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irish aprilia
Premium Member Joined: 19 Jan 2013 Location: carlow ireland Status: Offline Points: 395 |
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Posted: 21 Jan 2018 at 19:55 |
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Taking delivery on a tuono during the week whats the best gearing on sprockets....
Don't know what on it at moment |
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Si McMille
Premium Member Joined: 04 Dec 2017 Location: Burscough Status: Offline Points: 98 |
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If it’s a gen 1 15/42 or 16/44.. 👍
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2001 RP Mille
15/42 gearing 54mm tb’s 54mm Evo stacks - dual velocity Evo air box with K&N Unrestricted intake boot Custom Collector Mod Evo Ti Exhaust Aprilia EPROM PC3 Tuono riser conversion |
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deloco7
Premium Member Joined: 14 Dec 2015 Location: Isle of Lewis Status: Offline Points: 282 |
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The popular consensus is to go -1/+2 from standard on both Gen 1 and Gen 2 bikes.
if yours is a Gen 1 then 16/44 is really good. Makes it a far nicer bike at lower speeds and round town. Gen 2 would be 15/42 for a similar change. Never had a G2 so can't say for sure but lots of guys recommend it. Anything is better than standard
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irish aprilia
Premium Member Joined: 19 Jan 2013 Location: carlow ireland Status: Offline Points: 395 |
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Cheers it's a gen 2.... Will have a look when it arrives...
Any idea what the sizes are as standard |
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deloco7
Premium Member Joined: 14 Dec 2015 Location: Isle of Lewis Status: Offline Points: 282 |
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Gen 2 is 16/40 standard
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irish aprilia
Premium Member Joined: 19 Jan 2013 Location: carlow ireland Status: Offline Points: 395 |
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Cool thanks |
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Si McMille
Premium Member Joined: 04 Dec 2017 Location: Burscough Status: Offline Points: 98 |
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There’s no difference to a 16/44 to a 15/42.. both practically the same gear ratio.
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2001 RP Mille
15/42 gearing 54mm tb’s 54mm Evo stacks - dual velocity Evo air box with K&N Unrestricted intake boot Custom Collector Mod Evo Ti Exhaust Aprilia EPROM PC3 Tuono riser conversion |
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deloco7
Premium Member Joined: 14 Dec 2015 Location: Isle of Lewis Status: Offline Points: 282 |
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Its not just about the same gear ratio its also about how the bike behaves and rides particularly at lower speeds.
I'm not aware of anyone (apart from yourself) who has kept the 42 T rear. I'm not saying there isn't more people who have kept it but almost universally people go up on their rear sprocket +1/+2/+3.... The -1/+2 is recommended by people all over - probably for a good reason. If it was all about the gearing ratio then why would people bother to change the rear sprocket?
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ConTRo13r
Moto3 racer Joined: 21 Jan 2018 Location: Kent Status: Offline Points: 30 |
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Going down too small a gear on the front will give a more acute angle meaning greater chain wear and also clearance issues with the chain guide.
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Si McMille
Premium Member Joined: 04 Dec 2017 Location: Burscough Status: Offline Points: 98 |
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Theres quite a few riders have chose to drop to 15front and keep the 42 rear as it’s cheaper just buying a front sprocket..
Rule of thumb has always been 1 tooth on the front equals approx 2 on the rear. Having 2 different sprocket configurations with the same gearing ratio will perform no different on the same bike - as they have the same final drive!! |
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2001 RP Mille
15/42 gearing 54mm tb’s 54mm Evo stacks - dual velocity Evo air box with K&N Unrestricted intake boot Custom Collector Mod Evo Ti Exhaust Aprilia EPROM PC3 Tuono riser conversion |
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deloco7
Premium Member Joined: 14 Dec 2015 Location: Isle of Lewis Status: Offline Points: 282 |
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yeah buying one sprocket is usually cheaper than buying 2. Again, I would choose to replace both normally at the same time.
We'll agree to differ Si. You've never tried a 16/44 and I've never tried a 15/42 so neither of us really know whats best. However the OP has a Gen 2 so what we have on ours is pretty irrelevant for him.
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legend88
Premium Member Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6597 |
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As Si says, 15/42 is almost the same as 16/44 (In fact there is less than 2% difference). It doesn't matter who has tried what (Or not) it's engineeering fact that they are (Almost) the same so will behave the same on the bike. So don't mess around wasting money on trying another combination that will give you the same result as you already have.
Do take on board ConTRo13r's point as well though as re chain wear etc. |
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deloco7
Premium Member Joined: 14 Dec 2015 Location: Isle of Lewis Status: Offline Points: 282 |
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Legend88,
Ok fair enough, but why in that case if they 2 are so close, do so many people change to a -1/+2 set up. If its the same and obviously cheaper then whats the point of going larger on the rear? |
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Si McMille
Premium Member Joined: 04 Dec 2017 Location: Burscough Status: Offline Points: 98 |
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My honest opinion - because ppl just go with what there told.
