What crankshaft ?? PX DR177

[fredperrybruce]

Hi all,

had to strip engine back down due to damaged casing's which will be sorted with a SIP bracket instead of Cir-clip holding the main bearing in place

Anyway back to the question in hand, took the crankshaft out after forgetting the check the dam thing before, for wear/damage to find the bloody thing rattles like a snake so not gonna mess around just going to buy new one.

So question is what one would be suitable for my DR 177 set up?? was looking around and found this

www.ebay.co.uk/itm/VESPA-PX-125-150-CRANK-CRANKSHAFT-COMPLETE-GENUINE-RICAMBIO-RAPIDO-/371205228404?pt=UK_Motorcycle_Parts&hash=item566d8e4774


But what others would you recommend?? thanks

[vespasco]

The answer may lay in this thread somewhere!?
Sime6 has the DR kit and considered using a long stroke.

vespa.proboards.com/thread/4487/cranks-thick-gaskets-squish-timings

[pxguru]

I would never fit anything but a 60mm crank in a DR kit

[fredperrybruce]

Just had a quick flick through the thread

vespa.proboards.com/thread/4487/cranks-thick-gaskets-squish-timings

and to be honest sound's way above my capability and understanding of what I need to do and look out for if using a long stroke crank
so I will stick with a 60mm .

However what's the best brand to buy?? for durability

[shipscat]

one of these www.tuttoscootervintage.com/vilebrequin-pinasco-57mm-125-150-px-lml-start-cosa-pinasco,fr,4,25080887-pnc.cfm
and are you sure its the crank ? it could be the clutch

[fredperrybruce]

Sorry shipscat can't view that link you posted ,,, It's the crank mate that's f**ked not clutch . bearings sound shot & crank arm looks out of true sitting to one side so deffo gonna replace

[vespasco]

Now im confused... Long stroke for px would be 60mm wouldnt it?

Nice website, Hly sht! Mec Eur stroker - €80! I use MecEur Conservative/stock like timing (they're now called Takamini or something)
Those Pinasco cranks look nice too.


www.tuttoscootervintage.com

[shipscat]

sorry m8 look at the same site under " Vilebrequin " = crank in English

[fredperrybruce]

Sorry ,, long stroke 60mm ,, standard 57mm which is what I'm after

Nice site www.tuttoscootervintage.com
Cheers Vespasco

[henri]

thats sum nice scooter porn for this mornings wakey wakey , the options on cranks if your keeping to rotary valve inlet mostly are genuine or mazzecheli ? (spelling) , the mazzys carry a rep of 50/50 ,either bullet proof out the box or "chocalate tea pot " , havent used ricambi for large frame cranks but they have a solid rep in the smallframe cranks , bought direct a et3 crank is 46 euros+20 shipping an good for 15-20hp , so if there large frame cranks are similar quality,an i dont see why not ,there def a leader in the choice ,
i dont know about pinasco's an polini cranks ,but vague memorys telling me there cut to give more inlet timing an arent as balanced as genuine types , an ive been advised before if your going that way either go long stroke or all the way an full circle n reed valve inlet,
check out ricambi's web pages an you'll get a better idea of the choices an probably save a bit by cutting out the e bay middleman,saying that ive used highway m/cycles before for stuff an theve always been good an in case of probs its always easier with a brit seller .H