Home 
Home Search search Menu menu Not logged in - Login | Register
> Jensen Healey & Jensen GT Tech > Body & interior stuff > Alternative convertible top securing

 Moderated by: Greg Fletcher
New Topic Reply Printer Friendly
Alternative convertible top securing  Rating:  Rating
AuthorPost
 Posted: 03-27-2013 08:18 pm
  PM Quote Reply
1st Post
answerman
Member
 

Joined: 09-10-2012
Location: Little Chute, Wisconsin USA
Posts: 381
Status: 
Offline
OK, one of the many things on my rapidly expanding "to do" list for Ms. Jenavieve is to figure out the soft top.  It's in very nice condition, obviously not the original unless the POs took really good care of it.  However, it doesn't seem to fit quite right which lends precedence to my thoughts that it's an aftermarket.  It's way tight in back, to the point where I can't even get it to stay secured to the horizontal Velcro strips... it just pulls off when I latch the front.

I have studied the way it is supposed to secure in the rear with the press studs (or "snaps") and Velcro.   The studs in particular seem to make no sense to me as they really don't offer much "shear strength", meaning that they come unsnapped very easily.  Plus, they are a real pain to get snapped in the first place.

I was looking over my boat a few days ago (also getting ready for spring) and noticed the spinning latch studs used to secure the cover.  After doing a bit of Googling, I found that they are apparently called "curtain fasteners" in the industry:

http://www.sailrite.com/common-sense-fastener-2-screw-stud

Now these make more sense to me, as the ring which would be crimped to the top would just slide over the stud, and then a quarter turn to keep them from popping off.

Anyone ever considered such a thing?  It seems way more secure than the snap and Velcro method.   I would replace the 5 snaps on the car with the curtain fasteners, and also maybe one or two on each of the horizontal part of the top where the Velcro currently is, assuming that they wouldn't cause clearance problems with the moving parts.

Last edited on 03-27-2013 08:19 pm by answerman

Back To Top PM Quote Reply  

 Posted: 03-27-2013 11:52 pm
  PM Quote Reply
2nd Post
Jensen Healey
Super Moderator


Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 976
Status: 
Offline
A shrunken vinyl top will never fit properly. Most aftermarket tops are copies of shrunken original tops so they don't fit either.
The only top that fits is the Robbins top. It is sold at the club store on this website.
My Ebay canvas top is a lousy fit and impossible to stow completely due to the rollbar.
Kurt

Back To Top PM Quote Reply

 Posted: 03-28-2013 01:09 am
  PM Quote Reply
3rd Post
DDrake
Member
 

Joined: 05-09-2011
Location:  
Posts: 36
Status: 
Offline
I agree that you most likely have a shrunken top .My 10 year old Robbins was shrinking width wise ,length was not a problem as it gets put up everyday so stayed stretched .

My New Robbins top doesn't fit all that well either ,doesn't come down low enough to trap the side glass .(but that another story )

The fasteners you were considering I have know as "Common Sense Fasteners " a term I thought appropriate .The big disadvantage I see is that they stick up so high and installing them in that thick vinyl would be a bear of a job .I'm a boater as well and have a couple of these in the cockpit holding up a sheet bag and have lost some ankle skin to them from time to time .

I would suggest that your current snaps are worn out and  it might be easier to renew them

Back To Top PM Quote Reply  

 Posted: 03-29-2013 01:09 pm
  PM Quote Reply
4th Post
Dan (Florida)
Member
 

Joined: 03-16-2005
Location: Ormond Beach, Florida USA
Posts: 97
Status: 
Offline
I just replaced an old shrunken vinyl top on my 73  with a Robbins Canvas top (Rockauto.com) .  The front of the top never seems to be wide enough to cover the front bow but overall it came out pretty nice, even with no soft top experience.  What I don't understand is  my top has a curved steel bar sewn into the rear edge of the top that catches under two chrome fingers that hold it down.  There are no snaps along the rear edge of the top, only on the sides and around the windows.  The top cover has this bar installed as well.  The new top does not have this bar  installed  and must be removed from the old top and installed in the new one. I can't imagine not having that bar and catches and trying to secure a top with just  snap buttons and velcro.

A top can be loosened by unglueing the top from the front bow and reglueing it a bit looser ( allthough it might not look the same along the front edge).  Use contact cement and let it dry out  a bit before  applying.  You can also remove the top frame and elongate the mounting holes to allow the frame ot sit lower on the car. This also allows you to adjust out any sags later on.

FYI , I made a snap button installer out of a metal c clamp that works very well installing the button part of the snap.  The base part that the button sits in was JB welded (epoxy glue) to the foot plate of the clamp and the little rod driver was welded to the screw part of the clamp. It makes a nice job of riveting the button parts together, and can be used with the top installed on the car.

At any rate I would look into installing that bar and hold down fingers on the back of the top.

Dan

Back To Top PM Quote Reply

 Posted: 03-29-2013 06:22 pm
  PM Quote Reply
5th Post
answerman
Member
 

Joined: 09-10-2012
Location: Little Chute, Wisconsin USA
Posts: 381
Status: 
Offline
Oh. I think you misunderstood. I have the bar and holddown fingers... that's all that's holding the rear of the top on. The snaps and Velcro only hold down the inside to snug it tight, and that's where the problem is. Though the bar is there, it doesn't do anything for the corners and sides of the vinyl.

I may look into lowering the top a little, though. Problem is I'm already hitting my head on it (I sit tall) so I really don't want to make it any lower than I have to.

Back To Top PM Quote Reply  

 Posted: 03-30-2013 03:25 am
  PM Quote Reply
6th Post
DDrake
Member
 

Joined: 05-09-2011
Location:  
Posts: 36
Status: 
Offline
Great idea about elongating the tops side mounting bracket holes .
As you mentioned the header rail seems wider than the top fabric by approximately half to three quarters of an inch

Cheers
David Drake
73 JH

Back To Top PM Quote Reply

Current time is 09:10 pm  
> Jensen Healey & Jensen GT Tech > Body & interior stuff > Alternative convertible top securing Top




UltraBB 1.172 Copyright © 2007-2011 Data 1 Systems