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Native /5 wrote: Careful with those Shinkos on the street, Brad. I had a set on my GS that were fine off road, but de-laminated from hiway speeds of ~80mph.

R65s at altitude don't go 80. A couple years ago we rode from the valley up to Telluride (me colleen and the dog) and for most of the uphill trip I couldn't get over 35 at WOT.

bbelk wrote:R65s at altitude don't go 80. A couple years ago we rode from the valley up to Telluride (me colleen and the dog) and for most of the uphill trip I couldn't get over 35 at WOT.

Telluride is pretty F'ing high, but there's still something wrong if you couldn't go over 35. 50 would be perfectly believable.

Major Softie wrote:

bbelk wrote:R65s at altitude don't go 80. A couple years ago we rode from the valley up to Telluride (me colleen and the dog) and for most of the uphill trip I couldn't get over 35 at WOT.

Telluride is pretty F'ing high, but there's still something wrong if you couldn't go over 35. 50 would be perfectly believable.

Yeah, I'd be looking at the diaphragms.

How was it on the flat? Did it pull well?

justoneoftheguys wrote: How was it on the flat? Did it pull well?

As well as it ever has. It ran fine then and now, the roads were just steep and the air was thin.

But while we are on the subject - I will be spending awhile at high altitude. What do I do to the carburators to make them happy. The bike was very hard to start cold above 8,000 foot

Samatter? You can't find any flat places around where you live?

I was just telling you my experience with those Shinkos. They could be fine off road, just don't trust them at speed.

bbelk wrote:

justoneoftheguys wrote: How was it on the flat? Did it pull well?

As well as it ever has. It ran fine then and now, the roads were just steep and the air was thin.

But while we are on the subject - I will be spending awhile at high altitude. What do I do to the carburators to make them happy. The bike was very hard to start cold above 8,000 foot

You will need to get good at removing the tops of your carburetors and adjusting needle position.
That or swapping out main jets.

When the air gets thin, you need less gasoline to keep the ratio the same.

And while the R65's lesser performance is acceptable in many situations, two-up for touring in the high altitudes is not one of them - even when jetted correctly.

An R60/6 might be the superior motorcycle here.

Experiment with your enrichment circuit control (choke).
Try not using any at all, to just enough to get the engine to catch and then backing it off quickly - but not all the way!
Because of the thinner air, you don't need to be adding any extra fuel to the already rich mix.

I've only had my R65 out to Colorado once, and that was in 1984. I don't remember any real issues.

And don't be afraid to shift down and spin it up.

justoneoftheguys wrote:Experiment with your enrichment circuit control (choke)

Were you typing with your mouth full again Rob?

justoneoftheguys wrote:An R60/6 might be the superior motorcycle here.

How do you figure that?

I would do what the Major said, 3rd gear and 6 grand and it would go up the hill.

That is a lot to haul on an R65 though.

bbelk wrote:But while we are on the subject - I will be spending awhile at high altitude. What do I do to the carburators to make them happy. The bike was very hard to start cold above 8,000 foot

Here is a start: