The sprocket change has to do with the winter tire project. I`m not looking for any performance gains, only some more room for the rear tire. The problem is the gap between the swing and the tire. With the first tire (120/90-18) there was zero clearance with the mud guard attached.
The second rear tire (110/100-18) was almost good to go with no mods, but I wanted to make sure I got enough clearance so I spent the extra 12€ for a smaller sprocket.
The job itself is very easy. You need some slack for the chain, which requires loosening the rear wheel, but thats quicly done.
UPDATE [Feb. 6th 2018]
Other than the added clearance I can’t really tell the difference with the smaller sprocket. Yes, it has been months between rides, but still. I did not test the top speed as the conditions were challenging enough as it is.
I’ve thought alot about this ‘mod’. I know you didn’t do it for performance gains, but how is it? I assume your top end is compromised abit. How is the acceleration gain?
I know It puts the speedo further out…
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Can,t test it yet as there is no snow. Running the spikes on asphalt will run them down fast.
I assumed the speed came from the front wheel?
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Arh I see, spikes, cool!
No it appears to take the speedo feed off the crank as changing sprockets defo affects it. You can buy a device to correct it though…
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Ah, good to know. I somehow assumed that the speed came from the front when the ABS measures the rotation speed anyway.
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Hi Ferdinand.
I order a 13 tooth front online last week and picking up today.
Whats the device or how can the sped do be corrected?
Thanks.
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Why not just add in some chain links? Now your odometer will be off. And that’s bad.
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Don’t have the tools to add links. Odometer being off is trivial to me.
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Any thoughts on the sprocket change, how you finding it? . There has to be snow about now
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Yeah, one would think so, but no snow. Just cold. I’m going crazy waiting for a proper winter.
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Speedo calibration info…😁
https://thumpertalk.com/forums/topic/1058051-speedo-drd-setup-question/
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Thanks!
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I change the front-rear sprocket to 13-42 (from 14-40 the oem), get better performance not much playing the gear select to keep engine run well.
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