Weis Hammer Ti | fixedgear

Weis Hammer Ti | fixedgear
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Thank You For Watching!
#TerryBarentsen #cycling #fixedgear

[curtishoyt]

Terry you're the best YouTuber. Also holy shit this sled is sweet.

[itscochino]

Tony is insanely fast. I've seen him smoke folks down in San Diego and it was wild

[abedua]

Fixed gear ratio of 28 17
ChatGPT said:

ChatGPT
A fixed gear ratio of 28:17 refers to the relationship between the number of teeth on the chainring (front sprocket) and the rear cog (rear sprocket).

Calculating Key Parameters:
Gear Ratio:
Divide the chainring teeth by the cog teeth:
Gear Ratio
=
28
17
≈
1.65
Gear Ratio=
17
28
​
≈1.65
This means that for every full revolution of the pedals, the rear wheel will rotate approximately 1.65 times.
Gear Inches:
Gear inches are calculated using the wheel diameter (including the tire). For example, with a typical 700c wheel with a 28mm tire, the diameter is roughly 27 inches:
Gear Inches
=
Gear Ratio
×
Wheel Diameter

Substituting:

Gear Inches
=
1.65
×
27
≈
44.6
Gear Inches=1.65×27≈44.6
This indicates how far the bike will travel with each pedal revolution.
Cadence and Speed:
If you pedal at a cadence of 90 RPM, you can calculate the speed using the gear inches and a conversion factor:
Speed (mph)
=
Gear Inches
×
0.003
×
Cadence

Substituting:

Speed
=
44.6
×
0.003
×
90
≈
12
m
p
h
Speed=44.6×0.003×90≈12mph
This gear ratio is suitable for moderate speed and control, often used in urban or track settings. Let me know if you need more details!






You said:
How fast can you go in this ratio
ChatGPT said:

ChatGPT
To determine how fast you can go with a 28:17 fixed gear ratio, the speed depends on:

Cadence (how fast you pedal, measured in RPM).
Wheel Diameter (including tire size, typically around 27 inches for 700c wheels with tires).
The formula for speed is:

Speed (mph)
=
Gear Ratio
×
Wheel Diameter
×
0.003
×
Cadence

Using a gear ratio of 1.65 and a wheel diameter of 27 inches, we can calculate speed at different cadences:

60 RPM (casual pedaling):
Speed
=
1.65
×
27
×
0.003
×
60
≈
8
m
p
h
Speed=1.65×27×0.003×60≈8mph
90 RPM (moderate effort):
Speed
=
1.65
×
27
×
0.003
×
90
≈
12
m
p
h
Speed=1.65×27×0.003×90≈12mph
120 RPM (sprinting):
Speed
=
1.65
×
27
×
0.003
×
120
≈
16
m
p
h
Speed=1.65×27×0.003×120≈16mph
150 RPM (high-speed sprint):
Speed
=
1.65
×
27
×
0.003
×
150
≈
20
m
p
h
Speed=1.65×27×0.003×150≈20mph
Maximum Speed:
For most riders, a cadence of 120–150 RPM is the upper limit. With this ratio, you can expect a top speed of around 16–20 mph, depending on your pedaling ability.





You said:
Is this ratio hard to pedal?
ChatGPT said:

ChatGPT
Whether the 28:17 ratio is hard to pedal depends on factors like your fitness level, terrain, and how fast you want to ride. Here's an analysis:

1. Effort on Flat Terrain:
With a gear ratio of 1.65, this setup is on the easier side compared to typical fixed-gear setups.
It’s well-suited for flat roads or urban commuting. It allows for a relatively high cadence and quick acceleration, making it easier to handle stop-and-go traffic.
2. Climbing Hills:
This ratio is decent for climbing moderate inclines, as it’s easier to turn the pedals compared to higher gear ratios like 46:16 or 48:17.
However, on steep hills, it might still feel tough since you can’t shift gears on a fixed-gear bike.
3. High-Speed Riding:
At higher speeds, the 28:17 ratio can feel limiting because you’ll "spin out" (pedal too fast to maintain power). If you plan to ride fast or downhill often, you might find this ratio too easy.
4. Riding Style:
Beginner-Friendly: Great for new fixed-gear riders because it’s not overly demanding.
Experienced Riders: Might find it too light, especially if they’re used to pushing bigger gears.
Final Thoughts:
On flat terrain or rolling hills, this ratio is easy to pedal and great for casual rides or city commutes.
For fast riding, downhill speed, or steep climbs, you might need a different ratio (like 46:16 for speed or 30:20 for hills