Wear Shock!

[Soggz]

Ok guys.
At the start of this year, as some may know, I had some new a spline set welded onto my prop, as the splines were funked!
Today, I disassembled the rear end just to see how much wear was evident at 1050 miles, from when I got the bike on the road from 1st June.
The splines were greased with moly grease, and even moly powder dust was added.
The final drive splines weren’t great, but usable. Here’s the results.
I have ridden the bike fairly hard, so it’s probably a bit my fault and a bit of mixing new spline with old. On reassembly, I am trying the Chris Harris silicone plug method to help relieve lubrications creep.
I also mixed a stronger recipe of grease and moly powder, this time.

[Scott_]

a bit of mixing new spline with old.

Yep, that pretty much covers it.
The new female half does you no more good than the old one without a matching new set of male splines. Your "contact area" is only as good as the available surface area of the male splines(and matching female half), which in your case is not very good.(though others have been worse)

Now if you were to put a new male spline into what remains of the shaft, you will soon wear out the male one to match the male you removed(as you have damage the contact area of the female half).......
Your only real true resolution is to replace both, at the same time.

[Soggz]

Yep, that pretty much covers it.
The new female half does you no more good than the old one without a matching new set of male splines. Your "contact area" is only as good as the available surface area of the male splines(and matching female half), which in your case is not very good.(though others have been worse)

Now if you were to put a new male spline into what remains of the shaft, you will soon wear out the male one to match the male you removed(as you have damage the contact area of the female half).......
Your only real true resolution is to replace both, at the same time.

Yes. A lesson, learnt.But I am surprised on the wear in such a short time.
So how many miles do you think is left between the two?

[Soggz]

Just as a comparison. New ones after 1050 miles, and the old one as when I first got the bike.

[Soggz]

greetings...

i am proficient in american english... as learnt at the university of cambridge... and practiced acrosst all corners of this flat earth...

just ride... getts a lorry in que and not worry about it...

j o

lol. I’m not worried, Johnny. I have a AA breakdown card. It was just a bit of an experiment to highlight the wear factor of new mixed with old splines. Hope this is helpful to people. It would be nice to get a better rear drive, as I can get the drive shaft splines welded on for free.

[Soggz]

greetings...

just ride... getts a lorry in que and not worry about it...
Not quite sure what you mean, Johnny. You ever do English at school?

[K1300S]

think of the problem as a phillips head screw.

you try to get it out with a phillips head screw driver that is too small.  it strips out the head of the screw a bit.  so you get a new screw, but use the same too small driver.  guess what will happen again?  yep, ya strip out another screw.

[Soggz]

think of the problem as a phillips head screw.

you try to get it out with a phillips head screw driver that is too small.  it strips out the head of the screw a bit.  so you get a new screw, but use the same too small driver.  guess what will happen again?  yep, ya strip out another screw.

Yes. Good example. Finding a newer rear final drive is a bit of a problem. Anyone know of one?

[volador]

Yes. A lesson, learnt.But I am surprised on the wear in such a short time.
So how many miles do you think is left between the two?

Should ask Past-my-Prime ?  http://www.motobrick.com/index.php/topic,12817.0.html

[volador]

AS an experiment try using a grease like Staburags NBU 30 PTM.
See if next 1000 miles yields different result?

[Soggz]

Should ask Past-my-Prime ?  http://www.motobrick.com/index.php/topic,12817.0.html

I think yours is the model with more splines than mine.

[volador]

Yours, his, minez, I see Z=20 splines all around

PM sent

[Soggz]

Yours, his, minez, I see Z=20 splines all around

PM sent

yes, sorry. I was distracted.
Apologies.
I see what you mean. I’m guessing I have a few more miles left then before stranding will happen?

[volador]

10k +

[Soggz]

10k +

Ok, yes, if driven carefully, I’m guessing.
The link for the final drive. Is it a drum brake model? As I couldn’t see the acutuating arm orifice.

[Laitch]

10k +

It seems at least half of the width of the teeth has been eroded in 1000 miles. Getting more than another thousand miles out of that shaft would be good luck.

[Soggz]

It seems at least half of the width of the teeth has been eroded in 1000 miles. Getting more than another thousand miles out of that shaft would be good luck.

Not looking good then...

[Soggz]

Ok. Conflicting answers, then. So, is it any good or not?

[johnny]

greetings...

look... i deal in reality... not grandiose delusions...

when i said to getts a lorry in que and not worry about it... i meant it...

if you gonna ride it like that you oughtta be prepared to make the walk of shame or call a flattbedd wrecker... its that simple...

j o

[Soggz]

Ultimately then, I need another final drive and another set of splines!

[Soggz]

Or sell it to some other guy...

[Soggz]

when i said to getts a lorry in que and not worry bout it... what does that mean ffs?

[Laitch]

when i said to getts a lorry in que and not worry bout it... what does that mean ffs?

It means have a flatbed truck lined up to haul your moto off the roadway when the driveline fails, but in the meantime enjoy the ride until the inevitable failure occurs.

[Soggz]

It means have a flatbed truck lined up to haul your moto off the roadway when the driveline fails, but in the meantime enjoy the ride until the inevitable failure occurs.

Ah,ok.
I have trouble understanding Johnny, as I’m not sure if he is of this world.

[Soggz]

Ah,ok.
I have trouble understanding Johnny, as I’m not sure if he is of this world.