I squarely between size small and medium at 5'7" (170cm). Short legs, long torso
Curious if anyone else rides an Open U.P. at my height.
My current gravel rig has slightly more stack and the same reach. What I don't like on my current bike is the lack of seat post showing. Makes for a stiff ride. I also don't have much standover, but need a 100mm stem
I'm not sure I want a frame with less reach (The U.P. Small), but it is only 10mm less reach. Wondering about toe overlap with the front wheel, but the HA is 1˚ slacker.
Thanks to anyone who has experience with this frame
General fitting comments: For a given frame stack height, effective reach shortens as the stem goes up (spacers or rise).
The 29mm difference in stack between the small and medium will shorten the reach a lot if you need to raise the stem much, requiring a long stem, which will affect the handling (which you may or may not like).
As for the seat post extension, how does the UP seat tube length compare to your current frame. There is only a 20mm difference between sizes.
Toe overlap, a 6mm difference in front center should not make much difference.
Thanks for replying. Glad you mentioned stem height because that was a concern I had when I looked at the HT length.
In order of my current Bike, UP(sm), UP (md) ST (Center to Center): 520, 520, 549 TT (Effective): 535, 538, 540 HT: 140, 105, 130 Stack: 557, 522, 551 Reach: 375, 365, 376 HA: 71, 69.5, 71 SA: 74, 72.5, 72.5
While looking good for standover, the stack give me serious pause because of the serious need for spacers.....leading me to consider the Medium and just deal with the reduced standover and stiff as hell seat tube/Seatpost since its even 20mm taller than my existing frame. Damn short legs......
The medium is much closer to your current bike. The Open geo chart shows a 540 ST, C to top Could always get a Red Shift suspension post if is seems harsh
BTW stack is the better measurement than HT length for bar height. Stack is measured from the BB. Frames with different BB drop and the same HT length will have a different stack.
to compare the reach of two bikes, I calculate using the same stack height as the expected final set-up will use. In this case the reach for the U.P./small set-up to the same 575mm stack of your current bike, will/would be ~555mm. -is this correct procedure? (assumes approx, 6mm decrease in reach as stack increases 18-20mm).
Hi VTG, I'm 170cm and a 29" inside leg and ride a small with 11cm stem. Seems to fit me perfect although I'd prefer a shorter stem. There's about 17cm from the clamp to the top of the saddle which looks good.
Packs wrote:Hi VTG, I'm 170cm and a 29" inside leg and ride a small with 11cm stem. Seems to fit me perfect although I'd prefer a shorter stem. There's about 17cm from the clamp to the top of the saddle which looks good.
Thanks...did you need to use a lot of spacers under the stem to get bar height you wanted?
I would definitely get a bike fit done. The U.P. is a great bike, but you don't want to second guess yourself afterward. I had a fit done before getting my upper. I'm 5'9" have a different challenge in longer legs (32" inseam) and shorter torso. Medium was the better fit for me with a 90mm -10° stem. The fit took a little over an hour and I think was ~$100. The OPEN design does have a sloping top tube BTW.
THanks. For this price, I don't disagree, I think a medium would work fine. The specs are almost identical to my current rig. Just a little taller seat tube. Reach and Stack are more or less the same. Stack is even a bit less which I like. I just wanted more seat post than it looks like I would have with an Open or a Hakka.
@VTGraveler I’ve been having the exact same issues. We’re the same height and looking at the same bikes. I road an Open UP size M this weekend. It was set up on 650b Wheels. It was definitely the right size for me. It was also an amazing ride.
TSwan wrote:@VTGraveler I’ve been having the exact same issues. We’re the same height and looking at the same bikes. I road an Open UP size M this weekend. It was set up on 650b Wheels. It was definitely the right size for me. It was also an amazing ride.
Get a fit get a fit before you ride. If you’re not sure about stack/reach pay someone a fee to “jig” the measurements of this bike so you can try it.
you haven’t even mentioned seat tube angle, which causes me big concern. The bike needs to fit the legs before you look at the front end.
Open calls their seat poet angle a 74deg with an asterisk. As someone who has short femurs this slack angle (72?) is concerning. I want to love the Open but suspect it has the same slack post as the 3T Exploro and this is unusable to someone like me who needs a 76deg final saddle position.
Spreader wrote:Get a fit get a fit before you ride. If you’re not sure about stack/reach pay someone a fee to “jig” the measurements of this bike so you can try it.
you haven’t even mentioned seat tube angle, which causes me big concern. The bike needs to fit the legs before you look at the front end.
Open calls their seat poet angle a 74deg with an asterisk. As someone who has short femurs this slack angle (72?) is concerning. I want to love the Open but suspect it has the same slack post as the 3T Exploro and this is unusable to someone like me who needs a 76deg final saddle position.
Interesting. Between the Open and the Ibis Hakka I am struggling with their fit, but as your say...get fit or demo if I can. I am holding off on a purchase for now. My current Chinese rig does well enough and I'm being spoiled thinking I need a new frame. So....,ay next year
