Flat spot at 85 mph

[Tabasco]

I was was out flogging the bitch yesterday through some beautiful mountain roads at elevations in excess of 8,500 ft and as high as 9,500.

I never felt this before but when really pouring the coals to it I found a slight but noticeable flat spot in power precisely at 85 mph. I was going through 85 in 3rd and 4th gears depending on the situation and it did not matter which gear.

After passing through it, the thing goes into warp drive almost as if saying here is your warning, hold on. Going through a 100 in 4th really makes one wonder what the extra gears are for.

Has anyone else noticed this?

 

[richie]

I was was out flogging the bitch yesterday through some beautiful mountain roads at elevations in excess of 8,500 ft and as high as 9,500.

I never felt this before but when really pouring the coals to it I found a slight but noticeable flat spot in power precisely at 85 mph. I was going through 85 in 3rd and 4th gears depending on the situation and it did not matter which gear.

After passing through it, the thing goes into warp drive almost as if saying here is your warning, hold on. Going through a 100 in 4th really makes one wonder what the extra gears are for.

Has anyone else noticed this?

Of course not, thats way over the legal limit

 

[ovenpaa]

Never experienced this however my typical altitude is more around the 150 to 300 feet mark. 85 mph is coming up for the rev limiter in third and at that point it is pulling like a train, and yes I do bounce mine on the limiter in third, fourth and fifth sometimes but have never managed/tried for it in sixth.

 

[oblertone]

Surely ...

... if you're 'feeling' the same in two different gears it means two different engine speeds, therefore it's not likely to be a fueling glitch which is the prime cause of a flat-spot ? The only other reasonable explanation is electrical; or maybe it's your ego getting caught in the wind

 

[Loiq]

the only flat spot is my bottle...

 

[FlyLow]

I was was out flogging the bitch yesterday through some beautiful mountain roads at elevations in excess of 8,500 ft and as high as 9,500.

I never felt this before but when really pouring the coals to it I found a slight but noticeable flat spot in power precisely at 85 mph. I was going through 85 in 3rd and 4th gears depending on the situation and it did not matter which gear.

After passing through it, the thing goes into warp drive almost as if saying here is your warning, hold on. Going through a 100 in 4th really makes one wonder what the extra gears are for.

Has anyone else noticed this?

Yes, I have the same problem. I suspect that a coil or spark plug is at fault.