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Twitchy sloping tt frames...why?(9 posts)

Twitchy sloping tt frames...why?Woof the dog
Jul 20, 2002 6:53 AM
I thought any sloping frame would only differ just in that - the top tube would slope down. Experience of quite a few people was that the frames are really twitchy/not very good for descending, feel unstable, etc.

My guess is that there is something wrong with the headtube angle or rake. Also the distance between the bars and the wheel seems longer (or maybe riders are just tall) and the bars extend forward more. The thing is, all these riders've done was swap the frames+forks, so stem length is the same as on the original bike. I would never ever buy a sloping tt. frame. They look really ugly and apparently handle like shit.


Woof the dog.
Real reason for your rant isjSheufelt
Jul 20, 2002 10:11 AM
in the last sentence, you think they're ugly. I bought a Giant TCR earlier this year to race on, and it's more stable and just as comfortable as my former bike, a steel bike from a small builder with a wound up fork. A friend who uses a waterford for long rides and a Giant for races/time trials recommended I try it when I was looking at bikes. He did so because he was impressed with the ride and handling of the Giant. Of course he was only comparing it to a waterford, which everyone knows are poor handling, uncomfortable bikes.
re: Twitchy sloping tt frames...why?legs
Jul 20, 2002 12:01 PM
I am just back from an 80 mile training ride with my team.. around 5 or 6 k of climbs and descents.. on a compact frame...
and gosh it handled great.. pick a line and it rips it...
quick front end .. but also stable...
i guess it's just subjective...
but it does not "handle like shit."
(wish i could agree but i find these kinds of generalizations to be a little simpleminded)....

these bikes feel like any other bike in the saddle.. some of them have interesting characteristics out of the saddle... low COG or whatever it is..they feel like they shed weight out of the saddle..(at least mine does)
its hard to explain.. but i dont think i will ever go back to standard...
so put that in your dogbowl...
Jul 20, 2002 1:13 PM
I think they simply go against the grain of conventional roadie wisdom: just a few frame sizes (sm, med, lg, maybe xl) like a mtn bike and they LOOK like mtn bike frames. The rest of the sizing is done with the seatpost and bars- but if you think about it, the identical geometry for the rider remains if it is properly fitted.

I personally don't like the way they look... but I initially thought a quill stem looked much "sleeker" than what we have now, and how many people now find a quill looking "modern?" For all we know, in five to ten years, all traditional geometry bikes will look retro.
re: Twitchy sloping tt frames...why?aliensporebomb
Jul 20, 2002 8:34 PM
I think my Giant TCR2 looks and handles great. No problems with twitchyness,
it tracks like a laser and is speedy and yet stable to boot. And looks swoopy and
aggressive and I love it.

re: Twitchy sloping tt frames...why?Woof the dog
Jul 20, 2002 9:42 PM
Looks is at the bottom of the list, but there has to be a reason why three people who I know (do I have to name them?) got rid of their sloping specialized, orbeas and shwinns. Those bikes became time trial bikes or went to ebay. Riders described their front end as unstable and twitchy. These riders did not feel 100% sure in handling the bike around the turns, sprinting and high speed descends. Keep in mind these are real riders who don't have time to sit around and post on the internet. They are not concerned with equipment as much as all of you here, they are concerned with their training schedule. What part of the original message don't you get? Didn't anyone here look into sloping tt frame geometries from different companies, compared them, looked at different fork rakes, head tube length, etc.? Or is this a site full of flamers who can only add that they love how their top tube slopes down?

Personally, I don't see that many sloping tt frames, and don't expect to see too many of them in the future. Must have something to do with people not liking them, eh?

Add something thats worth reading!

Woof, the dog.
re: Twitchy sloping tt frames...why?legs
Jul 20, 2002 10:28 PM
and i hear that all red bikes are slow because i have a friend that has a red bike and he says its too slow..

this is your reasoning...??????
your methodology is idiotic...

and dont make assumption about me as a rider until you are racing/riding with me because you have no idea who you are talking to..

you are making my point with your every retort...
re: Twitchy sloping tt frames...why?Woof the dog
Jul 21, 2002 10:03 PM
I know that your post is flame bait, but ...Pecos
Jul 21, 2002 3:03 PM
bikes sloping frame geometry have been winning quite a few major races lately.