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Discussion Starter · #1 ·
Hi all.

Let me say a couple of things: 1) I understand that no one here can fit a frame for me, 2) I understand that the ultimate fit test is whether a bike actually feels right while riding, and 3) I should really be taking this up with my LBS.

Still, I'm going to ask ... who's riding what, in terms of height/inseam relative to the Giant TCR frames?

Here's why I ask...

I'm 6' 1.5" tall and have a measured 34.25" inseam (in socks, on a tile floor, with a straight back, measured to a book stuffed almost to the point of discomfort between my legs). If I follow Giant's fitting guide for their compact road frames, I end up on a Medium frame:

Inseam to centimeters: 34.25" x 2.54 = 87.0cm
Inseam to frame size (using Giant's ratio): 87.0cm x 0.65 = 56.5cm

A calculated 56.5cm frame size falls solidly within the 55-59cm spectrum given for Giant's Medium frames.

If I continue with Giant's fitting instructions and do the step for leg extension (87.0cm x 0.883 = 76.8cm), their chart says's I'd use either a #4 or #5 Aero seatpost on a Medium frame ... which is on the longer side of the middle range for those posts, but not the extreme (they run #1-7; #5 is ~350mm).

As far as "fitting by the numbers" goes, Giant's guide would put me on a Medium frame... and not even at the extremes of that size.

Before people start jumping up and down hollering--I've read the threads where everyone who's 6' rides 58-59cm frames--the Medium frame actually makes sense to me: I'm currently riding a 58cm Cannondale and feel very, very stretched-out. I've tried different saddle positions (fore/aft and height), a shorter stem (90mm), different stem heights (from -5deg with no spacers to +5deg with ~3cm spacers), and different bar angles ... I always feel like I'm "behind" the bike, reaching way forward for the brake hoods or drops. About the only place I feel comfortable and really "centered" over/in control of the bike is with my hands on the bar tops and my elbows somewhat bent.

I went to my local Cannondale dealer (not where I bought the bike ... I've moved across the country since then) and was told that a 58cm frame should be about right, that I needed to "learn how to sit on a road bike," and would I "please make an appointment for a $75 bike fitting." I'm not against a professional bike fitting, but I feel like I know enough about bikes to know that there's only so much a person can do with saddle adjustments and stem-swaps. Maybe I'm wrong?

As for learning to sit on a road bike, there may be more to that than I'm willing to admit: I'm returning to cycling after an 8 year hiatus. In my previous life, I road a hardtail C'dale mountain bike, and I went with the smallest frame I could fit, longish stem, and maybe 10" of seatpost sticking out of the (sloping top tube) frame. Granted, I understand that road and mountain bikes are different beasts, but I always felt completely centered on that bike: it was as easy to get my weight forward for climbing as it was to slide it back for descents ... almost unconscious, really. Not so with this 58cm road bike.

So, I'm thinking that a smaller frame with a shorter top tube would alleviate my too-stretched-out feeling. A Medium Giant runs a 55.6cm top tube compared with the 57.5cm tube on the C'dale (the Large Giant jumps to a 58.4 tt).

Does this make sense to anyone else? Are there 6' 1" riders out there on Medium Giant/55cm frames? Or am I just way, way off base in my sense of how I should fit onto a road bike?

