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
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:
-- 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 slacker 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 group1. 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 HawrylakWoodstown NJ
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