When comparing reaches though you must know the seat and head tube angles of each bike in question as that can greatly affect the saddle to bar reach depending on how many degrees difference. Say one bike has a 72d STA and the other 73d. If you were not aware of that and positioned the saddle using the same post @ the same spot on the rails, your reach estimates will be off as one will be further back of the center of the BB, and that would make the effective reach greater than the 73d frame. This is given the same HTA and relative height of the center-heat tube. If those are different also, that's more to calculate. BB heights also drastically change the way you may even want to position yourself in the first place. I know all of this from experience in trying get my custom Franklin road frame and the Bombadil relatively the same in reach and bar height. So far it hasn't worked out as hoped not from miscalculations, but I'm at the limits of what parts are available to get it there(longer and low) and how much I'd have to spend as I can't change the dimensions of the frame ! Still, the way they feel in being propelled and handle is inherently so starkly different even if I could get the reach and height relatively the same, the way I pedal and steer them is going to feel inherently different. They're just so differently designed frames. I'm not saying yours are or are not as I have no clue !
You should have an easier time as your reach issue is from reach being too long and 50-60mm stems with rising angles are plenty. But you must remember that say a 50mm stem with a +35d rise isn't going to rise all that much in usable height. I know you know the link ! http://yojimg.net/bike/web_tools/stem.php Monocogs according to https://www.vitalmtb.com/product/guide/Bikes,3/Redline/Monocog-29er,4403 had 73d STA and 72d HTA with a TT of 60.3 on a 17" frame. I assume that is the medium as other years of that frame called the 17" a medium. (@ sizes and geometry look for the green "view geometry" link to the right). On Thursday, October 24, 2024 at 6:02:31 PM UTC-4 Elisabeth Sherwood wrote: > Ritchey has @ $50 stems with 30-degree rises: > > https://ritcheylogic.com/bike/stems/comp-4-axis-30d-stem > > (Not available, apparently, from Ritchey directly, but someone should have > them in the shorter lengths...) > > (Note that short-length stems don't actually rise very much, regardless of > the angle of the rise!) > > Cheers! > > Liz > Washington, DC > > > > On Thursday, October 24, 2024 at 4:34:21 PM UTC-4 Patrick Moore wrote: > >> This list ought to know about this question. >> >> I hope to install Maes Parallels when I rebuild the Medium 2012 Monocog >> and since the effective tt is 59.5 cm* compared to the 56.5 or 57 where I >> usually install such a bar I’ll need a stem that is both 25 or 30 mm >> shorter than the 80s I use on my road bike and that also gets the bar clamp >> at least level with saddle (don’t know needed height above spacers since I >> don’t yet have the saddle installed, but this suffices for the general >> question). >> >> Question: Where can I find threadless stems with 5 cm extensions and a 30 >> or 35* rise that don’t cost custom prices? a 6 cm ought to work since I >> will have the bar level with saddle instead of ~3 cm below. >> >> This looks promising at $75 but even that is high for a throwaway beater: >> https://analogcycles.com/products/gnomehopper-60mm-stem >> >> Second question: Are adjustable stems sturdy enough for long-term use? >> >> Thanks. >> >> *I could only find the spec for the 2015 Monocog 29er aluminum but this >> fits with my own admittedly slapdash measurements. If anyone can correct >> me, please do so. >> >> I will have fun with this build. I think of ultralight 60 mm Big Ones and >> the long unused S3X with 17 t cog and if I can make it work a cosmetically >> marred Dura Ace GA 200 crank with 42 t ring for ~ 72, 54, and 45 inch gears >> or perhaps an 18 for 68, 51, 43. Time will tell. >> >> -- >> >> Patrick Moore >> Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum >> >> ------------------------------------------------------------------------------------------------------- >> >> Executive resumes, LinkedIn profiles, bios, letters, and other writing >> services >> >> >> ------------------------------------------------------------------------------------------------------- >> >> *When thou didst not, savage, k**now thine own meaning,* >> >> *But wouldst gabble like a** thing most brutish,* >> >> *I endowed thy purposes w**ith words that made them known.* >> > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/f6195333-a653-4a04-8f5e-1d82b672ac3fn%40googlegroups.com.
