75 tooth chainring
09-30-12, 07:08 PM
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75 tooth chainring
I was bar tending friday night and had a conversation turned argument about bikes with a rather intoxicated patron. He told me that his "custom" time trial bike, which was a trek just like lance armstrong, with mavic wheels(facepalm) could go 50 mph on flats. I basically told him hes lying and that is impossible unless you were a radioactive mario cipollini. He didnt get it. But he told me that his bike has a 75 tooth chainring and that when it is in his 11t cog, at 120 rpm "not him but someone" could get that fast. he did the math. I then told him that he didnt have a 75 tooth chainring and that unless his was custom made which it was not, that this is utter bull poop. He didnt tip me very well.
Is there even such a thing as 75t chainring. i know Grahme obree had a huge one on some tt bike he built but ive never seen anything over 60.
So either he was uninformed like i suspect or i just shunned a time trial god.
Is there even such a thing as 75t chainring. i know Grahme obree had a huge one on some tt bike he built but ive never seen anything over 60.
So either he was uninformed like i suspect or i just shunned a time trial god.
09-30-12, 07:18 PM
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S #it. well i guess i have to eat this one. He was still an a hole though.
09-30-12, 07:19 PM
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arguing with a drunk ? sounds like fun 
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09-30-12, 07:44 PM
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You lost me at drunk 
09-30-12, 07:53 PM
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09-30-12, 08:03 PM
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Meh, a 75T is OK for a bailout gear...
09-30-12, 08:08 PM
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09-30-12, 08:25 PM
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So, uh, what kind of power output are we looking at for this 50mph in the flats?
09-30-12, 09:11 PM
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09-30-12, 09:12 PM
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What's the story with that one? Can someone really be faster riding out of the saddle for an entire track race?
09-30-12, 09:19 PM
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09-30-12, 09:23 PM
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It is above the rear wheel and just behind his butt in this photo: https://www.canosoarus.com/08LSRbicycle/LSR%20Bike01.htm
09-30-12, 09:25 PM
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This is apparently the FB page of the owner of the 80/100 chainrings: https://www.facebook.com/abilio.lagoa
And while I was googling for that, I found this: https://www.socaltrailriders.org/foru...1&d=1314409971
And while I was googling for that, I found this: https://www.socaltrailriders.org/foru...1&d=1314409971
09-30-12, 10:09 PM
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10wheels, are those your personal rings and is that you in the picture? did you have them machined? and was the lack of saddle for weight or motovation?
09-30-12, 10:11 PM
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Last edited by 10 Wheels; 09-30-12 at 10:19 PM.
09-30-12, 10:19 PM
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108 MPH May 1941
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Last edited by 10 Wheels; 09-30-12 at 10:23 PM.
09-30-12, 10:32 PM
#23
Bicycle Repair Man !!!
The massive chain wheels are used in motor pacing, there is a record category for seatless riding where the gearing tends to be higher due to the standing position and lower rpm used.
10-01-12, 06:19 AM
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