. No one was around, but there were some large metal cans inside and the shelter had quite a smell coming from it.

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Final Kegerator Drip Tray Design

Published March 5, 2012

This past weekend I put the finishing touches on the tap portion Kegged Beer Cooler (Kegerator) by finishing off the drip tray. It was built using a 14″ wide stainless steel drywall mud tray that has been caulked with RTV silicone. I’d originally attempted to hang it using hard drive magnets, but as can be seen here this didn’t look as nice as I’d hoped, and the magnets sitting off of the wooden support blocks made it a bit unstable.

This past weekend I cut some new blocks out of oak (picture), stained and sealed them to match the collar, drilled holes in them so epoxy could penetrate nicely (picture), then epoxied 24 square (1/4″ x 1/4″ x 1/8″) neodymium magnets on the back of each (picture). These blocks were then epoxied to the metal tray, and they now hold the drip tray nicely under the taps. As expected the magnets are quite strong, so spaced evenly along the block the tray is held on with considerable force. I imagine I could fill it with liquid and it wouldn’t budge.

This isn’t a particularly fancy design, but at a total of ~$30 I’m quite happy with how it came out. It serves the need of collecting drips, is easy to remove for cleaning, and looks pretty good.

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MMBA Forum Posts during 2012 Iceman Registration

Published March 1, 2012

The image above (click to embiggen) shows the one hour moving average statistics for posts (replies) and topics (new threads) on the MMBA Forum. This morning registration for Iceman opened on USA Cycling‘s website and as a result of the site collapsing under the load many people visited the forum to complain, commiserate, and generally discuss the situation. Most of the traffic seemed to be in this thread, although I don’t keep per-thread statistics beyond what’s already exposed to the end users.

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Android Phone as BitLocker Recovery Key

Published February 28, 2012

I recently ran into an issue where I needed my BitLocker recovery key, but found that I’d left it at home. This locked me out of my machine for a few hours and was a bit of a hassle. It got me wondering if maybe I should instead keep said key on my phone instead, as it does a pretty good job serving as a USB mass storage device.

It turns out that this is not such a keen idea, as it doesn’t work out very well. On my Nexus One (and presumably other Android phones), when connected to a computer they prompt the user to switch the microSD storage over to USB Mass Storage. Once selected this takes a few seconds. Whenever the phone is disconnected from the USB host it automatically presents the card back to the phone, and only prompts the user once a host is detected.

With BitLocker, one becomes aware of needing this key when the boot is interrupted and the user is prompted to insert a USB mass storage device with the key present. The computer is then rebooted, finds the key, and continues to boot. With an Android device as the USB mass storage device this reboot resets the phone. I’ve found that it’s typically not possible to get the phone into mass storage mode between POST and OS load, particularly as the machines I’ve tried it on seem to reset USB after POST.

I think I’ll just have to stick with a USB flash drive for this.

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Shattered Hard Drive Platter

Published February 24, 2012

To collect neodymium magnets for rebuilding the not-currently-great drip tray to kegerator / kegged beer cooler I started disassembling more old hard drives, attempting to salvage the magnets. When disassembling one drive I decided it’d be fun to bend the platter, but I (stupidly) didn’t pay attention to the platter material before doing so. The result? Tiny bits of broken glass and amazingly thin foil spraying all over the basement floor. Whoops.

At least it was easy to clean up.

I had little luck collecting useful magnets from the drives because some were too small, some drives only had one, and many of them shattered as I removed them. Instead I’ll just buy a bunch of tiny ones on eBay or Amazon and epoxy them on instead. It’ll be a lot easier.

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iPod Battery Replaced

Published February 24, 2012

Roughly six years after buying my black fifth generation iPod I finally replaced the battery. After years of working well it was starting to fail, providing me with only a few hours of music listening while at work, way down from the original 10-15 that I was getting when it was new.

The replacement battery was part number BIPOD550MV30 from OWC, a very reliable online Apple reseller who has been around for years, and cost just over $20 shipped. While I could have purchased a cheaper battery via eBayI wanted to be sure to get one from a reliable place, so if I had problems with it there wouldn’t be an issue returning it.

The battery is now installed and charging, so hopefully by morning it’ll be full and ready to go.

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Bundaberg and Underberg

Published February 23, 2012

Recommended to me late last year by my friend Joy is this, a mixture of Bundaberg Ginger Beer and Underberg herbal digestive bitters. Gently mixed together with a bit of ice, this is a wonderfully herby (sort of) soft drink. From a bit of reading I think this is a San Francisco thing, but I still enjoyed it on a warm (for February) day here in Michigan.

It amuses me that, despite being 44% ABV, Underberg is not sold as an alcoholic beverage at most stores. At Meijer it’s found in the import asile and not listed as age restricted when checking out, and at a local German market which isn’t licensed to sell alcohol it’s right next to the counter.

Then again, last time I bought some at the German market the teenage-ish girls behind the counter started laughing, exclaiming that they couldn’t believe I liked it. I suspect that the need to control it is rather limited, as apparently one of them noticed the alcohol content and bought some to drink before going out one evening. They told me that they hadn’t realized what it tastes like and couldn’t drink even one (1 oz.) bottle. Underberg is definitely not something that one ingests to become intoxicated.

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Phenom Shuffle

Published February 21, 2012

A convenient trade took place recently, with me my swapping someone the white Specialzed Phenom from the trainer for a same-size one, but black with a red nose and wings. (He wanted the white one to match the all-white bike that he’s putting together.) Tonight I set it all up, taking the original Phenom with silver accents from the Titus and moved it over to the trainer and, as seen above, putting the new red-accented one on the Titus. I think it’ll match nicely with the other red bits on the bike such as the brake barrel adjusters, cassette, and cable housing.

This spring, once I put the trainer away (or maybe even a little before then), I’ll then take the silver-accented one and move it over to the El Mariachi. (This bike doesn’t have any red on it at all, and thus the red-accented saddle would have looked rather out of place.) I have a feeling I’ll be riding this bike quite a bit and I’d like it fitted with a saddle that agrees with bit more with my bits than the WTB Laser V that’s currently on it. The Laser V is a good saddle for a bike that I don’t ride for long periods of time, but extended periods of sitting on it tend to make things feel a bit… off.

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