1x11 gearing on a bent

DIscuss anything relating to non-standard cycles and their equipment.
UpWrong
Posts: 798
Joined: 31 May 2009, 12:16pm
Location: Portsmouth, Hampshire

Re: 1x11 gearing on a bent

Postby UpWrong » 6 Jul 2019, 6:03pm

Still no cassette, but this looks good if I can make a customised 13-40T cassette:
http://ritzelrechner.de/?GR=DERS&KB=33, ... H&DV=teeth

UpWrong
Posts: 798
Joined: 31 May 2009, 12:16pm
Location: Portsmouth, Hampshire

Re: 1x11 gearing on a bent

Postby UpWrong » 7 Jul 2019, 3:21am

In the name of science, I have ordered a Goatlink and a 40T expander sprocket :lol:

speedy7777
Posts: 12
Joined: 24 Sep 2017, 11:20pm

Re: 1x11 gearing on a bent

Postby speedy7777 » 24 Jul 2019, 10:16pm

You probably went the right way with the double. My recumbent bike is set up with 44t single front ring and 11-40 - 10 speed cassette. After about a thousand K im finding id like a little more top speed (currently spinning franticaly to hit 60kmh) eg 48t or 50t. It would also be a better road bike if the gears had smaller gaps between them. But the simplicity of 1x is quite nice nice too. So a double would have suited me well and i might try it one day with a 11 -32 cassette but in the mean time maybe try a 46 tooth front ring.

UpWrong
Posts: 798
Joined: 31 May 2009, 12:16pm
Location: Portsmouth, Hampshire

Re: 1x11 gearing on a bent

Postby UpWrong » 30 Jul 2019, 4:27am

I've been riding my RANS Stratus XP with its 3x9 and it's given me pause for thought. The triple on that is so easy and nice to use - it has SRAM X9 with its 1:1 actuation ratio. I believe the exact ratio is 1.1 to 1. My Paseo currently has a 2x9 using Deore RD, actuation ratio is 1.7 to 1. It's performance has deteriorated with use. (See https://www.artscyclery.com/science-behind-the-magic/science-behind-the-magic-drivetrain-compatibility/)The triple on the RANS is a 28-38-48 Spa chainset with Sora FD. Ring changes are easy and smooth with the 10T gaps.

So I either change my Paseo to 2x10 with XT-Dynasys (actuation ratio 1.2 to 1) or re-instate the 3x9 with SRAM X9. The double solution will use a 33-48 compact double. I'm wondering how slick or not the 15T change will be.