1973 GMC film 4

[@pedroteixeira4369]

Amazing to see how it is progressing. I want so much to buy one of these and restore it using a Tesla powertrain!

[@jmodic]

LOVE This like to see what the outcome is.

[@DetroitStorm]

That's awesome, great work

[@vicdemattia7452]

OMG, thats absolutely beautiful work.

[@TheLM1961]

thanks!

[@walterbright1396]

Wow! Where to begin. That’s amazing. I will need to watch this dozens of times to absorb all that is going on here. The frame work caught my eye as did the interior/ dash build. If you don’t mind, … 1. What kind of steel was used for the frame rails and bogie box? 2. What was the subfloor material? Really great work. Thanks for posting this.

[@TheLM1961]

1. the original frame rails are mild steel, which is not special, i used s235 steel, which is also not special, most commonly used structural steel, i looked here in the netherlands to see what comes closest in dimensions to the original, what has resulted in a rail that is 3mm higher and a wall thickness 1.5mm thicker. 2. for the subfloor I used what we call here in the Netherlands Betonplex (concrete plywood) it is plywood with a hard smooth top layer, it is widely used here for concrete formwork, and also as floors for trailers. Thanks for the nice comment,

[@sanderbertou1182]

Niet normaal wat je allemaal maakt. Rijdt hij al?

[@TheLM1961]

Ja hij rijdt al, en staat ook al op Nederlands kenteken, ik ben nu bezig met het inferieur, daarna moet hij enkel nog even terug naar RDW om gewicht aan te passen. bedankt voor de reactie.

[@sanderbertou1182]

@@TheLM1961 ben wel benieuwd naar je leeggewicht en laadvermogen. Ik zie zoveel verschillende gewichten bij nederlands geregistreerde GMC ‘s bij de rdw.

[@casbontekoning2110]

Hoi, Ik vroeg me af of je seafire/ Spitfire te koop was? Mvg Cas

[@TheLM1961]

Twee jaar terug heb ik deze verkocht.

[@casbontekoning2110]

@@TheLM1961 o jammer

[@michaelmatejka1489]

This might be such a dumb question and if that’s the case pls excuse my ignorance. Could one build the chassis from scratch in aluminum? Has anyone attempted this?

[@TheLM1961]

.As far as I know no one has done or tried that, of course it is possible, but aluminum takes a lot of know-how to do it right, it can easily lead to disaster, for example the fatigue resistance is very low, therefore it breaks quickly if it has to flex a lot, also electrolysis is a big problem so you have to isolate everything from other metals otherwise it will rot faster than steel. I think the cons outweigh the pros when it comes to chassis in my view. Greetings

[@michaelmatejka1489]

@@TheLM1961 Thanks for the detailed reply. I did not have electrolysis on my radar, which would probably be pretty severe where the c-profiles bolt to the front subframe. The work you have done is absolutely awesome. A full body off chassis is the only way to go (if you have the time and space). I am inspired by your work and want to do the same (still looking for the space to do it). I am also looking what can be approved upon. I have a couple of ideas. (1) aluminum, which you have made a great argument against (2) increasing the size of the profiles by 2 inches. That would raise the whole coach, but also give you more clearance in the front (3) stretch the wheelbase by 2-3 ft. Might sound crazy, but Boeing engineers worked on the body and aircraft makers do that all the time. Thanks for all your pioneering work….remarkable!