The New Kawasaki ZXRR125GP

[Sketchy_Racer]

haha,

I took possesion of my new GP bike yesterday.

What a beauty!

Does cranking wheelies!

Can't wait to race it.

See ya's at the track!!

-RG

PS. It is clearly a kawasaki, NOT a honda. :p

[MattRSK]

there is no way someone with a social status as me would own a honda.


You got that right.

Well done though, look forward to watching you progress next year.

- Matt

[Sketchy_Racer]

Anyways, seen as matt told me to be a litte more informative,

it is a 1997 honda RS125R

Updated to the 2000 wiring harness, caburator and ecu. The new carb has whats called 'powerjet' which im not 100% sure what it does, but i believe that it gives better throttle response and a better torque curve.

2004 Movistar replica fairings, that are, lets say: HUGE for a 125. but thats cool

Titanium nitraded front forks and a racetec valve kitted rear shock.

VHM head with different cc inserts ( over the top for me for now)

Yeah, im really happy with it.

Seems fast, and has an awesome clutch, which i believe is good for 125's

[Trudes]

Well done, looks hot, ride safely buddy as it would be nice to meet you again sometime, at least you're doing it on the track aye!:rockon:

[Racey Rider]

PS. It is clearly a kawasaki, ..... :p

Good On Ya Mate. :apint:

Want some GREEN PAINT for that?!
:cool:

[Skunk]

Looks good RG. Stange colour for a Kwaka...

If you know someone in the signwriting biz or computercut lettering I could give you some files to get the 'proper' lettering done. PM me.

Powerjet idea has been around a while. I've got a book you could read about it in if you're really interested.

[Skunk]

Want some GREEN PAINT for that?!
:cool:
Or yellow leathers and a black helmet.

[riffer]

Hmmm. nice.

Good to meet you the other day.

Make sure you give us some good race reports on this one. :yes:

[ajturbo]

Good On Ya Mate. :apint:

Want some GREEN PAINT for that?!
:cool:


no he was telling me on saturday night, that he was thinking about metalic pink!!!
i am really hoping that he was joking!!!

it is a shame though... they are too scared to put it up against the gt125...

but then again there is a practice day coming up ....:scooter:

also, the boys on saturday night were not really sure if it would be any faster than his SR250 chopper!..( i think it may have better brakes)

[Skunk]

I wouldn't do metallic pink. Plain pink is more RG.

[Sketchy_Racer]

Well done, looks hot, ride safely buddy as it would be nice to meet you again sometime, at least you're doing it on the track aye!

Thank you, And i hope to see you and Kengod on some rides in the future when i fiiinnnaaally get my GPX going :)


Good On Ya Mate.

Want some GREEN PAINT for that?!

haha, cheers.
unfortunatly, it wont be painted green like a real kawasaki, gree does not go well with the sponsers 'new' stickers. But i have a plan to make it really stick out, (in a good way :) )


Looks good RG. Stange colour for a Kwaka...

If you know someone in the signwriting biz or computercut lettering I could give you some files to get the 'proper' lettering done. PM me.

Powerjet idea has been around a while. I've got a book you could read about it in if you're really interested.

haha, yeah the color is a bit odd, although i think the last owner was a little bit of a girl (seriously) so didnt know. :p

haha, yeah I got a HUGE manual at home with all the stuff i need to know, just gotta sit down and read it :)

-RG

[Sketchy_Racer]

Hmmm. nice.

Good to meet you the other day.

Make sure you give us some good race reports on this one

Yeah mate, always good to put new names to faces :)

And i'll try my best for some good race reports. (i really suck at comunicating over the internet :( )


no he was telling me on saturday night, that he was thinking about metalic pink!!!
i am really hoping that he was joking!!!

it is a shame though... they are too scared to put it up against the gt125...

but then again there is a practice day coming up ....

also, the boys on saturday night were not really sure if it would be any faster than his SR250 chopper!..( i think it may have better brakes)

haha, me and my brother had a drag race down the (closed) road.
Im sorry to say, but the damn honda won

would love to do it pink, but the sponsers may have different feelings about the color haha.

And holy crap, the brakes. Single finger stoppies anyone?? :yeah:

[vtec]

That's a very nice little scooter you've got there mate. Sounds like you'll be having a lot of fun on that in the near future. See you at the "spectacular" on the 30th and 31st??

