Quote:For anyone interested, I fitted the 15 tooth front sprocket today.

Just been out to test it (about 15 milles) on a mixture of town, B roads and some A roads.

In my opinion the bike is much more useable. I can use 4th gear down to 30 before changing to 3rd.

To sumerise I found myself changing gear a lot less on this brief test ride.

Quote: 

good day dear Fixitsan 

 

many thanks for the reply - and for sharing your experience ideas and insights. 

 

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update: see here the page: https://www.tdm-yamaha.heliohost.org/?page=RAT
 
 
with a awesome great range -
 
front sprocked from 13 to 19 teeth and besides that
rear sprocket  from 34 to 50 teeth 
 
this is overwhelmingly big
 

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Quote: 

good day dear fixitsan 

 

many thanks for the reply   great to hear form you 

 

well i ride also a Suzuki VX 800 _ with 

 

5 gears and cardan - so far  less options to do any thing in that direction 

 

 

but the VX has got power enougth for a different gearing  - to lower the rpms 

 

cf: https://www.vx800.de/forum/viewtopic.php?t=7370

<div>and of course:  https://www.volusiariders.com/threads/how-to-guide-vs1400-drive-on-a-vl800-c50.185987/
 
and - besides that i have had a Suzuki GS 500  - where i wanted to do the same - lowering the rpms 
Adding a Tooth -- Going Up to a 17T Front Sprocket
https://gstwins.com/gsboard/index.php/topic,21803.msg210981/sslRedirect.html?PHPSESSID=5fc390ff86834042d31768d035365aa2#msg210981
 
so - i think the TDM is pretty good for thinking about these matters (too) 
 
i wonder _ which front sprockets fit on the TDM; 900 
and which rear sprocekts   _ 
 
stock is 16 / 43  isn ´t it !`?
 

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Quote: 

good day dear  Fixitsan 

many thanks for the reply - i did not get it - you link to exactly this (!!) thread

 

look forward to a fruitful discussion of all things gearing and gearing ratio

 

perhaps we can discuss all that things with regard of this great page

 

https://www.tdm-yamaha.heliohost.org/?page=RAT

 

 

Interesting topics

 

what options do we have to change the gearing ratio

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with a awesome great range -
 
front sprocked from 13 to 19 teeth and besides that
rear sprocket  from 34 to 50 teeth 
 
which tires do you use - which are possible
 
this is overwhelmingly and awesome thread.
 
i look  forward to hear from you
 
with a aw
esome great range -
 
front sprocked from 13 to 19 teeth and besides that
rear sprocket  from 34 to 50 teeth 
 
this is overwhelmingly big
 
 
-BTW . i am interested in all that things related to the grearing change. 

Tires 

sprockets - size - and adresses where to obtain!?

and all that things.
 
 
 

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varuios rsprockets for the front - of TDM 900
https://www.wemoto.com/bikes/yamaha/tdm_900/11/picture/sprocket_front_less_1_tooth_-_jt_check_chain_length
 
 
 
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Quote:Hi and thanks. There is a link earlier in the thread to a site gearingcommander which is very very good. It does all the maths for you, but there's nothing like experiencing the change - if you know what I mean. Can't help thinking if  a 15 tooth sprocket was better than standard 16 then Yamaha would have done it. Having said that, my mate (mentioned earlier) is a dinosaur biker/racer/mechanic and reckons for the losses on top speed the bike will be more useable.

So for the cost of a sprocket I will try it (don't know when tho). When I have done it, and  road-tested it I will be sure to let you know.

atb