Showing posts with label Bicycle. Show all posts
Showing posts with label Bicycle. Show all posts
Wednesday, June 2, 2010
Thursday, April 8, 2010
Training Ride 060410 @ Sengkang Area
Time: 2115
Date: 060410
Location:
Time:1hr 18min 44 sec
Distance: 36.39km
Computer average: 27.7km/h
The night training ride with TMP, the ride is fast, the group is tight. It feels more like a road race than a training ride. I like this route, quiet, with vey little traffic.
Watch the video
Date: 060410
Location:
Time:1hr 18min 44 sec
Distance: 36.39km
Computer average: 27.7km/h
The night training ride with TMP, the ride is fast, the group is tight. It feels more like a road race than a training ride. I like this route, quiet, with vey little traffic.
Watch the video
Wednesday, March 31, 2010
Training Ride on 30th Mar 2010 Starting 2100
Time: 2100
Date: 30th Mar 2010
Bike: GT Single speed MTB
Spent a lot of time fixing up my single speed. Finally it is ready for the test. The first few pedal stroke, a single speed feel so efficient. The lack of a shifting system forces me to go into "hardworking" mode. There is no chance i can outwit my bike with its multiple gears.
Each revolution feel different. The top speed tested is about 36km/h and the climb can be fast. Though taxing on the muscle and knees. The bike is fun.
The only draw back is that the torque generated by all the standing attacks and stomping caused the wheels, chain, left crank gave way.The chain dropped twice at Punggol road, the crank came loose on at Tampines road, I discovered the wheels are loose by the time i got home.
I could have got further, i was limited by my bike. They say single speed is good due to the ease of maintenance, i doubt so now, the torque is just too much for the bike to handle.
Total distance: approx 36km
Total time taken:2 hours
Speed: less than 18km/h with breaks
Monday, March 29, 2010
Changi Coastal laps on 20th Mar 2010
Time: 0630
Date: 20th Mar 2010
Bike: Cevelo Soloist
This is my routine training ride with TMP. Nice straight fast route. Hitting an average of nore than 36km/h on the coastal stretch. The feel of riding coastal is so good, windy, straight, no lights. In a pace line there is no better place than the coastal training route. It does get boring if you are doing it alone.
Total distance: approx 70km
Total time taken:3 hours
Speed: less than 20km/h with breaks
Sunday, March 28, 2010
Yiio Chu Kang CC Cycling Club Road Trip 27th Mar 2010
Yio Chu Kang CC have successfully organised a group day cycling trip for its members.
The member went through the route as described below with 2 stop point
1. Sengkang CC Mcdonalds
2. Seletar Dam
Total distance is approx 25km.
Nice ride. Hope to see more of this............
Voodoo!!!!
First ride, it feel different, lighter than its actual weight, it just feels lighter.
Parts are as follows:
1. Fame = Voodoo Erzulie "s"
2. Fork = Fox float 100 RL
Wheels
3. Wheels = Mavic Crossmax and Mavic X819 tubeless
4: Tyres: Skinny Jimmy 1.9
Transmission
5: Crank: Shimano XTR with Sugino rings 46, 34, 24
6: Brakes: Shimano XT disc
7: Shifter: Shimano LX
8: Front Derailuer: Shimano XT
9: Rear Derailuer: Shimano LX gold
Contact
10: Seatpost: Thomson 27.2
11: Handle bar: Amoeba Carbon Yan
11: Handle bar: Amoeba Carbon Yan
12: Pedal: Shimano PD-520
13: Stem: Easton EA50
14: Saddle: Velo
Monday, January 4, 2010
User Review Mavic Ksyrium
Mavic Ksyrium is one of the top end product in Mavics product line. It is a aluminium wheelset. Its main feature is its weight, it is very light.
Experience on the wheels
This wheels accelerate very quickly. It reacts very quickly to any pedal activities. Its smooth sealed cartidge bearing spins fast and holds its speed easily at 35 km/h to 40km/h range. On this wheels, climbing is easy and comfortable. The bladed spokes are not tight thus giving it a very comfortable ride quality.
Truing this wheels requires special mavic spokes key. Truing is easy and fast. The wheels goes out of true fairly frequently. I guess it is because of its light weight. In comparison to 35mm profile rims, this 25mm profile rims are so much faster.
In my opinion, this is one of the better road racing wheels anybody can have. If you ride in groups, on road with lots of start, stop due to traffic lights, i recommend this pair of wheels to you.
Happy riding.......
4 star/ 5 star
It can be better if it can hold its true.
Comparision of gearing
One of the most effective method to compare gear ration is by the use of gear inches.
In the day of high wheeler bicycles, there is no gearing. The rev per min of pedal equates to the rev per min of the wheels. The load on the pedal is determined by the diameter (radius) of the wheels.
How to do it?
1. Measure the circumference of the wheel. There are a few methods
a. you may measure the radius of the wheels with tires and multiply by 2xpi.
or b. you may roll the bike on the floor starting from the valve and end at the valve. The distance travelled on the ground is the circumference.
