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mikedjames
Samba Member
Joined: July 02, 2012
Posts: 2745
Location: Hamble, Hampshire, UK
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 Posted: Sun Jul 03, 2022 1:12 pm Post subject: Re: Popup canvas too tight; wont fully open |
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When you get the fiberglass repaired, its likely the repair will be thicker than the original, so the bars will fit even worse. .
Cut two inches out of the top bar, and sleeve it with another tube whose inside diameter is just larger than the outer diameter of the bar.
Use a length of outer tube sufficient to allow for strength when overlapped: say 6 inches overlap.
Then you can drill and pin it with a pair of cross bolts, and then redrill a new hole in the inner bar e.g 2 inches further along to move it inside the outer tube if you ever get a canvas that fits.
Make sure when you cross drill e.g. the bottom bar, that if you need to move it down 2 inches, the old cross drilled hole is still well inside the sleeve (so the bar does not buckle with the old hole outside the sleeve) , and at the same time, the new hole in the inner bar is still in the metal, so there is something to bolt through.
Or make up something with a marine rigging bottle screw welded to a bar that allows you to adjust the length of the bar using a pair of opposite threaded screws.
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Ancient vehicles and vessels
1974 VW T2 : Devon Eurovette camper with 1641 DP T1 engine, Progressive carb, full flow oil cooler, EDIS crank timed ignition.
Engine 1: 40k miles (rocker shaft clip fell off), Engine 2: 30k miles (rebuild, dropped valve). Engine 3: a JK Preservation Parts "new" engine, aluminium case: 26k miles: new top end.
Gearbox rebuild 2021 by Bears.
1979 Westerly GK24 24 foot racer/cruiser yacht Forethought of Gosport.
1973 wooden Pacer sailing dinghy |
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Globespotter
Samba Member
Joined: February 16, 2012
Posts: 1770
Location: Newmarket, ON
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cochran242
Samba Member
Joined: March 26, 2022
Posts: 57
Location: CO
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| Posted: Sun Jul 03, 2022 9:55 pm Post subject: Re: Popup canvas too tight; wont fully open |
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well, i am patched up. looks good. now i will think through my plan of attack for the bars.
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orwell84
Samba Member
Joined: May 14, 2007
Posts: 2539
Location: Plattsburgh, New York
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| Posted: Mon Jul 04, 2022 9:26 am Post subject: Re: Popup canvas too tight; wont fully open |
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| It’s kind of too late for the advice I would give you, but don’t despair. This shit can be difficult and two steps back for every step forward is not unusual…I have messed up so many things before finally getting it right. I was lucky enough to have my old canvass, so measuring the corners fit me in the ballpark and I have an early Westy, which is easier. Hang in there. |
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danfromsyr
Samba Member
Joined: March 01, 2004
Posts: 15144
Location: Syracuse, NY
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| Posted: Mon Jul 04, 2022 12:29 pm Post subject: Re: Popup canvas too tight; wont fully open |
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we have had one we had to shorten the bars for..
really it's so far from the end of the world.. and really not a concern for the next replacement that'd be in what 30~40 yrs from now? who's to say that'll fit right too/either.
we had one where it was shorter in circumference on the bottom hem.
this meant that as we we're putting it on (for a friend) that after we stapled the top all nice and fine.. that the bottom hoop no longer fit...
so we'd either have to remove it file a service complaint and await when/if we received a replacement. all the while having to keep it indoors occupying my shop.
or we shortened the lower aluminum trim and inch and half, drilled a new series of rearmost holes and went camping that and each following weekend.. life goes on.. perfection is best saved for heaven anyways.
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cochran242
Samba Member
Joined: March 26, 2022
Posts: 57
Location: CO
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| Posted: Mon Jul 04, 2022 2:49 pm Post subject: Re: Popup canvas too tight; wont fully open |
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Well I got it... I will explain what I did here for the next sorry soul
[list=]
with the brackets in place I pushed the popup as far as it could go and measured the distances between the mounting bracket at the top and the mounting bracket at the metal. For me this was 41.5 to 41.626 (41 5/ .
I then removed the bracket and extended it all the way and measured it... for me it was 42.5.
I was 1" off. With that in mind, I decided I could NOT cut the poles, but drill new holes. I wanted to stay conservatives on my redrilling so it would remain taught. I drilled new holes 7/16 of an inch down from the original holes on top and bottom mounts.
Because now the poles are closer to the brackets, I ground a notch in the end of the poles in which the fiberglass mounts ar.. this allowed the welded in nut to clear.
I remounted everything... and..... another crack in the fiberglass on the other side.  Likely this was already there from when I was pushing too hard and broke the other side. Oh well, another night of fiberglass repair I guess. Either way, I am happy the top is on and works.
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Abscate
Samba Member
Joined: October 05, 2014
Posts: 22670
Location: NYC/Upstate/ROW
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| Posted: Mon Jul 04, 2022 5:59 pm Post subject: Re: Popup canvas too tight; wont fully open |
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Make sure you crack stop the cracks by drilling out the end with a decent size hole..8mm isn’t too large
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Globespotter
Samba Member
Joined: February 16, 2012
Posts: 1770
Location: Newmarket, ON
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CTSkim
Samba Member
Joined: February 20, 2008
Posts: 12
Location: Chester, CT
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| Posted: Tue Jul 05, 2022 4:24 pm Post subject: Re: Popup canvas too tight; wont fully open |
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Someone can correct me if I’m wrong as it’s been a quite a while since I’ve pulled my canvas off for restoration (and I have an early bay)
…… but I don’t believe that rubber bulb should be visible on the inside of the aluminum track, Mine was concealed under the aluminum…
Again I’m not sure if this will give you enough room to open it, however from my years of installing convertible tops, a 1/2” there is a mile on the other side! |
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skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16883
Location: sticksville, ct.
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| Posted: Tue Jul 05, 2022 8:39 pm Post subject: Re: Popup canvas too tight; wont fully open |
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the beading should be visible, at least in a stock installation
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