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Search: Posts Made By: tetonrider
Showing results 1 to 50 of 496
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Forum: "The 33"-Road Bike Racing
05-02-18, 09:52 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

in a wind tunnel (which is where the data for...

in a wind tunnel (which is where the data for those charts are coming from), the don’t use QR (asymmetrical) skewers.
Forum: "The 33"-Road Bike Racing
05-01-18, 01:13 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

modern shimano group sets are pretty darn...

modern shimano group sets are pretty darn maintenance free (in terms of adjustments), that your comment surprised me.



i get that. wireless sounds better.

did any of the eTap failures cause...
Forum: "The 33"-Road Bike Racing
05-01-18, 12:38 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

had a long convo with a buddy the other day. i...

had a long convo with a buddy the other day. i like the GP4000s a bunch and think they strike a good balance between being fast and survive some reasonable wear. that said, i think the turbo cottons...
Forum: "The 33"-Road Bike Racing
05-01-18, 10:44 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

my point was that brake cables are being routed...

my point was that brake cables are being routed internally, so even if one has eTap there is still some internal work to be done. also, brake cable maintenance is a separate thing.


tweak...
Forum: "The 33"-Road Bike Racing
05-01-18, 02:28 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

nah, better to use cheap tires, a discount...

nah, better to use cheap tires, a discount saddle, and cheap bars/tape/levers while splurging on a 12r carbon frame instead of 10r. ;-)

srsly, i think riding good tires/tubes makes a big...
Forum: "The 33"-Road Bike Racing
05-01-18, 02:27 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

judging by regular participants around here, i've...

judging by regular participants around here, i've probably used electronic groups the most/longest. i've crashed out of races hard enough to break my femur. been hit by a car hard enough to crack my...
Forum: "The 33"-Road Bike Racing
05-01-18, 02:21 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

wheels are basically symmetrical, esp rim brake...

wheels are basically symmetrical, esp rim brake wheels as tom prefers. :)

bikes are not symmetrical. if you remove a FD you can see the effect on drag.
Forum: "The 33"-Road Bike Racing
05-01-18, 02:19 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

no, it should not. the drivetrain has a material...

no, it should not. the drivetrain has a material impact on aerodynamics.

that said, look at the units on the y-axis. these are not enormous differences.

more telling would be rider + bike;...
Forum: "The 33"-Road Bike Racing
05-01-18, 02:17 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

no one will notice the length of your valve stems...

no one will notice the length of your valve stems when you are riding faster due to that extra ~5w. ;-)
Forum: "The 33"-Road Bike Racing
04-30-18, 06:09 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

until eTap offer wireless braking, you still have...

until eTap offer wireless braking, you still have to do maintenance with internal wiring.

Shimano's Di2 is pretty much maintenance-free (for shifting), so the installation is a one-time thing....
Forum: "The 33"-Road Bike Racing
04-18-18, 01:52 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

just go with the electronic group that shimano...

just go with the electronic group that shimano has had for CX for years now. i've been running it for a long time.

installation of electronic wires is a 1-time thing; no big deal.

(i get why...
Forum: "The 33"-Road Bike Racing
04-15-18, 01:43 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

this is why it is important for people to...

this is why it is important for people to understand why and when to use different combinations.

"zOMG <insert pro's name, but Bert Grabsch was really known for it> runs a 58T ring so he must use...
Forum: "The 33"-Road Bike Racing
04-07-18, 11:15 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

How accurate is your scale? If you’re...

How accurate is your scale?

If you’re talking about a bathroom scale they are often +/-0.2# (even if they read out to the tenth). May want to check what that does to your calculations esp if it is...
Forum: "The 33"-Road Bike Racing
04-07-18, 11:07 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

I agree with the first part, but data is data. ...

I agree with the first part, but data is data.

The rim brake version was as aero as the original Venge. At this point disc calipers and rotors increase drag. That may change in the future (though...
Forum: "The 33"-Road Bike Racing
04-06-18, 11:27 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

The goal was to be lighter and more aero, not...

The goal was to be lighter and more aero, not heavier and slower. ;-)
Forum: "The 33"-Road Bike Racing
04-06-18, 11:20 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

What is your goal? Are you trying to prove the...

What is your goal? Are you trying to prove the vectors are accurate or consistent?

Looks like you are basically testing the slope.

Ideally you want a larger mass (larger will yield lower...
Forum: "The 33"-Road Bike Racing
04-06-18, 11:13 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

No. The point of the tunnel is to model static...

No. The point of the tunnel is to model static wind angles. They produce data. It is up to the rider to turn that into information useful on course.

