The slacker STA dovetails with the taller headtubes on Riv bikes, so really the typical cycling body position is preserved but kind of rotated slightly back around the BB, and you still have a totally natural position for pedaling, but with the added benefit that your neck is not kinked if you want to take in the scenery as you ride by. It's really an old-school geometry. If you look at bikes from the early 20th century, even racing bikes, they had slack angles and bars at saddle height or above. I have a 1969 raleigh that has that old geometry, and it rides almost exactly like a riv, though the BB is a bit higher and the build quality is not as great though nottingham raleighs are known for sloppy construction. I also have a mid eighties specialized with a 74 deg. seat tube, and riding it, especially after not having ridden it for a while, definitely feels like you are more perched up on a high wire or something like that. It's noticeable. Not uncomfortable, since the way I ride it I still have the bars up within 2cm of the saddle, but just different and not as relaxed feeling.
On Sunday, January 17, 2016 at 3:32:54 PM UTC-5, John Hawrylak wrote: > > Hi > About 20 days ago, you replied to my question concerning relaxed STAs on > Rivendells. You said you can definitely feel the relaxed STA. > Can you described what you feel in a little more detail???? > I'm looking at an Ocean Air Rambler 650B low trail frame/fork, and it has > a 72degree STA and 72.5 HTA, STA same as a AHH and very similar to other > Rivendells. The Rambler is more relaxed than other 650B frames out there > and RBWs are more relaxed than other normal trial frames also. > My existing frames have 73.5 and 74 degrees STA, so I am not as far back > as I would be on a Rambler or a RBW. I also have the bars at the saddle > height (Nitto Technomic used), which is the typical RBW location (at or > above). While the RBWs are not low trial, I feel the relaxed rear > geometry effects are more or less the same regardless of trial. > So I'm trying to understand if you see the relaxed rear geometry effect as > a small, medium, or large effect and what does it feel like. > John Hawrylak > Woodstown NJ > > > On 12/29/15, Utah<[email protected] <javascript:>> wrote: > > The slack seat tube works together with the slack headtube which you can > definitely feel! > > > > On Wednesday, December 23, 2015 at 5:32:11 PM UTC-7, John Hawrylak wrote: >> >> A relaxed rear geometry seems 1 major feature of all Rivendells (except >> the Roadeo), i.e s*lacker Seat Tube Angles (STA)are used compared to >> other frames*, whether large or small builder. The STA angles of the >> small to medium frames vary from 71.5 deg (Sam, Joe A, San Macro) to 72.5 >> deg (AHH, Atlantis, Ram) which are less than: >> >> - Small 27"/700C frames which typically have steeper STA, 73 to 74 >> deg, to avoid toe clip overlap. The exception being a long top tube, >> requiring shorter stems to maintain reach within limits >> - Larger frames even are less than 73 deg, a typical British STA. >> >> The slacker STA puts you further back, 6 to 18mm, depending on the STA >> compared to 73deg STA. >> >> My questions to the group >> >> 1. Is the relaxed rear geometry something you can feel when compared to >> other frames?? >> >> 2. Do you see it as a positive?? >> >> The relaxed rear seems to go together with the higher head tube, bars up >> to saddle height and further back, which also seem to differentiate >> Rivendell, assuming lugs & great paint jobs don't affect the ride. >> >> John Hawrylak >> Woodstown NJ >> >> >> >> >> > -- > You received this message because you are subscribed to a topic in the > Google Groups "RBW Owners Bunch" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/rbw-owners-bunch/j0vrJR2W_78/unsubscribe > . > To unsubscribe from this group and all its topics, send an email to > [email protected] <javascript:>. > To post to this group, send email to [email protected] > <javascript:>. > Visit this group at https://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- 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 post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
