Warm start timing chain clatter

[LarryJa]

Lately, I've noticed an unusual anomaly on my bike.
When I start up the bike, after a good ride, when it's been set on the sidestand for a bit, but still hot, the timing chain will clatter for a good while(up to 20 sec.). Then, as oil pressure works the tensioner out(?), everything quiets down to normal.
The bike does not do this on cold starts, first thing. However, whenever I lay the bike up in the garage, I always put it on the centerstand.
My 2013 SE has over 60k miles on it & had the head recall done early in it's life.
It's interesting, to me, that the cam chain tensioner & guides are only loose on hot restarts, after the bike has been on the sidestand for a while.
I'm using Castrol 4T full synthetic 10W50 oil.
Any ideas what's going on?

[Saddle Tramp]

Maybe try putting your Trophy on the centerstand while hot, and see if you get the same results. If not, I would probably attribute the noise on start-up to oil draining to one side of the engine while at rest.

[janfmiller]

My '13 did this as well. 

I only put it on the centerstand when I check oil or tire pressure or work on it.

It took forever to convince the dealer to replace the cam chain tensioner. 
Once that was done, problem solved.

My '13 has 88,000 miles on it now, strong as ever...

[earthman]

Originally Posted by janfmiller

My '13 did this as well. 

I only put it on the centerstand when I check oil or tire pressure or work on it.

It took forever to convince the dealer to replace the cam chain tensioner. 
Once that was done, problem solved.

My '13 has 88,000 miles on it now, strong as ever...

Out of interest, what mileage had the bike covered when the tensioner started to play up?

[LarryJa]

For mine, IDK. I only got the bike about 2000 miles ago.
I don't have audible experience before that, just documentation on the head recall from PO.

[LarryJa]

I am still baffled as to why it does this on hot restarts only.

[janfmiller]

Originally Posted by earthman

Out of interest, what mileage had the bike covered when the tensioner started to play up?

Mine did it from within the first few weeks from new, under 2000 miles for sure.  At the first checkup I asked about it, and got a 'keep an eye on it' answer; they had replaced the head and I expected the CCT to be replaced as well.  Nope ( and they didn't replace the air cleaner either, none in stock!)

At 20K I made a huge amount of noise about it, it was way more evident at cold start and they promised they'd pay attention.  When I picked it up, just before leaving on a trip, the 'tech' apologized and admitted he'd never done that until just before I arrived, and agreed the noise was a bad CCT, but they had none is stock.  They ordered one, and I had to return after my trip to have it installed.  No problem since.

[Coconut]

I am still baffled as to why it does this on hot restarts only.

The Cam Chain tensioner is pressurised by engine oil, and when hot the oil is thinner,
so it may drain past any internal seals more easily than when the engine is cold, and the is thicker.