Frame geometry
#1
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From: central Ohio
Bikes: Schwinn Madison, Windsor Dover
Frame geometry
Hello everyone. Please help me understand this a bit - is it the lower the degree numbers the more relaxed geometry regarding seat tube and head tube angles. Example, a ST and HT angle of 72 degreed is more relaxed than a ST and HT of 73.5 degrees (same frame sizes)? Is there that mch difference in handling and feel between these numbers?
Reason I ask, I am looking at a couple single speed road bikes, both 58cm. One of them is labeled as a track bike, but it has the 72 degree HT and ST angles, while the other is labeled a road single speed and has 73 and 73.5 HT and ST angles. I would the track bike would have steeper angles than the road bike, no? Perhaps just manufacturer specs and the "track/road" labeling really has nothing to do with it? Thanks.w
Reason I ask, I am looking at a couple single speed road bikes, both 58cm. One of them is labeled as a track bike, but it has the 72 degree HT and ST angles, while the other is labeled a road single speed and has 73 and 73.5 HT and ST angles. I would the track bike would have steeper angles than the road bike, no? Perhaps just manufacturer specs and the "track/road" labeling really has nothing to do with it? Thanks.w
#2
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Joined: Apr 2009
Posts: 39,897
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Head and seat tube angles are measured up from the horizontal, so 90° means vertical and bigger numbers mean steeper (closer to vertical) than smaller values.
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Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
#3
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Joined: Dec 2009
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From: Melbourne, Oz
Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231
Reason I ask, I am looking at a couple single speed road bikes, both 58cm. One of them is labeled as a track bike, but it has the 72 degree HT and ST angles, while the other is labeled a road single speed and has 73 and 73.5 HT and ST angles. I would the track bike would have steeper angles than the road bike, no? Perhaps just manufacturer specs and the "track/road" labeling really has nothing to do with it? Thanks.w
#5
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Joined: Aug 2009
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From: central Ohio
Bikes: Schwinn Madison, Windsor Dover
https://gravitybikes.com/specialty/attack.html
Seems pretty relaxed for a so called Track bike, but then just because they call it "Track" surely doesn't mean so. I mean, it comes with brakes so it surely isn't a track bike. However, I am not wanting a track bike, just wanting a single speed freewheel for road riding so the laxed geometry is fine with me
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