Not revving past 11,500rpm in 6th
 

Ok, so it only revs to 12k in 6th normally but that extra 500rpm is bugging me ;)

As far as I can rememebr it still bounces off the limiter in the other gears (although I didnt really test it properly, so maybe I'm wrong)

Only thing I can think of that happened between it revving to 12k and 11,500 is running out of petrol.

When it hits 11,500rpm in 6th it sort of hesitates a touch (quite "softly", not like hitting the limiter) back to 11k then starts all over again.

Re: Not revving past 11,500rpm in 6th
 

Its hitting the limiter.
The upper limit is 11.5k

Peak is around 9.2k and redline 10.5

Re: Not revving past 11,500rpm in 6th
 

But I've had it had at 12k rpm steady in 6th before now?

Re: Not revving past 11,500rpm in 6th
 

Unfortunately I cant help with the issue.....but I just want to know how the hell you still have a license :p

Re: Not revving past 11,500rpm in 6th
 

as said your on the limiter out of intrest what speed are you at the limiter

Re: Not revving past 11,500rpm in 6th
 

Flux capacitor is knackered.

Change gearing if you need the speed the 500rpm in 6th will give you.

Re: Not revving past 11,500rpm in 6th
 

A lot of private roads round here ;)
explain then how I got 12k before?
Gearing is perfect right now. I don't need the speed the extra 500 rpm gives but it's still bugging me!

11,500 rpm puts me around 135 ish. 12k is bang on 142.

Honestly I'm not being pedantic over 7mph it's just knowing it did it before and for some reason now it won't.

Re: Not revving past 11,500rpm in 6th
 

have you tightened your chain? last time i saw it, it was for the better word loose.

Re: Not revving past 11,500rpm in 6th
 

Hehe. Yeah, tis tightened-ish now.

Re: Not revving past 11,500rpm in 6th
 

It's knowing where and when you can get away with it.

Re: Not revving past 11,500rpm in 6th
 

If you've been holding it at 12,000 in 6th regularly I suspect it's just plain knackered now....

Re: Not revving past 11,500rpm in 6th
 

bit of a large error factor, don't you think, or you had some "extra" work done then Hong ?

Re: Not revving past 11,500rpm in 6th
 

The power curve drops off a lot high into the revs on the sv so why bounce it off the limiter with hardly any power gain?

It's defo the limiter you're hitting IMO, as RH said, engine isn't gonna last too long doing that.

Re: Not revving past 11,500rpm in 6th
 

I wouldn't say im holding it there regularly at all. I don't sit there with the throttle pinned for ages like that!

BUT I was not aware it should mess with the engine like that - is that not why a limited is there?

What do you mean?



It's defo the limiter you're hitting IMO, as RH said, engine isn't gonna last too long doing that.[/QUOTE]

Re: Not revving past 11,500rpm in 6th
 

Hong, why on earth do you feel the need to ride your bike that hard. *Shakes head*

Anyway, what mark was hinting at is that for a curvey SV to get anywhere near 142 it would need to have some work done on the engine.

As for your problem. Tyres pressures, wind speed, graident, extra pies eaten, the bike slolwy giving in to being threashed to with an inch of its life and may die, Gear/chain degridation. Could be lots of things. My SV with a very loose engine wont rev past about 10k in top and thats downhill, even in the lower gears, it hits the limiter at 11500rpm or there abouts.

Anyway for the record, and i know i have said this to you, there is NO WAY a curvy SV will hit anything above 120-125mph flat out down hill with a following wind on low friction tarmac (On std gear ratios) ...Indicated speed is nowhere near what actual speed is.

Re: Not revving past 11,500rpm in 6th
 

Can't you just remove the limiter? Maybe it will more than 12k ... Just a thought :)

Re: Not revving past 11,500rpm in 6th
 

It probably would, if only once ;)

Re: Not revving past 11,500rpm in 6th
 

Not good idea.
anything about 12 seems to be bad.
Barwel had the issue with his restricted k3 ECU and Berlin made his rear pipe come apart with a overev

Re: Not revving past 11,500rpm in 6th
 

Why ride an sv so hard :confused:

If you want to be riding 130-140+ then surely you need to change bikes and give your sv a chance of surviving...

