REX Sprint Japan Style called "Japan´s sunrise"

David (D.N.) · 02-03-2008, 18:45

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.

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

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

Before:

After:

New paint:

Next Day:

Result of 3 days.

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

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

Engine:

20cm longer

With body´s:

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:

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

Video:

YouTube - D.N.performance Exhaust System Rex Scooter Drag Race

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.....

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

David (D.N.)

**Razma** · 02-03-2008, 18:48

please use tags to resize

David (D.N.) · 02-03-2008, 19:10

Sorry !

**John** · 02-03-2008, 21:05

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

David (D.N.) · 02-03-2008, 21:12

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** · 02-03-2008, 21:18

Quote:

Originally Posted by 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.

Ok nice...

nemz305 · 03-03-2008, 07:04

NICE WORK MAN WHAT A DIFFRENCE FROM STOCK HUH

BartR. · 03-03-2008, 09:12

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** · 03-03-2008, 09:15

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

I know that the TS is German....

Quote:

Scooters (English Spoken)

floatingjohn · 03-03-2008, 09:43

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

BartR. · 03-03-2008, 10:50

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

**John** · 03-03-2008, 11:11

Quote:

Originally Posted by BartR.

@ 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.) · 03-03-2008, 15:52

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 · 04-03-2008, 15:05

nice nice nice nice

David (D.N.) · 04-03-2008, 20:54

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

**Ben** · 04-03-2008, 21:48

Omg that thing is awesome ! Nice work !

$peedfre@k · 05-03-2008, 10:47

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

**Razma** · 05-03-2008, 11:08

Quote:

Originally Posted by David (D.N.)

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 · 05-03-2008, 11:13

Meinerzhagen I think Inne

,

Nice and low scooter, I like it

David (D.N.) · 05-03-2008, 17:07

Quote:

Originally Posted by @k

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

Hey, no problem

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!

Ac PuRe StyLe · 05-03-2008, 17:08

Nice Scooter

!
Grtz

Quanni90 · 06-03-2008, 00:51

by looking at your video i suggest you try heavier rollers, check clutch to see if its slipping, try a stiffer contra spring and check belt to see if its slipping between your pulleys because you bike was screaming and going no where... but non the less you got 1 good lookin bike

Quanni90 · 06-03-2008, 00:55

nvm your second run off the line in the video seems to be faster... guess you corrected something

David (D.N.) · 06-03-2008, 16:50

No the scooter was riding very good, but not perfect.
You´re right- I´d change the pouleyspring to an extremer one.
But after the videoruns.
Now my bike is much faster than in the past with my mk prorace.
The AC cylinder runs agressiv now.

David (D.N.) · 09-03-2008, 22:15

YouTube - D.N.performance Air cooled DragraceTest

Today we have tested anything.

A little Video^^

AD) - 0n · 09-03-2008, 22:32

Nice David

ready to rumble

02-03-2008, 18:48	#2 (permalink)
Razma ST.net tiepert...	please use tags to resize __________________ www.stickerspersms.nl

02-03-2008, 21:05	#4 (permalink)
John New guy in town...	Nice exhaust. Only i think that 17.000 is too much rpm... __________________ 7,397 en 114,4km/h met 100kilo rijder...(zonder reactie tijd) Carbon stickerfolie? Voor op kappen etc? PM mij.

03-03-2008, 09:12	#8 (permalink)
BartR. Almost Retired!	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. __________________ 2fast zipper

03-03-2008, 10:50	#11 (permalink)
BartR. Almost Retired!	@ john: Your right! Didn't mention that this section was only englisch spoken. __________________ 2fast zipper

03-03-2008, 15:52	#13 (permalink)
David (D.N.) Exhaust maker	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 Last edited by David (D.N.); 04-03-2008 at 19:14.

02-03-2008, 19:10	#3 (permalink)
David (D.N.) Exhaust maker	Sorry !

02-03-2008, 21:12	#5 (permalink)
David (D.N.) Exhaust maker	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.

03-03-2008, 07:04	#7 (permalink)
nemz305 02 aerox	NICE WORK MAN WHAT A DIFFRENCE FROM STOCK HUH

03-03-2008, 09:43	#10 (permalink)
floatingjohn Registered User	nice project but i don't like the colours..

04-03-2008, 15:05	#14 (permalink)
$peedfre@k 2nd Life Scooters	nice nice nice nice __________________ 2nd Life Scooters

04-03-2008, 20:54	#15 (permalink)
David (D.N.) Exhaust maker	This weekend i will go to drive and make a video. The Setup i tested was very good.

04-03-2008, 21:48	#16 (permalink)
Ben Fucked My scooter: ScooterbaseID	Omg that thing is awesome ! Nice work ! __________________ Kut Belg : Ze hadden jou, als pasgeboren baby, met je hoofd tegen de tafel moeten slaan! Je zou het toch niet voelen! :W

05-03-2008, 10:47	#17 (permalink)
$peedfre@k 2nd Life Scooters	Can you make the same exhaust 'look' for me? __________________ 2nd Life Scooters

05-03-2008, 11:13	#19 (permalink)
Rene SBO Stalker #27 My scooter: ScooterbaseID	Meinerzhagen I think Inne , Nice and low scooter, I like it __________________ http://www.renedegekste.tk Joene ; zegt: fuck die sprints :+ Rene ; zegt: Idd. alleen bier drinken en kut roepen

05-03-2008, 17:08	#21 (permalink)
Ac PuRe StyLe Project R1 Stunt	Nice Scooter ! Grtz __________________ Straight Visual Tuning http://forum.scooterforum.net/forum/...-stunt-151232/ Lay Low , I Dont Drive Fast ! I Fly Low

06-03-2008, 00:51	#22 (permalink)
Quanni90 Registered User	by looking at your video i suggest you try heavier rollers, check clutch to see if its slipping, try a stiffer contra spring and check belt to see if its slipping between your pulleys because you bike was screaming and going no where... but non the less you got 1 good lookin bike __________________ http://streamer.soundclick.com/jarry...ktakeabath.mp3 http://4283316.streamer2.soundclick....girlfriend.mp3

06-03-2008, 00:55	#23 (permalink)
Quanni90 Registered User	nvm your second run off the line in the video seems to be faster... guess you corrected something __________________ http://streamer.soundclick.com/jarry...ktakeabath.mp3 http://4283316.streamer2.soundclick....girlfriend.mp3

06-03-2008, 16:50	#24 (permalink)
David (D.N.) Exhaust maker	No the scooter was riding very good, but not perfect. You´re right- I´d change the pouleyspring to an extremer one. But after the videoruns. Now my bike is much faster than in the past with my mk prorace. The AC cylinder runs agressiv now.

09-03-2008, 22:32	#26 (permalink)
AD) - 0n Cristofolini driver	Nice David ready to rumble