Anyone own a 690 Duke?

[Orson]

I'm wondering how many miles before they need a top end rebuild?

[R.Markus]

Nobody probably knows yet on the 690. For the 640 LC4 engines it should be about 36k miles.

[Orson]

Nobody probably knows yet on the 690. For the 640 LC4 engines it should be about 36k miles.

that is acceptable  

[Rincewind]

I would like to own one!    

[R.Markus]

I would like to own one!    

They are really cool looking, but I still would prefer the Duke II 640.

[Rincewind]

They are really cool looking, but I still would prefer the Duke II 640.

Care to elaborate?  

[R.Markus]

Care to elaborate?  

I've always liked the way the Duke II looks. Given the choice I would opt to find a used one instead of the 690. There's no mechanical reason other than I heard the 690s are finnicky about the oil used in them.

[Rincewind]

that is acceptable 

Really?  Sounds like a joneser to me, unless it is an easy task.

[R.Markus]

Really?  Sounds like a joneser to me, unless it is an easy task.

It's not particularly easy on a four stroke (compared to a two stroke) and it ain't cheap.

[Orson]

"If" I had one, I reckon I'd be lucky to get anywhere near 10,000 miles per year on it, so 36K would probably translate to approximately 4 years