[gav]

Congrats on the new bike! Looks like Ivan might have some competition now! :innocent:

[Buddha#81]

You sold your FXR to me to buy that! Silly silly young man.







Nah just kidding looks shit hot, just dont get pissed and decide to fark with the exhaust! Good luck, and look foward to the race reports.

[Jamezo]

Suhweeet! Hope I get to see you race.

[Maido]

Powerjet solinoid introduces fuel from midrange (about 7000prm on rs250) to near top end (exact point depends on what cut out you have in, the cut out is a plug in your harness, the plugs come with different resistances depending on where you want the solinoid to stop working, ie on rs250, 12500, 12750, 13000 etc) after this point solinoid shuts off to allow engine over rev. have a nice day.:whocares: :innocent:

[k14]

Congrats on the new bike! Looks like Ivan might have some competition now! :innocent:
Don't be silly gav, rossi isn't coming to race.

[Ivan]

Don't be silly gav, rossi isn't coming to race.

Yeah well Rossi cracks under pressure so its allgood, but I am racing Troy Bayliss on the new Ducati 800 today tho.

Bike looks pretty good Glen hope you dont keep riding it on the road burning your clutch out and hope you get a proper mixing jug unlike how I have seen you mix 2 stroke before! NO PUT A DAB OF OIL HERE AND THATS ALLGOOD!!!

Mynes gonna be competitive now I did a oil change last night that Spectro Clutch saver is real good stuff havnt fried a clutch yet but am panicing with my isle of mann gearing thats on it at the momment the tallest gearing possible to get the top speed out of it

[F5 Dave]

The last owner didn't choose the paint, Si (ex bucketer) did that's who bought all the blingy bits for it & my mate painted it. Before that it was owned by Darrin, another bucketer.

[Ivan]

The last owner didn't choose the paint, Si (ex bucketer) did that's who bought all the blingy bits for it & my mate painted it. Before that it was owned by Darrin, another bucketer.

I dont like the paint job yellow just seems a little on the gay side I think (kinda suits glen well) :innocent:


The bike is quite nice the only other thing that looks gay is the tip on the can how it is rounded.

[F5 Dave]

Since when is Yellow Gay?, Crumbs they are claiming Purple & now Yellow?

& the 'can', whatever that is, maybe the muffler? Gee you young boys get excited easily with your homoerotica.

The outlet being radiused is safer & theoretically flows better than a sharp edge. But it is pointed the wrong way & should be angled close to horizontal. Bad guesses on the back of a postage stamp sent to PO box . . .

[Sketchy_Racer]

So dave,

Who was the one that rooted the original cases??

Im gonna take them to work and put them on the mill and see if i can clean them up enough to use again...if i needed to

Thanks for all the good coments guys.

Vtec - Yes will definatly be at the road race spectacular!! I'll see how i go on the sat practice, cause i highly doubt that there will be enough 125s to have thier own class, so depending on lap times, might pop into the 600s.... maybe. Highly unlikely though.

Spud - haha, stupid me.... I shoulda known.. that FXR was a gem... to me

And nothing gay with yellow. The only gay thing around here, is when ivan starts talking (shit)

[MOTOXXX]

nice bike.....kinda looks like this one :shit:

[ajturbo]

[quote=spud racer;856428]You sold your FXR to me to buy that! Silly silly young man.


/quote]

i beg to ask... who is sillier?
you who brought rg's FXR....

or

well no-one actully:done:

[Sparky Bills]

nice bike.....kinda looks like this one :shit:


HEY!!
It actually looks like the same one!
And even looks like a Honda is running over it!:innocent:

Go hard buddy!

[Darkman]

nice one mate..looking fw to see you out there!

[Sketchy_Racer]

nice bike.....kinda looks like this one :shit:

Thats cause it is :yeah:

It still has the scratches to proove it haha.

Martin- Did the RS at motomart sell?? I didnt see it in the front shop when we were in the other weekend

Darkman- thanks mate, see you at the track?

[texmo]

Congrats on the new bike dude _b

[Tim 39]

YAY you finally got it!!! looks good too! I'l be seeing you at the nationals then :rockon: 125's

[Sketchy_Racer]

Cheers Tex, Will you be at the Taupo thing on new years??

