Random question...

JDBeretta · Jul 1, 2015

...and probably because I'm a total newb to Ducati.

Why is the inside axle diameter larger on the drive side than on the other side? When ordering pins for single sided swing arm (my 1299s) the pins are different sizes. And low and behold... They are! Whoa.

Willing to accept all flaming and proclamations of my ignorance...

pigpenracing · Jul 1, 2015

Either a ..... designed it?
Or someone smarter than us designed it?
Not sure which is correct?

JDBeretta · Jul 1, 2015

Hoping the former, likely the latter.

ScrapperX · Jul 1, 2015

Are you talking about pins for a stand? mine are the same size

JDBeretta · Jul 1, 2015

ScrapperX said:
mine are the same size

Don't even.... [emoji23]

bradp51 · Jul 2, 2015

JDBeretta said:
...and probably because I'm a total newb to Ducati.

Why is the inside axle diameter larger on the drive side than on the other side? When ordering pins for single sided swing arm (my 1299s) the pins are different sizes. And low and behold... They are! Whoa.

Willing to accept all flaming and proclamations of my ignorance...

On the 1199 Pitbull stand they are the same. Axle inner Dia is the same.

JDBeretta · Jul 2, 2015

bradp51 said:
On the 1199 Pitbull stand they are the same. Axle inner Dia is the same.

Oh weird. I thought I remember the option of buying the second pin for the 1199 as well, when I was looking for the 1299. This was for the Pitbull stand also.

lamb00j · Jul 2, 2015

bradp51 said:
On the 1199 Pitbull stand they are the same. Axle inner Dia is the same.

Oh man, not this debate again.....

duckyduc · Jul 2, 2015

i installed the rear axle slider a few weeks back on the 1299, they appears to be same diameter, i can double check

JDBeretta · Jul 2, 2015

I have the pin for the left side (chain side) and it will not go into the right side.

JDBeretta · Jul 2, 2015

lamb00j said:
Oh man, not this debate again.....

Didn't know this was akin to "break in procedure" or "what oil to use". [emoji23]

lamb00j · Jul 2, 2015

JDBeretta said:
Didn't know this was akin to "break in procedure" or "what oil to use". [emoji23]

oh it is... seems like most ask if one pin will fit both sides, more along those lines... you just worded a bit differently

ScrapperX · Jul 2, 2015

JDBeretta said:
I have the pin for the left side (chain side) and it will not go into the right side.

Make sure the retaining ring for the Axle nut is not protruding all the way through. I have the same pit bull stand that I used on my 1199 for my 1299S

JDBeretta · Jul 2, 2015

ScrapperX said:
Make sure the retaining ring for the Axle nut is not protruding all the way through. I have the same pit bull stand that I used on my 1199 for my 1299S

So weird. I'll double check, but I'm sure that retainer is not protruding. It's not even in those holes. Good thing I paid $400 for a first "service"...

Styler · Jul 2, 2015

JDBeretta said:
So weird. I'll double check, but I'm sure that retainer is not protruding. It's not even in those holes. Good thing I paid $400 for a first "service"...

Actually, the axle could be the same internal diameter; but the Pit Bull pins are definitely slightly different in diameter. You can sometimes get the larger Pit Bull pin to work both sides; however, if the retaining clip protrudes through the hole in the axle like it is supposed to, then you are screwed. This is a real pain is the ... when you are trying to work with tire warmers because you have to push the retaining clip out in order to get the larger Pit Bull pin into the axle. That is why Pit Bull offers two different size pins, depending on whether you are using the left sided or right sided stand.

I use a left-sided stand and got fed up because I had the larger Pit Bull pin that was meant for the right sided stand. My solution was to take the larger pin and skim 2.5 mm off its diameter using a lathe.

So, you are not crazy. This does illustrate that the folks at Pit Bull know what they are doing when they offer slightly different pins depending on if you have a left or right-sided stand.

Charliem90 · Jul 2, 2015

JDBeretta said:
So weird. I'll double check, but I'm sure that retainer is not protruding. It's not even in those holes. Good thing I paid $400 for a first "service"...

You're not dreaming. The internal diameter of the axle is smaller (about 2mm) on the chain side.
Easy for anyone to verify by simply taking a bright light and looking inside the axle.Or simply putting a ruler up to each end and measuring the diameters. Pretty obvious.

JDBeretta · Jul 2, 2015

Charliem90 said:
You're not dreaming. The internal diameter of the axle is smaller (about 2mm) on the chain side.
Easy for anyone to verify by simply taking a bright light and looking inside the axle.Or simply putting a ruler up to each end and measuring the diameters. Pretty obvious.

Larger on chain side...

Styler · Jul 2, 2015

Charliem90 said:
You're not dreaming. The internal diameter of the axle is smaller (about 2mm) on the chain side.
Easy for anyone to verify by simply taking a bright light and looking inside the axle.Or simply putting a ruler up to each end and measuring the diameters. Pretty obvious.

And now the real question: "Why?" Very curious.

Charliem90 · Jul 2, 2015

JDBeretta said:
Larger on chain side...

Incorrect. Chain side is ~41mm, wheel(?) side is ~43mm.

Styler · Jul 2, 2015

JDBeretta said:
Larger on chain side...

From what I recall; the chain side has the smaller diameter.

Random question...

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