lambretta piston

[cast66]

Hello has what serve the differences between the two pistons training stage 4

[crazyduck68]

the first one is the sr-200 piston, made in india.

the second one is the asso piston made in italy, as used in the rapido and mugello kits.

i never tried the sr piston, but the asso one, which broke immediately in my rapido.

(and i also heard from ones, that broke in mugellos)

yet i´ve got one of the mb-pistons, but i didn´t try till now.

[cast66]

my cylinder of 200 is in preparation for training stage 4 or 5

do you think if i put the Sr piston in . I have 1 in stock of them.

[Stampede]

my cylinder of 200 is in preparation for training stage 4 or 5

do you think if i put the Sr piston in . I have 1 in stock of them.

SR isn´t the best - cause of breaking rings.

Better try the Asso or (if you´ve got the money) the MBD piston.

Bearbeitet 21. August 2007 von Stampede

[T5Rainer]

The SR-piston is not as bad, as heard by rumors. The main-problem seems to be a too small bore of the cylinder in the SR-kit.

My 64,5 mm SR-piston in a bored TV175 clinder lasts several thousend km and runs great.

[cast66]

ok i 'm going to try when is rebore and prepare if i brake it i buy a mb or a asso vertex

[T5Rainer]

Give the bore 12/100 mm more than max. piston-diameter.

[cast66]

thank's T5Rainer for information

[T5Rainer]

We´re waiting for Your feed-back, when You´ve done the job.

[cast66]

i think next month because i'm in holliday and nobody work's in august in france ah ah ah

[sukram]

i think next month because i'm in holliday and nobody work's in august in france ah ah ah

Does france belong to italy , since the championship match ?

[Arne]

by those standards you'll never get done - inside your 12 and half hour work week and all the vacation you have to take over there

cheers + good luck

[cast66]

hello i change my project i put a 70 mm competition polaris piston on my cylinder. And it's furious first test stop because it was 65 km/h or 115 km/h and imposible to make the best configuration on my carb . Now i command new jet and needles and i do new test when i receive it .

[T5Rainer]

Source and exact type of the piston? All sizes fit without need of changing the conrod?

[cast66]

look the piston

you must change the conrod my preparator fit a italkit forged conrod .

when i open to look is all is ready i take photo

[Werner Amort]

very nice

where can I buy this piston?

[cast66]

i buy mine in spain but i give this pics on ebay in this moment you can buy metor 70 mm for nothing i just buy one for 25 euros

[Werner Amort]

did you have a fabrication number from the polaris piston?

whats the exact diametre? can I use it in a 70,00mm alluminium cylinder?

how long ist the piston?

your conrod, how long it is, 116mm?

Bearbeitet 6. September 2007 von Werner Amort

[cast66]

i think you can use in alluminium cylinder there is 2 chrome rings 1 mm . i don't have the longuer of the piston and the conrod my mecanic command and adjust alone the crankshaft because i don't have necessary tools . When i open to look i take mesure

[Werner Amort]

ok thanks

and can you ask your macanic for a frabrication number

[gravedigger]

rein optisch ist das teil für kolbensteuerung eher zu kurz.

[Stampede]

did you have a fabrication number from the polaris piston?

whats the exact diametre? can I use it in a 70,00mm alluminium cylinder?

how long ist the piston?

your conrod, how long it is, 116mm?

Bei den Briten wird was über ne Polaris-Conversion geschrieben :HIER

Daten:

GG Conversion 70mm

1,5mm Fudi

18mm Kobo

112er Pleuel

[cast66]

it's aproximative mesure when i open the barrel to look i take realistic mesure

[gravedigger]

the machine don't start easy on road it very performent Shocked but i'm very rich my spark is black .

[cast66]

now it star easy you can give me some help if you want i'm not best to configure phbh carb

[Werner Amort]

bin grad durch zufall auf dieses Topic gestoßen

http://www.germanscooterforum.de/index.php...t&p=1067520

also Suzuki TSX250 kolben

hätte geschlossenes Hemd

16er Bolzen

d 70mm

laut Bild relativ hohe Kompressionshöhe

und müsste auch von der länge her noch passen

gibs von wössner in geschmiedet

Bearbeitet 7. September 2007 von Werner Amort