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Rear Sprocket TORQUE Issues (2004 R1)

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53K views 95 replies 55 participants last post by  Pinky  
#1 ·
:rant :fork :rant

Hi guys,

I own a 2004 R1, and today I received new 47T rear sprocket for my bike.

So I....

I removed the wheel, removed the sprocket, put new sprocket on and hand tightened it.

Then I looked up the Torque Specifications, for the rear sprocket in the 2004 Yamaha R1 Service Manual.

Manual says 72LBS of torque.

I have never replaced sprocket before so, I trusted the manual, although it did seem very high to me.

I've set my Torque wrench to 72lbs and started torquing, I eneded up screwing up 3 bolts and nuts, so now I have 3 tightened at 50lbs, 2 that nuts started to go around and started to strip the thread, and one is pulled out completely.

The thread in the hub (for the bolt) seems good.

I ordered new bolts and nuts, all 6, should have it by Wednesday next week.

For now it better hold.:rant

Anyway, I am including a picture of the page 4-10 in service manual which clearly shows 72lbs.

I later found out it should have been 28lbs.

:rant :fork :rant
 

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#4 ·
:rant :fork :rant

Man, this sucks but I guess it could be worse.

I will call Yamaha Canada on Monday and see if they will absorb the cost, it's not much ($46CDN Bolts, Nuts, Washers)

But the least Yamaha could do is cover it, after all they screwed up right? Won't hurt to try.

Thanks for the reply.


:rant :fork :rant
 
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C
#5 · (Edited)
i just drip on some thread lock and smack the wrench with a malet a few times. never had a problem yet. not to say i wont. but it's worked thus far.
still sucks though man. would a bike shop get you the nuts and bolts for free since the man. says 72??? you'd think yamaha would cover a clear screw up on there part by at least giving you the parts you need at no cost.
 
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R
#7 ·
Eyespy said:
The manual is incorrect, still.
Click to expand...
i guess it's too difficult to correct that page.......

:crash

the best part is that they did update it to include a picture of the new style wheels, and the nstill printed it with the wrong toraue value.

way to go YAMAHA!!!

:2bitchsla
 
#10 ·
Where did you find the real torque specs?
 
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#11 ·
Denver05R1 said:
Where did you find the real torque specs?
Click to expand...

:rant :fork :rant

I didn't actually find real toque specs, I talked to a Tuner that tunes up Superbikes for some of the Privateer guys in Parts Canada Superbike series, and he said he sets it between 28-30lbs on 2004 R1s.


By the way, I got new bolts and nuts, all 6 of each. Will replace them soon.

:rant :fork :rant
 
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C
#12 ·
Yes the manual has some issues it happened to me when I changed the clutch springs. I broke one screw trying to put with the spec torque. I had to replace the clutch boss assy. So do it yourself and tighten it until you think that it wont fall apart running :yesnod
:fork :rock
 
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L
#13 ·
Recalibration

I have a question, I just recently put a 1 tooth down spocket on the front, on my 2004, r1, to improve low end torque and it has tremendously, and my speeo is out of calibration when I am running beside someone doing 70 my speedo reads 85 approx anything I can to recalibrate it or what? thanks.........
 
S
#15 ·
Re: Recalibration

Leanit said:
I have a question, I just recently put a 1 tooth down spocket on the front, on my 2004, r1, to improve low end torque and it has tremendously, and my speeo is out of calibration when I am running beside someone doing 70 my speedo reads 85 approx anything I can to recalibrate it or what? thanks.........
Click to expand...
Hello welcome to the forum,did a search for ya~http://www.r1-forum.com/forums/sear...ch.php?action=showresults&searchid=1051469&sortby=lastpost&sortorder=descending

Are you by chance from southern al.?
 
B
#71 ·
Leanit said:
No I am in east central...............talladega county
Click to expand...
hey im new to this sight. I seen ur from talladega, just as i am originaly. :fork:forkIm in new orleans but come home every 3weeks or so. Im changing my sprocket now and want to know the real torque specs on the rear and front bolts. hey, leave a contact and we could ride sometime I arrive in.
 
T
#20 ·
I just tighten everything by hand too. When I did my sprockets, I just tightened the front really tight until I got a flat side of the nut to line up with metal tab you have to bend down. When I did the rear, I just tightened them like lug nuts with the cross pattern and did it little by little to get them evenly tightened. I tightened the rear axel to the torque specs once, and it just seemed ridiculously tight, and I would like to be able to get the axel off with the tools in the kit and not need a breaker bar, so now I just tighten it as good as I can with the wrech in the tool kit, because if I got it on with that wrench, I should be able to get it off with it too.
 
G
#21 ·
When will you engineering type learn that some things arent that serious

ITS ONLY A SPROCKET

i repeat

ITS ONLY A SPROCKET

My racin partna is always houndin me about torque specs and hes in the pits at the track constantly and im gonna tell you like i tell him
IM NOT TRYIN TO HEAR THAT BULL ZIP (no offense)

Next time just tighten the bolts up and leave the manual for more important things like cam sprocket alignment.
 
E
#23 ·
28-30 lbs of torque at what rpm? 13500 rpms?? My biggest issue with this bike is the torque on the bottom in first gear. It's the way it's geared, designed to run WOT on a track. Instead of sprockets I was thinking HD clutch/slipper clutch, racing clutch lever, maybe NOS. Right now I have slipon exhaust, power commander, air filter and keep it juiced with racing octane boost.
 
#24 ·
eros said:
28-30 lbs of torque at what rpm? 13500 rpms?? My biggest issue with this bike is the torque on the bottom in first gear. It's the way it's geared, designed to run WOT on a track. Instead of sprockets I was thinking HD clutch/slipper clutch, racing clutch lever, maybe NOS. Right now I have slipon exhaust, power commander, air filter and keep it juiced with racing octane boost.
Click to expand...
Are you joking???:confused:
 
#25 ·
eros said:
28-30 lbs of torque at what rpm? 13500 rpms?? My biggest issue with this bike is the torque on the bottom in first gear. It's the way it's geared, designed to run WOT on a track. Instead of sprockets I was thinking HD clutch/slipper clutch, racing clutch lever, maybe NOS. Right now I have slipon exhaust, power commander, air filter and keep it juiced with racing octane boost.
Click to expand...
WTF?
 

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#26 ·
sorry to read You had this problem with the bold and nuts, I think Yamaha should give You the broken parts for free.

But I saw You installed a 47T sprocket instead of the standard 45T...why? More power and bigger acceleration? Doesn't youre bike get very light at the front wheel? My 06 R1 feels pretty light in the front with only 45T on the back sprocket.
 
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