Posts filed under Cane Creek eeSilk

Soma ’Saga’ Touring Bike.

Another semi custom bike leaves Cycle Depot.

Every once in a while we have someone enter the store that has been bitten by the touring bug. The urge to travel and explore uncharted territory. To follow in the footsteps of Magellan, Polo, Cook and the like or, as in this case, to put a tick on the bucket list by touring the US for a couple of months.

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Our remit for this build was to produce a bike that was suitable for light, medium touring, therefore no real need for a tank of a frame capable of hauling around 300lbs of ones essential chattels and assorted paraphernalia. Other requirements were chiefly comfort and relaxed ride position, slightly elevated front and the option of multiple ride positions on the bars. The rider also had requirements for preferred cadence and obviously riding style. The rider, as always, was measured on a body jig and a full CAD workup produced.

Soma Fabrications of San Francisco CA produce a frame for just about any genre of riding. I think it is safe to say that we have used Soma frames on around half of all the semi custom bikes we have built. The geometry is always well thought out and, whilst not always cutting edge or pushing any envelopes, it is usually just about perfect for real world applications. The Soma ‘Saga’ frame used in this build is another example of this.

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Obviously high on the priority list is always the subject of wheels. In this case we opted for traditional and strong. The Shimano XT disc hubs are hard to beat especially at the price point. The tried and tested cup and cone bearing setup is executed perfectly by Shimano, machined cones and boron coated, I rebuilt and adjusted them to my preference, they, like others always seem to be a little on the tight side out of the box. These were then built up using straight gauge 2.0mm spokes with hub washers laced to Velocity Atlas rims, 36 hole and a 3 cross pattern, brass nipples and wheelsmith prep. The hubs are available with a standard 6 bolt disc mount or the proprietary center lock. I opted for the more standard 6 bolt mount. I do not anticipate the need for a replacement spokes obviously but if the need does arise some spares of the correct lengths are attached to the frame on the non drive side seat stay,. This is a nice feature found on some touring frames and I think it looks cool and it would be churlish not to use it.

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Because of the gearing chosen for this build, we were really pushing the boundaries of what modern Shimano and Sram group-sets are happy with. Both the major group manufacturers do not really offer a touring package. It has come to a point now that mixing and building your own ratios and ring setups is becoming a bit more of a chore. Shimano, Sram and Campagnolo crank sets are very sophisticated and the rings are matched to each other, not that these setups do not work at all when you mess with them but, they ain’t great either. In this case we wanted a front triple chain ring range of 48’ 36’ 24 and a rear 10 speed cassette of 11-32. The crank-set we ended up using was a beautiful Alpine 2 from Sugino. getting weird chain wrap figures and requirements you have to think a little more outside the box.

MicroShift R10 3 x 10 Brifters

MicroShift R10 3 x 10 Brifters

An often overlooked brand when it comes to shifters is Microshift. This company has been around for quite some time, producing very reasonably priced derailleurs and shifter units that we routinely use as replacements on entry level bikes when budget is an issue. However in the last few years Microshift have been upping the game and offering components that are very usable and in fact are a great choice in certain instances. This is one of those occasions.

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Another bonus of the R10 brifters is that they really work well ergonomically on the handlebars. We chose the Salsa Cowchipper bars for this project. These things are great for touring bars. When spending long hours on the bike you need to have a good selection of comfortable positions to switch through. Another requirement of a laden touring rig is stability. A good touring bar needs a bit of spread to it so as not to fatigue your arms wrestling the bikes mass.

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The hoods on these things are comfy too, not Campagnolo comfy but pretty plush. The red flash doesn’t look bad either.

The operation on these R10’s are a double lever system and pretty easy to get used to no mater what you are coming from. The actuation feels really solid and you get a definite click and release through the levers. It all feels really solid and robust however it does not require much pressure on either lever to actuate.

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The front derailleur, just making an appearance in the above picture is also from Microshift, it is quite happy to swing back and forth over a triple and doesn’t mind one bit it is going from a 48 to 24…

The rear cassette is a standard Shimano offering and, in this case, the Shimano and Microshift rear derailleurs were evenly matched. On paper they both had chain wrap capacities lower than required, however experience has shown there is always a little wiggle room and that was the case here. A Shimano 105 GS 5701 is handling the slack chain like a champ. I was expecting it to bottom out in the 24-11 but no. I know that some of these gear combos are not ordinarily used and running the chain on the two extremes is something anyone in their right mind would not do, unfortunately pedaling a fully laden touring rig up your average Alp can affect your common sense somewhat so a fully functioning shift system capable of every eventuality is paramount.

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One of the drawbacks to using the Microshift brifters is the lack of a hydraulic brake lever. I am a huge fan of hydraulic disc brakes and love the feel and power you get from them, that is not to say that cable actuated offerings are bad it is just the hydro’s are that much nicer and are to be used wherever possible in my opinion. So in this case the option was any of the cable discs, and I would have gone with Avid BB7s, or use something a little different. What you are looking at here is an hydraulic brake caliper operated by a cable. Genius. Yokozuma have been producing these units in a couple of guises now for quite some time and they are fantastic. They have a built in reservoir and you can adjust the feel quite easily via the little red turn knob, by playing around with the turn knob and where you clamp the cable you can adjust the feel of the brake lever to suit your taste. The end result is a brake that has the power and most of the feel and modulation of a full hydraulic along with the self adjusting and regulation as the pads wear down. The cable is a standard road brake, stainlesss steel and 1.5mm. The housing is a bit different, it is very substantial and is also produced by Yokozuma. Basically it is a compressionless housing with a full compression wrap over that. You could also use a standard brake if need be.

