Best rev range

[j3gq_imp]

Harm ? very funny

[alprider]

btw.

I've often thought to myself in the last years that US- people are maybe some rpm-damaged from their quarter-mile races....

you can also get up to speed with less rpm, i mean it is often possible to switch gears earlier....keyword is : torque...and 3/4 of this is more as enough already...and if you see at waht rpm you have this 3/4 already...hmmm...


or too in town you can let it rolling in the 5 or 6 gear...(question of gearbox)
----------------------------------------------------

me in switzerland or we here in europe live close together we have (or many) learned to be considerate of others when it comes to noise or here you will be fined for unnecessary revving of the engine.


on many roads the speeds are reduced because of noise.....whole pass roads are only allowed at a maximum of 60km/h


or there are weekend driving bans specifically for motorcycles on certain roads

aand
they want to introduce noise radar
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highly bred ferrari engines do indeed need certain speeds, otherwise they will break down.....but how many such kind engines drives on our roads ?
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[Tev62]

Europe has turned into a continent of rules and regulations (admittedly the law was always very prescriptive in its written Civil Law Vs the unwritten Common Law). Europe loves codes and statutes and the population (mostly) just seems to accept them and move on. The European machine seems to embrace "conformity" which seems to be a reflection of the type of professional journey politician the institutions attract. Luckily not all of this over interference in the daily lives of the people has reached Ireland. If the local council tried to ban motorcycles on a road and leave cars go up it the rule would be ignored and/or fought. They just wouldn't get away with it, it is wholly discriminatory.

[tommymck_imp]

I don't have a philosophical dog in the hunt, but from a practical standpoint, accelerating using the full rev range gets you to highway speeds in..I don't know... 2nd? 3rd? Unless I'm in the Bonneville Salt Flats, it doesn't seem particularly useful to wind up at 65mph in 3rd in 2 seconds and have to immediately shift all the way up to 6th.

I will say that it's quite a bit different with my 5 speed CB750. That's geared way lower and it's definitely more practical to rev nearer to red line with something approaching normal riding.

[GoldOxide_imp]

Maybe... it's just fun and does no harm. I mean... really. No one likes the thrill of acceleration anymore?

... there is a whole rider generation class of wannabee high-stakes (e.g. no riding gear, no helmets, etc.) on those extra high torque ebikes that the herded civilians are purchasing.

[peterbaron]

Maybe... it's just fun and does no harm. I mean... really. No one likes the thrill of acceleration anymore?

... there is a whole rider generation class of wannabee high-stakes (e.g. no riding gear, no helmets, etc.) on those extra high torque ebikes that the herded civilians are purchasing.

Tell me about it ... yesterday, at 407-ETR, I saw a beautiful blue K 1600 GT rider flying 145 km / h next to my car in t-shirt, shorts and sandals

[GoldOxide_imp]

Maybe... it's just fun and does no harm. I mean... really. No one likes the thrill of acceleration anymore?

... there is a whole rider generation class of wannabee high-stakes (e.g. no riding gear, no helmets, etc.) on those extra high torque ebikes that the herded civilians are purchasing.

Tell me about it ... yesterday, at 407-ETR, I saw a beautiful blue K 1600 GT rider flying 145 km / h next to my car in t-shirt, shorts and sandals

... been seeing alotta squids on the Toronto-bound QEW freeway passing/lane snaking at ultra high rates, crouched down, and the back of their t-shirts riding up to their neck. Yeah. Nice boney spine.

[the Ferret]

Do rpms hurt motorcycles? Ridden within reason NO.

Each engine component has only so many cycles in it (bearings, rings, valves, cam chains, cylinders etc). You can use the cycles up fast or you can use them up slowly.

The average MotoGP race where motorcycles are run at maximum rpms for most of their life is 70 miles long. They run 18 of these races a season plus practice and qualifying. That computes to 1260 miles of racing plus maybe another let's say 4,000 miles in practice and qualifying or approx 5,000 miles total. They are allotted 7 engines to last the season. If high rpms didn't wear out engines, why would they need 7 engines to go 5,000 miles?

I've ridden 68,000 miles on my CB1100 and it still starts and runs great. Is it because it is made with more durable materials? Assembled with more care? Or is it because it has been stressed less and run at fewer rpms? Say 4,000 rpms max vs 18,000 rpm max. I dunno ......

