Upshifting speed
#1
Upshifting speed
I read the manual about the adviced upshifting speeds.
I know the bike gives its best around 3500 rpm, but I'm accustomed to 4 cylinders engines, and with a twin cylinder the sound for any given rpm is apparently that of a 4 cylinder at half that revs. So I have some problem to "hear" correct rpms. I don't want to mount an rpm meter. So, Since I've read many times that the adviced speed for upshift on the manual are far too low, what would be the correct speed to upshift at each gear on a 07 Dyna?
I know the bike gives its best around 3500 rpm, but I'm accustomed to 4 cylinders engines, and with a twin cylinder the sound for any given rpm is apparently that of a 4 cylinder at half that revs. So I have some problem to "hear" correct rpms. I don't want to mount an rpm meter. So, Since I've read many times that the adviced speed for upshift on the manual are far too low, what would be the correct speed to upshift at each gear on a 07 Dyna?
#2
RE: Upshifting speed
If you read the speeds in the manual, they will be OK. Maybe add a few miles per hour to each shift if you want to haul ***. Add less in the lower gears (1 & 2) and more in 3 thru 5.
You cannotuse the sound of a four cylinder to compare to a v-twin. Most of today's 4cyl. engineshave overhead cams and are made to rev higher than your Harley.Consequently the audible time to shift will be higher. Overhead cam engines generally run to higher rpm's quieter than overhead valve engines.There really isn't a comparison or common ground. Maybe a VW beetle would work for a 4 cyl. comparison!
Adding a tachometer is not a bad idea. Revving till you hear breaking metal is not a good idea.
You cannotuse the sound of a four cylinder to compare to a v-twin. Most of today's 4cyl. engineshave overhead cams and are made to rev higher than your Harley.Consequently the audible time to shift will be higher. Overhead cam engines generally run to higher rpm's quieter than overhead valve engines.There really isn't a comparison or common ground. Maybe a VW beetle would work for a 4 cyl. comparison!
Adding a tachometer is not a bad idea. Revving till you hear breaking metal is not a good idea.
#3
RE: Upshifting speed
ORIGINAL: ricoman
Revving till you hear breaking metal is not a good idea.
Revving till you hear breaking metal is not a good idea.
When shifting just shift by ear or butt. Ear ... you can hear when the revs start to climb. And for the butt ... you can feel when the motor stops pulling. When shifting hard you can take some sport bike riders by surprise that we can haul butt too.
#5
RE: Upshifting speed
I shift from sound and feel.....Wow they tell you stuff about shifting in the manual.....Who would of thought.I think all three of my owners manuals are in there plastic bags in a file some where.....Altho I did buy a shop manual for my 80 FLT when I replaced the stator.......
#6
RE: Upshifting speed
First, I don't think the manual is wrong. There will always be the average Joe who thinks they know more than HD, who spent 4 years building the Twin Cam engine.
I was shifting my Road King by ear for about 6 months before I installed my tach.I was only off by about 500 rpm. If you want to know where your engine feels happiest, then take your bike out on the expressway and run it up to redline in 2nd gear. Once you get a feel for the entire RPM band of your engine, then I think you'll see where you should be shifting. On my bike, anything above 4,000rpm starts to vibrate pretty good, so I don't go that high unless I'm trying to get maximum performance. And I don't go lower than 1500, because my engine starts to ping at much below that.
I was shifting my Road King by ear for about 6 months before I installed my tach.I was only off by about 500 rpm. If you want to know where your engine feels happiest, then take your bike out on the expressway and run it up to redline in 2nd gear. Once you get a feel for the entire RPM band of your engine, then I think you'll see where you should be shifting. On my bike, anything above 4,000rpm starts to vibrate pretty good, so I don't go that high unless I'm trying to get maximum performance. And I don't go lower than 1500, because my engine starts to ping at much below that.
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