Re: Not revving past 11,500rpm in 6th
 

Why? Honest answer I dont know.

All the speeds I have given are indicated. I'm not lying about them, I have no desire or need to :confused: No engine work done to improve BHP, only thing I have done is gear down a tooth on the front.

The fact is it used to rev to 12k in 6th quite happily and now it wont. So I'm asking why? Instead I get people berating me for riding like that :confused:

If its doing my engine harm then I appreciate being told of course. I was under the impression it doesnt do any harm as long as I am not sitting like that all day, which I'm not.

It's probably seen 11-12k in 6th for less than .05% of the time I'd rode it.

Feel a bit on the defensive here.


EDIT: Not aimed at anyone in particular, I just quoted Viney as that was the last relevantr post.

Re: Not revving past 11,500rpm in 6th
 

Lets change the question.

Does sitting at INDICATED 130 on an SV for AT MAX a minute or so, for arguments sake regularly, harm the engine?

Assume bike is in otherwise good health and everything is serviced and in order.

Yes or No

Re: Not revving past 11,500rpm in 6th
 

I dont know, im too chicken **** to ever find out :(:p

Re: Not revving past 11,500rpm in 6th
 

Can I just clarify (I dont know why I am defending my riding here) but I dont sit everywhere at top end speed.

If I get the opportunity I'm not going to lie I open it up. I have at times in the past hit top end.

People that have rode with me know I ride sensibly most of the times.

Re: Not revving past 11,500rpm in 6th
 

Bearing in mind that engines have a limited lifespan, the harder you ride them, the shorter their life. It has to do with metal friction.

The closer you are to the top range of the designed rpm, the higher the temperature and stress on components. This accelerates wear on metal, lubrication becomes more difficult as well as pretty much every component is stretched.

How much harm it causes can only be judged at the end of engine's life, but my intuition saids that an engine like that is not going to last near as much as one not revved so hard.

Just because it can do 12k rpm (with a faulty limiter), it doesn't mean you have to keep it constantly there. I think the redline is OK to hit momentarily during fast acceleration but I wouldn't consider riding a street bike at redline for more than 2 seconds.

Re: Not revving past 11,500rpm in 6th
 

Riding around so hard will eventually blow the damn thing up! Its ok to do it occasionally, and contrary to others beliefs, IMO its not something to be doing all the time.

If you want to be riding around at high revs like that.....get a test ride on a bus. In this I mean, you can find out what a great big bike does for speed at 3k, without fear of knackering the engine, and flogging it to death ;)

Re: Not revving past 11,500rpm in 6th
 

I get that.

I just dont think it's not as pronounced as people make it out to be. The speed factor has everyone on their hind legs going "woah", whereas scratching round some country roads doing much the same on the engine speed side of things is much more accepted as the speeds are lower.

Re: Not revving past 11,500rpm in 6th
 

Dizzy if I could get the bus off its stand and keep it upright at standstill I would love to!

But yeah, define hard. I probably redline the thing more on country roads than I do on the mway in top gear.

Re: Not revving past 11,500rpm in 6th
 

This is where you may not get it. 12k revs in 6th gear is a LOT more load on the engine than 12k revs in 3rd gear. The wind resistance at 120+ miles an hour is tremendous and that translates into more fuel being burned and hotter engine.

Re: Not revving past 11,500rpm in 6th
 

Point gracefully taken.

So what do you think to the original question then?Chain tension (my chain is stretched now, although it is adjusted to correct tension), tyre pressures possibly, etc?

Does/should the limiter cut in at exactly the same point regardless of gradient?I'm under the impression that if the engine is able to reach the limiter speed, it will reach it. Or does a slight gradient, proper tyre pressures, etc allow the engine to go "adjust" where the limiter cuts in?

In fact, how is a limiter imposed? Is it mechanical on the SV?Or a combination of other factors that determines cut in point?

