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Buell Forum » 1125R Superbike Board » Archive through August 08, 2011 » Changed Gearing to CR Rear sprocket on my 2008 R « Previous Next »

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Methyman
Posted on Wednesday, July 27, 2011 - 06:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I ordered the over sized pulley, CR belt, rear sprocket and installed last night. I rode the bike today, all I can say is WOW it is a different bike. I ride the streets about 95% and the bike has better acceleration due to the gearing. I have to send my Erik Buell Racing ECU back to be re calibrated for the gear ratio change. For my kind of riding I felt the R was a over geared for the streets so I went with the CR gearing with my stock swing arm. I have owned the bike since March of this year and loving it!

Matthew
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Nillaice
Posted on Wednesday, July 27, 2011 - 08:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

it is pretty nice. i went all in and swapped swingarms too.
looking back now, i may not have spent teh extra $ if i were to do it agian
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Methyman
Posted on Wednesday, July 27, 2011 - 09:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I honestly did not think it would make that much of a noticeable difference. I didn't want to spend money on a swing arm if I didn't have to. I can roll in the throttle at 2500 and the bike just takes off, no lugging at all.
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Avc8130
Posted on Wednesday, July 27, 2011 - 11:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What oversized pulley?
ac
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Ratbuell
Posted on Wednesday, July 27, 2011 - 11:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The stock CR pulley is MUCH larger than the R pulley. It reduces the gearing overall by ...damn... I can't remember. Old age sucks!

Is it 12%?

Regardless, I MUCH prefer the CR gearing to the R for real-world riding. Which is probably one reason why I own a CR...and not an R : )
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Avc8130
Posted on Wednesday, July 27, 2011 - 11:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yeah, I know all about the gearing difference.

When I read the original post, I get the idea that the poster has a different idler pulley. I thought this is what he meant by "oversized pulley" since I assume he is calling the rear pulley the "sprocket".

ac
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Greerstyl
Posted on Wednesday, July 27, 2011 - 11:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How many teeth was the stock belt? And what size belt did you have to buy?

Thanks
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Avalaugh
Posted on Thursday, July 28, 2011 - 05:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Do you really need that much more low down grunt ?? Mine with E BR ECM takes off from 35mph in 4th gear ? Had thought about trying the CR pulley but my front wheel spends enough time in the air as it is ?
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Methyman
Posted on Thursday, July 28, 2011 - 06:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am using the stock pulley till the belt stretches some then I can used the over sized pulley, custom made.

CR - G0500.1ATA BELT, DRIVE Retail Price:$175.00
CR - G0400.1ATB DRIVE SPROCKET Retail Price:$140.00






pulley
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Methyman
Posted on Thursday, July 28, 2011 - 06:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

on the bike

pulley 1
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Avc8130
Posted on Thursday, July 28, 2011 - 08:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Avalaugh,
I have both a CR and an R. It might be tough to get, but on the street I really do prefer the CR gearing. It allows you to run "a gear high" in most situations around my area.

Cruising backroads ~50 is much nicer right around 5k in 3rd on the CR than it is at 6k in 2nd on the R or 4k in 3rd.

I don't need to do 140+, heck I don't need 110+ on my CR...EVER. The torquier gearing is sweet.

Methyman,

That pulley looks great. How did you come up with the desired O.D.?
ac
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Methyman
Posted on Thursday, July 28, 2011 - 03:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I got it from one of the members on here. If you want I can give his information. Send me a pm and I will give it to you. He is a great and honest guy.

Matthew
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Froggy
Posted on Thursday, July 28, 2011 - 04:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


quote:

Do you really need that much more low down grunt ?? Mine with E BR ECM takes off from 35mph in 4th gear ? Had thought about trying the CR pulley but my front wheel spends enough time in the air as it is ?




I agree. I have both a R and CR, I prefer riding the R as the taller gearing feels right. Going down the Dragon, 2nd on the CR was too short, and 3rd on the CR was too tall. Going down it on the R, I left it I believe in 2nd just about the entire time and it was perfect. Also riding the CR over 50mph is a chore compared to the R, partly due to the gearing. One of these days I am going to accidentally break my shifter trying to find 7th on it!

I do understand the desirability of the shorter gearing, but for me I honestly think even the R gearing is too short.
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Milezero5
Posted on Thursday, July 28, 2011 - 04:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

how would one switch from cr gearing to r gearing, I hate to cruise on the interstate with my cr and soon I will have to be on it more often, it sometimes feels way to short.
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Avc8130
Posted on Thursday, July 28, 2011 - 04:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I regularly cruise 75 mph plus on my cr. Sure the motor is above 5k, but it doesn't seem to care to me. I find it easier to ride in the meat of the power at reasonable street speeds with the shorter gearing. On the track, the r is perfect.
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Rogue_biker
Posted on Thursday, July 28, 2011 - 07:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

At highway speeds my R already feels like it is in the meat of its powerband or at least the meat of its torque curve. When I wack the throttle open in 6th gear at 70 mph, she just goes!
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Avc8130
Posted on Thursday, July 28, 2011 - 08:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Rogue,
While that may be true, my cr takes off from 70 harder :-)
Ac
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Father_of_an_era
Posted on Saturday, July 30, 2011 - 12:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Oh no it does'nt! Lol
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Dannybuell
Posted on Saturday, July 30, 2011 - 11:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I prefer having shorter gearing than other Buell models, I have an S1 and a CR. 80% of my riding is urban, this fits my needs well.
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