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Another component that we have used a few times now is the Cane Creek eeSilk seat-post. These are turning into real crowd-pleasers. The elastomer can be tuned to rider weight and preference. There are a few different elastomers in the box and also a small tool that really makes changing them a breeze. We have this one setup quite plush but still firm enough so as not to give the dreaded bob whilst pedaling.

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Of course no touring bike would be complete without a Brooks saddle. Built in the same way since 1866 these things are de rigueur on all touring bikes. I think it is the law… In this instance we have chosen a B17 model in a very complimentary steel blue.

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So, here we have the final result. The frame accommodates any style of racks and is equipped, for now with a base 100lb rear rack. Initially the bike will be ridden with just a rear rack bag and 2 side panniers. The fork will also accept low rider racks and will probably utilize those at some point. We tend to recommend using the low riders to keep the center of gravity down on the front and using them for lightweight bulky stuff.

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Another happy customer. “Happy Touring Alan”

A Brace Of Soma Mixte Bicycles.

The latest bicycles to leave the store this week are a pair of Soma Mixte framed, light touring bikes. I was approached some time ago to come up with a bike design for a couple in Arizona who are long time cyclists, preferring the drop bar style of riding but wanting something a little different and more relaxed. The Mixte design surely fits the bill… This frame design has always been a favorite of mine, there is just something about the twin top tubes and the multiple triangles that I have always liked. The design itself has been around for decades, I think I am correct in saying it is of French origin, certainly the name is French, “mixte” meaning mixed, which refers to the fact the bicycle was for both men and woman.

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Over the years the design has remained pretty much unchanged. Most of your major bicycle companies have had a ‘Mixte’ bike in their respective catalogs. Raleigh even have a couple of options at the moment, the ‘Carlton’. However, the geometry usually employed is very much of a recreational nature. Here is where the Soma frame really shines as it is more of a well thought out design with geometry lending itself to a drop bar build. So with the frames decided upon, here is what we did.

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Firstly pairing the frame to a matched carbon fork with a rake that further enhances the ride qualities that we are after. Obviously disc tabs as we will use a disc brake setup.

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Wheel choices next. For the ladies bike we went for Shimano XT 8000 hubs. 135mm qr at the rear and 100mm qr at the front. Spokes are DT Swiss Champion, custom cut and threaded, nipples DT Swiss brass. The rims are DT Swiss R500’s. The gentleman’s bike is the same configuration except for the rim, which is a Velocity "‘Dyad’. The rotors are centerlock 160mm front and rear. All laced up 36 hole and 3 cross pattern.

The gearing is different between each, the gents bike runs an traditional compact double 50-34 and 11-32 cassette. The ladies bike runs a smaller chain-ring setup of 46-30 as she is more of a spinner.

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Disc brakes are Shimano hydraulic units running mineral oil. These have been plumbed into the levers using Jagwire high pressure hose and modified fittings, the gold fitting onward. The hose color is orange on the mens and blue on the ladies.

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Now you can see the color schemes in all their glory. The Brifter units are Shimano non series RS 400s they are mechanical shift and hydraulic brake. I picked these particular units as the ergonomics suit the handlebar design, which are Salsa Cowchipper II. Incidentally, the shifters are a new design and have a unique pull ratio and have particular requirements for rear derailleurs, of which there is only one, some frustration on my part before I realized this…We all have off days.

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Another essential requirement for the ladies bike was some form of dampening, We did not want a standard suspension, that would give a much to squishy feel and ruin the ride completely. Just something to mellow out the vibration. Initially the idea was to use a Lauf gravel fork. For anyone familiar with those you know how good they are for just this kind of situation, unfortunately they did not make a fork with a rake and steerer tube to meet our needs here, so, we did something a little different we attacked the problem at both ends. On the stem we have used something relatively new, a “ShockStop” stem from Redshift Sports. These things are pretty neat and are tunable to rider weight using a mixture of different elastomers in various configurations inside the stem. We have set this one up perfectly for the rider. They come in many lengths and angles and for anyone looking for a little bit of dampening at the front end they are perfect. At the opposite end we have something else completely new, this time from the good folk at Cane Creek. For anyone that doesn’t know Cane Creek are suspension specialists, they have some very high end bouncy stuff, some of which will feature in our next set of builds, stay tuned for that, in this instance though it is their latest “eeSilk” seat post. These things are fantastic, again it is not what I would call a suspension post with that full bouncy feel but more of a dampener, just there to take out the vibration. Again, this is also tunable with the use of various elastomers and has been set for the rider. A little side note here, you can play around some with these elastomers, I set the elastomers for the riders weight using the manufacturers guide and then I test rode the bike. I outweigh the new owner 2 to 1 but honestly I did not find the setup too soft, so my takeaway from that is you can tweak the compliance to your preference a little softer or a little firmer. Anyone interested in making a gravel or trail bike a little less jarring needs to consider these two devices, they really are great additions to the bike. Just come in or call me if you want to know more about them.

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These bikes certainly deserve the title ‘unique’, however they hit all the design parameters. They have the responsiveness of a road bike, are very comfortable and I mean extremely so and they have the low stand-over height. The frame sizes are 61cm and 58cm, that is effective not actual. The 61 fits me like a glove and the Cowchipper bars give multiple hand positions. All in all I am pleased with the result and they are a good example of what is achievable with the many frame options out there today. Just got to think outside the box a little.

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Just a note on pronunciation; Commonly in the USA we pronounce Mixte as “Mix-Tee”, two syllables with plenty of hit on each one. In French it really should be pronounced as “Meexed” more softly and one syllable.

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My favorite bike of the year so far…

Posted on May 3, 2019 and filed under Soma, Cane Creek eeSilk, Redshift Stem.