Any feedback is appreciated,

--MW
 

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I just got fitted at a Giant dealer, and our measurements are extremely close, at least enough to argue my point.....which is......
I was fitted for a 58cm bike, and a large TCR. You are correct that there is a big jump between M and L TCRs, but there is a bigger issue at hand (in my opinion).
My bone to pick is WTH is a shop doing charging you 75 bones for a fitting? Are they the only gig in town, or in the region, or in the state? Is it not enough that you are about to drop 2K on a bike, not to mention accessories? It only takes 15 minutes to size you. I wish I could make $300/hour doing sizings, I would quit running Microsoft!! (That's a joke) Sounds like this LBS is more interested in their profits than their customers.
I know that most paranoid LBS think that some of us are using their measurements and running to the web/eBay/Colorado Cyclist/insert alternative here, but a good LBS will step up to the plate and engage you about the whole riding experience, and their desire for you to become a customer. It sounds to me that you have a "turn and burn" LBS who doesn't really care about you, your comfort, and your future with return business. I would sincerely make an appointment to sit down with a LBS that cares, get fitted and their input, and be open about your budget and physical/mental constraints (if any).
Fitting is probably the most important aspect of purchasing a bike, and to ask the general roadnuts on this board for input can be relative at best. I am sure you understand that already, so my advice is find a new LBS that cares, and take the time necessary to get fitted correctly. THEN, and only then, upgrade the components which will increase your comfort. To rig out a bike that didn't fit in the first place will decrease the pleasure you get out of the road in a hurry.
Hope this helps, and best of luck.
 

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Xl

Not to confuse you further but I am 6'1" and ride an XL giant with a 100 mm stem. Based on my leg extension, I would use a 3 aero post, exactly the standard for the range. It is definately an aero-stretched out position but I am generally comfortable with it.
 

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I'm 5'9" and ride a medium with a 110 stem. The issue for you may be one you haven't mentioned which is saddle to bar drop. A medium would be too small IMO. I'd definitely get a large.
 

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imbasilical moreon
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OCR maybe ??????

TCR is a really streched out, long TT w/ aggressive saddle to bar drop type of frame ........ you profile indicates rec rider........ 8 yr layoff from road .....

have you considered the OCR Lg frame? ...... you're in that range too ....
might not feel so stratched out .... just a thought.....also, you should post this on Giant forum......... lots of OCR riders your size on the Lg .......

RE: $75 fit analysis...... are they going to credit it back off the purchase price .... if so, not so bad...... maybe they just use it as a way to seperate the wheat from the chaff ...... the buyers from the gawkers ? ......

G'luk, have fun, send pix when you get it !!!
JJ
 

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gastarbeiter
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Well, that's a whole lot of info to digest.

I'm 5'9"/175cm, with a 32" inseam, and i just got a TCR Comp M.

My current bike is an ancient Cannondale 2.8 which is a 54, and the only bike i have ever been properly fitted for (along time ago, and previous to getting the Giant) is a Pinarello 55 c-c.

I had always planned on going Medium, but had some last minute doubts, mainly due to the fact that the friend who turned me on to Giants suddenly thought i should consider going for a Small.

This was because he's just realized that after riding TCR L's for about 4 years, and accumulating about 5-6 of them, that he might not be a L after all, but a M.

Like you, he's 6'1" as well.

A few months ago he had a line on a t-mobile team bike, and the person who was setting the deal up for him - an ex-pro - suggested he get the medium, which he did, and so far he's really happy with it.

So, using the story of my buddy as reference, it doesn't seem to be drastic to go for a Medium. One other thought - what about ML?
 

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Two things

Lost on the Backroads said:
Fitting is probably the most important aspect of purchasing a bike, and to ask the general roadnuts on this board for input can be relative at best. I am sure you understand that already, so my advice is find a new LBS that cares, and take the time necessary to get fitted correctly.
Your own words explain why an experienced fitter will charge high dollar for a proper fit. $75 around here in SoCal would be way cheap, and would make me question the qualifications of the fit specialist. $125 - $250 (full tri fit) is more the range, and a proper fit should be at least an hour-long process. It is no joke to say there are a handful of fitters in the country that make 500K+ per yr just doing fittings and selling the components that go along with the process. People are waiting weeks to get in for fits, and the results can be dramatic for many.

However, you and others are correct. If you're going to purchase a bike from an lbs, the price of the fitting should be rolled over into the bike purchase, and a good lbs would care enough to put you on the appropriate bike, not only for your size, but for your intended use. With that in mind, I'd follow the advice from another poster and take a good look at the OCR series - they're very well designed frames and, despite their appearance in photos, are completely different frames than the TCR's. I agree they're most likely the better bike for you.

