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PostPosted: Mon Oct 30, 2017 7:19 pm 
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Has anyone seen one of these before? I must admit they look pretty good. The sizing/geo of the bike is a little crazy though? A large lines up with a 52cm Caad almost. The HT is stupid short on these

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Image

This Reynolds 725 frame looks nice too

https://www.ebay.com/itm/SEABORAD-Reyno ... SwldRZ9IXl


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PostPosted: Mon Oct 30, 2017 10:50 pm 
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There was a bit of discussion about this frame in here
viewtopic.php?f=3&t=113717&start=2580#p1314770

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Posted: Mon Oct 30, 2017 10:50 pm 


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PostPosted: Tue Oct 31, 2017 3:31 pm 
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Do you understand the frame comparison? It seems like the geo of this bike is actually bigger than it appears? minus the small HT?


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PostPosted: Tue Oct 31, 2017 5:09 pm 
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For that price it looks like it's worth a punt! Just don't like the oversize seat collar. Geo looks ok, long and low.


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PostPosted: Tue Oct 31, 2017 5:22 pm 
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lone wheeler wrote:
For that price it looks like it's worth a punt! Just don't like the oversize seat collar. Geo looks ok, long and low.



Does the Large line up with say a 52CM CAAD or FM066? Or am I missing something here?

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PostPosted: Tue Oct 31, 2017 8:05 pm 
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Your first geometry table is not the same as is posted for the Steel Frame in question, according to the eBay links in both this and the other thread.

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PostPosted: Tue Oct 31, 2017 11:30 pm 
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The geo of the large (535 tt) is in the ballpark of a 56 caad or similar L bike, as mentioned in the FM66 thread. See the bike geometry chart on the next page. I think the short TT lengths are due to the extremely short headtube + steep seat tube, hence reach is ballpark large sizing.




I noticed the other day an ebay aluminium frame with the same geometry as these steel frames - "marechal soul road bike"

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PostPosted: Wed Nov 01, 2017 4:05 pm 
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silvalis wrote:
The geo of the large (535 tt) is in the ballpark of a 56 caad or similar L bike, as mentioned in the FM66 thread. See the bike geometry chart on the next page. I think the short TT lengths are due to the extremely short headtube + steep seat tube, hence reach is ballpark large sizing.




I noticed the other day an ebay aluminium frame with the same geometry as these steel frames - "marechal soul road bike"



Thanks, so what you are saying is due to the Seatube and Heattube angle, the reach is actually a lot longer than what is traditional with an effective TT of that size?


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PostPosted: Sat Nov 04, 2017 3:27 am 
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Got curious again and plugged numbers into an online geo calc.
Note: I guesstimated the fork length. Ebay listing has dropout-brake bolt 352mm, so i guesstimated 363mm

In short, it's extremely long and low.
393/512mm reach/stack

Stick a crapload of spacers on and the large 535mm tt is ballpark medium 54cm.


Attachment:
am6200.jpg
am6200.jpg [ 2.63 KiB | Viewed 952 times ]

Pic 1:
red: clr5200
green caad12 56
blue caad12 54


Attachment:
clr6200.JPG
clr6200.JPG [ 9.35 KiB | Viewed 952 times ]

Pic2:
red: clr5200
green is a 54 R3
blue caad12 54

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PostPosted: Sat Nov 04, 2017 4:45 am 
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I don't understand why everyone just doesn't list stack/reach. Aren't they essentially the only measurements that determine fit?


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PostPosted: Sat Nov 04, 2017 4:57 am 
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ddsg wrote:
I don't understand why everyone just doesn't list stack/reach. Aren't they essentially the only measurements that determine fit?


most places do now.
reach, stack and seatpost angle.

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PostPosted: Sat Nov 04, 2017 5:26 am 
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head tube angle is also needed to determine the effective stem angle (e.g. a 71.5 vs a 73 degree head angle results in a ~3-5mm difference in handlebar stack and reach).

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PostPosted: Sat Nov 04, 2017 6:45 am 
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thanks, still have no idea what size i am if I bought this bike lol


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PostPosted: Tue Nov 07, 2017 3:57 am 
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I'd say silvalis is spot on, the large is similar to a 56 CAAD based on reach. The stack is much lower so it could have been designed for a +17 stem, or for people with really long torso and short legs. I'd suggest the small and medium frames would both be close to a 54/55 in terms of reach.

Another explanation is that they could be trying to save material (by using shorter tubes and steeper angles) to make the frames cheaper... Or they could just have no idea and those angles/lengths were what was available at the factory...

EDIT: I didn't see the second geometry chart, the above is based on the first geometry chart in the OP.

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My SwiftCarbon Ultravox

My Velocite Selene

Disclosure: I'm sponsored by Velocite, but I do give my honest opinion about them (I'm endorsed to race their bikes, not say nice things about them)


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PostPosted: Tue Nov 07, 2017 4:26 am 
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After I did that second compare I didnt know what to think. You could have nailed it with the +17 stem...

Interesting, as I've spotted at least 4 different (3 steel, 1 alu) ebay frames with the same geometry so far (535tt, 74.5-75deg sta and 71.5hta, etc)

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Posted: Tue Nov 07, 2017 4:26 am 


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