Down one? or up two?

[cornfedwhitey]

Whats the word ladies? Whats the best way of going about this for someone who is low on funds, and doesnt wanna do a 520 Conversion. I wanna spend less than $75.00 , should I go down one up front? or up two in the rear?

[66droptop]

Don't pay attention to how I did my 520 kit. The PROPER way is to go up one in front and down two in back. More top end. Otherwise the fun is all over at like 165mph, and you don't want that. Tonight I was just shy of redlining 6th. I was pulling like 10,800rpm. What were you pulling? Yeah, my point exactly.



OK, but now seriously. Swapping the front will make the bigger difference, mathematically. But going up in the rear will make for less strain on the chain.

[cornfedwhitey]

Last night i was cruising at 162 , 5th gear pretty close to redline ;)

[chrisOH]

Go +2 in the rear as it will shorten the wheelbase, more torque for easier wheelies, and little bit quicker steering with lighter sprocket. Looking at about $45 for the sprocket.

If you want top end then just go one up the front and -1 on the rear. Bike may not pull redline in 6th gear though.

[Calkidd]

The most common modification that is done is one DOWN on the front. This is the equivalent to 3 UP in the rear, actually 2.8.

I did the three up in the rear only because there is more strain on the tranny by going down in the front. The front sprocket has to turn quicker to achieve the same revolution in relationship to the rear sprocket.

[blayne]

i know this has been covered before slightly but you yanks have a 43 on the rear don't you?

i definately have a 42.

so what's the best combo without the 520 convo. 15/44 or 15/45?

ps in answer to the first Q, in my opinion i went the one down on the front when i got a service down and it cost me bugger all

[Big Kahuna]

Cheapest way to go is one down in front, it costs around $25 and you'll be able to still use your same chain.

I wouldn't worry about using a smaller sprocket on the front. I've used one for years and years without any problems to the tranny. Don't let that ol' Calkidd scare you. :)

[cornfedwhitey]

Cheapest way to go is one down in front, it costs around $25 and you'll be able to still use your same chain.

I wouldn't worry about using a smaller sprocket on the front. I've used one for years and years without any problems to the tranny. Don't let that ol' Calkidd scare you. :)Ok, you sure? B/c I just ordered a 15 tooth from www.indysuperbikes.com for $29.00 shipped, Vortex brand. Im not looking for a huge difference, but something to add to feel some different low/mid range.

[Big Kahuna]

You will definitely notice an immediate difference in low end acceleration.

[Calkidd]

Don't let that ol' Calkidd scare you. :)Actually, if I wasn't already changing the chain I would have gone with the front sprocket change over.

Plus, I got a real good deal on the kit.

[CBRrider95]

hey.... im running 15/45 on my bike and its a 530 ...... i have have no problems... i tell you whay though.... you better be squeezin the tank to hold on.. it loves to wheelie... and i love it.. but tops out at about 150, but i am always on the freeway or just in town i never get the chance to go that fast very often....but i did keep my 16 for the front incase i ever want to change it back..

[Calkidd]

Check out this website it has table on gear ratios.

http://www.parts411.com/acb/webpage.cfm?&DID=9&WebPage_ID=40

[Tifosi]

My 2 c.

I ride both on the open road and on the track. I never do traffic.

I use 16-44 on the open road 'cause I get best top end and then 15-44 on the track beacuse it's the cheapest and easiest thing to do to get better acceleration.

[66droptop]

Don't even bother. I'm faster now. You may take back that title for a month, maybe two, but then I'll yank it right back until you sack up and go FI. Which will be never, because you've got those itty bitty balls and mine go clank-clank when I walk.

Bolt on, cammed, and sprayed 900 > you

:p

[jaket]

"I use 16-44 on the open road 'cause I get best top end and then 15-44 on the track beacuse it's the cheapest and easiest thing to do to get better acceleration."

yep, this is my plan too, I have -1 now, but want to gear it more. It's just too exhausting to clutch it up now. I do clutch it up always, but this -1 is still too damn high gearing. Probably -1 +2 is good compination. and I can use the stock front for touring and for longer journeys.

When I get renthals at some point, I go 15/46, and also get 16 front for longer journeys.

Basicly I love to stunt lower speed stuff and still keep the bike for the street usage and trackdays too. Stock gearing is way overgeared for the track, hell at lower speed tracks you can only use first 3 gears.

-1 is always the best power/acceleration/wheelie mod there is, it's the first thing you should do to any bike. Period. If you want more, then gear it more.

Jake.

[cornfedwhitey]

"I use 16-44 on the open road 'cause I get best top end and then 15-44 on the track beacuse it's the cheapest and easiest thing to do to get better acceleration."

yep, this is my plan too, I have -1 now, but want to gear it more. It's just too exhausting to clutch it up now. I do clutch it up always, but this -1 is still too damn high gearing. Probably -1 +2 is good compination. and I can use the stock front for touring and for longer journeys.

When I get renthals at some point, I go 15/46, and also get 16 front for longer journeys.

Basicly I love to stunt lower speed stuff and still keep the bike for the street usage and trackdays too. Stock gearing is way overgeared for the track, hell at lower speed tracks you can only use first 3 gears.