I like to think of engines as hearts. The Chinese used to say that a mouse and an elephant get the same number of heart beats in their lifetime. A mouse at 600 beats per minute uses his up very quickly, while the elephant at 30 beats per minute uses his up very slowly.

Something to think about

[PowerDubs_imp]

Do rpms hurt motorcycles? Ridden within reason NO.

Each engine component has only so many cycles in it (bearings, rings, valves, cam chains, cylinders etc). You can use the cycles up fast or you can use them up slowly.

The average MotoGP race where motorcycles are run at maximum rpms for most of their life is 70 miles long. They run 18 of these races a season plus practice and qualifying. That computes to 1260 miles of racing plus maybe another let's say 4,000 miles in practice and qualifying or approx 5,000 miles total. They are allotted 7 engines to last the season. If high rpms didn't wear out engines, why would they need 7 engines to go 5,000 miles?

I've ridden 68,000 miles on my CB1100 and it still starts and runs great. Is it because it is made with more durable materials? Assembled with more care? Or is it because it has been stressed less and run at fewer rpms? Say 4,000 rpms max vs 18,000 rpm max. I dunno ......

I like to think of engines as hearts. The Chinese used to say that a mouse and an elephant get the same number of heart beats in their lifetime. A mouse at 600 beats per minute uses his up very quickly, while the elephant at 30 beats per minute uses his up very slowly.

Something to think about

Not true- and I can tell you why.

Yes they have 'duty cycles' but how you ride the bike (taking proper warm up time / ease - and correct OCI into account- doesn't matter- and again I will argue an engine run spiritedly (once warm and clean oil) will last LONGER than a 'babied' 'old lady driven' one.

Do rpms hurt motorcycles? Ridden within reason NO.

Each engine component has only so many cycles in it (bearings, rings, valves, cam chains, cylinders etc). You can use the cycles up fast or you can use them up slowly.

The average MotoGP race where motorcycles are run at maximum rpms for most of their life is 70 miles long. They run 18 of these races a season plus practice and qualifying. That computes to 1260 miles of racing plus maybe another let's say 4,000 miles in practice and qualifying or approx 5,000 miles total. They are allotted 7 engines to last the season. If high rpms didn't wear out engines, why would they need 7 engines to go 5,000 miles?

I've ridden 68,000 miles on my CB1100 and it still starts and runs great. Is it because it is made with more durable materials? Assembled with more care? Or is it because it has been stressed less and run at fewer rpms? Say 4,000 rpms max vs 18,000 rpm max. I dunno ......

I like to think of engines as hearts. The Chinese used to say that a mouse and an elephant get the same number of heart beats in their lifetime. A mouse at 600 beats per minute uses his up very quickly, while the elephant at 30 beats per minute uses his up very slowly.

Something to think about

As long as you are in the designed RPM of an engine- you are fine. It isn't the revs of an engine- or even how hard it is ridden (OCI and temp accounted for)- it is simply that the higher an engine is designed for, the smaller / thinner everything is- the pistons, the rings, the rods, the bolts, the valves, EVERYTHING is much much smaller / lighter / less friction- but less life span as revs increase- and on a greatly increasing slope.

Meaning- you couldn't drive a 'race car' or bike easy- lower rev / lower throttle and expect it to have a greatly increased life span- that's not how it works.

Yes WOT // high RPM has more heat- more friction- but as I already said- this is often HELPFUL to the engine. Gunk causes MORE friction, more weight, less sealing, more hot spots, more detonation, etc.

Do rpms hurt motorcycles? Ridden within reason NO.

Each engine component has only so many cycles in it (bearings, rings, valves, cam chains, cylinders etc). You can use the cycles up fast or you can use them up slowly.

The average MotoGP race where motorcycles are run at maximum rpms for most of their life is 70 miles long. They run 18 of these races a season plus practice and qualifying. That computes to 1260 miles of racing plus maybe another let's say 4,000 miles in practice and qualifying or approx 5,000 miles total. They are allotted 7 engines to last the season. If high rpms didn't wear out engines, why would they need 7 engines to go 5,000 miles?

I've ridden 68,000 miles on my CB1100 and it still starts and runs great. Is it because it is made with more durable materials? Assembled with more care? Or is it because it has been stressed less and run at fewer rpms? Say 4,000 rpms max vs 18,000 rpm max. I dunno ......

