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Post by v8viento on May 18, 2009 12:41:01 GMT -5
How do I go about punching the holes in the bulkhead?
Paul
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Post by conwayz on May 18, 2009 23:41:34 GMT -5
I drilled mine with a hole saw and then used MDF formers (male and female) pulled together with a bolt to shape them. Needed two sizes but it worked fine for me and is quick/repeatable once the MDF formers are made up.
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Post by waitepapa on Jul 17, 2010 12:53:42 GMT -5
Hi Guys,
I'm new here. I have a very old set of plans and the book. Purchased in the 70's. After all this time I'm going to start and stop dreaming. My question is, am I right in assuming that the smaller holes in the bulkhead diaphragm are 1.5".
Great site with lots of answers. Well done guys. Thanks.
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Post by MiNiTiCi on Jul 17, 2010 14:21:56 GMT -5
I can't see the smallest holes dimensioned on the plans or in the book.
Assuming the Section A-A is drawn to scale with respect to the 1/2" dia. tubes then the holes would appear to be 1.5" diameter.
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Post by Terrapin on Jul 20, 2010 5:04:43 GMT -5
I used sheet metal punches (the type with a bolt through the middle which cut through the plate steel as you tighten them up). Plenty on Ebay. You only need to drill the guide hole for the bolt. Then I made some formers on the lathe (from lignum vitae) to press the radius onto the holes. It all worked very well. See photo Attachments:
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Post by Terrapin on Jul 20, 2010 5:12:34 GMT -5
Dimensions for the bulkhead holes are clearly marked on the plans Attachments:
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Post by MiNiTiCi on Jul 20, 2010 5:33:26 GMT -5
Dimensions for the bulkhead holes are clearly marked on the plans The dimension of the bottom holes must be in invisible ink - I can't see them. On the view of Bulkhead 2 - the tachometer hole is dimensioned as 3", the side holes are dimensioned as 2" but for the life of me I cannot see a dimension for the bottom holes. |
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Post by stifmeister on Jul 20, 2010 10:49:09 GMT -5
Doug, I can't see 'em either! I think we have to assume as you said before that the section A-A is for the bottom holes and are 40mm and the ones up the side are 2 inch (yes I can mix metric and imperial with the best of them!!).
I have to confess I haven't gone the "diaphragm" route as I will be adding side pods to hide some bits and pieces like radiators, oil cooler, battery etc. I've seen some other Terrapins like it and I think they stayed in one piece...
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Post by MBEngineering on Jul 21, 2010 3:24:19 GMT -5
HI all
I have had a look on what I have hear and the only thing I can find is a photo on page 63 of the car with the front removed and shows the holes in the inst' bulkhead with large holes in the bottom?? has any one with a early car any photos to confirm hole size, will do some more checking as my plans where last up dated in 79?
regards mike
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