audiard2

the bigger the bitter! sometimes much cubic capacity for not that much leistung mehr....

you're right: always get back to the old recipes!

nein

nice try but a bit deceptive?? small capacity cylinders leave us not much choices: much power at high rpm or a bit more torque and acceleration but kein pferde anymore!

Ja: gleichzeit....

Auslass 110°, UES 122°? unmoeglisch...

öl loch. Du kannst auch diesen loch stilllegen.

sorry a bit late to answer was in hollydays... Yes piston top to top is around 3 mm.... Actually, I kept the 52mm stroke ,126/186° and 1mm base gasket. Engine is now complete and shut. Excentric and 0,8mm base gasket ready for a next casing split if needed! Vtronic fan wheel didn't pass the right cylinder transfert hump and made an awfull grinding noise. Sort of a classic with pinasco kit! i had to dig a bit border of squish : head became too small after reboring. QS: 1,25 mm with the 1mm base gasket! cool isn'it? no head gasket needed. PS: GD never answered my question about MMW head/malossi piston matching.... Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us

sehr sehr schoene restauration! Aber welcher alu zylinder ist es? pinasco?

nice tip... I'll do it too on my 27/23....

works well like dat: real gaz motorway! race base tells me with a 1mm gasket 126/186° and with 54mm stroke 129,5/187° but piston probably a bit out of the barrel. I have only a 0,5 mm clearance at TDC with a 1mm gasket.... If i use a thicker gasket my timing will be too high....

thanks for your advice: it's not too late to put on the excentric (home) and get a 54mm stroke. I shall wait end of our holydays to go back to the engine. i'm not in a hurry and need to carefully think this thing...54 mm stroke needs a base gasket to avoid piston to go through top of the barrel. therefore i'll get "serious" timing either....I'll make a timing simulation on race base and see what's going on... porting finished: cases have lost around 1kg... Uploaded with ImageShack.us

yes i can raise the barrel about 1mm to line up ports and piston but I need to check new timings. Taffy is silent....I bought the vtronic for T5 but flywheel is heavier (2,025/1,95) than the original... I can remove outer ring with a weight back to 1,1kg. Not enough... So i will test it and see if it needs some radical surgery

1mm QS ist wenig, nein?

thank you for your advice; I haven't a cvf at home so i can not compare the 2 piston tops, but you're right pinasco's head is a crap with a huge chamber ( could be fine for a long stroke) and it has curvy squish band that seems really odd...I'll follow your gentle advice and ask GD what he thinks of matching his mmw head and skr piston... boost port opening is a pleasure maybe my signature in France but as you said before don't know if it gives a damm of anything more. Nevertheless i sleep better: a real performance! it's a Taffy mark IV baught some months ago on scootercenter: a nice and valuable real taffy but maybe done somewhere in the far east... i chose the 1mm base gasket. ports are widdened. Uploaded with ImageShack.us

This is a Malossi for gilera runner ...Hope piston top is close to the one on malossi T5.... http://www.maxiscoot.com/scooter_shop/malossi-piston-mhr-replica-gilera-runner-125-180cc-axe-16mm.html

danke crank-hank; I'll give a look this evening: a bit out of time too...

my new project: a relined "ueberarbeitet" vintage pinasco with malossi 65 mm 125/185°, standard stroke drehschieber crank flowed: 123/65°, Polini/ serie pro packing plate and a PHBH 30, one of the last taffspeed avalable. Guess I will have to work a bit pinasco's head squish to fit the new piston, flatter than the original one.... Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us manifold up to 29,...mm without the pressing-in Uploaded with ImageShack.us case with complete opening to let gaz flow straight to transferts porting still in progress Uploaded with ImageShack.us

In french but explicit to clearly understand the way the emulsion tube works: http://ilcubopiccolo126.free.fr/cours/Carburation/carburation_3.htm

BE2 is the leanest emulsion tube possible at 1/8 to 1/2 throttle opening (and richer at high rev by a balance effect...). Use a richer emulsion tube like BE3 or BE1 My 27/23 was originaly fitted with a BE3 not a BE2...

nevertheless keep an eye (an ear?) on it...

Ja! hammer und schweiss!

evil woman! or evil press! why use such a heavy load for such a small bearing???

was passierte??

Did you rethighten up the rear bold often because of an excessive play of your hub??find metal dust in your hub? Whatever your axial play indicates that your shaft and your bearing are close to their running limit...You'd be a carrefull scooterboy changing all this!