Altered gearing via Sprocket changes
 

Woooooooooo Hooooooooooooooo

Just changed the rear sprocket on my 900ss from the standard 37T to a 41T and the different is almost unbeliveable.

Its like a different bike.

The main effect is that for the same speed it appears to have pushed the engine revs up by at least 500rpm (sorry too busy having fun at present).

But the benifits are two fold - first, there seems to much less chain snatch at lower speeds, like around town.

2) I'm changing gears less frequently already as the top gears seem suitable for just about everywhere - and because of this my riding feels a little smoother (or perhaps I'm fooling myself).

The downside is that I keep looking for another gear in the box after top - because it feels like she could EASILY pull another gear.

But there again - I forgot to mention that she now PULLS LIKE A FREIGHT TRAIN:lol:

Regards - Frank

Mee too!!!
 

I've just had mine done, but only went to 39T. I like that higher revving as well, really brings out the sound of a v-twin.:D

[Edited on 13-8-2003 by Cris]

Nice one Chris - you've just convinced me I NEED a SL rear end (and my bike as well)...:lol::lol::lol:

Can you still use the same length of chain, and where can you buy these sprockets from and how much ???
Ta
Ian

I was told that by only going up 2t, I shoudn't need to change the chain. I needed a new chain though, so I changed the lot. still only cost me around £100 at ally pally. you could always change the front sprocket instead.

M&P accessories actually sent me the C&S I think they had 'JP' stamped on them. Sadly, the rear was a 39T when the standard for a 900 is 37T.

However, I bought my 41T via a guy privately on E-bay which I think is actually for a 600ss - could be wrong.

I had to move the wheel all the way forward to accomadate the 41T and the standard Gold DID 520 chain (damn - I counted the links as well....47???? cant remember)

I'm told that steel sprockets are the ones to go for over Aluminium every time as steel is much harder wearing - and if you can afford it - they can be made harder still with anodising, but I dont have any experience of this (but you can get a sproket in a nice colour then :cool: ).

Links:
M & P Accessories

Also told that Renthal & Afam are good:
B and C Express

also:
www.powerlinks.co.uk

www.biketorqueracing.co.uk

Good Luck - Frank

The B & C Website is excellent - link on the 'Road & Race link' and a brill PDF file will load listing loads of Ducati spec's

:lol::devil::lol::devil::lol::devil:

I bought Aluminium (Renthal), but had them hard anodysed for an extra tenner.;)

there's an sl single seat for sale on ebay.

http://cgi.ebay.co.uk/ws/ebayISAPI.d...hippingPayment

[Edited on 13-8-2003 by Cris]

Does this mean you have a spare 39t sprocket you are not doing owt with mate ???
Wanna sell it to me

Ian

Hey, I've just put a 14t front sprocket on my 900ssie, its sooo much fun, exactlly what frank sounds, its loads easier around town, pulls a lot better and its just GREAT.

Oh and by the way its £25 inc Vat n P&P for a Renthal, you dont need to take any links out the chain, you can do it without even taking the chain or wheel off. Takes about 10 mins.

Steve

(now on the wheelie machine ):lol:

Ian - YES - you have a U2U

U2U you back mate


Ian

Dropping the front to 14t would save messing around with the chain, but has anyone any thoughts on accelerated chain wear?

Nope, just the acceleration :)

Yes!
 

Fit a Scott-oiler :roll:

After 11,000 miles from new and constant checks on chain adjustment the markers on the swingarms have been moved by less than 5mm. I was going to wait until I had to replace this first chain/sprocket set but at this rate I'll be waiting for years. I'll be going up 2 teeth on my rear sprocket at the 12k service next month. What d'ya recommend, steel or hardened ally?

[Edited on 16-8-2003 by psychlist]

tont
were did you get your 14t sprocket from?
mail order, local shop?

Hey SSTU
It was my local bike shop mate.
Even fitted it in their workshop when it arrived.... took two days to arrive though.

My thoughts about accelerated chain wear are none, i replace them every winter, so doesnt get chance to get much wear. LOL
Steve

OK I've been thinking about sprockets since doing the Rockingham track day last week.

