Forum -> Not-So-Modern
Search Topic
Cracks in fan wheel?
OP
@bananasplit_00 avatar
bananasplit_00
UTC
Hooked
PK125XL elestart
Joined: UTC
Posts: 107
Location: Sweden
 
bananasplit_00
Hooked
@bananasplit_00 avatar
PK125XL elestart
Joined: UTC
Posts: 107
Location: Sweden
UTC quote
So whilst poking around trying to figure out why I have no spark I saw these cracks in the fan at every hole. The "scratches" are from me rubbing the dirt off to get a better view.

Not sure if I need to be worried right now or if I could keep it.

I will probably be removing it soon as I think the pickup coil is bad(measured 2.5ohm instead of 500ohm) so does this need to be replaced too?
One like this at every hole
One like this at every hole
@rallygeek avatar
Rallygeek
UTC
Hooked
Polaris Grey Rally 200, Blue Marine Primavera ET3, Coral Red 50 Special
Joined: UTC
Posts: 469
Location: Melbourne
 
Rallygeek
Hooked
@rallygeek avatar
Polaris Grey Rally 200, Blue Marine Primavera ET3, Coral Red 50 Special
Joined: UTC
Posts: 469
Location: Melbourne
UTC quote
Is it actually a crack or casting imperfection?
OP
@bananasplit_00 avatar
bananasplit_00
UTC
Hooked
PK125XL elestart
Joined: UTC
Posts: 107
Location: Sweden
 
bananasplit_00
Hooked
@bananasplit_00 avatar
PK125XL elestart
Joined: UTC
Posts: 107
Location: Sweden
UTC quote
Rallygeek wrote:
Is it actually a crack or casting imperfection?
Definitely look like cracks to me but I am not really sure how I would tell. Penetrating oil?
@rallygeek avatar
Rallygeek
UTC
Hooked
Polaris Grey Rally 200, Blue Marine Primavera ET3, Coral Red 50 Special
Joined: UTC
Posts: 469
Location: Melbourne
 
Rallygeek
Hooked
@rallygeek avatar
Polaris Grey Rally 200, Blue Marine Primavera ET3, Coral Red 50 Special
Joined: UTC
Posts: 469
Location: Melbourne
UTC quote
Hmm. Possibly, hard to tell from here. It does look like a rough casting, at the bottom right of the rectangular label there is also casting imperfections too.
@oopsclunkthud avatar
oopsclunkthud
UTC
Banned
3:5
Joined: UTC
Posts: 9078
Location: San Francisco
 
oopsclunkthud
Banned
@oopsclunkthud avatar
3:5
Joined: UTC
Posts: 9078
Location: San Francisco
UTC quote
most likely not a crack, but flashing in the casting
@scooterist avatar
scooterist
UTC
Molto Verboso
71' Sprint Veloce , 05' Vespa PX150, 1978 P200E
Joined: UTC
Posts: 1616
Location: Tucson, AZ
 
scooterist
Molto Verboso
@scooterist avatar
71' Sprint Veloce , 05' Vespa PX150, 1978 P200E
Joined: UTC
Posts: 1616
Location: Tucson, AZ
UTC quote
Looks to me more of a metal fatigue crack related to heat and cold cycles, age, vibration and centrifugal force.
Post Reply
Forum -> Not-So-Modern

Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.

Modern Vespa is made possible by our generous supporters.

Buy Me A Coffee
 
Shop on Amazon with Modern Vespa

Modern Vespa is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com

All Content Copyright 2005-2025 by Modern Vespa.
All Rights Reserved.

[ Time: 0.0110s ][ Queries: 4 (0.0020s) ][ live ][ 335 ][ ThingOne ]