Power Flatspot

[Racey Rider]

Wow! Thats quite a statement. :spudwow:
Please note the first word - PROBABLY - as in, 'He dant know!'
and then to say - >No point in high octane on a two smoker.
Please put thy fingers back in thy pockets before thee embarrasses thyself futher Ixion!

Your bike is designed to run on 91. and as long as it doesn't detonate on 91 (and it shouldn't), then 91 will give you the best power, fuel burn, enconmy, and may help it start easyer.

But high octane IS useful for 2/'s. I use high octane in my race bike, because it needs it. Not because someone thought I should, Not because it's more expencive so Must be better. But because I have proved that 91, in my bike, under my race conditions, at my track, will detonate and seize My motor.

You don't have to 'wring the neck off' a modern 2/ with oil injection for commuting. Yes give it a good burst now and again, but keeping it at high revs is only neccary if you want to be in the 'full power/go fast' bragade.



Do a KB search on the word Octane. theres been heaps written about it.
or heres another post about it.

[marty]

Sounds like a broken powerband to me,not so common these days as modern bikes don't use the old fashioned powerband.I have some here,but they are old and have lost their snap,but I don't mind as it suits my riding style.Try Mitre 10,they used to have an assortment.

i thought 'powerband' myself, but after deeper thought, it's probably one of the two weights, more than likely the long weight. they always give trouble in 2 strokes. i'm sure someone on here has one hanging around somewhere..

[Racey Rider]

O Piss Off you 4/ Bastards

sorry about the language, not what I'ld usually say,, but theres a time and place for everything!

[Str8 Jacket]

Cheers Racey,
Have put 91 in today and am hoping that my bike may actually start a little easier now as I have had a few issues with it starting. Though in saying that it is kinda hard to kickstart a bike with a bung knee!
Is your KR kickstart only or do you have an electric starter as well? . . . .

[Racey Rider]

No they are all just kick start.

It should start easyer on 91. Useing 96 or higher is affectively changing the timeing of the fuel burn, (96 burns slower (appartly,, haven't actually seen it with me own eyes)) , so can cause hard starting unless motor is setup for that fuel.
4/'s are more tolerant of different conditions and fuel octanes.

Let us know ether way if you notice a differance.
We all learn from each other.

[Str8 Jacket]

Let us know ether way if you notice a differance.
We all learn from each other.

Will do, at the moment sometimes when I start it just dies, I try revving it a bit but it just kinda goes "glug glug . . . blurrr" and then dies. Makes it very embarrasing if there's a few peeps around!

[Ixion]

Wow! Thats quite a statement. :spudwow:
Please note the first word - PROBABLY - as in, 'He dant know!'
and then to say - >No point in high octane on a two smoker.
Please put thy fingers back in thy pockets before thee embarrasses thyself futher Ixion!

Your bike is designed to run on 91. and as long as it doesn't detonate on 91 (and it shouldn't), then 91 will give you the best power, fuel burn, enconmy, and may help it start easyer.

But high octane IS useful for 2/'s. I use high octane in my race bike, because it needs it. Not because someone thought I should, Not because it's more expencive so Must be better. But because I have proved that 91, in my bike, under my race conditions, at my track, will detonate and seize My motor.

You don't have to 'wring the neck off' a modern 2/ with oil injection for commuting. Yes give it a good burst now and again, but keeping it at high revs is only neccary if you want to be in the 'full power/go fast' bragade.



Do a KB search on the word Octane. theres been heaps written about it.
or heres another post about it.

Yah, cos your racer is a racer. As you yourself say, road going two smoker should run fine without detonation on 91 . Two strokes have an effectively lower compression ratio than four strokes. Unless there is evidence of detonation, high octane is unlikely to be necessary. It probably won't help. Probably cos two strokes is idiosyncratic and can't be sure that it won't run better on 95 without trying it. So , probably.

For me, I've never found a two stroke that has the same low rev torque as a 4 stroke single - especially a cooking ne like the GN250. If you find one, let me know.

[Aiolos]

Bah. Who needs torques down low? My bike is fine for commuting and much, much better than a GN on the open road.

[Motu]

For me, I've never found a two stroke that has the same low rev torque as a 4 stroke single - especially a cooking ne like the GN250. If you find one, let me know.

Um...a trials bike? They are made for nothing but torque,so long as the throttle is open the motor will never stop,ever.They will sit on the sidestand idling in gear,just turning the back wheel.

[Ixion]

Um...a trials bike? They are made for nothing but torque,so long as the throttle is open the motor will never stop,ever.They will sit on the sidestand idling in gear,just turning the back wheel.

Uh yeah, and a Scott Super Squirrel could pull a side car. OK, correction. Excluding the Scott, road going sports two stroke.

[jimdaworm]

I have only been running it on high octane 95-98 as I am sure someone said it would be better... but if 91 will be better 91 it is! Its cheaper

I dunno if its a fuel thing though... as I think I have always (In the 3 months I have owned it) had 91 in it.

I was wondering if maby it was a carb thing as I only noticed it after a couple of weeks ago nearly running out of fuel... I went to clean/replace the filter but it doesnt seemt to have one!

Completed my CBTA Full license course on wednesday so full license here I come and a bigger bike...

Who wants to buy my bike?

[Jamezo]

Who wants to buy my bike?

me! though I've only got $300......still saving lol

OMGWFTBBQ would certainly be interested, he's a little farther along the way.

but we're both on the look out for decent RG150s.

ps. is the RG150E the regular model? is there anything else even?

[Aiolos]

The E is the only model avaliable in NZ.

[sels1]

Completed my CBTA Full license course on wednesday so full license here I come and a bigger bike...

Good on ya mate

[jimdaworm]

Hey if you want Jamezo or OMGWFTBBQ wants your welcome to come round and have a look at the bike and take it for a ride.

Although I am not quite ready to sell it yet. I need to find me another bike first

Thanks sels1. Its good to see your still riding St8