Tri bike fitting question

Oct 12, 21 12:55

Post #1 of 36 (1445 views)

I have decided to bite the bullet and buy a tri bike. I had a fitting done and am trying to find a bike. But I am confused about the reach -

Current bike - reach is 388mm
Tri bike recommended reach - 469mm

That is a difference of about 3". Are the measurements done differently? Are the pads on a tri bike that far forward?

I trust the measurements but it just seems so weird to me the tri bike would seem that much bigger than what I am currently riding.

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 12, 21 12:57

Post #2 of 36 (1444 views)

Is that first number your frame reach, or your actual fit reach?

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Re: Tri bike fitting question [realbdeal] [ In reply to ]

Oct 12, 21 13:00

Post #3 of 36 (1441 views)

realbdeal wrote:

Is that first number your frame reach, or your actual fit reach?

Great question! It's the frame reach, I guess I don't know the exact reach but I know it hasn't been moved forward 3" I have had a shorter stem put during a fit.

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 12, 21 13:14

Post #4 of 36 (1428 views)

What is your current bike?

Re: Tri bike fitting question [jimatbeyond] [ In reply to ]

Oct 12, 21 13:35

Post #5 of 36 (1401 views)

jimatbeyond wrote:

What is your current bike?

Liv Langma Large

Last edited by: gwenevere: Oct 12, 21 13:35

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 12, 21 13:43

Post #6 of 36 (1391 views)

The reach number for your road bike is a measurement on the frame.

The reach number in your tri bike fit is a measurement to the back or middle of the pads.

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 12, 21 14:12

Post #7 of 36 (1372 views)

Can you post an image of your fit data?

Re: Tri bike fitting question [cyclenutnz] [ In reply to ]

Oct 12, 21 14:30

Post #8 of 36 (1353 views)

I hope you can see this.

Last edited by: gwenevere: Oct 12, 21 14:31

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 12, 21 14:54

Post #9 of 36 (1338 views)

That's better
The important number is the Arm Pad Reach BB - 431mm
Which will correspond to a frame reach of 400-430mm

Then Arm Pad Stack BB of 727 means you're looking for a high stack frame, for example

The Shiv is 425, 565 (rim brake version)
Plasma 4 417,560
Argon 18 417,583

Your options for bikes will be a bit limited by the over 700mm of stack.
You can see that the Cervelo PX bikes don't make it to your stack height until the XL size and that is their taller bike

Re: Tri bike fitting question [cyclenutnz] [ In reply to ]

Oct 12, 21 15:01

Post #10 of 36 (1334 views)

cyclenutnz wrote:

Can you post an image of your fit data?

I think an image of the bike fit would be more informative.

Re: Tri bike fitting question [MattyK] [ In reply to ]

Oct 12, 21 15:08

Post #11 of 36 (1328 views)

Based the fit data, yes.
Especially since the Langma can't get Bar Y over 650

Re: Tri bike fitting question [cyclenutnz] [ In reply to ]

Oct 12, 21 17:30

Post #12 of 36 (1288 views)

cyclenutnz wrote:

You can see that the Cervelo PX bikes don't make it to your stack height until the XL size and that is their taller bike

That is interesting because the P series are on my list and I am currently looking at a used P3...

Re: Tri bike fitting question [MattyK] [ In reply to ]

Oct 12, 21 17:35

Post #13 of 36 (1281 views)

Well try as I might I cannot get the pics to upload to the post...

Last edited by: gwenevere: Oct 12, 21 17:43

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 12, 21 17:50

Post #14 of 36 (1271 views)

upload to imgbb and copy the link into your post.

Re: Tri bike fitting question [MattyK] [ In reply to ]

Oct 12, 21 17:53

Post #15 of 36 (1268 views)

https://ibb.co/Ld2NvZh

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 12, 21 18:00

Post #16 of 36 (1260 views)

gwenevere wrote:

https://ibb.co/Ld2NvZh

great, then use the Embed codes:

[url=https://imgbb.com/]

[/url]

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 13, 21 9:55

Post #17 of 36 (1181 views)

It appears that you aren't sitting on that saddle properly.

Did your fitter talk to you about that?

Re: Tri bike fitting question [jimatbeyond] [ In reply to ]

Oct 13, 21 10:11

Post #18 of 36 (1168 views)

jimatbeyond wrote:

It appears that you aren't sitting on that saddle properly.

Did your fitter talk to you about that?

