Sat Mar 01, 2014 1:38 pm

Hooked
'65 Sprint 177
Joined: 28 Oct 2013
Posts: 445
Location: Dorset, UK
 
Hooked
'65 Sprint 177
Joined: 28 Oct 2013
Posts: 445
Location: Dorset, UK
Sat Mar 01, 2014 1:38 pm linkquote
Cant figure out what goes in here?!

I've just put back the cases together on the Rally overhaul (8 bolts present) and noticed this hole. Im convinced there was nothing in there when I disassembled it.

If this is completely obvious please feel free to abuse my incompetence



Sat Mar 01, 2014 2:16 pm

Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: 05 Sep 2010
Posts: 6064
Location: Northants UK
 
Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: 05 Sep 2010
Posts: 6064
Location: Northants UK
Sat Mar 01, 2014 2:16 pm linkquote
I'd have a look on the exploded parts diagrams on the Vespaspares or SIP web sites and see if anything's there as a listed part. Should put your mind at rest!
Sat Mar 01, 2014 3:31 pm

Veni, Vidi, Posti
px200 cutdown,px180,px150. Puch SR. Puch scooterette
Joined: 08 Apr 2009
Posts: 5109
Location: west aus
 
Veni, Vidi, Posti
px200 cutdown,px180,px150. Puch SR. Puch scooterette
Joined: 08 Apr 2009
Posts: 5109
Location: west aus
Sat Mar 01, 2014 3:31 pm linkquote
are all 4 case bolts in ?
Sat Mar 01, 2014 8:27 pm

Addicted
Joined: 01 Jan 2012
Posts: 629

 
Addicted
Joined: 01 Jan 2012
Posts: 629

Sat Mar 01, 2014 8:27 pm linkquote
there can be holes that are not all the time used

if it is threaded then it is a stator plate screw securing point
if you can see all the way threw it then it could be a case bolt
Sun Mar 02, 2014 1:17 am

Hooked
'65 Sprint 177
Joined: 28 Oct 2013
Posts: 445
Location: Dorset, UK
 
Hooked
'65 Sprint 177
Joined: 28 Oct 2013
Posts: 445
Location: Dorset, UK
Sun Mar 02, 2014 1:17 am linkquote
Yes...all four case bolts are in, in that particular area...

It does appear to be a case bolt because it goes into a blind hole (will check if its threaded, ive just run out of bolts!)

Its an odd one because this version from SIP just hasnt got it there.

http://www.sip-scootershop.com/en/products/crankcases+piaggio+for+vespa+_43352000

Its not a stator plate hole though because those three are raised and this hole sits at the back
Sun Mar 02, 2014 12:11 pm

Molto Verboso
Joined: 15 Nov 2008
Posts: 1899
Location: Seattle
 
Molto Verboso
Joined: 15 Nov 2008
Posts: 1899
Location: Seattle
Sun Mar 02, 2014 12:11 pm linkquote
it's vestigial, kind of like an appendix.

Pre-P 125/150 engines, of witch the Rally was basically evolved from had that top case bolt in a different position. it was moved to accommodate the longer rotary pad cutout on the 200's and the P's.

there's other vestigial bits on later cases from earlier features; the side transfers on 200's are another example.
Sun Mar 02, 2014 1:21 pm

Hooked
'65 Sprint 177
Joined: 28 Oct 2013
Posts: 445
Location: Dorset, UK
 
Hooked
'65 Sprint 177
Joined: 28 Oct 2013
Posts: 445
Location: Dorset, UK
Sun Mar 02, 2014 1:21 pm linkquote
Excellent...thanks Rob.

I'll ignore it and it should work fine...much like my appendix
Kevin
Sun Mar 02, 2014 1:40 pm

Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: 05 Sep 2010
Posts: 6064
Location: Northants UK
 
Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: 05 Sep 2010
Posts: 6064
Location: Northants UK
Sun Mar 02, 2014 1:40 pm linkquote
Well done Rob, I just learnt a new word I can drop into the occasional Vespa conversation...

Vestigial - 'forming a very small remnant of something that was once greater or more noticeable'

Every day's a learning day...and you can sleep soundly too now Kev
Sun Mar 02, 2014 2:25 pm

Mr. Clean
P,SUPER,V90, 50 Special
Joined: 27 Jul 2010
Posts: 10207
Location: This is't my locker!
 
Mr. Clean
P,SUPER,V90, 50 Special
Joined: 27 Jul 2010
Posts: 10207
Location: This is't my locker!
Sun Mar 02, 2014 2:25 pm linkquote
Thumbs up for Rob.. for constantly sharing his wealth of knowledge on this stuff.
Sun Mar 02, 2014 4:54 pm

Molto Verboso
Joined: 15 Nov 2008
Posts: 1899
Location: Seattle
 
Molto Verboso
Joined: 15 Nov 2008
Posts: 1899
Location: Seattle
Sun Mar 02, 2014 4:54 pm linkquote
it's only early P cases that have it- later revision molds didn't incorporate that bit.

funny enough, pre-P cases have a vestigial lump in roughly the same area as the later stud, even to the extent of having a hole in the gasket there. That's a vestige of an alignment pin used on VNAs to align the case halfs, like the pin down by the oil drain hole in the bottom of the case.

later cases went to using a raised lip around the crankshaft hole and the upper alignment pin was omitted.
Quote:
Thumbs up for Rob.. for constantly sharing his wealth of knowledge on this stuff.
bah. no problem. you'd be shocked the shit i've got floating around in my head about these things.

Just to throw it out there- i hope some out there pay the favor back- i'm close to launching a full online ordering website to branch out in the mail order side of my business. it'll be an automated way to special order pretty much anything SIP carries.
Sun Mar 02, 2014 8:21 pm

Ossessionato
ET2, PX150
Joined: 15 Jun 2007
Posts: 3410
Location: Denver CO
 
Ossessionato
ET2, PX150
Joined: 15 Jun 2007
Posts: 3410
Location: Denver CO
Sun Mar 02, 2014 8:21 pm linkquote
rob hodge wrote:
bah. no problem. you'd be shocked the shit i've got floating around in my head about these things.

Just to throw it out there- i hope some out there pay the favor back- i'm close to launching a full online ordering website to branch out in the mail order side of my business. it'll be an automated way to special order pretty much anything SIP carries.
That gets a thumbs up.
⬆️    About 3 months elapsed between posts    ⬇️
Wed May 21, 2014 10:18 am

Hooked
1974 Rally (3), 1971 Rally 180, 1960 Li 125
Joined: 20 Mar 2014
Posts: 416
Location: Southern California, USA
 
Hooked
1974 Rally (3), 1971 Rally 180, 1960 Li 125
Joined: 20 Mar 2014
Posts: 416
Location: Southern California, USA
Wed May 21, 2014 10:18 am linkquote
Rob is good folk! He's helped me so much already.
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