K2 / Proflex Riders Group

General => Tech Forum => Topic started by: Akagi on March 20, 2006, 09:52:52 am

Title: Proflex X57 frame sizing question.
Post by: Akagi on March 20, 2006, 09:52:52 am

I want to buy a proflex 757, the seller does not know what "size" it is.

This is what I know:  "The frame measures 20" from center of foot pegs to top of seat tube".

Is this a medium sized frame?  That is my guess anyways.   I am about 5"8.  Think it would fit me?

Thanks for your input in advance.

Title: Re: Proflex X57 frame sizing question.
Post by: Simon on March 20, 2006, 09:58:53 am

That measures the same as a medium frame (18")
should fit you fine.
my wife rides a 856 18" frame and she's 5' 5"

Simon.

Title: Re: Proflex X57 frame sizing question.
Post by: orange on March 20, 2006, 05:49:41 pm

I thought most proflexes were similar top to bottom (allowing length of seatpost to determine saddle height), but it was the length of the top tube that counted to allow for longer limbed bikers?

Title: Re: Proflex X57 frame sizing question.
Post by: kiwi on March 20, 2006, 09:37:43 pm

98 2000 and 3000 geometry

size	top tube	chainstay	wheelbase	headtube	ctr BB to cter top tube	standover	btm brkt height	fork rake	Head Tube Angle	Seat Tube Angle
small 14	537	430	1043	120	482	701	304	44	71.6	75.6
medium 16	562	431	1050	120	510	750	302	44	71.4	74.4
large 18	587	432	1060	120	510	752	302	44	71.4	74.4
way big 20	615	434	1117	160	545	781	298	44	71.1	74.1

Title: Re: Proflex X57 frame sizing question.
Post by: Akagi on March 20, 2006, 11:37:50 pm

wow. ok thanks.

does this look like a medium or large to you guys: (http://i5.ebayimg.com/03/i/06/5b/9e/2c_1.JPG)

Asked the seller to measure, but he is really slow at responding.

Title: Re: Proflex X57 frame sizing question.
Post by: Simon on March 21, 2006, 05:10:59 am

Looks large 18" to me.
I always confuse 18" as medium (which I consider as normal sizing).

Simon.

Title: Re: Proflex X57 frame sizing question.
Post by: kiwi on March 21, 2006, 08:27:12 pm

check the wheelbase....axle to axle.Each model has quite discrete measurements not much room for interpretation large 18 will measure 1060 mm 1060/25.4 inches

Title: Re: Proflex X57 frame sizing question.
Post by: whisperdancer on March 21, 2006, 10:36:07 pm

Well, if it has 20" from center of foot pegs to top of seat tube, it is a large size.
That's what my large 97 Animal frame measures...

Title: Re: Proflex X57 frame sizing question.
Post by: whisperdancer on March 21, 2006, 10:37:05 pm

Well, if it has 20" from center of foot pegs to top of seat tube, it is a large size.
That's what my large 97 Animal frame measures...

Title: Re: Proflex X57 frame sizing question.
Post by: Akagi on March 21, 2006, 11:27:45 pm

Thanks guys.  I ended up buying a medium 757, it is supposedly in decent shape.  Will to see I guess.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7226936696&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

Title: Re: Proflex X57 frame sizing question.
Post by: shovelon on March 22, 2006, 06:45:52 am

Akagi, you got a good bargain for your 757!

Happy trails,
Terry

Title: Re: Proflex X57 frame sizing question.
Post by: willem on March 23, 2006, 08:24:07 am

I think you got a great deal on this one. Congrats!

Sizewise... you may be knockin' your knees on the handlebars in turns.
Looks like it has a nice long stem, so that should help.

Strangely, I'm only 5' 9" and really prefer my WayBig 856 over my Big one. Either way, it's a fine ride so enjoy!

Will

Title: Re: Proflex X57 frame sizing question.
Post by: Matno on March 25, 2006, 02:33:58 pm

Quote

Strangely, I'm only 5' 9" and really prefer my WayBig 856 over my Big one.

That IS strange... ;)

$270 would be a good deal for a crappy hardtail frame with those components. You got a steal. Enjoy!