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post #1 of 12 (permalink) Old 06-18-2014, 09:01 PM Thread Starter
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rpms

Hello
New to the forums
Just traded a Harley in on a 2012 roadstar. Got a great deal it was new in the crate for 7800.

Anyways I'm breaking it in and I just really want to keep it under 3000 rpms for break in.

Could someone with a tach tell me at what speed 3000 rpms is in every gear.

I know everyone has their own way and I read up on them all over the years.....I got my own way and I just like to keep it under 3 in every gear. So I would greatly appreciate a hand.

Thank you in advance
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post #2 of 12 (permalink) Old 06-19-2014, 07:50 AM
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Cant help you with specifics but my dealer said to keep it roughly under hiway speeds for the first few times out. Ive rebuilt a few race engines with help from a guy who did it professionally and when he fired a couple up after a rebuild you could see some blow by for a couple seconds then all was good, he said it only takes a few seconds for the piston rings to seat etc.

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post #3 of 12 (permalink) Old 06-19-2014, 10:01 AM
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Here's the link to the Yamaha speed/RPM calculator.

http://s180867979.onlinehome.us/html...d_rpmcheck.htm

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post #4 of 12 (permalink) Old 06-19-2014, 11:01 AM
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I ride a Road Star. Basically it's always under 3000 rpms unless you're hammer-dogging it. Just take it easy as you're moving through the first two gears, since you shouldn't ever be cruising in them anyway.

Here are the calcs for RPMs in the cruising gears. Just use your ears to identify the RPMs in the lower gears. You'll be fine cause they're lumbering beasts.

Just keep it below 60 in 4th gear, and don't go over 70 in 5th. THAT's the hard part!

* 3rd gear/2200k rpm = 35mph,40mph=2,500rpm.

* 4th gear/1700rpm=35mph/1900=40mph/2100=45mph/2350ish rpm=50mph/2600rpm=55mph/2800ish rpm = 60mph.

* 5th gear/1900=50mph/2200=55mph/2400rpm=60mph/2600rpm=65mph/2800=70mph.

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post #5 of 12 (permalink) Old 06-19-2014, 03:03 PM
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In the old days we broke in cars at under 55 mph. Now adays the logic seems to say that drive the vihicle as you would drive normally. If you want the vihicle to be an open road car, then drive it that way. if you want a city car, drive it that way.
I btroke in my 1100 that way. I get better tan 40 mpg in mixed travel. What else can be better?

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post #6 of 12 (permalink) Old 06-22-2014, 02:36 PM Thread Starter
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Hey guys sorry for the late response. TY for all your replies. that calculator helps although it only goes up to R* 1600 however its probably similar. I cant wait for break in to be over.

@pangea33
Are you sure of your calculations on your 5th speed. They all seem low. I was under the impression your almost doing 90 at 3k. and at 70 it would be around 2300??

Again thanks for the answers

Robert
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post #7 of 12 (permalink) Old 06-22-2014, 02:53 PM
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Not that any of the above are wrong but if you are looking for real deep Road Star info you should ask on the Roadstarclinic.com more R* knowledge over there then you can handle.
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post #8 of 12 (permalink) Old 06-22-2014, 03:22 PM
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Quote:
Originally Posted by Techbota View Post
@pangea33
Are you sure of your calculations on your 5th speed. They all seem low. I was under the impression your almost doing 90 at 3k. and at 70 it would be around 2300??

Again thanks for the answers

Robert
I spend a lot of time over at Roadstarclinic.com and those numbers came from some of the more experienced members, so I took them mostly at face value. Keep in mind there are 1600cc & 1700cc displacement Roadies too. Those numbers would be based on the gearing, and it's possible that my 1600 is geared a little taller than the 1700 with more horsepower.

My personal estimations are all best guess based on my ear, and what RPMs sounded like in various vehicles with tachs I've been on. I can tell you there is a decided change once I exceed 80, and my ears tell me it's mid 3000s. I've hit 100 a few times and while there's some headroom, she's working for it. I am confident that my bike is well above 3k rpm at 90, but I'm also pushing a big windshield, tour pack, and a pretty heavy complement of chrome down the road.

Just as a sanity check, I'd keep in mind that they say to take it easy for the first "x" miles. It seems to me that running about 90% of the functional max speed of a bike, is not exactly taking it easy. Your mileage may vary, as they say.

I second the recommendation to check out that other site. There are some hoops to jump through in order to post, but you'll find a wellspring of knowledgeable Roadstar enthusiasts over there.

Ben C - Cary, NC

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post #9 of 12 (permalink) Old 06-22-2014, 05:09 PM
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Another site might be www.gearingcommander.com. It doesn't have every make and model for every year, but it might have yours.
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post #10 of 12 (permalink) Old 06-22-2014, 05:35 PM
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Quote:
Originally Posted by pangea33 View Post
It seems to me that running about 90% of the functional max speed of a bike, is not exactly taking it easy.
3000 rpm's is no where near 90% of max speed.

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