San Rensho 

I have a Windsor Oxford, great bike. But I've noticed that when I have a good amount of pressure on the pedals, especially going uphill, it hesitates a little, does't shift immediately on every downshift and I can hear/feel something in the hub. The upshifts are absolutely flawless, each shift is fast no matter how pressure I am applying to the pedals. The yellow line is perfectly centered in the adjustment window so I don't think its a question of adjustment.

Thanks.

dsbrantjr

It is probably a question of technique. Back off the pressure on your pedals momentarily while shifting. It is also helpful to anticipate a downshift on hills and shift down before you get bogged down in the higher gear.

San Rensho 

So maybe this is the mirror image of shifting an SA 3spd. With an SA, you had to just slightly stop pedalling while shifting up, otherwise it wouldn't shift well, some would even back pedal a little while while shifting up.

So any 3 speed gurus that can address if its an adjustment problem or just a quirk, hint hint Dan Burkhart.?

dsbrantjr

I have no experience with Nexus 3-speeds but I suspect that you are right. Looking at the Nexus shifter, it appears that low is with a slack cable, while the Sturmey-Archers go into high when the cable is slackened. If so, the Nexus downshift is by spring action, so pressure on the pedals would tend to hold up the shift, if my observations are correct.
I had an old Dunelt with a Sturmey-Archer 3-speed hub when I was a kid, and I used to "pre-shift" the gear selector when I was accelerating, and when I spun out the hub would upshift "automatically". Probably wasn't great for the hub but it took the abuse for years without complaint.

Dan Burkhart 

My guess is the shift rod may be hanging up due to dirt or dried out grease. The bell crank pushes the rod in to upshift and the spring pushes it out to downshift.
I suggest removing the bell crank and the rod. Make sure it is grunge free, give it some oil and see if that helps.
Any internally geared hub is happiest when you pause the pedaling power to shift.

FiftySix

That's exactly what I have to do with my Nexus 8 otherwise a clean shift isn't guaranteed. I actually backpedal slightly whether it's a downshift or upshift, though.

San Rensho 

Its a brand new bike but I'll give it a try.

San Rensho 

This was my thought also, but I'll try Dan's advice too.

Wilfred Laurier

With IGHs, you should always ease up on the pedals when shifting. I have used SA, Suntour, and Shimano 3 speeds, Shimano 7 speed, and I currently have an Alfine 8 speed. The shifting is lightning quick if you ease up force on the pedals for the fraction of a second when shifting.

This is one of the real advantages of modern derailleur systems - the shaped and ramped tooth profiles allow shifting under load and thus require less finesse to use. The habit of easing up on the pedals when shifting is a small price to pay for the convenience of an IGH. IMO.

base2 

Agreed.
Stop pedaling.
Shift.
Carry-on.
That's just how IGH's work.
Even a Rohloff 500/14, a hub that OEM claims can not be harmed by an errent shift under load, will shift better with a pause.