2. Count the teeth on the cogset. For all sprocket
3. Count the teeth on the chain ring. For all chainring
4. Make a chart of chainring divided by sprocket and multiply by wheel circumference.
5. It is done.
In the day of high wheeler bicycles, there is no gearing. The rev per min of pedal equates to the rev per min of the wheels. The load on the pedal is determined by the diameter (radius) of the wheels.
How to do it?
1. Measure the circumference of the wheel. There are a few methods
a. you may measure the radius of the wheels with tires and multiply by 2xpi.
or b. you may roll the bike on the floor starting from the valve and end at the valve. The distance travelled on the ground is the circumference.
2. Count the teeth on the cogset. For all sprocket
3. Count the teeth on the chain ring. For all chainring
4. Make a chart of chainring divided by sprocket and multiply by wheel circumference.
5. It is done.
The choice of bicycle used is predominantly determined by the format of ride chosen.
Road cycling is one of the most common format locally, bicycles used usually comes with 700c wheels, drop handlebar and double chain ring. Deviation such as triple chain ring, flat handlebar and 650c wheels are also available. Road bike comes with thin tyres ranging from 18mm to 25mm commonly. The seat angle is somewhere between 72 degrees to 74 degrees. It is suitable for smooth surfaces.
Above: An example of road bike
Another format of road cycling is Time Trial. Some of the cyclist call it Tri bike, however, the difference between the 2 is the seat angle. Sporting pursuit bar (bullhorn) with aero bar. wheels are either in deep V, trispokes or disc. The position of Time Trial bike make it every aero dynamic. Seat angle for TT bike is generally 72 degrees to 76 degrees, Tri bike usually spot a seat angle of 76 degrees to 80 degrees.Tri bikes are not UCI legal. While TT bikes are
not Mass start legal.
Credits: http://www.astana-cyclingteam.com/russian/images/beijing/Levi-TT-Bike.jpg
Track cycling is rare locally. It have its fans in other country. Usually sporting a fixed wheel with single speed. Track bikes are super bikes.
Credits: http://www.lotustalk.com/forums/attachments/f120/28499d1148139464-lotus-super-bike-lotusbike1.jpg
Off Road riding is sub divided into a few discipline. Cross country, downhill, 4X, trial, etc
In this post i shall only describe cross country cycling.
Cross country cycling or XC bikes are typically lighter then other off road bikes, it primary function is to participate in races traversing cross country terrain. Typically a cross country bike comes with a suspension fork. Some models come with suspension frame.
Frame with suspension is known as full suspension (full sus/ FS), frame without suspension is known as Hardtail (HT).
Fork is usually telescopic fork, in some models multiple linkage fork. Its travel ranges from 63mm to 100mm. Travel means the amount of verticle movement made by the lower of the fork.
Wheels are typically 26 inches, with the new standard of 29 inches. Tyres are fat ranging from 1.75 inches to 2.25 inches, with studs and patterns known as treads.
The drivetrain is usually 3 triple chain ring, with huge gear ratio. Sporting either a flat handlebar or riser bar.
Above: Cross country bike
Road cycling is one of the most common format locally, bicycles used usually comes with 700c wheels, drop handlebar and double chain ring. Deviation such as triple chain ring, flat handlebar and 650c wheels are also available. Road bike comes with thin tyres ranging from 18mm to 25mm commonly. The seat angle is somewhere between 72 degrees to 74 degrees. It is suitable for smooth surfaces.
Above: An example of road bike
Another format of road cycling is Time Trial. Some of the cyclist call it Tri bike, however, the difference between the 2 is the seat angle. Sporting pursuit bar (bullhorn) with aero bar. wheels are either in deep V, trispokes or disc. The position of Time Trial bike make it every aero dynamic. Seat angle for TT bike is generally 72 degrees to 76 degrees, Tri bike usually spot a seat angle of 76 degrees to 80 degrees.Tri bikes are not UCI legal. While TT bikes are
not Mass start legal.Credits: http://www.astana-cyclingteam.com/russian/images/beijing/Levi-TT-Bike.jpg
Track cycling is rare locally. It have its fans in other country. Usually sporting a fixed wheel with single speed. Track bikes are super bikes.
Credits: http://www.lotustalk.com/forums/attachments/f120/28499d1148139464-lotus-super-bike-lotusbike1.jpg
Off Road riding is sub divided into a few discipline. Cross country, downhill, 4X, trial, etc
In this post i shall only describe cross country cycling.
Cross country cycling or XC bikes are typically lighter then other off road bikes, it primary function is to participate in races traversing cross country terrain. Typically a cross country bike comes with a suspension fork. Some models come with suspension frame.
Frame with suspension is known as full suspension (full sus/ FS), frame without suspension is known as Hardtail (HT).
Fork is usually telescopic fork, in some models multiple linkage fork. Its travel ranges from 63mm to 100mm. Travel means the amount of verticle movement made by the lower of the fork.
Wheels are typically 26 inches, with the new standard of 29 inches. Tyres are fat ranging from 1.75 inches to 2.25 inches, with studs and patterns known as treads.
The drivetrain is usually 3 triple chain ring, with huge gear ratio. Sporting either a flat handlebar or riser bar.
