Noisy engines thier not.... - K-Bikes.com - Excellence in Motion
 
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post #1 of 6 (permalink) Old Nov 28th, 2005, 2:49 pm Thread Starter
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Noisy engines thier not....

Hey...... question of the day, does anyone know how the alternator is driven on the KRS/GT? I tried peeking through under the alternator but can't tell.

Of all the threads regarding 'engine' noise that sounded like a box of rocks etc. I have narrowed down 2 noises from my KRS. Eliminating these two noises, I discovered a sweet sounding engine. Just like precision machinery.

Pulling in the clutch lever while engine is idling eliminates one of the noises from the clutch or transmission gears in rotation. Now you will hear the other noise coming from the alternator. Seems the alternator is just cruising along and doesn't have much load. Try pulling an electrical load and you will hear the 'box of rocks' noise has totally dissappeared, leaving a sweet sounding engine. While holding in the clutch, I used high beams, heated grips and touching the brakes drawing a bit of current to put a load on the alternator. Now that you have both hands full, working the throttle now reveals a really sweet precision sounding engine.!!

On my '04 KRS, I believe most of the noise is coming from the alternator drive and not the dry clutch. Try it.... don't let your neighbors see what you're doing tho........

'04 K1200RS- sold
'06 R1150GS Adventure ( Final Edition ) ( Still in Crate) 4-sale
'04 Honda RC51 ( still in the crate!) 4 sale
'08 BMW HP2 Sport #43 (awsome)
'09 BMW HP2 Sport w/ABS #77 ( still in crate)
'10 Harley Davidson CVO Street Glide

Last edited by Lucky88; Nov 28th, 2005 at 6:47 pm.
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post #2 of 6 (permalink) Old Nov 29th, 2005, 1:19 pm
 
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The alternator is directly driven off of an intermediate shaft as shown here.

Look at the generator and intermediate housing pics


Notice the little U shaped thing, item 8 , generally called rubber goobers (tech term)

On the older k bikes they were known to wear out
under constant heavy load and make that racket.

HTH!
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post #3 of 6 (permalink) Old Nov 29th, 2005, 1:58 pm
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Boy, you picked two beauties to eliminate. Should run great without a clutch and alternator
I hope you do succeed. My '04 does sound like a box of rocks at idle. But then so does my '85 K100RT. I figure if the factory is too lazy to fix it in almost 20 years, I would't worry about it. The sound gives the bike "character".
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post #4 of 6 (permalink) Old Nov 29th, 2005, 2:11 pm
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It's nice to hear the motor - gives you confidence it's working!

What's the prob. with the clutch? On cages it's usually the thrust bearing and fork rattling around on the sleeve when making intermittent contact with the rotating clutch cover. Usual fix is to add a spring to pull the bearing back off the cover. This gives longer bearing life as well.



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post #5 of 6 (permalink) Old Dec 7th, 2005, 9:01 am
 
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Originally Posted by eric2
The alternator is directly driven off of an intermediate shaft as shown here.

Look at the generator and intermediate housing pics


Notice the little U shaped thing, item 8 , generally called rubber goobers (tech term)

On the older k bikes they were known to wear out
under constant heavy load and make that racket.

HTH!
Hi Eric,

Have you replaced these before? How complex of a job is it?

I purchased an '01 "box or rocks" last night, and looks like these need to be replaced. I am fairly good at turning a wrench; have been doing most of my own maintenance (valves, TB Synchs, etc.) on oilheads for the last five years
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post #6 of 6 (permalink) Old Dec 7th, 2005, 10:53 am
 
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I haven't had to replace mine but have had the alternator off
earlier K bikes for spline lube. Its held on by 3 allen bolts
on those and I suspect the k12 is the same. Prolly need to take the tank off.

HTH!

Best,

Oh yeah, use a little grease to hold the rubber goobers in for reassembly

Last edited by eric2; Dec 7th, 2005 at 10:55 am. Reason: clarification
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