Dinglespeed

[leebo]

I made my surly 1x1 into a dinglespeed( dual singlespeed). On my front chain rings, 34 inside 42 outside. On my rear wheel I have a woodman cassette hub with a 20 t cog next to the spokes,then a spacer and a 14 t cog. So I gots a 34-20 and a 42-14 with 1 chain. Test rides O.K. Needs to log some road miles and then some dirt for full test. I put on some road slicks.Weirwolfs 2.5's pumped up to 40 psi.

[heckler]

That is quite the gear jump! Road and techical off-road? sounds like a cool idea.

[heckler]

hey!

Related thoughts and question. I have a road SS and I was wondering whether anybody had tried putting two cogs on a cassette and the moving the chain to one or the other as needed. I have short horizontal dropouts on the bike so if I keep the cogs within 2 teeth I think I should be OK. I guess the question is whether the change in chain line will bag me. Input?

Thanks!

[SOcoach]

Realted thoughts and Ideas: If you put two cogs on the rear wheel of that road bike, be sure the chain ring is centered between the two rear cogs by adjusting the spacing on the cassete to prevent the chain from wanting to derail.

I plan to put two cogs in the rear of my Fuji SS since I have a double up front and move the Surly Singlator adjustable tensioner when needed.

The idea worked on my "9x2x1" that I rode at Santos in Florida all winter but that had a derailleur to help things stay in place

[heckler]

Yup, spacing will be critical! I'll let you know how it works!

[leebo]

Rode the surly to the fells opening day and took some pics for PK. The road cogs 42-14 worked great. The 20 tooth off road cog skipped and did not work out. I usually use a surly 19 or 22 tooth out back with good results. The shifting ramps may have been my downfall. In order for the dinglespeed to work, the setup requires 2 thin cogs and one spacer.The good news is that I got 28 miles on the day including the entire mtb loop @ the fells. Also plenty of road and some @ horn pond. 42-14 was a good for flats and moderate hills, somewhat challenging for the fells loop.

[heckler]

42-14? That is one honker big gear for off road! Very impressed!

[leebo]

26 miles on the dinglespeed for the HPSF work day. 16 miles round trip on the pavement, 10 on the dirt. Cogs all worked just fine, no skipping. The 42-14 seemed a little tall for gearing( 78 in.). I might try a 42-16(68 in) in the future. Fully loaded, fat tires, slight hills and a headwind for the slow ride home. I'll keep you posted.

[ACE]

What was your procedure for finding the ideal chain line with that set-up? Any chain skip?

[leebo]

The chainline was 2 different ones. Inside line was 34-20, ouside was 42-14. 2 rings up front , 2 cogs out back. To change gears, flip the bike upside down, move the chain, and readjust on the horz. drops, about 1/2 inch. No skipping issues with non ramped cogs out back.