Chinertown

Chinese Carbon MTB => 29er => Topic started by: gleini on January 06, 2015, 12:22:37 AM

Title: What framesize?
Post by: gleini on January 06, 2015, 12:22:37 AM
I can´t find a table anywhere over framesizes on the chinerframes. I´m 175cm tall. What framesize would fit me? 17" or 19"?
Title: Re: What framesize?
Post by: MTB2223 on January 06, 2015, 02:08:29 AM
http://chinertown.com/index.php/topic,96.0.html . Not only how tall your are is important, also the leg length.

Please take a look at the Bicycle Frame Size Calculator, http://www.ebicycles.com/bicycle-tools/frame-sizer

But the length of the top tube is important and different on every model and frame sizes.
Title: Re: What framesize?
Post by: Cnasta on January 06, 2015, 03:09:22 AM
I would say 17" (unless your legs are strangly long :) )
Title: Re: What framesize?
Post by: gleini on January 06, 2015, 05:47:50 AM
My legs har approx 85cm. Different calculators give me different answers. The one linked here said 19". But I think its better with a smaller frame than a frame that feels a little too big.
Title: Re: What framesize?
Post by: Patrick C. on January 06, 2015, 07:21:32 AM
I'd also vote for 17.  I'm 178 cm with around an 82 cm inseam, so slightly taller but with slightly shorter legs.  I have a 17.5" IP-057 with a 70 mm stem and it fits well- I've certainly never thought it was cramped or too small for me.  The standover for the Chiner hardtails is quite a bit higher than my old 26er- with my Chiner I only have a 2-3 cm clearance standing on flat ground, compared to 6-8 on my old 26er.
Title: Re: What framesize?
Post by: Cnasta on January 06, 2015, 08:47:18 AM
I'm 178, but with short legs (inseam around 81-82cm). I orderded a 17,5" frame in december (waiting for delivery).

85cm would make a 19" possible I guess, but I think a smaller frame is preferable over a bigger frame (when in between sizes).

You could of course ask around to see if someone has a 17,5" or 19" frame you could try :)
Title: Re: What framesize?
Post by: gleini on January 06, 2015, 10:08:10 AM
Thanks for the answers. I just needed to clarify my thoughts. I think I will go for a 17" frame.
Title: Re: What framesize?
Post by: Vipassana on January 06, 2015, 01:02:59 PM
I would got with the 17 or 17.5".  I think I'm just pushing the lower limit of the 19" IP-256 and I am ~178cm tall with ~84cm true inseam (measured in bike shorts, not pant inseam).  The bike fits well with a shorter stem (80mm), but I would like some additional stand over height.  An 80mm suspension fork or my ~85mm rigid equivalent would make it perfect for my stand over.

For you, it appears that you have longer legs for your height.  I would expect you to have a high seat position, but a relatively short reach, though perhaps you have longer arms.  I would expect you to have an 80-90mm stem as well.

Title: Re: What framesize?
Post by: JohnnyNT on January 06, 2015, 01:16:11 PM
Try the spreadsheet, works like a charm: http://weightweenies.starbike.com/forum/viewtopic.php?f=8&t=51071
Title: Re: What framesize?
Post by: carbonazza on January 06, 2015, 02:43:24 PM
Try the spreadsheet, works like a charm: http://weightweenies.starbike.com/forum/viewtopic.php?f=8&t=51071

wow... this spreadsheet is spot on with my bike and size.
In addition, it gives road bike sizes, and some other bike related data too.
Title: Re: What framesize?
Post by: brmeyer135 on January 07, 2015, 05:23:08 AM
Somebody mentioned that you might have to have a 90mm stem - at that point or 100mm, I would look at the next frame size up.
The popular set up these days is a short stem with wide bars.
Granted, this is only one thing in many to look at.
Title: Re: What framesize?
Post by: Cnasta on January 07, 2015, 05:32:49 AM
Try the spreadsheet, works like a charm: http://weightweenies.starbike.com/forum/viewtopic.php?f=8&t=51071

That is quite helpfull. Thanks!

However, I disagree with the heartrate part of the sheet. It's not possible to make general assumptions on that topic. It's better to have it sorted out by a qualified doctor, or figure it out by yourself (heartbeat monitor and some experience will make a better sheet :)
Title: Re: What framesize?
Post by: JohnnyNT on January 07, 2015, 06:26:01 AM
I agree with heart rate, 220-age is the crudest approximation. Still, for the bike fitting part it's very good.
Title: Re: What framesize?
Post by: gleini on January 10, 2015, 09:17:56 AM
The link does not work anymore.

I´m also afraid of having a too big frame that will make the bicycle feel big and have a bad propeties.
Title: Re: What framesize?
Post by: JohnnyNT on January 10, 2015, 11:17:35 AM
Weird, link works for me normally.
Title: Re: What framesize?
Post by: gleini on January 10, 2015, 04:29:20 PM
Took the time to get some accurate measurements of my body today. And it seems like I need a 19" frame.

Your Measurements (in cm)
Inseam:87
Trunk:65
Forearm:35
Arm:69
Thigh:60
Lower Leg:57
Sternal Notch: 145
Total Body Height: 176
Title: Re: What framesize?
Post by: turboenterprise on January 10, 2015, 04:33:01 PM
http://www.competitivecyclist.com/

here is a website as well...
Title: Re: What framesize?
Post by: Carbon_Dude on January 11, 2015, 10:50:48 AM
Here is more food for thought when determining your frame size.  Setting the proper seat height from Bike Radar:

http://www.bikeradar.com/gear/article/how-to-get-your-seat-height-right-14608/ (http://www.bikeradar.com/gear/article/how-to-get-your-seat-height-right-14608/)
Title: Re: What framesize?
Post by: JohnnyNT on January 22, 2015, 07:48:58 AM
Try the spreadsheet, works like a charm: http://weightweenies.starbike.com/forum/viewtopic.php?f=8&t=51071

Since the spreadsheet I cited before is great if you already own a bike, but has little value if you are looking for one, I made an additional file. You insert the frame dimensions given by manufacturer (red) and adjust stem, saddle, spacers (yellow) so that you get green values as close as possible to the ones proposed by Biomech spreadsheet (cited one).

Hope it helps: https://www.dropbox.com/s/clwicdvvokd1xg6/Bikegeofit.xlsx?dl=0


Edit: Updated to take into account forks of different rake and length from the one specified by frame manufacturer and their influence on the angles.