REX Sprint Japan Style called "Japan´s sunrise"

[David (D.N.)]

Hello!
My name is David an I come from germany.

+- 2 jears ago I have started with my projekt.

It was originally a Rex Scooter 50 (they are not stay in NL)
It´s like a MBK Forte.

[ir]http://www.dn-performance.de/1.JPG[/ir]

[ir]http://www.dn-performance.de/2.JPG[/ir]


Step1:



So I begin with a little tuningstage.
Setup:
70ccm Alu noname
Tecnigas RS 70 without ABE
21er Dellorto+ Filter
21mm inlet
Hebo carbonreeds
Racingcrank+ C4 bearings
Top clutch (einstellbar) black malossi springs
red malossi MHR sring
Ori Vario

[ir]http://www.dn-performance.de/3.JPG[/ir]

^^ on this picture are only a part of the stuff

Before:
[ir]http://www.dn-performance.de/4.JPG[/ir]
After:
[ir]http://www.dn-performance.de/5.JPG[/ir]

New paint:
[ir]http://www.dn-performance.de/6.JPG[/ir]

[ir]http://www.dn-performance.de/7.JPG[/ir]


Next Day:



[ir]http://www.dn-performance.de/8.JPG[/ir]

[ir]http://www.dn-performance.de/9.JPG[/ir]


Result of 3 days.

[ir]http://www.dn-performance.de/10.JPG[/ir]

[ir]http://www.dn-performance.de/11.JPG[/ir]

----------------------------------------------------------------


Step 2:

I drive 3 weeks with this Setup, than I build the new sprintengine

Setup 1 :
Mk-Prorace D.N.performance ported
Carters: D.N.performance ported
Mk prorace crank
C4 bearings
Overrange
MHR Delta Clutch
MHR Wingbell
MHR ignition
MHR VL14
Inlet D.N.performance
28er Koso
Scr Racing 70
Nardo gearcase

Frame:
Aerox rim and suspension
Downhill
many cuttings on frame
Watercooling (Bosch)


New Paint -Orange/rot
[ir]http://www.dn-performance.de/12.JPG[/ir]

Engine:

[ir]http://www.dn-performance.de/15.JPG[/ir]

20cm longer

[ir]http://www.dn-performance.de/16.JPG[/ir]

[ir]http://www.dn-performance.de/17.JPG[/ir]

With body´s:
[ir]http://www.dn-performance.de/18.JPG[/ir]


With this setup I won the 3. Place on Meinerzhagen Chillmeeting (D) "Open Sprint"

Also I make the 3. Place on Meeting Heerlen (NL) (Peppermill) 2006.

Than i drive 4 races in the german DSSC with one of my exhaustsystems:


[ir]http://www.dn-performance.de/22.JPG[/ir]

0,6HP more than C21, 3,2 HP more than SCR (bad exhaust for my timings)

Video:
[ame="http://de.youtube.com/watch?v=dgJTtlmHtkM"]YouTube - D.N.performance Exhaust System Rex Scooter Drag Race[/ame]


Step3:

After that i made my scoot more "Japanstyle"


New:
HPi Ignition
D.N.performance Inlet (front-Type 30mm)
New D.N. exhaust
Keihin 28mm bore to 30mm
Other suspension
10"
D.N. performance crankshaft kit 85mm
And deeper.....


[ir]http://www.dn-performance.de/27.JPG[/ir]


[ir]http://www.dn-performance.de/24.JPG[/ir]


[ir]http://www.dn-performance.de/28.JPG[/ir]


[ir]http://www.dn-performance.de/29.JPG[/ir]


and now Step4:

Workshop to make a new engine (aircooled).
Cylinder nothing mainstream like Airsal sports or racing with a lot of tuning on it.
Testing:
A lot of exhaustpipes, cylinderheads and carburatorsettings.

I hope you´re like it.

Greetings *D
David (D.N.)

 

[Razma]

please use [ir] [/ir] tags to resize

 

[David (D.N.)]

Sorry !

 

[John]

Nice exhaust. Only i think that 17.000 is too much rpm...

 

[David (D.N.)]

Thats right but the max. powerpeak was at 14300 rpm.
I drive 400m and the gear was to short. +- 180m and this kind of transmission is on the limit.

 

[John]

Thats right but the max. powerpeak was at 14300 rpm.
I drive 400m and the gear was to short. +- 180m and this kind of transmission is on the limit.

Ok nice...

 

[nemz305]

NICE WORK MAN WHAT A DIFFRENCE FROM STOCK HUH

 

[BartR.]

Das auspuff seht sehr hübsch aus!. Wie viel PS produziert die Pro Race? Und warum ein Airsal zylinder fur die neue motor, weil das nicasyl und die kolben von sehr schlechtes qualität sind.

 

[John]

I think it's better you speak English here... So that everybody can understand you.... No offence

I know that the TS is German....

Scooters (English Spoken)

 

[floatingjohn]

nice project but i don't like the colours..

 

[BartR.]

@ john: Your right! Didn't mention that this section was only englisch spoken.

 

[John]

@ john: Your right! Didn't mention that this section was only englisch spoken.

No problem. The reason i said it is because my German is not zo good

 

[David (D.N.)]

I want have an aggressiv non-commercial cylinderkit.
I don´t drive with Airsal piston-almost change all stock things.
porting, racingpiston, special custom head.

Greetings

 

[$peedfre@k]

nice nice nice nice :W

 

[David (D.N.)]

This weekend i will go to drive and make a video.
The Setup i tested was very good.

 

[Ben]

Omg that thing is awesome ! Nice work !

 

[$peedfre@k]

Can you make the same exhaust 'look' for me?

 

[Razma]

II drive 400m and the gear was to short. +- 180m and this kind of transmission is on the limit.

where do you drive 400m sprints in Germany ?

 

[Rene]

Meinerzhagen I think Inne ,

Nice and low scooter, I like it

 

[David (D.N.)]

Can you make the same exhaust 'look' for me?

Hey, no problem


[ir]http://www.dn-performance.de/anlagen/series4.JPG[/ir]

I have a "series" exhaust, or can make spezial exhausts for spezial timings and cylinderdesigns.


^^ I don´t drive 400m Sprints!
This 400m on the Video was only for testing the mainjet of my carb.



But at some meetings 400m are exist!