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Italiatwin 
Moto GP Alien 
Joined: 05 Feb 2014 Location: United Kingdom Status: Offline Points: 256 |
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 Posted: 09 Feb 2014 at 07:36 |
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Hi mate
I ran 15/44 for a good few miles. Very lively in lower gears, 3 gear wheelies and still genuine 140 top end. Trouble was 1st gear was almost redundant, could pull away in 2nd easy. No run 15/42 and I think it is a better gearing for real life road riding. |
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2003 RSV Streetfighter/Tuono thingy, and 2003 Multistrada.
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legend88
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Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6699 |
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Posted: 09 Feb 2014 at 09:34 |
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15/42 (2.8) is almost identical ratio to 16/44 (2.75) - a 1.8% difference which is about 11-13% lower than stock - so it's no surprise people on here are saying they are happy with both. 15/44 (2.93) is 19% lower than stock whuch is a huge difference so no wonder it wheelied everywhere! I guess it might depend what chain you are running. I would tend to go with a 16 I think as you are not asking the chain to hold such a tight radius round the front sprocket.
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IanG
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Joined: 04 Oct 2010 Location: N Wales Status: Offline Points: 10767 |
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Posted: 09 Feb 2014 at 12:06 |
That's what I was wondering about  effectively losing a gear,although I'm not bothered about what it feels like on the road as I don't plan on doing much road riding from now on,I just want more instant grunt out of corners on tight tracks. For the sake of around £20 ish and half an hours play it's worth it I reckon. |
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www.apworkshops.co.uk
www.apriliaforum.co.uk www.apriliaownersclub.co.uk Looking forward to the next track day |
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nikfubar
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Joined: 29 Oct 2013 Location: East Grinstead Status: Offline Points: 553 |
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Posted: 09 Feb 2014 at 14:36 |
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I run 16/42 tried 16/44 & it felt like an IL4 |
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IanG
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Joined: 04 Oct 2010 Location: N Wales Status: Offline Points: 10767 |
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Posted: 09 Feb 2014 at 14:59 |
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Tried that combo for a couple of years and found it far too long,even 16/44 seems a bit long so if 15/44 ends up a bit short perhaps 16/46 might be ideal given that going down a tooth on the front roughly equals going up 3 on the back.
Would need a longer chain then I suppose,but as I only generally play on tighter tracks anyway ultimate top speed isn't an issue. |
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www.apworkshops.co.uk
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pjroth72
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Joined: 06 Jul 2012 Location: west yorkshire Status: Offline Points: 2901 |
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Posted: 09 Feb 2014 at 16:03 |
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IanG 1 down on the front is normaly like 2 up on the back so i was always told pal
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IanG
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Joined: 04 Oct 2010 Location: N Wales Status: Offline Points: 10767 |
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Posted: 09 Feb 2014 at 17:33 |
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Really?
 I'm intrigued now, I did have a gearing program on one of my Pc's I'll have to hook up some old HDD's and try and find it. It's possibly somewhere in between the the two if all the decimal places are counted Whatever,I find 16/44 a bit long so I'll try 15/44 and take it from there,I'm sure the sweet spot will be somewhere in between. |
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www.apworkshops.co.uk
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Italiatwin
Moto GP Alien
Joined: 05 Feb 2014 Location: United Kingdom Status: Offline Points: 256 |
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Posted: 09 Feb 2014 at 17:45 |
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Gearing Commander.something or other
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2003 RSV Streetfighter/Tuono thingy, and 2003 Multistrada.
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pjroth72
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Joined: 06 Jul 2012 Location: west yorkshire Status: Offline Points: 2901 |
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Posted: 09 Feb 2014 at 18:10 |
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as you know that's what im running 15/44 but not had time to try it out yet lol pissing weather eh .will get out on her this week though
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www.apriliaperformance.co.uk
www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
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IanG
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Joined: 04 Oct 2010 Location: N Wales Status: Offline Points: 10767 |
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Posted: 09 Feb 2014 at 18:28 |
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Looking forward to hearing what you think,I must order another sprocket as my last 15t is goosed.
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WARNZ
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Joined: 10 May 2012 Location: Essex Status: Offline Points: 1171 |
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Posted: 09 Feb 2014 at 18:51 |
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I got 15-42 on my Gen2 but does anybody run 41-43-45's seems wired y we all have to have an even on the rear?
Ill b trying something different at snett this yr as I top out 5 on the Bently straight which is long n don't use first at any point after pulling away,seems like a waste not using 6th |
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j180
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Joined: 18 Jan 2014 Location: scotland Status: Offline Points: 1100 |
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Posted: 09 Feb 2014 at 18:54 |
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I run 16/44 on my Tuoldo, it makes riding through the 30s and 40 zones much easier, also makes it easier to lift the front wheel. Best mod so far and that includes end can and chip.
