Part 2: Bike Disassembly and Component Weight
Part 3: Installation of New Components
Finally, this is the last part of the Wheelsport Fantasy 2x10 Speed Flat Handlebar bike upgrade! In the previous posts, the original bike components have been documented, and the stock bike disassembled. After that, the bike was rebuilt with a mixture of stock and new components.
In this post, I will finish up this bike upgrade, and compare it to the Dahon Boardwalk in terms of bike geometry.
Shimano 105 5700 10 Speed Crankset, 53/39T, taken from the Dahon MuEX
BB guide as shown mounted under the frame. The inner cable on the left leads upwards to the FD, while the inner cable on the right leads to the RD.
Rear shifter outer casing, shown here with a long nose end cap, to better protect the inner cable from wear and tear. Shimano 105 5700 10 Speed Rear Derailleur from the Dahon MuEX is used here.
Shimano 105 5700 Double FD as mounted onto the FD mount provided on the frame
With the full drivetrain mounted! All black to match well with the frame.
Gear range and ratios for this drivetrain setup, with 13 unique gears. 451 wheelset with 53/39T crankset and 12-30T cassette. This gear range should be good for any terrain.
Front brake calipers installed. Small clearance between tire and brake caliper, which means that wider tires (>25mm wide) cannot be used.
Rear brake calipers as installed on the bike. Once again, the small tire clearance limits the maximum tire size that can be used.
The length of the rear brake outer casing needs to be just right. Too short and it would stretch during braking, too long and there would be excessive friction.
Round 3M frame protection stickers have been pasted at strategic locations, to prevent the outer casing from rubbing away the paint on the frame.
With that, the upgrade from 1x9 speed to 2x10 speed is complete! Here is more info regarding the weight of the upgraded bike, and also some added accessories for the bike.
Full specs of the upgraded bike. Good weight of 8.8 kg without pedals! Just a little bit lighter than the original bike weight of 8.9 kg (excluding pedals and kickstand). This is despite adding around 300 grams with the addition of the front shifter, FD and cables.
The D-Light rear light fits perfectly on the seat tube, within the small triangle on the frame.
The D-Light front light also fits nicely on the handlepost, keeping the handlebar clutter-free. Mounted in a similar way to that on the Merida Scultura 5000.
Cateye Strada Wireless cycle computer mounted on the stem, in a very visible location
Side view of the upgraded bike
Looking pretty good!
With a folding handlepost, the handlebar can be folded down to make the bike really flat for storage, as seen here. This makes the bike a semi-folding bike?
When hanging the bike on the Minoura Bike Tower 10, the small frame does not really fit on the hooks properly
The front hook is OK, as it can grip the frame fully
However, the rear hook cannot hold the frame fully, as the frame top tube is too short. It will tend to touch the rear brake cable. Still, it is possible to hang the bike on this bike tower.
Lastly, the geometry of the Wheelsport Fantasy mini velo will be compared to the geometry of the Dahon Boardwalk. This will show the difference in geometry for this bike, as compared to the well established geometry of the Dahon folding bike. To compare the bikes, the BB is used as the datum and reference point. This means aligning the bikes such that the BB of the bikes are aligned beside each other.
The rear chainstay length of the bikes are slightly different. Dahon is 400mm, Wheelsport is 420mm. A longer chainstay contributes to a more stable bike at high speeds, but is also less agile.
Although the handlepost of the Wheelsport tilts much further backwards, unlike the vertical angle on the Dahon, the Wheelsport has a stem that brings the handlebar forward.
As seen here, the handlebar of the Wheelsport is located quite a bit higher and also rearwards. This creates a more upright riding position for the Wheelsport bike, which can be good or bad, depending on rider preference. Great for more leisurely rides, but not ideal for faster rides.
Side view of the bikes for comparison. Overall, the Dahon still has a longer wheelbase of 1020mm, while the Wheelsport mini velo has a wheelbase of 1000mm.
This upgrade is finally completed! I am glad to have had this chance to upgrade the Wheelsport Fantasy 2.0 mini velo, and I learnt quite a bit during the process. The bike has been nicely upgraded to a high performance 2x10 speed drivetrain, using mostly components taken from the Dahon MuEX (which has been upgraded to Ultegra/XTR Di2).