Tim, Yeah man i'll see you at the manfeild round next year, and maaayybe Puke round.... (depends on how much $$ i have)

Damn, i still cant get over how quick they are! Once up to revs in first gear if i shut the throttle and get back on, it will bring the front up no issues..!!

[Tim 39]

(depends on how much $$ i have)


Yeah I'm suffering from a little no-money-itis at the moment too, this is the very pronounced down side to the otherwise perfect bikes.
I'l come and find you at manfield in the nationals, I'm the guy with the blue (hopefuly still blue by then too!!!) 125 with 97 fairings number 39, and will be wearing a dunlop hat :cool:
see you there!

[Sketchy_Racer]

Gah..

This sucks.

I wanna ride... but it is still another two weeks away till i race!!!

Working on 125s is so much better than a crappy street bike!..... they are built so much more logically!

[Tim 39]

Working on 125s is so much better than a crappy street bike!..... they are built so much more logically!

yea I think they would be one of the very few bikes that manufacturers have thought about the poor buggers that have to work on them, usualy they put all the bolts in in-accessible places just to piss the mechanics off

[Dodgy]

So dave,

Who was the one that rooted the original cases??

Im gonna take them to work and put them on the mill and see if i can clean them up enough to use again...if i needed to




What the F#^^K happened to the cases? They were really well setup, flowed and matched.... bugger...

I have a Samba (spanish made) pipe that goes really well with that bike, PM me if you wanna talk more...

[JayRacer37]

yea I think they would be one of the very few bikes that manufacturers have thought about the poor buggers that have to work on them, usualy they put all the bolts in in-accessible places just to piss the mechanics off

Then it's also one of very few publically avalible bikes designed to be purely raced....im sure it would get messy if you chucked a lighting harness in there, and a starter motor, and, and, and.....
proper race bikes are the mutts nuts, SO logical, even I can work on them, and to those that know me personally, thats REAL logical!!
Good luck on it Glen, from what we have seem of you on it so far, it looks very positive!

[Sketchy_Racer]

Cheers jay..

I can't wait for minefeild!!

I got a basic setup on my suspension done today.

Turns out the spring i had was too hard for me. So we put the heavier one in, So Sag setup is all good now!!

Hopefully it will help settle the bike a bit over the bumps at manfeild!

The bike 'should' have its new Kawasaki Green paint job by then, if not... look for a primer bike :yes:

-Glen

[k14]

That doesn't make sense. If you were having problems with hard suspension then you should have put in softer (lighter) springs. What weight springs do you have now? On the NZ tracks I have found that you have to run really soft suspension on the RS due to the amount of bumps around.

[Ivan]

I also agree with K14 that made no sense


Turns out I had to harder sping for me so put a harder spring in?



I use standered HRC spring it is probably the best one for me for my weight you would probably find standered or medium would be perfect for you as we are similar weights and that ones perfect for me.

I talked to a few riders about it and they either run here in NZ soft or Medium,

[F5 Dave]

I also agree with K14 that made no sense


Turns out I had to harder sping for me so put a harder spring in?
. . .,

I think everyone will agree that made no sense either.

[translates] I had too hard a spring for me, so you put a harder spring in?

I'm sure Glen got all excited & was just a typo. Probably had a hard spring in there for Dodgy Si's more stately proportions

[k14]

I'm sure Glen got all excited & was just a typo. Probably had a hard spring in there for Dodgy Si's more stately proportions
Well seeing as he bought it off a NI'er I don't know what springs it would have had. My guess would be it had the 0.65's in there and he's gone back to the standard 0.60's. Hard to say though.

[Ivan]

yeah also agree north island tracks it was most likely set for puke,

I have been told something very wise if you cans et your bike perfect for manfield it will be perfect at every other track in NZ

[k14]

yeah also agree north island tracks it was most likely set for puke,

I have been told something very wise if you cans et your bike perfect for manfield it will be perfect at every other track in NZ
Well then by that reasoning, if you can set it perfectly for ruapuna or levels then it is also perfect for every other track in NZ :rockon:

[JayRacer37]

yeah also agree north island tracks it was most likely set for puke,

I have been told something very wise if you cans et your bike perfect for manfield it will be perfect at every other track in NZ