Above: Cross country bike
Sunday, January 3, 2010
Current bike setup
Frame: Cervelo Soloist Team
Wheelset: Karbona Neo T2
Crank: KCNC with Rotor Q rings
Pedals: Shimano Durace
Drive train: Full Shimano Ultegra
Handlebar: Bontrager X lite
Stem: Unbranded
Brakes: Shimano Ultegra
Chain: KMC gold 9X
Saddle: San Marco
Bottle cage: Unbranded
Computer: Polar S510 and Cateye Velo 8
Bike Fitting
Bike fitting is probably the most important thing in cycling. Without a proper bike fit, a light weight super bike can be hard to ride.
There are a few contact points worth mentioning in bike fitting.
1. Saddle top to pedals
2. Stem length
3. Handle bar width
4. Handle bar drop
5. Saddle fore and aft
6. Cleats fore and aft (For clipless pedal users)
How to calculate saddle height. (Saddle top to pedals)
1. Wear you cycling shoes and stand against a wall and measure you crouch to the floor.
2. Take the measurement and multiply by 0.883
3. Make minor adjustment from there, it should be within 2cm of the most efficient seat height
Stem length.
Drop a straight edge (plumb line) from nose. It should bisect the stem. If the position to too much forward, then the stem is too short. If the position is too aft, then the stem is too long.
Handlebar width.
The handlebar should be the same as your shoulder width.
Handlebar drop
Handlebar drop affect comfort and airway. Therefore it is one of the most important measurement. As a guide, it should be 1cm top 2cm below the saddle. No doubt lower handlebar position improve aerodynamics, but, can you sustain in that painful crouch position for long?
Saddle fore and aft
As a guide, when the crank is at the 9 o'clock position, a plumb line dropo from the knee cap should be inline with the axle of the pedals.
Cleats fore and aft
As a guide, the broadest part of the feet should be on the axle of the pedals. Some individuals prefers extreme position. Personally, i love to have the axle nearer to the heels. It feels more stable and powerful.
Equally important is the geometry of the frame.
Personally, i had experience with different geometry. I can tell you, the difference is really significant. With a steep triathlon geometry of 77 degrees seat angle, i feel good in the aero position, however, on the climb, the quadriceps is unable to exert enough force onto the pedals, thus, on the climb, a steep seat angle is a disadvantage. On a 74 degree seat angle bike,the climb is easy, however, staying in aero position is painful.
This video may help
There are a few contact points worth mentioning in bike fitting.
1. Saddle top to pedals
2. Stem length
3. Handle bar width
4. Handle bar drop
5. Saddle fore and aft
6. Cleats fore and aft (For clipless pedal users)
How to calculate saddle height. (Saddle top to pedals)
1. Wear you cycling shoes and stand against a wall and measure you crouch to the floor.
2. Take the measurement and multiply by 0.883
3. Make minor adjustment from there, it should be within 2cm of the most efficient seat height
Stem length.
Drop a straight edge (plumb line) from nose. It should bisect the stem. If the position to too much forward, then the stem is too short. If the position is too aft, then the stem is too long.
Handlebar width.
The handlebar should be the same as your shoulder width.
Handlebar drop
Handlebar drop affect comfort and airway. Therefore it is one of the most important measurement. As a guide, it should be 1cm top 2cm below the saddle. No doubt lower handlebar position improve aerodynamics, but, can you sustain in that painful crouch position for long?
Saddle fore and aft
As a guide, when the crank is at the 9 o'clock position, a plumb line dropo from the knee cap should be inline with the axle of the pedals.
Cleats fore and aft
As a guide, the broadest part of the feet should be on the axle of the pedals. Some individuals prefers extreme position. Personally, i love to have the axle nearer to the heels. It feels more stable and powerful.
Equally important is the geometry of the frame.
Personally, i had experience with different geometry. I can tell you, the difference is really significant. With a steep triathlon geometry of 77 degrees seat angle, i feel good in the aero position, however, on the climb, the quadriceps is unable to exert enough force onto the pedals, thus, on the climb, a steep seat angle is a disadvantage. On a 74 degree seat angle bike,the climb is easy, however, staying in aero position is painful.
This video may help
Bicycles I owned
1993 - Chinese made BMX
1997 - GT arrowhead (Hardtail MTB)
2001 - Specialized Hardrock (Hardtail MTB)
2002 - Giant Warp DS1 (Full suspension MTB)
2003 - Giant NRS 1 (Full suspension MTB)
2003 - Trek 2300 (Roadbike)
2007 - HASA (Hardtail MTB)
2007 - Cervelo Soloist (Roadbike)
2008 - GT avalanche 2001 (Hardtail MTB)
1997 - GT arrowhead (Hardtail MTB)
2001 - Specialized Hardrock (Hardtail MTB)
2002 - Giant Warp DS1 (Full suspension MTB)
2003 - Giant NRS 1 (Full suspension MTB)
2003 - Trek 2300 (Roadbike)
2007 - HASA (Hardtail MTB)
2007 - Cervelo Soloist (Roadbike)
2008 - GT avalanche 2001 (Hardtail MTB)
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