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@fraggleexport avatar
UTC

Hooked
'65 Sprint 177/ '17 GTS300
Joined: UTC
Posts: 464
Location: Dorset, UK
 
Hooked
@fraggleexport avatar
'65 Sprint 177/ '17 GTS300
Joined: UTC
Posts: 464
Location: Dorset, UK
UTC quote
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
Forum member supplied image with no explanatory text
@brown_beret7 avatar
UTC

Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
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Posts: 6064
Location: Northants UK
 
Veni, Vidi, Posti
@brown_beret7 avatar
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: UTC
Posts: 6064
Location: Northants UK
UTC quote
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!
@joshzingzing avatar
UTC

Veni, Vidi, Posti
px200 cutdown,px180,px150. Puch SR. Puch scooterette
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Posts: 5109
Location: west aus
 
Veni, Vidi, Posti
@joshzingzing avatar
px200 cutdown,px180,px150. Puch SR. Puch scooterette
Joined: UTC
Posts: 5109
Location: west aus
UTC quote
are all 4 case bolts in ?
@spiderwebb avatar
UTC

Addicted
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Addicted
@spiderwebb avatar
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UTC quote
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
OP
@fraggleexport avatar
UTC

Hooked
'65 Sprint 177/ '17 GTS300
Joined: UTC
Posts: 464
Location: Dorset, UK
 
Hooked
@fraggleexport avatar
'65 Sprint 177/ '17 GTS300
Joined: UTC
Posts: 464
Location: Dorset, UK
UTC quote
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
@rob_hodge avatar
UTC

Molto Verboso
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Posts: 1924
Location: Seattle
 
Molto Verboso
@rob_hodge avatar
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Posts: 1924
Location: Seattle
UTC quote
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.
OP
@fraggleexport avatar
UTC

Hooked
'65 Sprint 177/ '17 GTS300
Joined: UTC
Posts: 464
Location: Dorset, UK
 
Hooked
@fraggleexport avatar
'65 Sprint 177/ '17 GTS300
Joined: UTC
Posts: 464
Location: Dorset, UK
UTC quote
Excellent...thanks Rob.

I'll ignore it and it should work fine...much like my appendix
Kevin
@brown_beret7 avatar
UTC

Veni, Vidi, Posti
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: UTC
Posts: 6064
Location: Northants UK
 
Veni, Vidi, Posti
@brown_beret7 avatar
1975 Vespa GTR 125, 1976 Vespa V90 (Resto), 2001 Vespa ET4 125 (Sold), 2009 Vespa GTS300 Super
Joined: UTC
Posts: 6064
Location: Northants UK
UTC quote
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
@vader19 avatar
UTC

Mr. Clean
P,SUPER,V90, 50 Special
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Posts: 10205
Location: This is't my locker!
 
Mr. Clean
@vader19 avatar
P,SUPER,V90, 50 Special
Joined: UTC
Posts: 10205
Location: This is't my locker!
UTC quote
Thumbs up for Rob.. for constantly sharing his wealth of knowledge on this stuff.
@rob_hodge avatar
UTC

Molto Verboso
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Location: Seattle
 
Molto Verboso
@rob_hodge avatar
Joined: UTC
Posts: 1924
Location: Seattle
UTC quote
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.
@nigelthefish avatar
UTC

Ossessionato
ET2, PX150
Joined: UTC
Posts: 3410
Location: Denver CO
 
Ossessionato
@nigelthefish avatar
ET2, PX150
Joined: UTC
Posts: 3410
Location: Denver CO
UTC quote
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    ⬇️
@dwight_schmidt avatar
UTC

Hooked
1974 Rally (3), 1971 Rally 180, 1960 Li 125
Joined: UTC
Posts: 426
Location: Southern California, USA
 
Hooked
@dwight_schmidt avatar
1974 Rally (3), 1971 Rally 180, 1960 Li 125
Joined: UTC
Posts: 426
Location: Southern California, USA
UTC quote
Rob is good folk! He's helped me so much already.
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