My bike is a 750ssie. Basically I was catching some 916 and 996 riders under brakes into the final hairpin, but they were then pulling away out of the corner and up the straight. So I was wanting some extra drive out of the corner. Sure my riding could probably improve, but I also felt like I was looking for more bottom end from the 750ss.

So change the sprockets to bigger/more teeth and it should pull better right?

However, given that with my not insubstantial bulk onboard I've only managed to wind the bike out to 125MPH (might be able to get an extra 10MPH with more road to play with), will changing the sprocket settings for more bottom end effect my topspeed all that much?

I'm also worried slightly by Frank's earlier comment about looking for another gear at the top end. I already start looking for another gear on the 750ss at about 80MPH plus. How much is changing the sprockets likely to make this worse?

Phill

[Edited on 27-8-2003 by phillc]

Hi Phil - were you with me in the novice group by any chance, I thought it was a pair of ST4's that were passing me - but if it was a 750 thats even more impressive - good on ya :lol:

Never riden any Duke more modern than my 92 900ss so cant really say - I do hunt for gears on dual carriage ways, but didnt at Rockingham -lol- I was trying to use as few as possible to concentrate more.

If you are near needing a new C/S set I think its well worth a go as it really is the cheapest performance (accleration) boost you can get and lets face it - how often do we use more than 100 mph on the road - officer ???

I think Datatool do an LED gear indicator to let you know what gear you are in - always thought this was hilarious in my younger days when a vaguely remember a bike coming out with a gear indicator in the cockpit - now I need one.

Cheaper for electronic rev counters - (£60 ish?) but a gear driven version is also available for us old crocks (£100 ish) gulp !

Enjoy whats left of summer :(

Regards - Frank

Hey Frank,

Actually Murray Mint was at Rockingham in the Novice group on his fully faired 750ssie and he was quicker than me so I'll give the credit to him!

I think I will investigate changing the sprocket settings, it's not a massive investment after all. Along with a couple of other small mods (airbox for one) I'll be interested to see the difference.

My bike does have a rev counter, so if I glance at that I can usually figure what gear I am in. It's just the kind of "I'm revving a bit high, need to change up" gut reaction that has me looking for a gear that isn't there.

Cheers
Phill

900ss spocket changes....
 

:frog:
Ive just changed my 2000 900ss (original 15/40) to a 14 at front.
Undecided yet as still burning in new bridgy 010's. will wait and see as ive a tracky day at mallory 11th sept.
any tips for (cheap) styling and personalisation greatfully accepted.
As its a 1/2 faired, a belly pan would look great. any ideas where from.
14 sprckt from JHPerformance, aka Ducati Coventry. Sprckts in stock. Dave in spares is a mate and pretty helpful. He had a 99ss till he visited Twycross Zoo via the hedge on the RH er just before the entrance.:sing:

Welcome to the mad house Paul!

Just had a quick look at Powerbronze's web site - they list a belly pan for my fully faired bike - but not for yours :(

http://www.powerbronze.co.uk

erm....cosmetics all obviously down to taste...Hi rise / double bubble screen, cooler cover and/or belly pan all sound ok

For a track day I think you should seriously consider some crash bungs or sliders as they are sometimes called to at least offer some bike protection in the event of a crash.

Powerbronze and R&G products sell them - amongst many others

http://www.rg-racing.com/ducatibikes.html

fitting on a half fairing would be even easier I imagine.

Best Wishes - Frank

Welcome Paul!

I have heard, although can't confirm, that with a minimum of jiggery pokery a Monster bellypan can be fitted to the half faired ssie. This was from a guy who was selling his 900ssie on eBay and had a bellypan fitted. But he was a bit vague.

