Should i get my chassis galvanised?
Poll: Should i get my chassis galvanised?
Total Members Polled: 47
Discussion
The bits that need the most protection are the parts of the outriggers that the body sits on. These areas tend to stay wet for much longer & are at greater risk of stone damage. For me, if I was doing a Griff/Chim I would go Galv. Quite a few been done now without a problem.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It would be interesting to find out if anyone has experienced distortion. All we've heared on here is good reports so far.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It would be interesting to find out if anyone has experienced distortion. All we've heared on here is good reports so far.
Good point.
We hear a lot of reports of a chassis galvanized with no problem.
Ive yet to hear of 1 example where a chassis has been distorted.
Another point made is the additional weight the process adds... just how much do we reckon? I can cope with an extra 30 kg or so if it comes to that. Thats only a couple of bhp.
We hear a lot of reports of a chassis galvanized with no problem.
Ive yet to hear of 1 example where a chassis has been distorted.
Another point made is the additional weight the process adds... just how much do we reckon? I can cope with an extra 30 kg or so if it comes to that. Thats only a couple of bhp.
I wouldn't do it simply because of the need to drill holes all over it, that is only going to cause other issues - IMO.
I would use the closest I could find to the old fashioned "red lead" primer(as used on oil rigs years ago) and Hammerite over that, that would outlast everything else on the car
I would use the closest I could find to the old fashioned "red lead" primer(as used on oil rigs years ago) and Hammerite over that, that would outlast everything else on the car
pwd95 said:
Well don't post a link to someone who hasn't taken any measurements, hasn't rebuilt his car so hasn't found lack of fit in reassembly, hasn't yet found the fun in fitting bushes into galvanised sleeves which are now smaller and rougher... each to his own I guess.JR said:
pwd95 said:
Well don't post a link to someone who hasn't taken any measurements, hasn't rebuilt his car so hasn't found lack of fit in reassembly, hasn't yet found the fun in fitting bushes into galvanised sleeves which are now smaller and rougher... each to his own I guess.http://www.pistonheads.com/gassing/topic.asp?h=0&a...
dbv8 said:
Another point made is the additional weight the process adds... just how much do we reckon? I can cope with an extra 30 kg or so if it comes to that. Thats only a couple of bhp.
1000kg car with 500 bhp = 0.5 bhp per kg.30kg extra weight = 15 bhp...
Could make all the difference...
shpub said:
dbv8 said:
Another point made is the additional weight the process adds... just how much do we reckon? I can cope with an extra 30 kg or so if it comes to that. Thats only a couple of bhp.
1000kg car with 500 bhp = 0.5 bhp per kg.30kg extra weight = 15 bhp...
Could make all the difference...
Power at Flywheel (BHP) : 400
Weight without Driver (KG) : 1000
Power to Weight Ratio (BHP Per Ton) : 406.42
0 - 60 (Secs) : 3.48
0 - 100 (Secs) : 7.88
60 - 100 (Secs) : 4.41
Quarter Mile (Secs) : 11.68
Terminal Speed (MPH) : 121.70
Drag Strip Quarter Mile (Secs) : 11.58
Drag Strip Terminal Speed (MPH) : 123.11
Power at Flywheel (BHP) : 400
Weight without Driver (KG) : 1030
Power to Weight Ratio (BHP Per Ton) : 394.58
0 - 60 (Secs) : 3.52
0 - 100 (Secs) : 7.97
60 - 100 (Secs) : 4.44
Quarter Mile (Secs) : 11.72
Terminal Speed (MPH) : 121.30
Drag Strip Quarter Mile (Secs) : 11.62
Drag Strip Terminal Speed (MPH) : 122.71
Power at Flywheel (BHP) : 408
Weight without Driver (KG) : 1030
Power to Weight Ratio (BHP Per Ton) : 402.48
0 - 60 (Secs) : 3.49
0 - 100 (Secs) : 7.86
60 - 100 (Secs) : 4.37
Quarter Mile (Secs) : 11.68
Terminal Speed (MPH) : 121.88
Drag Strip Quarter Mile (Secs) : 11.58
Drag Strip Terminal Speed (MPH) : 123.30
I admit that 8 bhp is a significant loss however.