We did talk about sitting on the saddle but I thought these pictures were taken at the end of the session.

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 13, 21 10:33

Post #19 of 36 (1160 views)

What did the fitter say about how to sit on that saddle?

Re: Tri bike fitting question [jimatbeyond] [ In reply to ]

Oct 13, 21 10:45

Post #20 of 36 (1148 views)

jimatbeyond wrote:

What did the fitter say about how to sit on that saddle?

The notes say "good bike posture starts with a forward pelvic rotation. Pelvis is rotated onto the pelvic bones with the pelvic bones resting on the saddle rails"

Re: Tri bike fitting question [jimatbeyond] [ In reply to ]

Oct 13, 21 10:57

Post #21 of 36 (1137 views)

jimatbeyond wrote:

What did the fitter say about how to sit on that saddle?

why do fitters tilt arms up like that?

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Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 13, 21 11:01

Post #22 of 36 (1134 views)

gwenevere wrote:

I have decided to bite the bullet and buy a tri bike. I had a fitting done and am trying to find a bike. But I am confused about the reach -

Current bike - reach is 388mm
Tri bike recommended reach - 469mm

That is a difference of about 3". Are the measurements done differently? Are the pads on a tri bike that far forward?

I trust the measurements but it just seems so weird to me the tri bike would seem that much bigger than what I am currently riding.

check my reply to you on the Cervelo thread. I edited my post to factor in that your reach was to mid-pad, not to back of pad. Still an XL in the PX, probably a 58cm in the P-Series.

Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

Re: Tri bike fitting question [ericMPro] [ In reply to ]

Oct 13, 21 11:04

Post #23 of 36 (1131 views)

ericMPro wrote:

gwenevere wrote:

I have decided to bite the bullet and buy a tri bike. I had a fitting done and am trying to find a bike. But I am confused about the reach -

Current bike - reach is 388mm
Tri bike recommended reach - 469mm

That is a difference of about 3". Are the measurements done differently? Are the pads on a tri bike that far forward?

I trust the measurements but it just seems so weird to me the tri bike would seem that much bigger than what I am currently riding.

check my reply to you on the Cervelo thread. I edited my post to factor in that your reach was to mid-pad, not to back of pad. Still an XL in the PX, probably a 58cm in the P-Series.

I saw your reply. I am tall (5'10") but cannot even get on my friend's 58.

Re: Tri bike fitting question [gwenevere] [ In reply to ]

Oct 13, 21 11:09

Post #24 of 36 (1122 views)

gwenevere wrote:

ericMPro wrote:

gwenevere wrote:

I have decided to bite the bullet and buy a tri bike. I had a fitting done and am trying to find a bike. But I am confused about the reach -

Current bike - reach is 388mm
Tri bike recommended reach - 469mm

That is a difference of about 3". Are the measurements done differently? Are the pads on a tri bike that far forward?

I trust the measurements but it just seems so weird to me the tri bike would seem that much bigger than what I am currently riding.

check my reply to you on the Cervelo thread. I edited my post to factor in that your reach was to mid-pad, not to back of pad. Still an XL in the PX, probably a 58cm in the P-Series.

I saw your reply. I am tall (5'10") but cannot even get on my friend's 58.

why not?

E

Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

Re: Tri bike fitting question [ericMPro] [ In reply to ]

Oct 13, 21 11:22

Post #25 of 36 (1110 views)

ericMPro wrote:

gwenevere wrote:

ericMPro wrote:

gwenevere wrote:

I have decided to bite the bullet and buy a tri bike. I had a fitting done and am trying to find a bike. But I am confused about the reach -

Current bike - reach is 388mm
Tri bike recommended reach - 469mm

That is a difference of about 3". Are the measurements done differently? Are the pads on a tri bike that far forward?

I trust the measurements but it just seems so weird to me the tri bike would seem that much bigger than what I am currently riding.

check my reply to you on the Cervelo thread. I edited my post to factor in that your reach was to mid-pad, not to back of pad. Still an XL in the PX, probably a 58cm in the P-Series.

I saw your reply. I am tall (5'10") but cannot even get on my friend's 58.

why not?

E

The one time I tried I couldn't reach! Maybe it was her 61 but I am pretty confident it was the 58. I am riding a 54 now, used to ride a 56. The 56 was comfortable but the 54 is moreso. That is something I am so confused about. Pretty much everyone I talk to says their tri bike is smaller than their road and I am looking at bikes that are bigger than what I am riding now. But I have to trust the experts on this one.

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