I like to think of engines as hearts. The Chinese used to say that a mouse and an elephant get the same number of heart beats in their lifetime. A mouse at 600 beats per minute uses his up very quickly, while the elephant at 30 beats per minute uses his up very slowly.

Something to think about

Well- 18,000 is absurd to say since our engine runs half that at best...

but I will tell you that a 68k CB1100 engine ridden to near WOT / near full RPM though a couple gears just a few times a week VS a 68k CB1100 that never gets over say 4k and 1/2 throttle ever- I will bet every single dollar I have eve made and ever will- given similar warm up time and oil change- the bike ridden 'gently' will be WORSE if everything opened up, looked at and measured- by every possible metric- compression test, leak down, ring gap, carbon build up, etc.

Do rpms hurt motorcycles? Ridden within reason NO.

Each engine component has only so many cycles in it (bearings, rings, valves, cam chains, cylinders etc). You can use the cycles up fast or you can use them up slowly.

The average MotoGP race where motorcycles are run at maximum rpms for most of their life is 70 miles long. They run 18 of these races a season plus practice and qualifying. That computes to 1260 miles of racing plus maybe another let's say 4,000 miles in practice and qualifying or approx 5,000 miles total. They are allotted 7 engines to last the season. If high rpms didn't wear out engines, why would they need 7 engines to go 5,000 miles?

I've ridden 68,000 miles on my CB1100 and it still starts and runs great. Is it because it is made with more durable materials? Assembled with more care? Or is it because it has been stressed less and run at fewer rpms? Say 4,000 rpms max vs 18,000 rpm max. I dunno ......

I like to think of engines as hearts. The Chinese used to say that a mouse and an elephant get the same number of heart beats in their lifetime. A mouse at 600 beats per minute uses his up very quickly, while the elephant at 30 beats per minute uses his up very slowly.

Something to think about

To some... yea..

[SportsterDoc]

Do rpms hurt motorcycles? Ridden within reason NO.

Each engine component has only so many cycles in it (bearings, rings, valves, cam chains, cylinders etc). You can use the cycles up fast or you can use them up slowly.

The average MotoGP race where motorcycles are run at maximum rpms for most of their life is 70 miles long. They run 18 of these races a season plus practice and qualifying. That computes to 1260 miles of racing plus maybe another let's say 4,000 miles in practice and qualifying or approx 5,000 miles total. They are allotted 7 engines to last the season. If high rpms didn't wear out engines, why would they need 7 engines to go 5,000 miles?

I've ridden 68,000 miles on my CB1100 and it still starts and runs great. Is it because it is made with more durable materials? Assembled with more care? Or is it because it has been stressed less and run at fewer rpms? Say 4,000 rpms max vs 18,000 rpm max. I dunno ......

I like to think of engines as hearts. The Chinese used to say that a mouse and an elephant get the same number of heart beats in their lifetime. A mouse at 600 beats per minute uses his up very quickly, while the elephant at 30 beats per minute uses his up very slowly.

Something to think about

A lot of wisdom in your post.
If I recall correctly, 5000 RPMS on the 6 speed was about 100 MPH.
3500 RPMs about 70 MPH.

With HP (86 or 88?) rated at 7500 RPMs, no need to take it to 8500 redline unless a dire situation arises...such as pulling out in front of a truck.

I think redline, if it had a tach, is about 7000 RPMs on my 942 cc Bolt.

If I shift at or before 35, 45, 55 and 70, I will not exceed 6000 RPMs.

The other day I took it to 40 MPH (~6300) in first to evaluate a new K&N air filter. No difference. I took it to ~6200 RPMs once in 5th to learn top speed.

I think it was very rare for me to hit even 6,000 RPMs on the CB.

It just was not necessary. Rolling at 70 MPH in 6th, a roll-on without down shifting would result in 105 MPH from passing a couple big rigs on a remote desert 2 lane.

On the Bolt, cruising at 80 MPH is 4300 RPMs I rarely exceed 5000 RPMs

Bottom line, using quality oil, changing it per recommendation or earlier, I would expect over 100,000 miles on the CB motor, regularly cruised 2500 - 3500/4000 RPMs and rarely exceeding ~6500 RPMs (~75% of redline).