If you can set your bike up perfect for manfeild, you obviosly see the better side of things too easily!! Try, jus TRY and get a bike to work PERFECT through hi and lo speed max. lean bumps, a hi speed, hi load banked corner with no bumps, and a hi load banked corner with lots of bumps, a open apex lean and hard throttle exit, hard breaking in a straight line, and lent over, both smooth and rooted serfaces on breaks and throttle...etc etc. NOW, a perfect set up or all that??? ALL of it? I don't think so.....time for comprimises!!:whocares:

[k14]

If you can set your bike up perfect for manfeild, you obviosly see the better side of things too easily!! Try, jus TRY and get a bike to work PERFECT through hi and lo speed max. lean bumps, a hi speed, hi load banked corner with no bumps, and a hi load banked corner with lots of bumps, a open apex lean and hard throttle exit, hard breaking in a straight line, and lent over, both smooth and rooted serfaces on breaks and throttle...etc etc. NOW, a perfect set up or all that??? ALL of it? I don't think so.....time for comprimises!!:whocares:
Come on man, you know Ivan is the suspension guru, he knows how to do it all. How else do you think he goes soooo fast round there :done:

[JayRacer37]

Also, Manfeild has lots of banking when your at hi-lean, so when you go to a track like ruapuna, with nothing but flat corners, always end up with a front spring rate thats too heavy and chatter, slides or lack of load due to, the front end not being loaded up by banking. and, at Manfeild, you can run a bike higher ride -hight wise, as you don't really need to factor in changing directions. When you get down south, tracks have sections of corners rolling inot each other, so the bike needs to change direction well to. but then they dont steer well though long slow corners...whick ruapuna has many!!! ARRGGGG!! too bloody difficult!!

[JayRacer37]

In short, there is no perfect set-up anywhere, anytime. But there is ALWAYS an optimum comprimise...adnt his can be very diffrent for two diffrent riders!!!!! SOOOOOO.....why would you have someone who rides completly different to you, fine tune damping adjustments, and then belive them when they tell you its right?? You have to set a bike up for YOU. Other people can help to get the feedback out of you, but it has to be right for the person thats actually riding it.

[roogazza]

Arrrh ! grasshopper ! so wise ! Gaz.

[Skunk]

Come on man, you know Ivan is the suspension guru, he knows how to do it all. How else do you think he goes soooo fast round there :done:
You're just jealous of how good he is.

One day, Jay and K14, you will be at that level. There is no hope for me so I can only watch in awe.

[k14]

You're just jealous of how good he is.

One day, Jay and K14, you will be at that level. There is no hope for me so I can only watch in awe.
Yeah well hopefully I can get some tips off ivan when I come up to Manfeild in a few weeks time. I think it may be a bit far fetched to hope to be better than Ivan, one can only hope to be half the racer he is. :innocent:

[JayRacer37]

You're just jealous of how good he is.

One day, Jay and K14, you will be at that level. There is no hope for me so I can only watch in awe.

Jealous is an evil thing...so i'm putting his speed down to a lap round the club circuit!! ha! im SO not jelous..*mumble, winge, complain*:angry: :Punk:

[F5 Dave]

Shesh, the young man has gone from being a shy whippit who wouldn’t say boo, to stringing together the above spiel which is by far the most sensible thing in this thread. Hope you are using that brain to lever your way into a decent career so you can afford all this expensive motorbike lark.

[JayRacer37]

Shesh, the young man has gone from being a shy whippit who wouldn’t say boo, to stringing together the above spiel which is by far the most sensible thing in this thread. Hope you are using that brain to lever your way into a decent career so you can afford all this expensive motorbike lark.

I didnt say boo, cause I didnt have boo to say :yes:
Iv'e learnt a HELL of a lot over the past few years, mostly from boucing off guys VERY much like yourself at th bukets....best learning ground ever, cause it doesnt hurt to bad if you learn the hard way!! :rockon:
I'm doing my best, its been a bundle of fun "using that brain" to help develop the new Conti race tyre...what a f**king brilliant experience. Bring on manfeild, and another winter of riding little bikes far to hard..go the buckets!!!:rockon:

[Sketchy_Racer]

I think everyone will agree that made no sense either.

[translates] I had too hard a spring for me, so you put a harder spring in?

I'm sure Glen got all excited & was just a typo. Probably had a hard spring in there for Dodgy Si's more stately proportions


Yep typo, I had 'heavy' bouncing around in my head, and wrote it wrong.

It was supposed to say, "the spring i had was too heavy, so we put in a softer one"

Makes more sense that way huh :)

[k14]

Yep so what weight was originally in there and what did you replace it with?

