Board index   FAQ   Search  
Register  Login
Board index VRRA Racing Forum Projects

1931 Panther piston mod

NEW! This section is where we can show off our new bike projects!

Moderator: Michael Vinten

1931 Panther piston mod

Postby Ray Roberts #115 » Mon Dec 10, 2012 11:16 pm

Warning: Don't try this at home. I told Rick Yates I think I found a piston that just might work or not...
I bet Dave King has done something like this before, well I hope he has.

Image

Image

Image

Image

Image

Image

Image
Ray Roberts #115
 
Posts: 319
Joined: Thu Jan 20, 2011 2:30 pm

Re: 1931 Panther piston mod

Postby maxpat82 » Tue Dec 11, 2012 6:54 pm

a bolt on extension?
what kind of graded bolt are you using?
locking compound for the bolt? Can't think of any locktite high temperature enough.
Patrick Gagnon
Deficients Racing #821
maxpat82
VRRA Member
 
Posts: 331
Joined: Fri Aug 18, 2006 11:31 am
Location: montreal

Re: 1931 Panther piston mod

Postby Ashton Bond » Tue Dec 11, 2012 8:07 pm

Two piece diesel pistons survive every day for thousands of hours...
BRS Racing #161
CCS, USCRA, AHRMA, VRRA
User avatar
Ashton Bond
 
Posts: 3589
Joined: Mon Aug 09, 2010 10:15 pm
Location: Upstate NY

Re: 1931 Panther piston mod

Postby maxpat82 » Tue Dec 11, 2012 10:08 pm

ahh ok.. didn't know that.
will sleep smarter tonight..hehe
Patrick Gagnon
Deficients Racing #821
maxpat82
VRRA Member
 
Posts: 331
Joined: Fri Aug 18, 2006 11:31 am
Location: montreal

Re: 1931 Panther piston mod

Postby Ray Roberts #115 » Tue Dec 11, 2012 10:33 pm

I didn't know diesel pistons were 2 piece, I feel better already.
The Panther doesn't rev very high being a long stroke 500 single.
The bolts are just grade 8 1/4 20 cap screws and I am using red loctite 450 deg and the 1/2 inch diameter post goes through the new piston and is peened over, I was going to weld it but I thought weld could crack so I riveted it.
Ray Roberts #115
 
Posts: 319
Joined: Thu Jan 20, 2011 2:30 pm

Re: 1931 Panther piston mod

Postby Dave King » Fri Dec 14, 2012 9:01 pm

Good job Ray, looks like something out my past. Have you thought of moving the top compression ring up onto the extension ?
User avatar
Dave King
VRRA Member
 
Posts: 291
Joined: Thu Jan 30, 2003 7:00 pm
Location: York, Nr. Caledonia, On.

Re: 1931 Panther piston mod

Postby Ray Roberts #115 » Sat Dec 15, 2012 9:40 pm

I did think about that Dave but then thought whats the point? since those pictures I did machine a few narrow grooves in the upper part.
Ray.
Ray Roberts #115
 
Posts: 319
Joined: Thu Jan 20, 2011 2:30 pm


Return to Projects

Who is online

Users browsing this forum: No registered users and 6 guests