Surly Long Haul Disk Trucker Recent conversion

Hi everyone so pleased I found this forum. I have recently converted my Surly LHT using a Bafang 250w motor and 17 amp hour battery. Went out for a ride the other day I enjoyed very much. Completed 29 miles with only using only 25% of the battery. I only used it on hills and but certainly helped a lot on the steepest ones.

 

My question is. Now only have one chain ring on the front which is a 42T and 9 speed cassette on the back with the largest wheel having 32T I want to change to a 11 speed 46T Cassette to make things a little easier when not relying on the battery, should the battery get too low on longer rides. I would also need to change to flat bars to give more room and accommodate the shifter. Does anyone have any suggestions on a low budget setup that would do the job.

If using a 46t cassette you will probably need a derailleur extender like a Wolf tooth road link or the copy version from SJS Cycles, your derailleur I doubt will be able to handle the extra tooth count without one added.

 

This cassette come with one.

https://www.aliexpress.com/item/32989392433.html?spm=a2g0o.productlist.0.0.110d1c32IjLfWC&s=p&algo_pvid=5ffa7f56-ff14-4994-bf51-d2828ed699bf&algo_expid=5ffa7f56-ff14-4994-bf51-d2828ed699bf-0&btsid=19b1d45f-99c9-4694-9971-9736a39d3aea&ws_ab_test=searchweb0_0,searchweb201602_9,searchweb201603_52

If using a 46t cassette you will probably need a derailleur extender like a Wolf tooth road link or the copy version from SJS Cycles, your derailleur I doubt will be able to handle the extra tooth count without one added.

 

This cassette come with one.

https://www.aliexpress.com/item/32989392433.html?spm=a2g0o.productlist.0.0.110d1c32IjLfWC&s=p&algo_pvid=5ffa7f56-ff14-4994-bf51-d2828ed699bf&algo_expid=5ffa7f56-ff14-4994-bf51-d2828ed699bf-0&btsid=19b1d45f-99c9-4694-9971-9736a39d3aea&ws_ab_test=searchweb0_0,searchweb201602_9,searchweb201603_52

Thanks very much , very helpful.

My 2 x10 gravel bike only had a 11-34 cassette and the gearing wasn't low enough so I added a 42t cassette, the derailleur didn't have the capacity to handle the 42t so it needed extending to allow good changing. I used a Wolf tooth copy and didn't need to do much except adjust the B/stop adjustment to close the gap between the jockey wheel/chain to the cassette cogs.

Edited November 9, 20196 yr by Nealh

Which derailleur was that? I am already pretty extreme - 48-36-26 and 11-40 but get away with it because I don't run big:big and little:little chainwheel/cassette combinations. I am looking for a better derailleur because the Alivio is pretty bad, RD-M592 SGS is on my short list.

 

OP: With a single 42 there shouldn't be any issues with any long SGS derailleur and you can find 9 speed 11-50 cassettes!

Hi,i have this unused Shimano XT long cage rear derailleur spare. part no: RDM772SGS.

 

Photos not that good as I am using my phone, make me a decent offer and it's yours.

 

Thanks

Tiagra RD4700 GS medium derailleur.