[Sketchy_Racer]

I have two springs,

One which is standard + 1 other one that was too hard. So i can only assume the harder one was 7.5kg/mm and we put the standard 7kg/mm back in.

What i am trying to achieve on the bike is that it handles the faster corners at manfeild, because they are the most crucial.

The problem i was having, was the bike was getting really unsettled on high speed bumps.
Coming out of turn 1, then the follow through right hander as you exit, i was trying to hold full throttle, but there are two bumps in the middle, that the bike got really unsettled, and it would get into a semi vicious 'weave' (for a better word?) Then it got really interesting, as i then had to try get the bike to switch to a left hander, with a bit of trail brake. It got real interesting one lap, i stood the bike up, but the back was still all over the show. As i started braking (a bit to hard) the back wheel came up, and went slightly sideways. Which then was even more interesting, as when it came back down i was starting to tip into splash.

Unfortunatly, in the last two laps of the last session, i decided to get my weight off the seat and onto the pegs. Wow, what a difference. The bike still didint respond well to the bumps, but I could control the bike far better.

One more thing i learnt, if you get a bit carried away exiting the hairpin, it can spin up the rear wheel, if your still cranked over!! I never thought it would have the grunt to do that!!

Love these bikes, i can't wait to really get the hang of them. I know i need to get the '150' riding attitude outta me, as its far to rough for the lightness of the 125s. But we'll get there.

-Glen

[Ivan]

Sweet man go hard aye:yes:

[JayRacer37]

I have two springs,

One which is standard + 1 other one that was too hard. So i can only assume the harder one was 7.5kg/mm and we put the standard 7kg/mm back in.

What i am trying to achieve on the bike is that it handles the faster corners at manfeild, because they are the most crucial.

The problem i was having, was the bike was getting really unsettled on high speed bumps.
Coming out of turn 1, then the follow through right hander as you exit, i was trying to hold full throttle, but there are two bumps in the middle, that the bike got really unsettled, and it would get into a semi vicious 'weave' (for a better word?) Then it got really interesting, as i then had to try get the bike to switch to a left hander, with a bit of trail brake. It got real interesting one lap, i stood the bike up, but the back was still all over the show. As i started braking (a bit to hard) the back wheel came up, and went slightly sideways. Which then was even more interesting, as when it came back down i was starting to tip into splash.

Unfortunatly, in the last two laps of the last session, i decided to get my weight off the seat and onto the pegs. Wow, what a difference. The bike still didint respond well to the bumps, but I could control the bike far better.

One more thing i learnt, if you get a bit carried away exiting the hairpin, it can spin up the rear wheel, if your still cranked over!! I never thought it would have the grunt to do that!!

Love these bikes, i can't wait to really get the hang of them. I know i need to get the '150' riding attitude outta me, as its far to rough for the lightness of the 125s. But we'll get there.

-Glen

Yeah ur spring change should help that, its been a while since I had a chance to play round with a 125, but in essence, to fix the problem over bumps ur describing, you need to 1)lean over less so the suspension can have a go at working in a vertical plane rather than horizontal, 2)get into the suspension and reduce the high speed (compression) damping to let it react faster over bumps (not externally adjustable, dunno, can you do this on a RS125??) 3) get less sidewall stiffness out of your front tyre, either by getting a different construction or dropping pressure. Remember with no weight over the front end and little chassis flex the 125 is never guna be much good over mid turn bumps, this is a place more people than just you have struggled at, I had a few good moment's like you've described there - per session!! For fix 1), hang off the bike more, get your weight inside it, this will have the bike more upright when you hit the bump. This lets the suspension do more to soak up the bump. For this to work well, fix 2) needs also to be in place, as it still may be a bump that is too 'quick' (short sharp and sudden) for the suspension as it is. Fix 3) part i), beta get ur ass in world MotoGP125 so Dunlop will build and supply you diffrent tyres. Fix 3) part ii) will help over this particular bump, but comprimise the stability elsewhere, and poss. overheat/overwork the tyre. This is definitly somthing that could/should be tryed at 'Minefeild'. Sori to say, but all the spring change is really going to do (IF, and all I got is the above quote to guess off, that place is the only one you have a problem at) is give you less avalible travel and more sag, on the breakes, and in hi load corners (sweeper, higgins, all th banked ones), thus comprimising yur speed at these points (all the important ones) for a more comfortable feeling bike at one 'bad' point.
Hope this can help you in some way!!!

