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Sportster Motorcycle Transmission, Clutch, Primary & Secondary Drive Transmission, Clutch and primary or secondary drive problems, advice, and/or how tos.

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  #21  
Old 16th May 2006
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The 4th gear whine is the only thing that's quieter on my '05 than my '03. It is normal.
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  #22  
Old 27th May 2006
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hi lollypop here in the U/K.i have looked for this site in particular because i did not fit one of my earplugs properly and noticed the forth gear wine more than usual.my bike is a 05 883r and the gearbox has wined from new,i know nothing is wrong due to the design of the gearbox,now i know i iwas right after reading all the comments.my bike runs great and i love it, the wine was the only thing that i had concerns about[mianly on overrun].thanks.lollypop.
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  #23  
Old 27th May 2006
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For 2005 and earlier 5 speeds:

I wonder if the 4th gear noise is more noticeable because of where 4th gear is in the transmission? The gears are installed like this:
front tire
primary case 4 1 3 2 5 belt sprocket
rear tire
You're moving along at a pretty good clip, so the gears are really slinging around, and the 4th gear is closest to the primary side, and the primary case acts as a big drum, and the normal gear noise resonates. When you drop it into 5th, the 5th gear is locked to the mainshaft and it's direct drive, 1:1, and the noise all goes away.

3rd gear on Big Twins with straight cut gears is similarly loud, because 3rd gear is in the middle of the shaft, where it gets the most deflection, and therefore most noise. 3rd is probably not as noisy on an XL because the shafts are not as long as the Big Twin.

That's my theory and I'm stickin to it.

BTW, in case this makes no sense, the noise in 4th gear is normal. Just ride it.

--Chris
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  #24  
Old 30th May 2006
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Thought of one more thing. If you're lugging it, i.e. not revving it out enough, it will be noisier than if you keep the RPMs up.

--Chris
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  #25  
Old 31st May 2006
lollypop lollypop is offline
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hi ya all,lollypop here in the U/K.been on the look out for this problem as my 883R is doing it[got to admit has done it from new more or less].anyway went to the dealers today[31 5 06]and asked the tech about it,he said forget it!!use it!!after 10grand it will just be the same, ITS NORMAL FOR A SPORTY WITH STRAIT CUT GEARS, thy all do it to a sertain extent.so if gear change is good and the bike is running smooth,ride&enjoy safe.hope this helps.tara for now lollypop in the U/K.
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  #26  
Old 31st May 2006
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AND THE ANSWER IS!
The reason 4th is so loud is that it is the only gear that spins every gear
on both the main shaft and the counter shaft. No other gear spins'em all.
If you look in the field manual under transmission, they show you with color
coding which gears are engaged in each of the five speeds.
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  #27  
Old 21st August 2006
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Default 4th gear whine

My 2003 883 does it as well, lets me know one more into top!
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  #28  
Old 24th September 2006
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DAMN I FOUND OUT 2006 SPORTY,S ARE THE SMOOTHEST AND QUIETEST OF ALL BECAUSE OF HELICAL CUT GEARS (A GUY I TALKED TO RECENTLY SOLD HIS 04 BECAUSE OF GEAR WHINE AND VALVE SEAL ,LEAKY ROCKER BOX AND BOUGHT A 2006 NOW HE IS ONE HAPPY HARLEY OWNER) i hate that guy !!!!!
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  #29  
Old 10th October 2006
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Question Transmission whine

My '07 1200R has a high pitched "yowl" as opposed to a "whine" that's especially noticeable if you're riding next to a wall. I can't hear it on the open road, but it is present if I'm next to a flat walled cage. Normal or not normal? Sorry Howie.
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  #30  
Old 10th October 2006
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Quote:
Originally Posted by doxbike
My '07 1200R has a high pitched "yowl" as opposed to a "whine" that's especially noticeable if you're riding next to a wall. I can't hear it on the open road, but it is present if I'm next to a flat walled cage. Normal or not normal? Sorry Howie.

Normal...Walls, tunnels, ETC. all exaggerate sounds. Don't pay any attention.
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