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13

Typically the majority of their yearly R&D is spent on their top of the line group, then they will trickle down it's technology to the next lower group, and continue that way, so usually, this years tiagra is close to last years 105, etc. The major thing to look for is # of speeds in a group, weight, and finish. I believe the 2010 Sora(3400) set is ...


12

There's a couple of things here. First there are the physical properties of the groupsets. As you move up the groupsets, what you're buying into is essentially smoothness and lightness. But for a recreational rider, you'd basically need the groupset to hit a certain minimum level of quality, and anything beyond that would be lost by the rider. And my ...


12

The name of the company you're looking for is Shimano (with one n, not two)


12

This is one of those questions that can start arguments between bike mechanics--to cross or not to cross the derailer cables. Crossing appears to be becoming more common on new bikes, if the cables aren't internal, but it's also going to depend upon the bike. Smoother shifting is reported by some from crossed cables. I would talk to the mechanic at your LBS ...


10

This is an odd question. The sentiment that the only security here is physical security is correct. Think about the following: The Shimano Di2 components are not mated/matched to a specific computer or instance of E-Tube software. So there's no 1:1 relationship. Therefore, any computer equipped with the SM-PCE1 or SM-BCR2 programming cables can be used to ...


10

To prevent galvanic corrosion. When grease is appied, there is a thin film of grease that prevent direct contact between two different metal. To prevent water and contaminants, especially salt in the winter season, that would otherwise accelerates corrosion as discussed in (1) This will not work with plastic or carbon fiber (+epoxy as matrix) materials as ...


9

Answer: No you don't need a new hub. However, you will probably need to put a small (~1mm) spacer at the back of the cassette, otherwise you won't be able to tighten the whole cassette down. Also be aware that prolonged use of a 10-speed cassette on an 8/9-speed freehub body will cause dents to form in the freehub body (because the 10-speed cogs are so ...


9

Presumably with 12K+ km, and never having bought new chain rings, you have a very high cadence. You should get a new chain every time you change your cassette, btw. If you are doing the work yourself, I don't see any reason to change the chain ring immediately. Try the new cassette and chain and see how it works. If it isn't broke, don't fix it. If it ...


8

These are just editions of specific product lines. It's the same as BMW with the 3-series, 5-series and 7-series. Let's take Shimano Dura-Ace, for instance. It's traditionally a 7000-series of product numbers. 7200 - 1978-era Dura-Ace 7400 - Mid-to-late 1980's 7700 - 9-speed Dura-Ace ~ late 1990's 7800 - 10-speed Dura-Ace ~ 2000's 7900 - Current ...


8

That particular Shimano freehub can be disassembled, but it is quite a job to get it back together afterward. There are around 80 2mm bearings in two different locations in the freehub, and a skilled and practiced mechanic has roughly a 60% chance of opening without losing parts, and successfully getting it back together. The good news is, there is a tool ...


8

Assuming the hub is a freehub design (the freewheel mechanism is in a splined body onto which the cassette (sprockets) fit), no. 8, 9 and 10 speed cassettes are all the same width. See: http://www.sheldonbrown.com/k7.html#10cassettes


8

As long as you existing rotors are in good condition and thicker than 1.6mm (minimum safe thickness) you should have no issue with using them with the Shimanos. There doesn't seem to be an industry standard specification for rotor thickness but it is generally taken to be between 1.8mm - 2.0mm. The new callipers will self adjust to the rotor width. Clean ...


8

I have seen this frequently and routed my cables this way. By routing the shifter cable from the right side of the handlebar around the stem to the cable boss on the left side of the frame (and visa versa) I create a more gentle bend in the in the cable housing. A gentler bend creates less internal friction on the cable. Another benefit is less stress on the ...


8

It depends on your cadence (number of times you're turning the chainrings). If you fix the cadence, largest chainring (gear in the front) and smallest cog (gear in the back) will be fastest. In practice, you will not be able to keep up the same cadence on all gear combinations, so depending on the cadence you can keep, a smaller chainring in the front and ...


8

Yes. Barrel adjusters are reusable. More useful for the front mech which doesn't have any on-the-fly adjustment. And useful for the rear mech for quick adjustment without having to get out of the saddle.