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pjroth72
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Joined: 06 Jul 2012 Location: west yorkshire Status: Offline Points: 2901 |
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Posted: 09 Feb 2014 at 19:18 |
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if its not my thing running a 44 rear might try 43 instead & leave the 15 .;-)
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bigbrownepaul
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Joined: 23 Oct 2012 Location: Rhondda Status: Offline Points: 619 |
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Posted: 09 Feb 2014 at 19:35 |
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I switched to 16/44 on my Tuono and it was like night and day, its just suits the engine spot on.
Just done the RSV now and feel the same, its a great mod and just suits the engine down to the ground
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No bike 🙈
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legend88
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Joined: 18 Aug 2013 Location: Newcastle Status: Offline Points: 6699 |
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Posted: 09 Feb 2014 at 23:31 |
Don't really need a program as it's only two numbers, one divided into the other. Change by one rear tooth from a 44 gives a 2.27% change in gearing. Change by one front tooth from a 16 and you change the gearing by 6.25%. So in this case, a 1 tooth change to the front is the same as 2.75 teeth change at the rear. |
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IanG
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Joined: 04 Oct 2010 Location: N Wales Status: Offline Points: 10767 |
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Posted: 10 Feb 2014 at 21:40 |
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That was easy explained like that
 Ok, 2.75 is nearer 3 than 2 so I win I had a feeling it was somewhere between the two but I couldn't be arsed to think about it any more. 
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www.apworkshops.co.uk
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pjroth72
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Joined: 06 Jul 2012 Location: west yorkshire Status: Offline Points: 2901 |
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Posted: 10 Feb 2014 at 21:47 |
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Shut up lol
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pjroth72
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Posted: 03 Mar 2014 at 16:38 |
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well finally managed to get the bike out for a short test ride today && all i can say is WOW what a transformation lm glad i went for 15/44 its great at low speed eg around my village && town & the pickup is very good not kained it yet as i wasn't wearing my leathers just boot & jeans & jacket but if anybodies goiing to put a 15 front sprocket do it .first gear is still useable but pulls great all through the box ,just need to mod airbox aleady got the seal for that .Then eds chip then setup & by AP boys champion.its awesome now cant wait to get the rest done hehehehe , roll on summer
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jjhj306
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Joined: 18 Oct 2013 Location: North Wales, UK Status: Offline Points: 234 |
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Posted: 04 Mar 2014 at 10:10 |
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Just a quick question guys got another sprocket carrier yesterday and it came with a new 40 tooth sprocket so being a tight arse fitted it:-) as in my mind using the bike for commuting and not playing at mo thought giving it longer legs and keeping the rpm lower will save me fuel
Anyone see any problems with fitting it though? |
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pjroth72
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Posted: 04 Mar 2014 at 10:47 |
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i dontt think it will make much difference pal to be honest..i bet you will rev its nuts off lol , which means use more fuel ,someone will know better than me pal .
Think like me ITS FREE if you look at it lol
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jjhj306
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Posted: 04 Mar 2014 at 10:51 |
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The ride into work this morning was hmm can't really put the speed on here ;-) but the same speed before and now and the rpm is around 2k lower now than before at the same speed but then I've only done 30 miles lol
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pjroth72
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Posted: 04 Mar 2014 at 11:04 |
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well if you like it pal then alls well ;)
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jond58
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Joined: 14 Nov 2013 Location: Selby Status: Offline Points: 2184 |
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Posted: 04 Mar 2014 at 18:21 |
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I'm running 17/42 on my gen1 but they need changing. The bikes for road use only, I don't find it slow!!! I'm thinking about 16/43. Does anyone use that and also does anyone know what chain length I need?!
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pjroth72
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Posted: 04 Mar 2014 at 18:28 |
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jond normaly its 16/44 but .15/44 is good its not too much neither. think its 108 link chain pal
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sparky6800
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Joined: 14 Dec 2012 Location: chorley Status: Offline Points: 780 |
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Posted: 04 Mar 2014 at 18:34 |
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16/44 is spot on imo and depending on tyre size standard chain shoul be bob on
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jond58
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Posted: 04 Mar 2014 at 18:45 |
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16/44 does seem to be more popular so might go for that. 108 chain ok then?
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IanG
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Joined: 04 Oct 2010 Location: N Wales Status: Offline Points: 10767 |
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Posted: 04 Mar 2014 at 19:15 |
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I'm running 16/44 and not that impressed,I'm going to drop down to 15t on the front and try that.
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www.apworkshops.co.uk
www.apriliaforum.co.uk www.apriliaownersclub.co.uk Looking forward to the next track day |
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pjroth72
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Posted: 04 Mar 2014 at 19:17 |
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Ian its good ,not arm wrenching but turns my stomach with excitement.lol but don't forget my bikes standard airbox k&n filter & titanium chip / system so when the airbox gets modded & eds chip i think it will be a lot better
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sparky6800
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Posted: 04 Mar 2014 at 19:41 |
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Mr G is track riding , 16/44 for road is about reet for most peeps. And a 108 should be ok .
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pjroth72
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Posted: 04 Mar 2014 at 19:51 |
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sparky have ya finished that bike yet we need pics
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Italiatwin wrote: