Link shamelessly stolen from the TZR Forum... the only decent thing to be posted there for ages!!

http://www.minuscule.tv/

Takes a while to download, but well worth it!

Edit: Congratulations to me, on our 30,000th post!
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Andy.
NSR-WORLD.COM

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Last edited by Andy on Sun Dec 24, 2006 3:13 am; edited 1 time in total

Oh come now thats a lie, the talk of the unbustable cranks and huge hp figures are most interesting. If you ever feel you NSR is an underachiever fear not, 10 min there will have you skipping down the street.
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If I have to take the carbs off once more...

like it andy its getting stolen again for mine

Thats Fabulous!!!

Cheers and Seasons Greetings!

Randy
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FILOLI - Fight, Love, Live

Lol. There's no greater accolade than the insults of the fearful, fella's .

For chaps with no professed interest in the TZR, you boys must spend a fair amount of time over there

For me, as long as it fires every stroke it has a place in my heart.

Happy Christmas all.

Wb

wb wrote:For chaps with no professed interest in the TZR, you boys must spend a fair amount of time over there

I'm interested in them, I'd like to have a go on one, maybe someday one will stay togeather long enough for me to achieve this dream

Maybe we should try sessions less than 15 mins or a track with less long straights than Llandow
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Please do not PM me technical questions, if you can't find it on the Forum start a thread

You could try tagging on to the back of me the next time I come past you Fontyyy

You're more than welcome to give the old girl a whirl at Llandow next year, mate. You'll find that they are very similar to the NSR in terms of ergonomics etc, so I'd think you'd feel quite at home straight off the bat. Hopefully have a bit more at the top end than last year too, so hopefully it won't be too disappointing an experience for you power-wise. I'm hoping to have the 21 sorted by then too, as I'd like to take them out back to back. It'd be interesting to see how they compare on the track. I'm pretty sure my RS250 (Aprilia) is quicker on the track than the 3XV, but on the road there's no contest about which is the nicer (and quicker) bike to ride.


Cheers

Wb

... the honda?
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If I have to take the carbs off once more...

Fontyyy, you best go back to the "denial" signature, on behalf of Bulletproof!

wb, we monitor all forums to confirm just how superior we really are! (joke) Dyno runs of 37hp TZR's make us chuckle - or was that a 125?! We love that there's a guy on there so proud he's managed 60hp!!

Then there's the RGV fellas... new power valves, new heads, race fuel... almost into the mid 60's! Even the Sugaya VJ23's are barely scraping 65hp @ 12000rpm! We've only seen one 250 that makes decent power, and that's a lightswitch compared to the NSR. Of course, there's another kicking about, but it ain't no 250!

RS's... just an RGV in a pretty chassis, with 2 more hp!
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Andy.
NSR-WORLD.COM

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lol, What I liked was some poor lad had some TZR graphs up making 40 odd hp and another guy asked "why dont you try an -70 Ecu" to which came the responce.... "thats with a -70!!" lol
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If I have to take the carbs off once more...

Keep building that pedestal expecting a lot from the NSR and must admit the F3 power curve is good

However, you will have to do a wee bit better - this is where we were Nov 2003 with the KR

Sat on our Laurels for a few years and haven't pushed development any further. However, as your NSR is almost a match for this I thought it was time to up my game. Will see next year if the old green thing can run with Honda's best

Notice the KR is the only one we've not had a giggle at so far MJ? Apart from the suspension, it's probably the best of the rest!

I've heard horror stories about certain engine components but not had any experience of them, so I don't know. What are the KR's weaknesses that you have experienced?

What fuel is that running MJ? With the recent tweaks, I expect to see Steve's F3 to be over 72hp now, on pump fuel. Bear in mind that it's ALL NSR parts too, and the cases have still yet to be fully modified. There is also a little more porting that can be done to the barrels, but as the power is so progressive and tractable, it may not be worth going any more aggressive at this time. I think another set of barrels will get done instead.
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Andy.
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Yeah, yeah, yeah... You boys been at the Sherry already?

Not overly keen on the RS myself as a road bike - but it certainly made a lot more sense on the track the one and only time I've had it out there. Like I said, I'm hoping to have the NSR sorted for the spring too. I do want to to love it, you know .

Does all this power braggadocio mean that we'll be seeing your 21 on the track this year then, Andy? You really should if you never have. Certainly puts road riding into perspective in my (limited) experience. I'm hoping to do a good half dozen track days next year myself though. The bug really got under my skin this year. Just wish I'd had the money and opportunities to do it when I was younger and less cautious. Seems crazy to go to the trouble of organising an event and then not taking part.

Season's greetings

Wb

Man, look at the last Llandow... when would I ever get a chance to get out on the track?!

Seriously though, I enjoy the organisation of it all, and getting everyone together. Just to see the paddock full of 2-strokes of all makes and models is enough for me!

First track day I do will be on Steve RC45, following him on his NR750! I know it's 4-stroke stuff, but that's our agreement!
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Andy.
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KR weakness it has a few

Mechanically
The pistons got a bad reputation so I went over to TZ almost from day one so have no experience of failure. I do know some that raced on stock pistons and they did let go. I do suspect that some of that might have been down to not getting an engine warm properly.

If you are ham fisted with the assembly of the barrels and heads you can warp the head or crack a barrel. Not had one fail but as I shorten the barrel by about 2mm which weakens them at the point they break I now get a plate weld across the back of the barrel. There is so little metal on the barrels that they flex which allows the base gasket to push out. To prevent this you need to dot punch the cases or barrels (and I use a bit of Yammy Bond) to give the gasket something to bite against.

If your crank isn't trued up properly, especially generator end, then they can crack the left side of the crankcase.

I know people have had problems with detonation but that is running too high a compression ratio - I avoid that as it stops the engine over reving. You also can get a bit of detonation in the gap between the head and barrel where the head gasket sits. Can avoid this by using Honda three bond when assembling - this squeezes into the gap and seems to stop the detonation damage. On fuel I run 50/50 just to be safe - compression is so low that I could run 97/98 octance pump fuel but why risk it.

Engines are pretty reliable. In 8 seasons racing the only problems I have had were me being sloppy in preparation. Two seizures - one didn't have enough fuel in and with the tap on the left you starve the engine when going round Gerrards. The other forgot to drill the oil holes in the pistons

One cracked crankcase - threw a crank in with out checking it

Broke a bunch of exhausts when I fitted long silencers - for looks we don't run the rear support - the long silencer changed the mechanical resonant length of the pipe and they kept fracturing. Gone back to short TZ cans and no problem.

Tuning wise - though there was a F3 kit all the KR stuff is unobtainable. So you need to improvise and make do the best you can.

The KR runs stock ignition, standard road expansions, standard Carbs (albeit KR-1R) tuning is a bit of porting and heads reprofiled to match the TZ pistons which have a 120mm radius dome as opposed to stock 150mm radius - so in that respect Kawasaki got the basic package pretty much spot on.

The challenge I have is making more power as with what I have got I reckon I have pretty much maxed out. I have a few alternative head profiles to try and I am presently revising the profile of the boost port but that is about it with out going to different expansions and ignition next.

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