Rat-Racer - not a Rat Racer any more - new Projekt 03/2011

[t5pien]

hello

this is my ride





















PX-200 Engine Case
Malossi 210 and Piston - completly ported 196,5 / 135
Polini Piston bolt ( lighter )
S & S Longstroke Crank 60 mm
S & S Reed-Intake
RD-350 Membran
Boysen Plates
Vespatronic - Ignition
MMW - Flywheel form verspatronic Igotion
S & S - Exhaust
MMW CNC Clusch 8 xl, 8xxl springs
130 / 70 / 10 on real 4 inch - s & s kit
35 Mikuni carb - HD 300, ND 15, 53´er Nadel 1. Clip
Zylinderhead - low compression 1:10,5, QK 1,5-1,7
Primär: 23/65
gearing: Lusso 200
4 th gear - T5 short
3 rd gear DRT - extralong
Mikuni- fue lpump 14 l
T5 Rearbrake


more than: 35 hp
topspeed: never tested more than 143 - nearly 150
hardcore acceleration
--> daily driver

front and backcut
bitubo´s
dropbar,
blue H4-Lights
back and flashlights LED
grimca disc-brake

paintjob:


everything made by me, except welding

everything with TÃœV - that means you can drive this scooter legal on german streets

more pictures here

http://www.germanscooterforum.de/Galeri ... 88316.html

the hole story ( about 1000 pictures of building ) - sorry complete german

http://www.germanscooterforum.de/Vespa_ ... 82430.html

short youtube videos - still with the first after 1000 mile broken engine ( nearly everything was broken )

http://www.youtube.com/watch?v=TIn4Ky8j ... r_embedded

http://www.youtube.com/watch?v=4IwYfZuq ... re=related

[LI150]

Cool like this Bet it that takes some holding onto when flat out. Have you strengthened your cases as noticed that from build the ones in pics are different take it first ones didnt last

[Diablo]

Cool a lot of hard work there. Does it pull the gearing with such long exhuast timing? Thats pretty tall with the extra gearing from the tyre.
The crank is interesting-is that off the shelf at S&S?

[t5pien]

Cool a lot of hard work there. Does it pull the gearing with such long exhuast timing? Thats pretty tall with the extra gearing from the tyre.
The crank is interesting-is that off the shelf at S&S?

yes it was "hard work" except the custom paintjob ( brush ) , but i work in an office and i need the garagework to keep my head clean ( i hope you understand what i mean ) - working the hole day with a computer sucks - building bikes in the evening rule.

the whole scooter took about 3 month - Jan 2 2010 - märz 30 2010 - ( only in the evenings after work and sometimes the whole weekend ) inkl. the old engine.
bulding the compete new engine after the complete crash in april took about 5 day´s. this winter the scooter gets a fine paintjob, a little bit more power, a new exhaust. this scooter is never ready - i´m still some changing parts .. it´s a daily driver

gearing:
it´s really no problem - the new extra long third gear from drt ( one tooth less ) and the short gear from the t5 works exellent together. the scooter is much lighter than a original px - my weight is about 80 kilogramms - maybe heavier persons have problems with this enginesetup

tyre - and gearing:

i don´t think the amount of the backwheel is much more than a normal 3,5 tyre

here i made a little topic in the german scooteroforum about this kit

http://www.germanscooterforum.de/findpo ... 15584.html


this shop offers the kit

https://shop.strato.de/epages/61438057. ... cts/SS1111


this is my crank:

[santacama]

Thanks for so much info .... way to go.

Nice

[C*NTSPEED]

loving thi crank

[t5pien]

i made a little misstake - i wanted more power ( 2 weeks ago ): after porting the cylinder nearly 140/196 driving trough town sucks. the carb-setting wasn´t good at all - i lost about 4-6 hp


look here - germany rotenburg 3. oktober 2010 - dragracing :



my run - at 0:41 seconds:

http://www.youtube.com/watch?v=yfaoJ75v ... r_embedded#


now down on 134/195 - the power came back, but not as good as before, i need a new cylinder - carbsetting now: 35 mikuni with 57 needle 2. clip, mainjet 290, "other jet" 17,5 - the engine runs now till 9600 upm and have about 36 hp with a better bandwitch than you see above - a new dynorun will be posted in a few days

i think best timings for this machine is 131/195

[t5pien]

hello,

i ´m buidling a complete new one - only a few parts from the old one come into the new racer. every screw, rubber etc. is new. no rat-racer this time, i want a clean, smart and really fast cutdownracer. last time a had about 32-36 hp ( depends on the timing ) - this time i hope to get the 40 hp

the hole story ( german ) hundreds of pics http://www.germanscooterforum.de/Vespa_ ... 07605.html

80 photos from the last few weeks :

http://s811.photobucket.com/albums/zz34/t5pien/Pi%202/

changes

engine - more power :

- complete drt-gearbox
- new reed intake with boyesen reeds
- all bearings, clutchplates screws etc new


complete setup
PX-200 Engine Case
Malossi 210 and Piston - completly ported 196,5 / 135
Polini Piston bolt ( lighter )
S & S Longstroke Crank 60 mm
new Reed intake
RD-350 Membran
Boysen reeds
Vespatronic - Ignition
MMW - Flywheel form verspatronic Igotion
S & S - Exhaust
MMW CNC Clusch 8 xl, 8xxl springs
130 / 70 / 10 on real 4 inch - s & s kit
35 Mikuni carb - HD 300, ND 15, 53´er Nadel 1. Clip
Zylinderhead - low compression 1:10,5, QK 1,5-1,7
Primär: 23/65
T5 Rearbrake


- shortend fork( 5 cm ) with new bitubos
- new digital speedo
- new chassie
- ... too much to list

i hope i finsh the project to the easterrun in hamburg