7

You will need a 10-speed cassette, 10-speed rear derailleur, and 10-speed right side shifter and a 10-speed chain to work with the narrower spacing on the rear cassette. There tend to be some compatibility issues with 9-speed derailleurs run on a 10-speed drivetrain (some people seem to have luck using 9-speed shimano mountain derailleurs with 10-speed ...


7

From your photo, the left pulley (beefier, with metal bushing) is the top one, which goes closer to the cassette. I know that because that's how things were in every shimano derailer I had over the years, and I think that makes pretty much sense, since the beefier pulley (the upper one) actually shifts the gears, while the bottom, thinner one is only an ...


7

The picture is a RD-M780-SGS long cage. Shimano have three codes for rear derailleur length: Short - SS Medium - GS Long - SGS I'm not aware of where this is printed on the RD though so not so helpful. However Shimano only have one non-clutched XT Dyna-Sys (10 speed) RD the RD-M780-SGS (long cage 43t capacity). The clutched (shadow+) RDs come in GS ...


7

First, make sure your bike is fit properly - with a bad fit, your efficiency is likely lousy. More sprockets is not necessarily going to make you go faster/easier - changing gear appropriately and becoming more physically fit will (along with better selected sprockets sizes - we went ages before the Gillette razor-blade increase in rear sprockets...). Most ...


7

I-spec is a Shimano-proprietary mounting system for Shimano parts. Its supposed to make mounting and adjusting brake+shift levers faster and easier by putting them on one mounting clamp. I couldn't find a blurb on what it does / how it operates on the Shimano website, but the equivalent for SRAM is SRAM Matchmaker, which from their website: "The ...


7

They still exist - they just aren't high enough in quality/product line to appear on the front page for Shimano (i.e. they aren't useful marketing points for Shimano, but you can still order parts in those groups from most cycling retailers - almost everyone who buys Tourney/Altus is an OEM or a bike shop who needs something very cheap for repairing BSO's; ...


7

That is normal behaviour. You pushed the piston way out, so oil from behind it found a way out. General actions suitable for your case as well: remove wheel remove pads carefully push the lever a couple of times in order for the pistons to extend a couple of mms. if one is stuck, make sure you push the other one with a plastic tyre lever while pulling the ...


6

While price is not the defining factor, there is no doubt that it is a key indicator of quality. List of Groupsets Below is a list of the three largest manufacturer's groupsets for Road and MTB applications. Each manufacturer's offering is arranged in descending price/quality. The number of sprockets of the cassette in each groupset is shown in ...


6

The Deore XT is a mountain bike derailleur and as such has is long cage dérailleur. Long cage dérailleurs can run larger cassettes for a larger gearing range (at the cost of larger jumps between gears). I don't know what the Shimano product selection was like in 1999, but you can now get Shimano 105 as either long or short cage depending on your set up (see ...


6

As long as you use a Shimano brake caliper designed for a road STI lever, which is any Tiagra, 105, Ultegra, or Dura-Ace, they will work not just well, but perfectly. There may be a performance difference, but there will not be a compatibility difference. Even most 3rd party brake calipers will work just fine. New additional information: Starting with ...


6

The simple answer is yes, you can just change the crankset without replacing the entire drive train however there are other considerations. Depends on if your changing rings out or replacing the set and cranks. Other considerations if doing a full replacement are: Chain line When selecting a new crank set you need to ensure it aligns with the current ...


6

I don't know anything about bottom brackets, but I found this document which says (on page 16): Shimano cartidge-bearing bottom-bracket spindles are marked with letter codes that correspond to different length spindles. These codes and the corresponding spindle lengths are: Code Length MM 107mm and 110.5mm LL 113mm D-H 115mm YL ...


6

Simple answer would be that it's heavier, which is very important in road-bikes. Regarding the cable friction and smoother shifting, road shifters are going towards electronics


6

Trek Fuel ex8 - has hydraulic disc brakes. Hydraulic disc brakes do not require adjusting - they are self-adjusting. In that, as the pad wears - the distance between pad and disc is adjusted automatically. The squeaking and squealing of disc brakes is a common complaint. My first advice would be to - bed the pads in - make sure the discs and pads are clean ...


6

Shimano/SRAM 11 speed cassettes are wider than 8/9/10 speed ones. So yes, you need a new, wider freehub body, unless your old one was not very old and used a spacer to fit a 10-speed cassette. People with non-Shimano brand hubs are less likely to find replacement freehub bodies, it seems, leading to replacement of the whole hub, or even the whole wheel if ...



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