F3 TZR

[mboddy]

I'll have to measure the pipes.
The carbs are 34mm Lectrons.

[EEKNOWS]

Sad news, phone call from Jan said all up to 250GP, there was 10 entries now there seems to be only 4  Where are all the 18in slicks theses days...............................

[LCRacer]

There is one..  Dougs new race bike 

Pair of race bikes actually 


Better start looking over your shoulder Smiley 

[mboddy]

At 250gm my new front guard is half the weight of the original.



http://japan.webike.net/YAMAHA/FZR250/Fenders/824/1114/mc/p.ref=model-top/

[yamtz250]

Hi

That fairing does not look like a 2ma/1kt faring, if not what is it

I Dont suppose you have any spare 2xt powervalves do you

Thanks

[mboddy]

Fairing is ARD for the 2ma. Screen made by GP500 from USA.
Still waiting for the CNC file for the improved 2XT power valves.

[mboddy]

Update on the 2XT power valves:
In the next few weeks we should have a pair of plastic 3D printed valves to try for fit in the cylinders
so that we can finalise the dimensions for the billet valves. 

[tzr-v4]

Great... post pictures.
We have a 3D printer from HP a work but quite expensive to run as there is no alternative to HP plastic wire.
Plastic bobbins have an electronic ship to prevent the use of non genuine ones...

But nice printer for prototyping parts.

[jools]

A bit of an update:

As I have quit the sh#te job in WA I have some time to dedicate to the F3 build ready for the Barry Sheene Festival of Speed in 30 days time.
Examination of the top end revealed it pretty much standard so that has gone off to Bruce Woodley with the power valves and F3 manual for him to wave his magic tuning wand over. Also O ringing the cylinders so I can dispense with the head gasket.
Being 1KT cylinders on iron bores at 0.5mm+ I opted for some fresh pistons & rings. I thought I would try a set from Japan that were very reasonably priced and appear very well cast and robust compared to the TKRJ's that were in.
They will be balanced before fitting but will keep an eye out for some 2XT's and follow marks example I think.
I wonder if any of the 56mm YZR125 pistons match ??
Got a 3LN front wheel and once the bearings are changed for the std 12mm axle I'll get the Pirelli Slick changed over from the 2.15 original rim.
The 3.5 rear rim fitted fine. The front wheel spacers will need replacing both sides to centre the wheel and get the disc concentric.

[yamtz250]

Not sure if they are nay good to you, but i am pretty certain i can still get the F3 yamaha pistons

Thanks

[tzr-v4]

I've seen on Yahoo auction F3 pistons for 2XT too.

OEM 2XT pistons are NLA from Yamaha... 
TKRJ are made a batch but... maybe all sold too.

[jools]

Not sure if they are nay good to you, but i am pretty certain i can still get the F3 yamaha pistons

Thanks

That would be worth following up, even if they go in the drawer for later use 
Let me know what you find out, but at the end of the day i think what Mark has done will be more cost effective.

I did get a set of YZR 54mm pistons from Mitaka to try out on a bucket project that never materialised. These were considered for an LC250 with a Nicosil bore but I never took it any further.

[Neal]

A bit of an update:

As I have quit the sh#te job in WA I have some time to dedicate to the F3 build ready for the Barry Sheene Festival of Speed in 30 days time.

Hi Jools ,

At what track is this festival happening ?

thanks

[EEKNOWS]

http://2stroker.createforumhosting.com/topic6518.html

[jools]

As the link shows its at Eastern Creek or to give it its new name - Sydney Motor Sport Park............

Lets hope that we have enough entries to make it a class.

Also the NSW state titles will be held there in April - it would be good if we could get a class - need at least 10 proddy 250 P6 bikes for that.

Looking at last years runners it could possibly scrape in.