The 50

[cotswold]

So why didn't you race on Sunday?

Do you mean me or Dave ?

I had no wets so parked it in the van, then I saw Malcolms exploits in the big boys race and had 2nd thoughts, then I went home.

[koba]

Do you mean me or Dave ?

I had no wets so parked it in the van, then I saw Malcolms exploits in the big boys race and had 2nd thoughts, then I went home.

Shoulda stayed, it wasn't scary at all...

[cotswold]

The frame is borrowed but I have a warped idea of building one like this so I can use the same set up on both bikes?
I was thinking of using either modified mx front end or importing Aprilia one and modifiing that?

[koba]

Don't do it!

That swing-arm must weigh more than twice what the frame does!

There must be better options, I'd rather race on a basic cantilever swing-arm created from old chair legs....

[F5 Dave]

I was thinking ohh frame looks great but what Honda had crappy sw on frame like that? Dawned on me I can't recognise an NF4 with a light disguise of early RS50 parts. Yeah I'd go for the chair legs too. Actually build a sw might not be that hard.

[cotswold]

This series is a full on developement class 2t. I have had a little help here and there from a couple of the guys as they are generaly open with what they are doing. They have just opened a web site

http://freetech50.com/index.php?t=en&p=home

At the moment information is available on Facebook but it may be worth keeping an eye on the new site.


Here are the regulations,

Technical rules:

Engine:
All types of naturally aspirated engines with a cylinder 50cc are allowed.
Fuel:
Gasoline sold only to the public roads !
Aspen Plus , E85 is permitted.
To the lubricating oil may be added to gasoline only .

Intake System:
Open
Inlet size:
Open
Fuel injection:
Allowed

Chassis:
All materials and shapes allowed
Wheel size 16 " , 17 " or 18 "





Limited Class:

Cylinders:
Max 1 cylinder.
Transmission:
Minimum 3 and maximum 6 gears.
Tires:
Only tires approved for road use are allowed.
Rain tires are not allowed!
Electronics:
Traction control is not allowed!
Suspension:
Active suspension is not allowed!
Numberplates:
Yellow background with black numbers!
+ A yellow field, at least 80x30mm on the back of the seat

Unlimited Class:

Everything is open.

NumberPlates:
Red background with white numbers !
+ A red field of at least 80x30mm on the back of the seat

[quallman1234]

Don't do it!

That swing-arm must weigh more than twice what the frame does!

There must be better options, I'd rather race on a basic cantilever swing-arm created from old chair legs....

Thats my old aprilla swingarm! haha!

[cotswold]

Just out of interest with what I have in the garage,

NF4 bare frame..................................... 7.2kg
RS50 Frame with triple trees......................12.5 (Quallmans)

RS50 Sw/arm, disc, caliper, sprocket...........9.5
TZR S/arm bare.......................................6.0 once carrier, sprocket, and brake added what would that come to


FXR frnt wheel, disc ...............................5.3
FXR rear wheel bare................................4.2

RS50 frnt wheel, disc................................6.5
RS50 rear wheel ......................................3.7


NSR50 motor a suprisingly fat ..........................15.0

[cotswold]

Raced today at Mt Wellington and I have plenty of work to do to make the 50 competitive. The mods I have done have shaved 1 second off my lap times so at least heading in the right direction. I noticed today that the new reeds I fitted ( Boysen power reeds ) have given a big boost to the mid range but seems to have strangled the top ( although it may just be that the mid range has improved so much that it seems to not rev so hard ) I need to do something with the foot pegs as they are grounding too easily. On the plus side where I was being lapped by the 2 fast 50's in a ten lap race this time I finished on the same lap in a 12 lapper. I had a DNS in the pre-lim race but tracked that down to a faulty kill switch and finished a distant 3rd in the other 2 races. All in all not too bad.
The f4 boys put on a show in A grade with the top 5 riders running in the magical 29s bracket

[cotswold]

Bloody bugger, my new ignition, reeds and carb rebuild have resulted in less HP, now it has 7 or 8, feeling a bit sad, still coming to GP but may just wave a flag.

[Henk]

Race you fag. I have less than eight HP and a bet for a beer with you.

[cotswold]

Race you fag. I have less than eight HP and a bet for a beer with you.

Me and you fighting it out for last should be quite a spectacle, consider it brung.

[andrew a]

I'm planning to join the fight for last place in F5. Bring it along. I don't know what power any of my bikes have and that's OK I do enjoy riding them. The 50 tends to lie down on the track more than I would like! The newly installed crappy FXR shock may help. Probably wont.
See you there all going well.

[rodg]

after a nightmare at mt wgtn on Sunday with the newly acquired old style aprilia 50 i've used my mechanical genious to identify and repair the latest problem - partial block in fuel line. Dumb ass. It'll be at Tokoroa, hopefully no further problems to discovery. Ironically still have no idea how it goes after two times at the track with different issues each time.

[cotswold]

Mine will not be there, as it has developed a terminal disease. I took it back to the place of power and it became obvious that something is not well inside the engine.