OP
UTC

Member
1980 50 Special 85cc; 1998 ET4 125; 2016 Sprint 125; 1980 Ciao
Joined: UTC
Posts: 14
Location: Prague, Czech republic
 
Member
1980 50 Special 85cc; 1998 ET4 125; 2016 Sprint 125; 1980 Ciao
Joined: UTC
Posts: 14
Location: Prague, Czech republic
UTC quote
Hi,
I am about to replace my steering lock with new one. I have successfully drilled out the old one but am little bit unsure about the rivet (or rather hammer drive screw) holes.
The catalog says they are 2,5mm in diameter but the hole seems to be about ca 2-2,2mm. I have drilled the old ones out with 2mm drill bit and 2.5mm drill bit definitely does not fit in.
My question is if I should enlarge the holes to 2,5mm or keep as it is and the rivet's spiral part will somehow deform and adjust by tapping in?

Thanks!
UTC

Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
 
Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
UTC quote
MattDiamond wrote:
Hi,
I am about to replace my steering lock with new one. I have successfully drilled out the old one but am little bit unsure about the rivet (or rather hammer drive screw) holes.
The catalog says they are 2,5mm in diameter but the hole seems to be about ca 2-2,2mm. I have drilled the old ones out with 2mm drill bit and 2.5mm drill bit definitely does not fit in.
My question is if I should enlarge the holes to 2,5mm or keep as it is and the rivet's spiral part will somehow deform and adjust by tapping in?

Thanks!
You should not enlarge the hole. I had the same issue. I had drilled the hole a bit too big. I had to end up squashing the river in a vise to ovalize it. It hammered in ok and the flap fits ok.

Just tap in the rivet with the smaller hole first. Rivets are a dime a dozen but drilling can only be done successfully one time. Try one rivet first. If it won't go, only then drill the next size up.
OP
UTC

Member
1980 50 Special 85cc; 1998 ET4 125; 2016 Sprint 125; 1980 Ciao
Joined: UTC
Posts: 14
Location: Prague, Czech republic
 
Member
1980 50 Special 85cc; 1998 ET4 125; 2016 Sprint 125; 1980 Ciao
Joined: UTC
Posts: 14
Location: Prague, Czech republic
UTC quote
Thanks, I thought so. I don't have the parts at hand yet so don't know how the rivets actually look and feel like. I just thought I might get some pre-operational info. So basically I will care about the base part diameter to fit smoothly and rest will hopefully tap in with some force.
Forum member supplied image with no explanatory text
UTC

Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
 
Ossessionato
Vespas 1964 GS160, 1965 SS180, 1977 V9A1T, 1983 PX150E
Joined: UTC
Posts: 2537
Location: Siam
UTC quote
MattDiamond wrote:
Thanks, I thought so. I don't have the parts at hand yet so don't know how the rivets actually look and feel like. I just thought I might get some pre-operational info. So basically I will care about the base part diameter to fit smoothly and rest will hopefully tap in with some force.
Those ones in the photo you showed are the smaller ones. There is another bigger size made of brass. You should definitely not drill a larger hole.

The one I used was similar to this one. Mine was brass, whereas this one is steel. Steel is probably better. https://sip-scootershop.com/en/products/rivet+3x8+mm+round+head+_31121100
DoubleGood Design banner

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.

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 2005-2024 by Modern Vespa.
All Rights Reserved.


[ Time: 0.0183s ][ Queries: 4 (0.0109s) ][ live ][ 313 ][ ThingOne ]