[quote="DrJeep
yellowfoden wrote:I expect all these larger braces to coincide with models having tow guides.
Sorry, Bert - I have one without a tow guide but with larger wheel support braces. It's the one like Jason's, with either a small or no rivet. The braces were changed after the cab wall was changed, but before the tow guide was added.Glenn[/quote]
Hi Glenn, Thanks for responding to Kevins post, for some reason I was unable to log back in to explain that the straight cab is the early code.
Now given that I have …
curved cab, with small axle braces and NO tow guide
and
curved cab, with small axle braces with a tow guide
and
curved cab, with large axle braces with tow guide
it got me thinking if yours and Jason’s are:
curved cab, with large braces, with tow guide
then perhaps it is not a rivet in the roof that you suggest is smaller, but is the remains of a stud due to the die being clogged up.
At the point in production they would not have worried about this problem because the rivet or stud didn’t really serve any purpose because glazing was held in by top of the grille/base plate.
It is worth noting here that anybody looking at this model and using Nick’s guide and comparing it to say Stannards (or Christian’s) guides will be quite confused because they are reversed in order when it comes to roof rivets.
I have been trying to recall if I have seen anywhere discussed or mentioned that the
base plate differs in the very first casting where glazing is held in by a rivet that is spun/flattened/burred over.
Stannard shows this rivet as a drawing and Nick mentions it in description
however there is no reference to the shape of the base plate.
But the key to all this is that the first casting has a base plate that
does not come into contact with the glazing. That is why it is held by a rivet that has been tool finished.
Then they changed the shape of the base plate with two support posts to provide support to the glazing and the rivet and stud became then became a location or direction part.
That is why on the 47c DAF tipper we see no rivet, no stud just a hole in the glazing for the complete life of the model.
Also worth noting that 58c came out 2-3 months ahead of the 47c in 1968 and all of the glazing in both models are cast with 47/58 on them.
If I look at the inside of the cab with eye loupe I can see a flaw in the side of the stud and would not surprise me that some exist that are broken.
Given the stud did not serve a purpose I see it quite feasible that a blob of weld into the hole in the die could have been an easy solution to get rid of the stud.
I do not think there is an EARLY casting with a NO rivet flat roof in the regular wheel 58c.
Bert
ps apologies about the quality of photo, my camera wants to autofocus on the windows instead of the inside base plate