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I just assembled a new single speed "Thin" with the LCD control. It seems like its geared really low, especially when you have the option of the electric motor assist. When I'm going full bore, I'm pedaling like a mad man.  What are the consequences of swapping the front sprocket for a larger one? I notice that Sondors' front sprocket has a kind of integral chain guard on either side of the chain wheel too. If I were to swap out the front sprocket and extend the chain, is there a supplier that makes a similar but larger diameter sprocket with the chain guard?

Thanks for any suggestions!

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The Bash Guard is not a necessary component of chainrings and I’ve never seen an aftermarket square taper crankset that has both inside and outside bashguards but they may be available in the marketplace. Your best resource is either eBay, Amazon or Aliexpress.  There are a vast number of choices.

You'll need to consider tooth count and  crank arm length (172.5 mm is most common for 5’-10” To 6’ men) but it has to be square taper mounting to match the square taper bottom braclet spindel on your bike and of course single speed. 

This crankset has been suggested as a replacment but it may be too steep a jump in tooth count for starting from a standing stop unless you use throttle to over come the force required to get rolling, then your legs won’t spin fast enough to reach max leg power to match the 20mph top speed . The 40 tooth stock crankset was chosen and the best tooth count comprises between starting and the full speed pedaling cadence for the Thin. Unless you’re planning power upgrades this 52 tooth crankset will be overkill. 

https://www.aliexpress.com/item/bike-Crankset-Bicycle-Parts-mountain-bike-BMX-Cranks-chain-wheel-BCD130mm-square-hole-52T-single/32734743548.html

I would suggest you Google Search, for a Single Speed, Square Taper, 44 tooth or 46 tooth crankset. 

There are other, Thin Upgrade Posts, in the forum entries and you can use the search window on the top right of every page to search them out. 

image.jpeg.460181aebee7ca43d0f0c2b7c7188c24.jpeg

     Reddy

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The single speed bikes are geared for the best compromise between Starting from a bead stop and reaching top end.
There are a couple of reasons that you should replace the stock crankset instead of just replacing the chainring, in my opinon. 

First, the Crankset that comes on our Sondors is the of extreemly poor quality. We have had a rash of crank arm threads failures, for pedal attachments, that have stripped on new bikes, especially on the recent production run. On the other end of that statement, one of my own crank arms threads had stripped and my Indiegogo Original Fat was one of the first Sondors built. Seems quality has remained poor. I suspect one or the other or maybe both defects are due to the composition of the metal in the forging and/or the initial threading of the arms. 

Secondly, and probably the most important is that the stock Sondors Chainrings are not replaceable but riveted on the to the crank spider. Quality cranksets can be purchased fairly inexpensivly (generally, the more you spend the better product you’ll receive)  this is the opportune time to upgrade the quality of that component to guard against future failure. 

 So for a little extra investment you’ll get a Crankset that was engineered as a complimentary unit and of better quality than just replacing the ring on questionable crankarms, that could involve some machining of the original. 
 

I use a 56Tooth on my EBL.

144E7DE9-532C-4B81-B396-7A11B3A1B1C4.thumb.jpeg.c04a803ecc7425760a6320430b15e1d0.jpeg

And a 58T on my EWL

3D578AEE-6491-4BF8-8368-2A4FB33481F9.thumb.jpeg.eb67dbede3c94dbdcca330b89527e1b8.jpeg

image.jpeg.460181aebee7ca43d0f0c2b7c7188c24.jpeg

     Reddy

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