[Ivan]

Sweet jay thanks for that makes alot of sense

[steveyb]

Hey RG, or should I say.... we know who you are.
Powerjet, what does it do?
Powerjet adds extra power to the engine by injecting fuel at a metered rate separately to the other jet circuits in the carburettor. The powerjet is electonically controlled via a solenoid on the side of the carburettor and is thus controlled by the ECU. The PJ allows the tuner to avoid mid-throttle engine seizing by richening the midthrottle mixture. Very few engine seizes occur at full throttle. The engine rpm at which the PJ opens and closes can be set if you have an adjustable ECU otherwise it is set by the factory. Typically the PJ will open at say 8k rpm and close at 10.5 or 11k rpm (or something similar) to allow the engine to overrev. The size of the PJ can be changed just as one changes the other jets., but like most of them other than the main jet, they don't tend to need changing from standard.
Cheers, Steve

[k14]

Hey RG, or should I say.... we know who you are.
Powerjet, what does it do?
Powerjet adds extra power to the engine by injecting fuel at a metered rate separately to the other jet circuits in the carburettor. The powerjet is electonically controlled via a solenoid on the side of the carburettor and is thus controlled by the ECU. The PJ allows the tuner to avoid mid-throttle engine seizing by richening the midthrottle mixture. Very few engine seizes occur at full throttle. The engine rpm at which the PJ opens and closes can be set if you have an adjustable ECU otherwise it is set by the factory. Typically the PJ will open at say 8k rpm and close at 10.5 or 11k rpm (or something similar) to allow the engine to overrev. The size of the PJ can be changed just as one changes the other jets., but like most of them other than the main jet, they don't tend to need changing from standard.
Cheers, Steve
On the Rs's (powerjet only on 98 and newer) the power jet is on at all throttle openings below 4000rpm and from 4000 to the controlled rpm is on at above 70% throttle position. The standard cutoff is 12750rpm but you can replace a plug in the wiring loom and change that cutoff to 12500 or 12250.

[Sketchy_Racer]

They would be the modules right?

Mine has the older loom, without the modules. so no difference.

Modules only came into operation in 2001+ AFAIK

[k14]

There is a little plug up by my cdi. I have 3 other plugs in my jet kit which i can swap around to change the cutoff. Waste of time though, I just leave the standard one on the whole time.

[Ivan]

yeah thats the modules.
They are a waste oftime I dont care about power jet carbs. I amused to the old model and can still ride it well its what power band is:rockon:

[k14]

yeah thats the modules.
They are a waste oftime I dont care about power jet carbs. I amused to the old model and can still ride it well its what power band is:rockon:
Yes Ivan, of course you know better than HRC. I think you better ring up Mr Honda and tell him, might even give you a job.

[Ivan]

nope didnt say that im saying i dont use a bike with it. Didnt say Honda didnt need it, Glen and you might like it I like my bike as Im used to it and can ride it without it is what im saying. Dont always jump to conclusions and say that I think I know better Im saying what I like and thats my bike.

[Skunk]

They are a waste oftime I dont care about power jet carbs. I amused to the old model and can still ride it well its what power band is

Is that 'amused' or 'am used'? Have you run out of spaces as well as full stops and commas? I might have a spare 'shift' key too. You appear to be missing both.

[k14]

nope didnt say that im saying i dont use a bike with it. Didnt say Honda didnt need it, Glen and you might like it I like my bike as Im used to it and can ride it without it is what im saying. Dont always jump to conclusions and say that I think I know better Im saying what I like and thats my bike.
Dang, so thats your secret then? No powerjet carb means very fast bike. Right, i'm pulling my powerjet out tomorrow and maybe I'll have a chance of beating you at Manfeild in a few weeks.

[Ivan]

haha nah but you run your power jet and I run my jetting perfect not saying you dont and my gearing for the track which probably gives me almost the same power as ya power jet carb, plus Im used to riding without one I havent rode with one but like my bike as is I choose to stay on my 96 rather than get a 98 RS125 I let my brother have that and I out rode him just means I have to ride alot harder round the corners to get some drive out the exit to stay ahead


HATE MY SPACE BAR IT IS HARD TO USE

[k14]

So if the 98 is faster then why don't you take it so that you can go even faster overall? Oh yeah, guess that would that be unfair on the competion aye? Want them to think they have a chance aye?

