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Written: 2020.04.30   Review Date:2020.04.30    LastUpdate: 2020.05.14

Information websites, mail order suppliers,

1. Preface
2. Geometry Sites
3. Questions
4. Cycling Builder
5. Shimano Groupset and Series Information

1. Preface
This page is linked to from all my bike database listers. See Bike Models

I'm not sure it is useful. It may be a leftover from when it was within bivouac.

2. Geometry Sites
Both these websites allow you to compare the geometry of various bikes.

     Geometry comparison. Allows you to select two bikes, then lists the specs side by side. I compared a Surly LHT 2018 with Trek 520. I see trail is much higher on Surly than Trek

     Has a form where you enter some measurements, and it adjusts the diagram. So you can design your own frame.


  3. Bike Exchange Geometry Charts
     SaysStack and Reach immediately tell you if a bike will fit you. But then handling is determined by Head Tube, then they get into Fork,Rake and trail. Says Top tube effective is good way if Stack and Reach aren't given. Finally Chainstay and wheelbase, and BBDrop.

3. Questions
msekella <>

  1. Outboard Octalink?
     Under Shimano Alivio, the Product Specifications for FC-M4060 say "compatible BB Type is "Outboard". Yet the technology is "Octalink". I thought Octalink was a cartridge, and that cartridges had their bearings inside the shell, like square taper. I thought Octalink was like square taper except instead of a square taper, the crank pushes onto a 8 spline shaft. So how can it be outboard? See Youtube "Replacing a Shimano Octalink BB-ES25 Bottom bracket Cartridge"

  2. What does "3mm outboard chain line mean?" See FC-MT210-B2

  3. How do Shimano series work?
     Eg: The FC MT210-B2 is
     How do they relate to groupsets?


  4. Why is there no Shimano documentation for Altus
     I see dozens of stores like MEC selling Altus parts, yet I see no reference to that on any Shimano website. (Is it under Groupsets somewhere?)

3.5. Cycling Builder
Summary: This is a program I briefly investigated which theoretically has all the relationships between parts. Eg: You pick the frame, and then pick the parts that will go with it.

Conclusion: Does not work well enough to be useful for me. I started with "Frame", and I saw the Surly LHT. I got as far as "cassettes" and noticed that there were zero 8 speed cassettes. So I tried 9 speed and tried to filter on the 36 tooth one. 11-36 In order to really work, you'd have to choose a whole groupset. What I really want to see what could be done with a familiar frame, like Norco, and put a whole groupset on it.

So it could know that Surly has 135mm dropouts. The acid test is to go to wheels. It came up with 2 wheel sets, both 135mm dropout. But no price or merchant.

In order to use my system to build a bike, you'd pick each part according to the frame specs: It would be easiest to pick a whole groupset. Eg: Sora. I see crank, cassette, deraileur, shifters levers. R3000 of Sora drive train. R3030

  There seems to be a website called, and they refer to a site called

 - I found Surly on list.

  Choose Bar Type
  Choose Grips
  Choose A Stem
  Choose a Front Brake/Shifter

  So now I went to the second item, which is Handlebar. I chose
  FSA Adventure Compact 31.8 x 40 cm Drop Handlebar

It tells me I can buy one at Chain Reaction for 60.99 + 86.98 shipping
 - they have some concept of sending an alert if the price drops below a "set" point
 - they have 3 filters. Width: 400, 420, 440, and have the weight.

5. Shimano Groupset and Series Information

     Has overview of Shimano Altus Groupset.

     - I observe that "Alivio groupset appears both under MTB and Trekking. Under Trekking you see FC-T4060 and T4010, but under MTB you see 4 cranks.

 While we are going to look at the M4000 series from the 2018 edition of Shimano Altus the origins of this groupset remain the same and the design changes have a direct impact on performance. The Altus groupset consists of the whole range of components including, derailleurs, shifters, cranksets, brakes and bottom brackets. Found on both entry and mid-level MTB’s and hybrids, this groupset has been there in the market for a long time and seen constant upgrades to get maximum performance at pocket friendly price.

The Shimano Altus groupset have always been the first step towards performance focused cycling. The new M4000 series has seen a massive upgrade in terms of design and performance with lot of inspirations derived from their higher-level Acera/Alivio components. An MTB with Altus componentry will help the rider get a complete off-road experience.

 - there are Alvio M4000