Re: Not revving past 11,500rpm in 6th
 

Well no offense, but you are riding it wrong. I ride the SV everywhere on back roads and have never redlined it....AT ANY SPEED. People may take the pi$$ about my riding skilz, but i get everywhere without ever going above 7k.

oh...and the bus, don't be asuming its the size of a barge. Its lower than my VRap, and actuallly weighs very little as its got magnesium frames and ali stuff instead of heavy metal :p

Re: Not revving past 11,500rpm in 6th
 

Ooo, that's a statement Diz!

If we define riding right and wrong in terms of keeping the SV in the peak power range then we both ride it "wrong". The SV makes most of its power beteween 7-9k (so I believe) so by never going above 7k, you are never riding it "right".

In reality though I think the term for riding right or wrong depends on a lot more than where you are in the rev range, and of course, on opinion.

Re: Not revving past 11,500rpm in 6th
 

As it has been said, it is more likely that your speedo / limiter is not working properly and you should ask yourself why / how / if did it work up to 12k previously.

Especially with 1 tooth down on the sprocket, a standard curvy would never reach that speed. 1 tooth down on the front sprocket means the bike would only do 129mph out of the theoretical maximum of 139mph.

Edit: Most speedos also tend to report about 10% higher speeds. Use a SatNav for a closer to reality reading of actual speed.

Re: Not revving past 11,500rpm in 6th
 

Thats my riding style too dizz and i get called a cart horse for doing it :(

Re: Not revving past 11,500rpm in 6th
 

Maybe other people ride faster than you....

You could probably get everywhere without taking it above 4k, but it would be a slow ride.

Re: Not revving past 11,500rpm in 6th
 

Its all subjectory isn't it. I like statements, I'm an opinionated ar$e:p But then I ain't wrong either....and neither are you, to a certain extent on both sides;)

As for people riding faster than me......well for sure, people do, and theres also those that ride slower too. Depends which bike I'm on mikerj.....on the VRap 4k can be getting a right old stomp on in comparison to the SV....but then thats kinda obvious:D If compared to the bus, he can ride at warp speed at tick over :lol:

Re: Not revving past 11,500rpm in 6th
 

My bike rarely see more than 9.5k even when shifting
The SV's peak power is at roughly 9k, i'm getting ready to shift at 7.5k.

Hong on the AR route over the Tan Hill, my peak revs was 9k in 3rd and I was going for it over the fells

Re: Not revving past 11,500rpm in 6th
 

For the sake of the argument, 7k is about the peak of the torque, that is the speed at which the fuel gets burned most efficiently (releasing most of the energy with minimum waste). Keeping the bike around this range IMO makes most sense since you get about 85% of the power in the most efficient way with some power reserve for flexibility.

Re: Not revving past 11,500rpm in 6th
 

So basically, those going over that are wasting it? as theres no point? well actually all they are doing is burning more petrol, so I'll have more left than them in the SV at least!

Re: Not revving past 11,500rpm in 6th
 

lol.

I'm not saying my riding is what everyone's should be, and that my current way of riding is the "right" way.

I'm well aware of my limitations in riding, but at least I'm honest in how I ride.

Say I'm hairing up to a corner, sitting at 8k rpm. Pointless changing up as I'll be slowing down soon, but I still have a bit left so I gas it some more, hit 10k breifly before stomping on the brakes.

Sometimes I'm just lazy and I cant be arsed to shift.

Sometimes I look down and I'm sitting at 9-10k when I thought I was at 8k. Whoopsy. I'm not that proficcient a rider that I can tell exactly where I am without glancing at the tacho occacionally, and if I am right caught up in the moment and dont look down, I do get caught out in terms of being a bit on the high side (and a bit on the low side too sometimes).

Need to be careful when explaining things, as lots of terms are very subjective. Shifting to one person may be barely moving to someone else. It may even mean something different to the same person depending in mood that day.

Re: Not revving past 11,500rpm in 6th
 

If we all rode like that, what's the point in riding for fun... ;)