[Ivan]

No I honestly dont think owning a newr bike is gonna make a huge difference I like racing my bike and me and my brother argue about who is the betterrider so i said you have the faster bike then if i beat you its your fault not the bikes.

I dont think I am gonna kick ass I dont know were you get this from?
I do know tho this season I am a better rider than last season and I know alot of riders who would agree.
One being the guy who wrote this thread

[Sketchy_Racer]

Ivan, have you ever taken into consideration, that you only adjust the main jet on your bikes?

Sure, it may be running great at full throttle, but the thing is, How much of a track do you really sit at full throttle?? maybe 25-30% at some.

Mid range and smooth power is far more critical than just full throttle peak HP.

This is where the powerjet comes into its own. It wont give the bike more peak HP, but it will give it a far better midrange, for a good drive out of the turns.

Correct me if im wrong

[Ivan]

Yeah oh well i got it running well and you know it works for me so I dont care powerjets a cool idea andI like it just saying I can ride my bike without it, I think anything to make a bike better and more rideable is better
The 96 luckily is a good engine also and is quite rideable compared tot he 93 etc

[Dodgy]

I think the PJ only really works well with unleaded anyway? The theory is magnificent but I found it didnt make too much difference with avgas. Best to put the cutoff down lower, 12250 should be a better bet than 12750

Agree with RG100, setting up the needle and pilot pays dividends. Problem is that the taper on the PJ needles is only really for unleaded fuel anyway and there is only one clip postion that works anyway. At least (if you are runing avgas), the earlier models offer more flexibility.

Rg, did you get my PMs? I sent you some about the chamber and your suspension setup.

[Sketchy_Racer]

No sorry.. havent got any PMs

[k14]

I think the PJ only really works well with unleaded anyway? The theory is magnificent but I found it didnt make too much difference with avgas. Best to put the cutoff down lower, 12250 should be a better bet than 12750

Agree with RG100, setting up the needle and pilot pays dividends. Problem is that the taper on the PJ needles is only really for unleaded fuel anyway and there is only one clip postion that works anyway. At least (if you are runing avgas), the earlier models offer more flexibility.
Yeah I was going to say that too. But with Ivan its in one ear out the other so I couldn't be bothered. The reason for the powerjet as far as I know is to richen up the mid range to prevent detonation and siezure. It may also help get a little more over rev but I would be surprised if it equated to any noticeable gain in power.

What are your reasons behind leaving the cutoff as low as possible?

[Dodgy]

Yeah I was going to say that too. But with Ivan its in one ear out the other so I couldn't be bothered. T

What are your reasons behind leaving the cutoff as low as possible?

Haha, I gathered that too with Ivan :)

The rationale behind the PJ is to lean out the top end and extend over rev. Due to the pipe, port timings and all that crap, the bike runs rich past peak power, so the PJ shuts off to lean it off.

If you read the HRC manual (which RG has my old copy), it nicely illustrates how you need to reduce the cutoff on tighter tracks, where the gearing is lower and where you spend less duration going thru this phase. HRC get all tech with an explanation about the time to drain out the PJ circuit as well.

My igniton is fully adjustable (well, in fact, far too adjustable), and had full data logging built into it. We found the bike responded better with the PJ cutoff right down around 11800 with avgas. It is a BPS unit, which was great for tuning, but crap for support.

[Ivan]

haha
Kinda sucks I listen just dont know what to type I have this issue,
Its not a mental thing just a Ginga thing I think.:whocares:

[F5 Dave]

As the pipe is past peak power frequency & especially with a steep diffuser (which is good for peak power) the effective suction is greatly reduced thus power tends to fall off dramatically.

Any trick to increase pipe temperature, adjust ignition timing, lean off jetting may reduce this & give some more tasty over-rev.

. . . Meaning that you may be tempted to, say increase the angle on the diffuser for some more power & starting the whole ugly process over again.

Time to drain the PJ tube? That makes sense, -cool the things they think of.

Suppose this would change relative to the gear the bike was in & relative overall gearing; as in the shorter gears it would take longer to drain in relation to the revs rising, so you’d want to turn the PJ off earlier in early gears than higher gears, esp for long ccts.