-1 is always the best power/acceleration/wheelie mod there is, it's the first thing you should do to any bike. Period. If you want more, then gear it more.

Jake.Thanks man. Install goes in this Wednesday. I will update ya on the performance difference.

[66droptop]

You're like the little brother that annoys everyone with constant questions. Constant DUMB questions. Bust out the calculator and figure it out yourself. What will be a larger number? 1/16 or 2/43?

Sorry. I'm just having fun busting your balls on this forum tonight. :p

[CBRrider95]

15/45 is cool for in town but long journey's i use my stock 16 on the front.. it helps quite a bit.. great for long trips.. better gas milage and it doesnt make me nervous about the higher RPM's..

[cornfedwhitey]

You're like the little brother that annoys everyone with constant questions. Constant DUMB questions. Bust out the calculator and figure it out yourself. What will be a larger number? 1/16 or 2/43?

Sorry. I'm just having fun busting your balls on this forum tonight. :pYea, b/c I have asked two questions pertaining to a slip on and sprocket.

Here, bust this ball.

[Opposingrealities]

Just to chime in here. Only going one down in the front on a 954 will result in your chain rubbing quite a bit on your swingarm......this was only a problem with the 954's I believe, if you can really call mods a problem. Also it is always better to replace all your sprockets and chain at the same time or you will wear down you new sprocket quickly. Of course I sure someone will contest.

[Calkidd]

Of course I sure someone will contest.Well, since you haven't been around a while, I will leave you alone.... :D

[cornfedwhitey]

Just to chime in here. Only going one down in the front on a 954 will result in your chain rubbing quite a bit on your swingarm......this was only a problem with the 954's I believe, if you can really call mods a problem. Also it is always better to replace all your sprockets and chain at the same time or you will wear down you new sprocket quickly. Of course I sure someone will contest.Well, I was looking for a inexpensive mod to increase low end punch. Not that I have any issues with getting the front wheel up. If it shows to much rubbing on the swingarm I will just take it off and sell it used to someone..**shrugs** I plan on replacing the chain at the same time, but not going 520. Staying 530 for the OE look ;)

Is this only on the 954? Am I going to experience issues?

[jaket]

I don't think so. Maybe if you drive 30000miles with it.

Just check the chain quide sometimes.

[Opposingrealities]

Is this only on the 954?
Yeah as far as I understand. Because of the similarity of the 954 and 929 swingarm, I would expect the problem to happen with them also but I have heard no word on them. To Jaket, it really is not an issue of milage but an issue of clearance. With a 43 rear sprocket, a 15 will be too small to clear the swingarm, while there is a plastic cover on the arm it will only absorb so much abuse. I guess the issue comes down to also how may miles you put on the bike with your new set-up. If you are like me and average around 8000 miles a season, I would be careful of such a change. But if you are the average sport rider and only get 1000-2000 miles a season, you will probably be fine. Just be mindful of your new sprocket and keep and eye out for wear :cool:

[cornfedwhitey]

Well, The 15t sprocket finally came in UPS today.. After almost two business weeks. Rob ( 66drop) and I installed it tonight. All I can say is wow.. Who knew a $27.00 mod like that would make such a difference in low end punch and torque..
I used to have to somewhat pump the front end while in high rp.m's to get it up in 2nd., Sheesh.. not anymore :cool:

The only thing that I dislike about it was on the freeway , cruising around 85-90 the RPM's were reading 5900-6100 in 6th gear, which is about 500-1k higher than normal. ENough to make a differnce in gas mileage? Maybe.. Did I buy the bike concerned with m.pg.? Nope. I just need to get used to the higher r.pm sound while driving on the freeway.
Thank goodness I didnt do the up two in the rear as well!

Thanks all for the input.

~Matt

[Blademan]

Oh yeah . . . I love my 15f and 44r. Way different on the power feel. Love it

[Big Kahuna]

Strange you should mention the higher freeway RPM's and gas mileage. Calkidd's been whining about that for some time now. I guess I don't spend enough time on the freeways to notice such a difference. The times that I do ride the freeways I never felt uncomfortable with the RPM's. As for gas mileage, I really haven't notice a big drop. I did however noticed a drop in mileage when I added the slip-on. Not much though, still get around 38-42 MPG depending on the way I'm riding.

Anyway, thanks for fueling Calkidd's fire as I'm sure I'll be hearing about this real soon. :p

[Calkidd]

I Knew It!!!............it Is The Sprocket Change!!!!!!!!!!!!!!!!!

Hah.......

[66droptop]

Rob ( 66drop) and I installed it tonight.
What he mean to say is that he losened the chain while I did the rest. Oh, and he rode the bike to my house to do it in the garage. Team effort though, right? :p It's okay though. I've sprocketed like 489 bikes now. And he boght me my first bear of the night. I told you it was the greatest mod ever.

I heaerd those Erion cams don't have to be degreed and that you can use your stock cam spockets. Should be cake, if you want help. Mine took forfrigginever because we had to dial them in, and we got real particular. For your bike, it should take a night. Maybe too. Hold the chain & sprockets still, break the 2 cam sprocket bolts loose, remove the cams, and install the new ones. Should be good to go. Let me know.