New Arrivals: SKS Rennkompressor pump, Bike Ribbon padded handlebar tape.

The SKS Rennkompressor is my favorite floor pump, and it’s the one we use here in the store most often. Have you tried other European pumps and had the pump head fly off your presta valve before you can get it up to pressure? I certainly have. Wood handle, long hose, rebuildable, extremely heavy, German. Comes with a universal head with replaceable gasket, and a free pair of socks, at least for now. No other floor pump comes with socks. $54.95 here.

The other new (old) product we’re carrying here at Harris Cyclery is Bike Ribbon Professional padded handlebar tape. The easiest to clean white handlebar tape by a long shot. Soft but not too soft, textured but not too textured, no logos all over your bars. It’s easy to wrap, doesn’t tear, and includes adhesive that’s strong enough, but not too strong for reuse. I’m a big fan of this style of tape, and have a sizable collection of discontinued colors. For now we’re carrying it in black or white. $9.95 here.

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Google Maps Bicycling Directions

After years of repeated requests, Google has added cycling routes to Google Maps. After experimenting for a bit, I found that it doesn’t always give the best routes, but it’s pretty good for an automated system. I think they probably optimized it for shorter rides, if you try to get directions for longer rides it gives you an unreasonable number of turns, probably to keep the overall distance shorter. At least it supports alternative routes and waypoints, like the driving directions, so it’s pretty easy to fine tune the directions to keep you on decent roads. It also assumes a pretty low average speed from a long distance cyclists’ viewpoint, but it’s probably in line with recreational riders.

Here’s what it came up with for a short coffee-after-lunch ride in Worcester. There’s an embeddable widget that gives just bike directions as well:

There’s a pretty good blog post from one of the developers with the details about how routes are calculated, and they’re soliciting feedback to improve directions. I’d like to see bicycling directions integrated into the public transit directions.

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Just Arrived: TA Cyclotouriste Pro 5 Vis Cranks 165mm

TA Pro 5 Vis with 42T

The modified cranks are now in stock, with some chainrings dustcaps, and outer fixing bolts available. We’re expecting hardware to mount inner chainrings next week. All chainrings are new production, and super shiny. Very nice stuff.

Cranks are only available in 165mm length. $149.95 a set.

Right now, for outer chainrings, we have 42, 44, or 46 tooth available. These are suitable for use as a single ring, and have the bolt holes to attach the inner chainring.
Inner chainrings, 26, 28, or 30.

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Shimano Alfine 11 speed quietly announced.

Saw this info this morning via Hubstripping. The German cycling website Aktiv Radfahren posted info on an upcoming Alfine 11 speed hub, SG-S700, due in September of 2010 for 300 Euros. Reported 409% ratio, gear steps of 17% and 13%. Article translation is here.

This one goes to 11.

I’ll keep an eye out for more official information from Shimano as it comes.

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Coming Soon: TA Cyclotouriste Cranks 165mm

We recently found a decent sized stash of new old stock TA tandem captain’s cranks. On a tandem, the front cranks have pedal threads opposite those of a normal crank set, great if you want to set up a tandem with a left timing chain, not so great if you don’t have the stoker cranks to match. Without the matching rear arms, they’re pretty much useless.

TA Cyclotouriste 165mm

Except, we had them rethreaded for use as normal cranks. A small machine shop did the work, and they came out good as new:

Rethreaded TA Crank

These are functionally the same as normal new old stock 165mm Cyclotouristes, and they come with the original foil stickers. They will be available only in 165mm length, that’s all there is.

Ta Cyclotouriste Bolt Circle

We’ve got a couple of chainring sizes on order, but we’re soliciting opinions on what rings to stock with the cranks. Have you always wanted a new Cyclotouriste crank but couldn’t afford it? What size rings would you buy? A classic compact double at 46-30? A single 42 or 46 tooth ring? We’re looking for input, so please leave a comment if you have any interest. These are genuine TA Cyclotouriste cranks, with the same restrictions on triple front derailleur use as described here.

We expect to have these available with chainrings, chainring fixing hardware and dustcaps within a couple of weeks.

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Online Cantilever Mechanical Advantage Calculator

Benno Belhumeur has just posted this excellent cantilever mechanical advantage calculator, hosted by Circle A Cycles of Providence, RI. The accompanying paper discusses how different cantilever geometries change the way brake setup should be approached, and the effect that geometry changes have on mechanical advantage.
MAITOY cantilever geometry diagram, by Benno Belhumeur
I’ve got a lot of bikes to measure… Thanks to Benno for the great effort.

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Origin8 Classique Saddlebag

Origin8 Saddlebag
An inexpensive alternative to a classic canvas saddlebag. Has the same dimensions as the “large” bag from a certain English manufacturer, but made in China from 600D polyester, rather than cotton duck. This makes for a lighter and less rugged bag. Has leather straps that are a little bit thinner than standard, but should hold up OK. Elton rode with this bag on his commute for a while, and it kept everything dry as expected. He was pleased with the overall function of the bag.

Mounts in the traditional fashion to any saddle with bag loops, such as the Brooks B17, B66, or B72. You can sometimes make do with a saddle without loops, but not always.

Origin8 Classique Saddlebag at Harris Cyclery

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Shimano UN54 Cartridge Bottom Brackets Relative Chainline

Here are some measurements I took from some of the square taper cartridge bottom brackets we carry. The drive side length is measured from the edge of the bottom bracket shell to the very end of the spindle. These measurements should be good enough relative to each other for chainline adjustment, but I wouldn’t use this chart to compare with bottom brackets from other manufacturers, which may have different taper lengths.

Bottom BracketOverall LengthDrive Side Length
Sugino/Tange 68-103103mm18mm
Shimano UN54 68-107108mm20mm
Shimano UN54 68-110111.5mm20mm
Shimano UN54 68-113114mm22.5mm
Shimano UN54 68-115115.5mm23.5mm
Shimano UN54 68-118118.5mm25mm
Shimano UN54 68-122123mm28mm
Shimano UN54 68-127128mm30mm

Cartridge Bottom Brackets from Harris Cyclery

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The Making of a Brooks Saddle

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Jtek Engineering Update and Pictures

Jay Guthrie from Jtek Engineering has posted an update on the Jtek website with some pictures of his shop.

Bar-end shifters in progressAll of us here at Harris Cyclery wish you the best, Jay and Ryan.

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