But with doing homework and finding stuff out yourself you realise that there more than 1 way to skin a cat (forgive my punn).. If you have a perfectly good rear sprocket, why change it, but if it’ need replacing might aswell go for a larger posher one. 👍 |
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2001 RP Mille
15/42 gearing 54mm tb’s 54mm Evo stacks - dual velocity Evo air box with K&N Unrestricted intake boot Custom Collector Mod Evo Ti Exhaust Aprilia EPROM PC3 Tuono riser conversion |
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deloco7
Premium Member Joined: 14 Dec 2015 Location: Isle of Lewis Status: Offline Points: 282 |
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Interesting and quite possibly very true Si. I've still never heard of anyone keeping the 42 rear tho
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legend88
Premium Member Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6597 |
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Personally I would prefer going -1/+2 than just -2 at the front becasue of the issues (discussed above) with small front sprockets. Now, many people have done this and apparently have no issues at all so maybe it is a bit of over cautiousness and of course with the relatively low miles that most (Although not all) of us do on these bikes wear probably isn't too much of a concern. The other potential issue as you go ever smaller on the sprocket size i that it becomes easier to flip a chain if the tension isn't spot on. It's all a matter of undertanding what you intend to do an evaluating the benefits and potential consequences. If you aren't sure ask people WHY they are doing something and HOW that improves things, not just what to do. When I was growing up and throughout my education, I was always advised to ask WHY of everything so that I understood rather than just blindly memorising information. It sometimes irritates the people you talk to mind! |
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Si McMille
Premium Member Joined: 04 Dec 2017 Location: Burscough Status: Offline Points: 98 |
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Exactly, if o don’t understand something I will question it to death.
What’s the degree of chain on a 16/44 compared to a 15/42? I can gues it will be very minimal, but there guys that go 15/43-44 even 45.. that serious stunt gearing. Lol |
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2001 RP Mille
15/42 gearing 54mm tb’s 54mm Evo stacks - dual velocity Evo air box with K&N Unrestricted intake boot Custom Collector Mod Evo Ti Exhaust Aprilia EPROM PC3 Tuono riser conversion |
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Si McMille
Premium Member Joined: 04 Dec 2017 Location: Burscough Status: Offline Points: 98 |
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Ok..
Just been on sprocket commander and compared both sprocket setting. 16/44 110chain 15/42 108chain Both chains rotate practically the same distance as each other over a mile. From sprocket - sprocket they measure within .3” of each other. Both chains calculate roughly the same ware rate, but the 17/42 stock has the least ware of all (stock). So if you ask me don’t replace the chain and rear sprocket if you don’t have to, just drop the front to a 15, but if they all require replacing, do them all. |
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2001 RP Mille
15/42 gearing 54mm tb’s 54mm Evo stacks - dual velocity Evo air box with K&N Unrestricted intake boot Custom Collector Mod Evo Ti Exhaust Aprilia EPROM PC3 Tuono riser conversion |
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irish aprilia
Premium Member Joined: 19 Jan 2013 Location: carlow ireland Status: Offline Points: 395 |
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What's the advantage of dropping the front tooth -1
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budd
Moto GP Alien Joined: 07 Oct 2014 Location: Weast Yorks Status: Offline Points: 720 |
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Basically makes it more pleasant to ride in the lower gears and a bit livelier throughout the rev range, for sure it lowers potential top speed from aprox 178 but really this isn't an issue in practise. To add to the discussion I'm currently on 15/42 after running 15/44, I found the latter 'to' lively lifting the front out of corners to easily and the sub 150 top end wasn't enough also when I tried a 60 profile rear supercorsa it wouldn't fit in the in swing arm !! I switched back to 42 rear to allow tyre clearance and found it preferable to 15/44, I am a bit concerned about the possible extra chain wear due to the 15T front sprocket so I'll be switching to a 16T front, initially with the OE 42 rear but I'll probably try the 16/44 combo just because I already have a 44t rear and it's broadly similar to my current 15/42 setup but kinder on the chain. I think maybe for me the prefect setup would be 16/43, it offers just over 160 top end and should still give the low speed benefits but without been to wheelie prone. |
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legend88
Premium Member Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6597 |
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I've posted this before but some who haven't seen it may find it interesting:
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Si McMille
Premium Member Joined: 04 Dec 2017 Location: Burscough Status: Offline Points: 98 |
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The chain ware on a 15/42 would only be marginal compaired to a 16/44..
16/44 has a marginal taller gearing, and I mean a ‘bee’s wing’ marginal.. For smaller front sprockets we are talking in extreme conditions like dropping to a 14 or 13 front or even going up to a 45 rear on a 15 front. There extreme cases.. Both configurations with there designated chain have practically the same values as each other. |
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2001 RP Mille
15/42 gearing 54mm tb’s 54mm Evo stacks - dual velocity Evo air box with K&N Unrestricted intake boot Custom Collector Mod Evo Ti Exhaust Aprilia EPROM PC3 Tuono riser conversion |
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Diablo
Premium Member Joined: 29 Sep 2010 Location: Upwell Status: Offline Points: 3126 |
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I was just looking for that!! |
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Question everything.
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Diablo
Premium Member Joined: 29 Sep 2010 Location: Upwell Status: Offline Points: 3126 |
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Didn't some of the RSVR's come with a 16 tooth front sprocket taped under the seat?
I heard that the 17/42 gearing was to get round some of the noise regs? |
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Question everything.
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legend88
Premium Member Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6597 |
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I heard that, in fact I think it was one of Ian G's posts that suggested that the 'R' versions came with one. However I have an 01 RSVR that I bought new and I never found one. Maybe the dealer half inched it! |
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Diablo
Premium Member Joined: 29 Sep 2010 Location: Upwell Status: Offline Points: 3126 |
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Their mechanic suddenly started pulling monstrous wheelies on his stock RSV.... |
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Question everything.
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mwlehman
Moto3 racer Joined: 07 Jul 2017 Location: USA Status: Offline Points: 37 |
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my wife and I are both running 16/44 on rsv1000r gen 2 and tuono gen 1..she thinks she is quicker than me..
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