You can have the tunnels run at different wind...
Forum: "The 33"-Road Bike Racing
03-25-18, 11:30 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

tunnel data doesn't answer every question. i'm...

tunnel data doesn't answer every question. i'm assuming you've been in tunnels before so you already know this, but i tend to find each 'answered' question raises more questions.

that said, wheel...
Forum: "The 33"-Road Bike Racing
03-25-18, 10:45 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

agreed. it bothers me when people test 23,...

agreed.

it bothers me when people test 23, 25, 28 at the same pressure.

then again, most (all?) tires exhibit different Crr at different pressures -- and the changes are not linear not...
Forum: "The 33"-Road Bike Racing
03-24-18, 07:54 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

in my own testing and all the testing i've read,...

in my own testing and all the testing i've read, michelins haven't come out on top.

best thing to do, though, is one's own Crr testing. it's pretty easy with a set of rollers and answers lots of...
Forum: "The 33"-Road Bike Racing
03-24-18, 07:53 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

i know those roads and races. you are...

i know those roads and races.

you are RACING, right? this is a RACE bike?

your first line talks about training. i do advocate the 50/34 for training--that can be helpful. still think you can...
Forum: "The 33"-Road Bike Racing
03-24-18, 07:03 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

with the riding i've seen from you, i don't think...

with the riding i've seen from you, i don't think you'd need anything less than 39x28 for any race i've done in UT-CO-AZ-NM-CA-NV-OR.

i'm more of a spinner, and i've had situations where i...
Forum: "The 33"-Road Bike Racing
03-24-18, 06:59 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

answer is "probably not." then again,...

answer is "probably not."

then again, pulleys are not that pricey, so 2x is also not that pricey.

the shimano ones are fine... better than fine, actually.

bearings that are *better* often...
Forum: "The 33"-Road Bike Racing
03-20-18, 11:13 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

sure--just let me know. i get stuff for cost and...

sure--just let me know. i get stuff for cost and have these hanging in my garage--i can always get more if it helps you out in the short term. i have no short-term need.

maybe you'll notice some...
Forum: "The 33"-Road Bike Racing
03-19-18, 07:01 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

i've got some vittoria evo CX II & IIIs (same...

i've got some vittoria evo CX II & IIIs (same thing) in 700x23 and a couple corsa G+, also in 700x23.

could probably hook you up if it helps.

both are excellent and the evo cx's would be a...
Forum: "The 33"-Road Bike Racing
03-19-18, 06:58 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

dude... that has been covered SOOOO many times! ...

dude... that has been covered SOOOO many times!

unless you are a pro rider or you get your tubes replaced with latex (not such a huge deal), you're running butyl Contis and they don't roll nearly...
Forum: "The 33"-Road Bike Racing
03-15-18, 04:34 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

i'm aware. i wasn't in college in 1970, but for...

i'm aware. i wasn't in college in 1970, but for as l long as i've been involved in audio the idea of adding more weight to something that wasn't designed for it has bugged me.

was also just...
Forum: "The 33"-Road Bike Racing
03-15-18, 04:16 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

the tracking force on my cartridge is 1.7g. (i...

the tracking force on my cartridge is 1.7g. (i think a quarter is ~5g, for reference.)

quarters on tonearms always pained me.

it's like riding a mountain bike with terrible suspension --...
Forum: "The 33"-Road Bike Racing
03-15-18, 04:14 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

i do. MTB. it's fine. you're not...

i do. MTB.

it's fine.

you're not really going to be able to tell any difference, other than price.
Forum: "The 33"-Road Bike Racing
03-14-18, 12:37 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

4 quarters seems like a lot! I think it’s a...

4 quarters seems like a lot!

I think it’s a red herring (even descending at up to 60mph) through I know others who claim to be sensitive to it.

Tubular? Do it right. Pull the tire and use a...
Forum: "The 33"-Road Bike Racing
03-12-18, 12:32 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

championship race? what's the championship going...

championship race? what's the championship going on in march?
Forum: "The 33"-Road Bike Racing
02-23-18, 11:36 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

i've ridden the 32 SC for a couple years (have 2...

i've ridden the 32 SC for a couple years (have 2 of them...it's good enough that i bought a 2nd) and the Lefty.

the Lefty is definitely the better fork (it's light, but that single stanchion is...
Forum: "The 33"-Road Bike Racing
02-23-18, 08:39 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

Oh, gotcha..... duh. I just looked at the...

Oh, gotcha..... duh.

I just looked at the back of the bike and thought it was a TT bike; now I see the drop bars. Oops.

Sorry!

