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-   -   question about RPM's.... (https://www.hdforums.com/forum/sportster-models/1288335-question-about-rpms.html)

Pnut48 06-14-2019 08:10 PM

question about RPM's....
 
I've previously asked a question about what rpm is typically too high to ride at for a spell (something like a side road with speed limit 30 so I will typically try to do about 30 at maybe 2300-2400 rpm in 3rd gear or maybe get up to 40 and hit 4th gear and be doing low 2000's) but this question is about 5th gear. When I hit 60 or start pushing just a tad past that, I'm tach'ing like 2850. Does that seem a little high for a 2018 48? Thanks for any help.

kejobe09 06-14-2019 08:25 PM

I came across a rpm-mph chart before for an 883. I don't know what year it's for, but according to the chart when I run down the highway at 80-85 mph I'm running around 4600-4800 rpm in 5th. Also from the chart 2800 rpm in 5th would be about 50 mph. As I said, I don't know for what year it's for or how accurate it is. From what I've seen the Sportsters in general like to be higher rpm's to be happy. I haven't looked into what is the "sweet" spot, I just ride it...hard. I'm rough on mine, but it just keeps taking it without complaint. I just make sure to keep up on the maintenance.

So my short answer to your question is, no, it doesn't seem high to me.

apache snow 06-14-2019 08:33 PM

You need to turn up the revs. I try to never get below 3000. Sportsters like the higher rpms. They are not like the big twins.

lewk 06-15-2019 12:17 AM


Originally Posted by Pnut48 (Post 18330489)
... what rpm is typically too high to ride at ... so I will typically try to do about 30 at maybe 2300-2400 rpm in 3rd gear or maybe get up to 40 and hit 4th gear and be doing low 2000's ... When I hit 60 or start pushing just a tad past that, I'm tach'ing like 2850. Does that seem a little high for a 2018 48? ...

Actually all these numbers seem a little low.

Midpegs 06-15-2019 03:40 AM

I've ridden GSXR 1100,s for twenty years and I have only had my first Harley Davidson , a 2004 XL1200R for six weeks . Although my new bike does have a tachometer I quickly realised that there isn't much need for it . Why ? Because more than any bike I've ever ridden this bike's engine gives me loads of feedback to the point where it almost talks to me . Maybe you're over thinking the whole riding experience. You need to listen to what your bike is saying and get in tune with its moods . If it's " Thumping " change down and if it's " Buzzing " change up and if it's purring like a contented cat just reach down and stroke the petrol tank ! As previously mentioned , this is not a Big Twin . It's a surprisingly high revving engine that needs those revs to get down the road . By the way, is your bike an 883 or a 1200 ?

Pnut48 06-15-2019 06:54 AM


Originally Posted by lewk (Post 18330868)
Actually all these numbers seem a little low.

granted I try to keep it just outside that thump where it's obviously in too high a gear, I just didn't realize these bikes like to run that high. I knew Japanese bikes love being in high rpm but this is my first experience with a v twin. I'm beginning to see that I need to rethink how I ride this booger, lol.

Pnut48 06-15-2019 06:56 AM


Originally Posted by Midpegs (Post 18330941)
I've ridden GSXR 1100,s for twenty years and I have only had my first Harley Davidson , a 2004 XL1200R for six weeks . Although my new bike does have a tachometer I quickly realised that there isn't much need for it . Why ? Because more than any bike I've ever ridden this bike's engine gives me loads of feedback to the point where it almost talks to me . Maybe you're over thinking the whole riding experience. You need to listen to what your bike is saying and get in tune with its moods . If it's " Thumping " change down and if it's " Buzzing " change up and if it's purring like a contented cat just reach down and stroke the petrol tank ! As previously mentioned , this is not a Big Twin . It's a surprisingly high revving engine that needs those revs to get down the road . By the way, is your bike an 883 or a 1200 ?

1200. I think all the 48's are. Yeah I've been riding just outside that thump range, I'm def getting the picture that I need to stop fearing 3k.

Pnut48 06-15-2019 06:57 AM

thanks for all the help guys!

Kenny94945 06-15-2019 07:44 AM

Isn't redline near 6000 rpm?
Riding at 2850 rpm is perfectly fine....it is not to high of a rpm.

FWIW 5th gear could be used for 65 to 100 mph.

Andy from Sandy 06-15-2019 08:14 AM

There is a gear shift chart in the owner's manual but I think it will see the engine near to lugging.

1 - to - 2 15mph
2 - to - 3 25 mph
3 - to - 4 35 mph
4 - to - 5 45 mph

There is a reciprocal for the downshift and again I think it is way off. Bikes are geared different in the UK to US bikes and mine is not happy running in 5th much under 60 mph.


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