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Author Topic: Splines. What's the best way  (Read 4383 times)

Offline bikesnbones

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Splines. What's the best way
« on: July 07, 2019, 06:46:38 AM »
Been away for a while having sold my 1100LT but am now considering a K100RS.
I keep reading about the gearbox spline issue and its putting me off.
Can anyone offer words of comfort.
I'm looking at two excellent examples, one with 35,000 miles and the other with a staggeringly low 9,000 miles.
Thanks.
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  • Peterborough UK

Offline Chaos

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  • Mars needs women!
Re: Splines. What's the best way
« Reply #1 on: July 07, 2019, 08:59:33 AM »
what's the best way to do what?  to inspect them you need to pull the rear end off.  They need greasing with a good moly lube about every 20-40,000 miles so theoretically either of the examples you're looking at shouldn't have excessive wear, at least if the odometers are correct.
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline The Mighty Gryphon

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Re: Splines. What's the best way
« Reply #2 on: July 07, 2019, 09:31:00 AM »
A K100RS with only 9,000 miles on it will be an absolute horror show of problems the least of which will be the gear box splines(otherwise known as the clutch splines).

My advice to you is to immediately send the seller's contact information to me by private message and forget about that bike.
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline bikesnbones

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Re: Splines. What's the best way
« Reply #3 on: July 07, 2019, 02:13:57 PM »
Quote from: The Mighty Gryphon on July 07, 2019, 09:31:00 AM
A K100RS with only 9,000 miles on it will be an absolute horror show of problems the least of which will be the gear box splines(otherwise known as the clutch splines).

My advice to you is to immediately send the seller's contact information to me by private message and forget about that bike.

Unfortunately, ultra low mileage at this age will almost definitely mean the 30+ year old grease applied at the factory will have dried up and gone off.
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  • Peterborough UK

Offline Soggz

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  • 2 wheels are better than 4,but 4 wheels,2 bikes...
Re: Splines. What's the best way
« Reply #4 on: July 08, 2019, 03:06:10 AM »
Quote from: The Mighty Gryphon on July 07, 2019, 09:31:00 AM
A K100RS with only 9,000 miles on it will be an absolute horror show of problems the least of which will be the gear box splines(otherwise known as the clutch splines).

My advice to you is to immediately send the seller's contact information to me by private message and forget about that bike.
or me, if I’m closer...
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  • Down in Selwood Forest
  • 1986 K75C, 1982 Honda CX500EC Eurostreetbrat
One More Of These,One Less Of Those...

Offline The Mighty Gryphon

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Re: Splines. What's the best way
« Reply #5 on: July 08, 2019, 12:25:00 PM »
Being as how there is a couple thousand miles of pretty deep water between that bike and my garage, I guess I will have to let it be your cross to bear.
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline Soggz

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  • 2 wheels are better than 4,but 4 wheels,2 bikes...
Re: Splines. What's the best way
« Reply #6 on: July 08, 2019, 03:30:43 PM »
Quote from: The Mighty Gryphon on July 08, 2019, 12:25:00 PM
Being as how there is a couple thousand miles of pretty deep water between that bike and my garage, I guess I will have to let it be your cross to bear.
It would be for the best...
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  • Down in Selwood Forest
  • 1986 K75C, 1982 Honda CX500EC Eurostreetbrat
One More Of These,One Less Of Those...

Offline BlitzenGruv

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  • My first BMW. Been riding old British forever..
Re: Splines. What's the best way
« Reply #7 on: July 08, 2019, 11:52:36 PM »
So, I guess mine, with 32K showing on the clock, will not need attention? LOL
I just hope the local Jap dealer has that Honda lube in stock.
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  • Crossville, TN
  • '92 K100rs, 16v, '71 BSA Lightning, '72 Triumph Bonneville, '72 Triumph Trident
You say I'm schizophrenic, but I don't believe we are.

Offline Soggz

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  • 2 wheels are better than 4,but 4 wheels,2 bikes...
Re: Splines. What's the best way
« Reply #8 on: July 09, 2019, 03:27:22 AM »
Too be honest, any bike that old with that few miles on, will probably need a fair amount of work on it, as a lot of the rubber parts will be close to perishing, and a fair few of the electrical connections, could require a decent amount of attention, I would imagine.
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  • Down in Selwood Forest
  • 1986 K75C, 1982 Honda CX500EC Eurostreetbrat
One More Of These,One Less Of Those...

Offline david32knyte

  • Motobrick Curious
  • Posts: 34
Re: Splines. What's the best way
« Reply #9 on: July 20, 2019, 05:51:05 AM »
RE:  K100RS Mileage

I see a few low mileage 2V Ks coming up - But in my experience this often means the speedo has spent 80% of it's life asleep.

Take the speedo apart - fix it - It will work fine for 6 months - then dies.

So clock mileage not the greatest indicator of real miles IMO on those early 2 valves.

D
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