Maybe a slightly bigger nitrous jet is required
pwd95 said:
TVR_owner said:
Was the Chim in the TG thread not a victim of a twisted chassis as a result of Galvanising?
We need anyone who's experienced warping to step forward. 
Biggest issue from my point of view as a engineer is the prep work I.E ensuring the galvanic process does not allow it to explode inside your chassis, If it were me I would be drilling the holes myself in the correct places to ensure this will not happen. As for your chassis coming back distorted i don’t really see it i work in a subsea environment and particularly in my last work place sent of various equipment to get this treatment and i have never seen a issue yet with it coming back out of shape or distorted( Not saying it can not happen). As long as it can escape out the of the inside it will be fine. And you will have a car that will outlive you i think it is the way i would go IMHO
scotty_d said:
Biggest issue from my point of view as a engineer is the prep work I.E ensuring the galvanic process does not allow it to explode inside your chassis, If it were me I would be drilling the holes myself in the correct places to ensure this will not happen. As for your chassis coming back distorted i don’t really see it i work in a subsea environment and particularly in my last work place sent of various equipment to get this treatment and i have never seen a issue yet with it coming back out of shape or distorted( Not saying it can not happen). As long as it can escape out the of the inside it will be fine. And you will have a car that will outlive you i think it is the way i would go IMHO
Scotty,Sub sea environment? Would that not have large corrosion allowances (depite protective coating) and therefore be more esubstantial than a 10-15 year old TVR chassis that is already suffering from corrosion (despite the externally corroded parts being replaced).
Hi TVR_Owner
They have Corrosion allowances in a ideal world say oil rig’s would be built out of marine grade 316 or Galvanised but that cost’s and very heavy ,next best thing is CP -Cathodic protection with as you correctly said protective coating’s They are different methods of CP which I will not go in to but unfortunately they only work in a salt water due to the requirement of electrolyte to act as a conductor for these CP systems or we would all just bolt Anodes to our cars and job done. But what I used to do was design cathodic protection systems and other systems to prevent and reduce the corrosive process so have a fair understanding of what happens to various metals throughout the galvanic table in a salt water environment and subsea. On certain equipment our clients galvanised components and we monitor and advise them on the condition and corrosion levels and galvanising components In my opinion is a very good thing and certainly shows in the hashed environment in the world that affects Metals.
Now I know we are talking old Tvr Chassis here but applying zinc to already tired metal will almost stop it corroding further in a Air environment Which In my opinion is a very good this and from some of the kit i used to build to work in subsea that I had galvanised it lasted and is still being used to this day and spends half its life under water. But that is just my experience and backing up why i know it is a good process if done correctly.
They have Corrosion allowances in a ideal world say oil rig’s would be built out of marine grade 316 or Galvanised but that cost’s and very heavy ,next best thing is CP -Cathodic protection with as you correctly said protective coating’s They are different methods of CP which I will not go in to but unfortunately they only work in a salt water due to the requirement of electrolyte to act as a conductor for these CP systems or we would all just bolt Anodes to our cars and job done. But what I used to do was design cathodic protection systems and other systems to prevent and reduce the corrosive process so have a fair understanding of what happens to various metals throughout the galvanic table in a salt water environment and subsea. On certain equipment our clients galvanised components and we monitor and advise them on the condition and corrosion levels and galvanising components In my opinion is a very good thing and certainly shows in the hashed environment in the world that affects Metals.
Now I know we are talking old Tvr Chassis here but applying zinc to already tired metal will almost stop it corroding further in a Air environment Which In my opinion is a very good this and from some of the kit i used to build to work in subsea that I had galvanised it lasted and is still being used to this day and spends half its life under water. But that is just my experience and backing up why i know it is a good process if done correctly.
Edited by scotty_d on Tuesday 15th December 11:42 cos my Grammar is poor i know
Edited by scotty_d on Tuesday 15th December 11:51
TVR_owner said:
Sorry for laughing Scotty, but I just a had a vision...a Chim chassis with sacrifical anodes plastered down the out riggers
Yeah then it would be a adverse affect you can over protect too you know you only need a couple for the size of a chim chassis
Edited by scotty_d on Tuesday 15th December 12:01
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