Discussion
Steve_D said:
We do lots of TVR chassis restorations and use a Hot Zinc Spray process prior to paint or powder coat.
https://www.youtube.com/watch?v=lArIQqCK4Es
The process only heats the metal locally so does not need vent holes.
Steve
Last OT, excuse me.https://www.youtube.com/watch?v=lArIQqCK4Es
The process only heats the metal locally so does not need vent holes.
Steve
I never seen firsthand "hot spray galvanizing" and ascertained how mutch is durable, I always think is similar to cold zinc!
But if they use it on car frame which it is in contact with road salt... nice info! Thanks!!!
Steve
Neat process
What thickness is the coating?
Neat process
What thickness is the coating?
Steve_D said:
We do lots of TVR chassis restorations and use a Hot Zinc Spray process prior to paint or powder coat.
https://www.youtube.com/watch?v=lArIQqCK4Es
The process only heats the metal locally so does not need vent holes.
Steve
https://www.youtube.com/watch?v=lArIQqCK4Es
The process only heats the metal locally so does not need vent holes.
Steve
UltimaFAN said:
For the 3 panels, I think of different reasons:
- one single panel would require anyway some rivets in the middle so that it doesn't bend
- the paneling is adding stiffness to the chassis, so rivets in the middle is a plus
- aluminium has a different thermal expansion than steel. With 20°C temperature difference on such length, it is not negligible.
Concerning the anodising of the alu panels, I did it for the panels under the car. They look smooth and beautifull, what I like is that they are not visible, as they are hidden below the car, I'm the only one who can see this. It is a similar situation than with my wife
The internal panels can't easily be anodised, as the must be hammered to follow the shape of the tubular chassis.
Thanks for reply- one single panel would require anyway some rivets in the middle so that it doesn't bend
- the paneling is adding stiffness to the chassis, so rivets in the middle is a plus
- aluminium has a different thermal expansion than steel. With 20°C temperature difference on such length, it is not negligible.
Concerning the anodising of the alu panels, I did it for the panels under the car. They look smooth and beautifull, what I like is that they are not visible, as they are hidden below the car, I'm the only one who can see this. It is a similar situation than with my wife
The internal panels can't easily be anodised, as the must be hammered to follow the shape of the tubular chassis.
It occurred to me to have one panel with a single line of rivets on every chassis member the panel touches.
Just means that on the chassis members where two panels come together you have one less line of holes.
As you mention maybe thermal expansion especially around any heat source.
I have just started to do my homework, hope to start a build late next year.
I would go the anodising route like yourself.
Neptune300 said:
Steve
Neat process
What thickness is the coating?
It can be spayed many times over but a normal coat is 80 micron.Neat process
What thickness is the coating?
In our case if you were to put any more on you will have assembly issues like getting suspension bush sleeves into the mounting ears.
When we first spoke with our finisher he could not understand why we wanted to paint or powder coat over the zinc saying they do the railings along Southsea sea front and don't use any other finish.
Steve
https://www.youtube.com/watch?v=iHjxal61xkM seems to work at normal speed
I really enjoyed that. It was probably targeted at my level of mechanical knowledge
Things wot I learned.. I had seen mention of the fuel tanks being triangular and I now get what folk ment and why I end up having to dribble fuel in at the end of a petrol stop and then why it seems to go down so quickly
All seemed quite easy to build tho. Can't quite see what the fuss is for you guys who do it at home and take months and months.
ps... that't the 1st time I have ever seen a rivet gun thingy being used as well. Every day is a school day
I really enjoyed that. It was probably targeted at my level of mechanical knowledge
Things wot I learned.. I had seen mention of the fuel tanks being triangular and I now get what folk ment and why I end up having to dribble fuel in at the end of a petrol stop and then why it seems to go down so quickly
All seemed quite easy to build tho. Can't quite see what the fuss is for you guys who do it at home and take months and months.
ps... that't the 1st time I have ever seen a rivet gun thingy being used as well. Every day is a school day
Edited by renmure on Saturday 31st December 23:25
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