Author Topic: 1970-71 E-Body Convertibles (Manual Top "Catch")  (Read 5320 times)

Offline plymth70

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #15 on: March 23, 2013 - 10:42:23 AM »
I have 3d data and a drawing. Looking for some one to make a tool. I'll let you know if I can find a shop to make them.




Offline filmsurgeon

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #16 on: March 23, 2013 - 05:39:18 PM »
I have 3d data and a drawing. Looking for some one to make a tool. I'll let you know if I can find a shop to make them.

That is VERY COOL! How did you do that? Depending on how soon you can get a shop to machine new pieces, I may end up having to get some from you. A couple of days ago, I began carving a new piece from the nylon bar stock. It was a bit of a learning experience at the start (first attempt to "cut out" the basic shape was not good). I ended up using only a variable speed dremel at its lowest speed with a cutting bit to cut and shape the new piece. It's turned out pretty good so far (I still have to carve out the area where the part is riveted to the spring steel leg). It's taken quite some hours so far, but I think the end results will be most satisfactory. I'll post pictures one I've completed the first piece.
1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

Offline BIGSHCLUNK

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #17 on: March 23, 2013 - 10:59:01 PM »
I'm curious to see how this turns out... my tabs are a bit worn too.
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Offline onebadpinkrt

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #18 on: March 24, 2013 - 08:09:01 PM »
i would really like to buy a few ( 4 ) if you ever find some to make them. i have 70 r/t manual top & power windows how rare is that,  thanks mark, ticklepinkrt@yahoo.com or (cell 585-704-0547) 

Offline filmsurgeon

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #19 on: January 22, 2014 - 03:56:56 PM »
Hello Everyone.  I know it's been a long time since the last post on this topic, but I wanted to report back on the latest progress.  I tried many months ago to make a new nylon piece from the nylon bar stock using a dremel and various cutting/carving bits.  I got close to finishing one piece, but decided to put the project on the "back burner" so I could work on other stuff the car needed.  The carving/cutting was very tedious and time consuming, and VERY messy (nylon shavings everywhere).  Toward the end of the year I decided to revisit the project.  Someone here posted a 3D image of the piece, and I thought about having my one good piece 3D scanned, and have it "printed" in nylon using a 3D printing service provider.  I researched 3D printing, and sourced a small company in the Los Angeles area that provided both scanning and printing.  Not all 3D printers can print using nylon (most print using ABS, or similar plastic materials).  Anyway, after my approval of the 3D images (see attached), the new pieces were printed, and I received the first pair several weeks ago, but they were slightly smaller in size compared to the original (probably due to cleaning up the 3D scan).  I provided caliper measurements of the new and original pieces, and asked if the 3D data file could be manipulated so that the dimensions matched the original.  The answer was "Yes".  The 3D scan file was adjusted and the new were pieces made.  I just got them today (see photos of new vs. old pieces).  The turnaround was relatively quick; and quite surprisingly, the cost was really not that bad.  3D scan was $25.00, and printing (2) pieces was $13.00 + $10.00 shipping (total = $48.00).  I also received the 3D data file (STL format), so I can send this to any 3D printing company and have more pieces made.  Let me know if anyone needs some.
1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

Offline CudamanTom

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #20 on: January 22, 2014 - 04:03:01 PM »
Wow!!!
That's pretty impressive. Thank you for sharing the findings and results.  :2thumbs:
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Offline hemiken

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #21 on: January 22, 2014 - 04:19:09 PM »
Well done, the pieces look close to being right and would pass off as being an acceptable replacement i think, what a simple solution to a part that was not available, good for you to help the guys who need these for the non-power top convertibles. :2thumbs:
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Offline 4Cruizn

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #22 on: January 22, 2014 - 04:58:01 PM »
Very cool!  Nice job!  That would not have been an option I would of thought of . . .3D printing!   :screwy:

Offline filmsurgeon

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #23 on: January 22, 2014 - 06:47:35 PM »
Very cool!  Nice job!  That would not have been an option I would of thought of . . .3D printing!   :screwy:

Technology is AWESOME!  Especially the internet.
1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

Offline filmsurgeon

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #24 on: January 22, 2014 - 06:56:04 PM »
Well done, the pieces look close to being right and would pass off as being an acceptable replacement i think, what a simple solution to a part that was not available, good for you to help the guys who need these for the non-power top convertibles. :2thumbs:

Thanks guys.  Measurement results (with the revised/adjusted dimensions) yielded the new pieces to be no more than - 0.03" from the original.  That's close enough.  Although they are not a 100% "perfect" match, they'd likely satisfy even the most critical critics.
1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

Offline JayBee

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #25 on: January 23, 2014 - 09:42:28 AM »
A big "WOW" from me too. You come up with some of the greatest solutions to restoration situations. I've used your speedometer mounting grommet solution so far. Keep up the good work. 
John

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Offline anlauto

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #26 on: January 23, 2014 - 10:10:09 AM »
You should have had a bunch done and sell them :2thumbs:
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Offline filmsurgeon

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #27 on: January 23, 2014 - 12:36:57 PM »
You should have had a bunch done and sell them :2thumbs:

I plan on placing an order for a small batch in the near future.  I'd like to let a little time pass in order to gauge the volume and level of interest from our community.  I will sell them, but only at a price to cover my cost.  I'm not looking to profit from this in any way whatsoever.  I've received a ton of help from members on this site, and on Moparts.  Selling them at my cost would be my way of giving something back to all those who have helped me.
1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

Offline filmsurgeon

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #28 on: January 27, 2014 - 02:29:06 PM »
I have been contacted by quite a few people (here and on Moparts) expressing interest in these new nylon pieces.  I will be placing an order soon to have a bunch made after I've figured out how many.  In the meantime, I will be getting back to all of you soon with responses to your messages.  Thank you for your interest.

BTW - Here are a few photos showing the new nylon catches attached with pop rivets to the spring steel legs.  I ended up having to slightly hone out the holes in the new pieces in order to get the 1/8" rivets through.  They didn't need much; just held a 1/8" drill bit in hand, and pushed it through while twisting, and then back and forth a few times.
1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

Offline anlauto

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Re: 1970-71 E-Body Convertibles (Manual Top "Catch")
« Reply #29 on: January 27, 2014 - 02:33:52 PM »
Moparts ?
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