What grade alloy are DSS's made of

[Real Recognize Real]

My rear sprocket nuts dug a groove into my swingarm, so I'm going to have my welder friend fill it for me. My question is what alloy did Ducati use for the aluminum swingarm? I know very little about welding so if there's any other info I should pass along to him concerning this repair beside the alloy type, I'm all ears.

[Real Recognize Real]

My goggle-fu indicates that Al-6061 is commonly used for motorcycle swingarms. Just need a confirmation about the M900 swingarm.

[COP TZR]

how did that happen??  Didnt you hear or feel anything?

[Real Recognize Real]

how did that happen??  Didnt you hear or feel anything?

I'm going to take a look at the rear wheel this weekend and figure it out before having my friend laying a weld. I noticed my sprocket has a bit more lateral play than before the interference. tbh, I didn't hear anything but my rear tire did seem to "dance" a bit on a morning commute. I can't pinpoint exactly when it happened based upon feel and whatever I felt could have been mistaken for rolling over something slippery imo.

[ducpainter]

Did you recently change a tire?

That groove usually appears when the spacer is in backwards.

Your welder should be fine using 6061.

[Real Recognize Real]

Did you recently change a tire?

That groove usually appears when the spacer is in backwards.

Your welder should be fine using 6061.

DP, I did notice in previous threads that an incorrectly installed spacer can cause this problem. My tire was recently changed and that's when I noticed the problem. Could the groove be caused by a chain that was too tightly adjusted?

If I recall correctly, my friend guessed without knowing the swingarm alloy grade that it's likely that he would use either 4043 or 5356. I've read a little bit of info about both alloys, but do you think that 6061 is the better choice for this application?

When all is done, I plan to have this thing powdercoated, unless there's a problem powdercoating a compromised swingarm.

[ducpainter]

DP, I did notice in previous threads that an incorrectly installed spacer can cause this problem. My tire was recently changed and that's when I noticed the problem. Could the groove be caused by a chain that was too tightly adjusted?

If I recall correctly, my friend guessed without knowing the swingarm alloy grade that it's likely that he would use either 4043 or 5356. I've read a little bit of info about both alloys, but do you think that 6061 is the better choice for this application?

When all is done, I plan to have this thing powdercoated, unless there's a problem powdercoating a compromised swingarm.

Sorry to be slow in replying...been out of town.

I've never heard of a misadjusted chain causing that issue.

I'm betting on the spacer being in wrong.

Both of those alloys are softer, but the swing arm isn't cut through, so this is somewhat of a cosmetic repair.

I'm no metallurgist...go with your welder's instincts.

[Real Recognize Real]

Sorry to be slow in replying...been out of town.

I've never heard of a misadjusted chain causing that issue.

I'm betting on the spacer being in wrong.

Both of those alloys are softer, but the swing arm isn't cut through, so this is somewhat of a cosmetic repair.

I'm no metallurgist...go with your welder's instincts.

No worries at all DP and i'll def post up when everything is sorted.