If you do figure out how and what to do, let me know because I am keen also! I believe Spares Shack does Monster bellypans -

http://www.spareshack.com/

The only custom bits I've done to my bike is put a set of SILs 50mm slip on exhausts. Can't say it made a huge performance difference, but certainly made a massive sound difference. Speak to Neil at Cornerspeed if you're interested, he did a good job for me -

http://www.cornerspeed.co.uk/

Other bits I'd like to do include:

K&N Air Filter
Rear Sprocket
Corbin Seat

Once I've found the money for those I'll see where else I'd like to over capitalise. :-)

Cheers
Phill

[Edited on 6-9-2003 by phillc]

Mallory was ore (awe) some. the 14 t front made pulling out of the twisties much better and the 010's give plenty of warnig when letting go. Just a slight spin up outa the hairpin this morn when wet didnt even get the a*se twitching, and coming outa Edwina's ( who ever called a chicane after a bird that "does the ex PM) the rear span up and still held a great line.
Gotta recomment the 14 front sprkt for those with 900ssie's..........
Keep the black stuff down.
ps with some DP HH+ front pads, managed to outbrake a 999 and a 748 coming into the hairpin, shoulda seen their faces at the end of THAT session.
rgds
paul aka Mort.;):sing:

Yes certainly makes all the difference.

I now have 14t front and 40t rear with shorter 96 chain on my '98 900ss.

Been to Donnington today and was initially revving out everywhere, but when got used to it, needed better tyres fitting and was pulling well though the corners. Never actually got to max speed but pulling around 135mph down Dunlop straight with more to go.

The bike is so driveable on the road too, driving out of corners, when normally chugging and hesitating.

Try it, cheapest speed enhancement yet.

Andy

:frog:
Andy, Phillc, and all of you
thanks for the info. Glad the Donny track day went well, ....135 down dunlop straight??? with a 14 front sprokket. maybe you got the rec counter and speedo mixed up........if you did it, then wots the secret, as i find if difficult to get 120 now on short stretches.
To all the others that have answered thanks. I got a pr of remus ducati oerformance cans, the free flow airfilter and the perf. ECU and does she sound great gulping in loadsa air from 4 1/2 right up to 8 1/2 thousand.
someone mentioned a single seat for the 900ss, well i aint paying the £353 (incl's vat) for a ducati one, any ideas for say 100 notes or stretch to 150??
just remember with the hi level cans, no rear footrests so other half stays at home when Matlock on sunday morn calls, bloody good thing those cans were.
Black stuff down, plastic lid up
rgds
paul aka Mort:roll:

Hi Paul,

My 900ss had many mods inc. Lighter flywheel, perf airbox, lots of engine shimming (increased compression?), magnesium wheels, rear-sets, fully floating sps brakes & disks, carbon everywhere....& nice front fairing 999 style!

Anyway she pulls well and in fact went off the speedo with the 15t on chasing a zx9.

Are you revving fully? I pull to 9-9.5k before changing on the track, especially out of coppice in 4th.

I normally run scorpion carbon cans with the race ecu, but couldn't on this day due to low-noise regs.



[Edited on 17-9-2003 by andys 900ss]

Nice one! Its good to know that people still put a lot of time and effort into the 'older' Ducati's.

I did wonder myself about hitting the red-line in top gear and the erm.... (cough) the opportunity presented itself today...

My old girl ran right up to 9 grand without any problems, showing an indicated 145 (ish) on the clock.

Mind you - I guess the extra cubes have helped:lol:

Regards - Frank

Got me a 14t sprocket
 

After a bit of fishing about I got a 14t Renthal sprocket mail order from HPS (Harwood Performance Source)
Price £21.62
p&p £4.52
VAT £4.52
Total £30.40
Contact email address graham.beardsmore@bikeHPS.com

Unfortunatly I havent had time to fit it yet so I can't coment:yawn:

Guys
Thanks for all the tips
Ive already posted this on a coupla other queries on the board but go look at
www.diopa.com
its all in german but easy enuff to translate
nearly all carbon fibre stuff, single seats, fairings neat front light arrangement twin 45mm side by side arrangement
will prob order the bellypan and twin light stuff.
anyone know a really good paint shop as will probably want a new colour scheme this winter.
live leicestershire area so e mids or brum ideal
pricing looks v good as well:roll:
br
paul