Scalpel-Si is even better than the older one, which was really...
Forum: "The 33"-Road Bike Racing
02-23-18, 08:14 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

scalpel's a great bike. better since they updated...

scalpel's a great bike. better since they updated the geometry. that was a great move.

out of curiosity.... why are you so excited for disc for a TT bike?

cannondale's had an aero bike for a...
Forum: "The 33"-Road Bike Racing
11-03-17, 04:36 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

isn't it vomit if it gets thrown up? ...

isn't it vomit if it gets thrown up?



when someone has a race within 8 weeks, i recommend living in isolation, cutting off all ties to the outside world. it's the safest option.
Forum: "The 33"-Road Bike Racing
10-14-17, 03:33 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

not gonna click this time. fool me once... ...

not gonna click this time. fool me once...

guessing it is a video that shows many bikes, and i've seen bikes before. i can look in my garage for an image of that. :-)

hee hee
Forum: "The 33"-Road Bike Racing
10-14-17, 03:16 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

of course i can't keep track of your bikes, but...

of course i can't keep track of your bikes, but you wrote that you had a BB30 bike with SW carbon cranks (sounds like a specialized bike) and you moved those cranks to the shiv (shivs have always...
Forum: "The 33"-Road Bike Racing
10-14-17, 02:04 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

but... did you not think any of use would know...

but... did you not think any of use would know what a dura ace crankset looks like without posting a video? :D



if you are a fan of wider cranks for your kid, why not put them on the shiv, too?...
Forum: "The 33"-Road Bike Racing
10-14-17, 01:52 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

... only worth more when it is something too...

... only worth more when it is something too difficult to describe in words or a single still image. :)

seriously, had your video even showed a comparison of something, then it might be more...
Forum: "The 33"-Road Bike Racing
10-14-17, 10:03 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

So you posted a video to cover what was directly...

So you posted a video to cover what was directly covered?

It is possible that 2 cranksets can have different spindle widths and the same Q, which of course necessitates different arm shape. There...
Forum: "The 33"-Road Bike Racing
10-14-17, 02:35 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

what do you mean "similar"? there is only one set...

what do you mean "similar"? there is only one set of cranks in that video.

are you introducing a new hypothesis that there is something notable about how Q is achieved?
Forum: "The 33"-Road Bike Racing
10-13-17, 08:52 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

stance = Q + spindle + cleat position. Q is...

stance = Q + spindle + cleat position.

Q is a factor of the crank only.
2 pedals can have the same spindle length, but the effective width based on the platform is different.
cleat position is...
Forum: "The 33"-Road Bike Racing
10-12-17, 02:07 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

aside from aesthetics, the flare of crank arms...

aside from aesthetics, the flare of crank arms most often is done so that cranks do not come too close to chain stays.

this usually isn't a problem on road bikes, but bikes with fatter tires (MTB...
Forum: "The 33"-Road Bike Racing
10-12-17, 01:57 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

minor point on nomenclature, but perhaps...

minor point on nomenclature, but perhaps material:

Q-factor applies to cranks, not bottom brackets or pedals. Q is measured as the distance from the outside of one arm @ the pedal to the outside...
Forum: "The 33"-Road Bike Racing
10-11-17, 10:52 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

like many things, some care a great deal, some...

like many things, some care a great deal, some don't care at all.

some people can feel if their saddle is out of position by 2mm and others cannot; which camp does your boy fall in?

unless you...
Forum: "The 33"-Road Bike Racing
10-11-17, 08:47 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

there are a few factors: * the Q-factor of the...

there are a few factors:
* the Q-factor of the crank
* how much and how soon the chain stay flares out
* position of cleats on rider's shoes
* float (more float = more chance of this happening)...
Forum: "The 33"-Road Bike Racing
10-11-17, 08:41 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

you're right in that most of the time one must...

you're right in that most of the time one must switch to a different brand crank to adjust Q *at the crank*, but there have been cases where some cranks were offered in different Q factors.

sram...
Forum: "The 33"-Road Bike Racing
10-11-17, 08:35 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

one could argue whether rings should be included,...

one could argue whether rings should be included, as there are some weight weenie rings that shift poorly under load, but pedals should certainly NOT be included.

you'll rarely find someone doing...
Forum: "The 33"-Road Bike Racing
10-11-17, 08:31 PM
Replies: 5,908
Views: 559,876
Posted By tetonrider

cannondale was great at perpetuating that myth...

cannondale was great at perpetuating that myth that the hollowgram was the lightest crankset, and others repeated that claim without verifying. they often failed to include the required spindle,...
Forum: "The 33"-Road Bike Racing
10-11-17, 12:55 AM
Replies: 5,908
Views: 559,876
Posted By tetonrider

not so sure about a lighter-than-carbon stem or...

not so sure about a lighter-than-carbon stem or post for off-road use. what are you using?

what aluminum cranks -- all-in -- are less than specialized carbon cranks?
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