Also, the post about Giant's having longer top tubes is correct. Their reach tends to be longer than other frames, so the size that fits you is sometimes surprising. Keep an open mind, but also trust your body. The best bike fitters in the world let you tell them what fits during the process. Lastly, the bike should be made to fit you, never the other way around. If someone tells you to adapt to a certain bike/position - run away from them and take your business elsewhere.

Edit: sorry, I just realized that some of my post is addressing you, while the other is directed at the original poster. my bad.
 

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Discussion Starter · #8 ·
Good feedback, thank you...

All,

Lots of good feedback here, thank you.

I didn't mean to demonize that particular LBS. I'd never been in there before (there are other shops in the area ... I'm still finding "mine"), and they're the closest authorized Cannondale dealer. Because this all started with me questioning the sizing of my (relatively new) C'dale, I figured I should start there. That guy's probably sold a ton of bikes over the years ... so, when I walk into his shop and mention that I'm 6'1"/34" inseam riding a 58cm frame, he's pretty well justified in thinking I'm on the right frame (given his experience and all). Hence, he wanted me to schedule a fitting for my existing frame.

My only irritation was that, you know, I think professional courtesy would have seen me invited to throw a leg over some different sized bikes and take them around the block (or even the wind trainer). Maybe that was an unrealistic expectation, but it's Feb. in upstate NY ... the shop wasn't busy.

Ever notice how bike shops and guitars shops are similar? Some stores, you walk in and immediately feel like you're being sized up (no pun intended); other stores, you walk in and immediately feel like family ... sit down, shoot the breeze, no pressure. Weird.

Anyway...

My interest in the TCR sprung from the idea that I might want a smaller frame. Figured if I was shopping a frame, I should also address my other concern about the Cannondale: standover clearance. Maybe it's my background with hardtail mtn. bikes, but it freaks me out to only have 1.5" of clearance. I know that's not a "fit issue" per se ... it just bugs me. So, I started looking at compact geo. frames.

I will look into the OCR. My only concern--maybe this is a contradiction?--is that I'll find the positing too upright and the geometry too slow. No, I'm not a racer; yes, I'm coming back to the sport after several years. At the same time, I ride a structured schedule with clearly-outlined time/distance/heart goals, I love pushing myself to get faster and more efficient on a bike, and I'm more interested in finding spirited club rides come spring than pretty spins through the country. There wasn't a category for there here at the forums. :)

Thanks to the folks who responded: in the Unix world, we call this a "sanity check," and your feedback is much appreciated.

Out of curiosity, does anyone else thinks it's weird that Giant's published fitting information puts me on a medium frame when the general consensus--for whatever it's worth--puts me on a large?

Thanks again,

--MW
 

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mwnovak, I had the same dilemma as you. Coming from a mountain bike background and liking the compact geometry of the TCR, I had to decide between L or M because there is no M/L for the alloy frames. I'm about 6'2 - 6'3 and ended up getting a L. I hope I didn't make the wrong choice because I do prefer small frames with low top tubes and lots of seatpost extension. Although, considering what the saddle to bar drop would have been on a M, I probably made the correct choice.
 

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Hello, I ride a meduim TCR C2. I'm 5'9" with an iseam of 32, 1/4", with a 100mm stem 6 degree angled down with 2 inches below seat level. I feel very comfortable even on long rides (80 - 120 miles) but some of my fellow cyclists tell me that I'll do better on a small frame with a 120mm stem which would be just the same as I'm now. What they tell me is that with the smaller frame I'll have better handling and less frame weight. Any thoughts on that?
 

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I'm 6' 1/2" with a 33.5 inche inseam "boys to floor" and I'm riding a medium TCR frame. It's all about horizontal top tube length on compact frames which on my bike is 55.5. I use a 110mm stem. Try competitive cyclist' fitting system. It looks like the medium might be a tad small. The M/L might be the ticket.
 
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