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Can someone please help me on understanding the geo on the 2018 reign?
In particular I've become confused over the seat angle. If you look on the Giant website it states the seat angle on the Reign Advanced 0 2018 to be 73 degrees. So this is not super steep, but not super slack, as far as I can tell.
I bought mbr recently where they carry out a review of the same bike. What's confused me is that they've stated the seat angle to be 67.6 which is stupidly slack, and therefore would rule it out for me.
Have they got that wrong, or perhaps do they measure it some alternative way that I'm not aware of?
Cheers
Have mbr measured actual seat angle or effective? That could explain it
I have found the MBR seat angle measurements always seem to be a lot slacker so I thought the same, they measure the actual instead of the effective.
The seat tube is steep up until just after the rocker pivot, where is lays back. I can only assume they measured that.
I liked my 2015 Reign. Prefer the Whyte T130 and Bird Aeris that replaced it.
Thank you....so what is effective seat angle then? Is that something like a seat angle that changes with the sag of the suspension?
Actual seat tube angle is the angle the post comes out of the seat tube. Effective seat angle is the angle of a line drawn between the bottom bracket and the top of the seat post, with the seat post raised so its top is level with the top of the head tube.
So on a hardtail with a straight seat tube they’re one and the same. With most full-sus bikes the seat tube is bent and/or offset forwards of the bottom bracket. If your pedalling height is higher than the top of the head tube then the perceived seat tube angle will be slacker than the effective, and the slacker the actual seat tube angle, the slacker it will get as you raise the post more and more.
Lots of bikes quote a 74-75 deg effective seat tube angle but at pedalling height if you’re long-legged they’re quite a bit slacker. 65-70 deg actual seems quite common.
I have the current copy of MBR here and they’ve quoted effective angles for the 29ers but actual for the 27.5 and plus bikes!
@chiefgrooveguru - Is effective seat angle always measured at stack height (which I think is what you are saying)? I know reach is but am never sure where the effective seat angle is supposed to be measured. If it is then that's a bit daft as nobody rides with their saddle that low. It would also mean that all these modern bikes with their steep seat angles (to aid climbing) actually have slacker seat angles (at ride height) than the older bikes !
Thanks chiefgrooveguru - in which case, for me as I'm fairly tall, it sounds like it may be an issue.
A bit frustrating when you're buying over the web without trying first, it becomes a bit of a punt
It is shown in Giant's diagram below
If you look at the Reign the seat angle will decrease markedly due to the kink, as the actual angle of the final section of the seat tube is much slacker than the over all effective angle. This will then be exaggerated by saddle height.
Often the seat tube kink or setting the base of the seat forwards is to gain a better chainstay length and accommodate the suspension travel.
Some manufacturers give both static and sagged geo figures, which helps somewhat.
That figure suggests (to me at least) that they've measures effective seat angle at the top of the seat tube, so even lower than the stack height.
It does make a bit of a mockery of all these reviews talking about the steeper seat angles improving climbing performance if they are actually slacker (at ride height) than the older bikes.
Thanks all
Does anyone know where I can try one of these please? e.g. to hire it. I definitely need to see how it climbs, hopefully in theory should be no worse than my current Bike.
The trouble is im only interested in the Advanced 0 2018 in L, and I know for a fact there's one left in the country, and the shop won't let me try it before buying.
Therefore I figure the best bet would be to hire any Reign in large. I can't find any bike park etc that hires them. Does anyone know of one please?
How does the Reign climb? It is similar and no worse than any other big travel enduro bike. Your legs and lungs will still be the limiting factor. It is never going to whip up a hill like an Anthem. Steady away but will keep plodding.