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Brian Watkinson
Nov 17, 2017 - 1:45PM
Re: Removing old treadmaster!

Jack Norie
Brian, You are in part right.

The floor panels were not primed as per the rest of the body. They were, though, light etch primed at PRV. Every alloy sheet component was coated with a clear coat of etch primer. Very hard to distinguish unless a treated and untreated panel is placed side by side. Appeared colourless but was a very slight dull silver grey.
As far as I recall, it was only the floor panels that were not primed in Pink as it impaired the bonding of the Treadmaster.

It can be more noticeable now from aged original panels where the paint has flaked . It looks like the alloy has been smoked. Later fitted panels were not treated this way, most simply primed in Chiswick Pink or stove enamelled and later still not even that.

One of the reasons some restorations have had corrosion issues is that the preparation of panels and joints has not been a 2 part process before top coating and not both sides of panels.
Yes you are right Jack I'd forgotten the new floor sections were a grey colour, as were the cover strips, but this was not done at Aldenham on the new 4 bay floor sections between the footstools nor on the platform sections, they were left bare, but the interior top hat sections were as you say stove primered in the Bonderiser!!.

Good to see although we were not always up to speed on "modern methods" that the use of a sharp scraper really is the best way of getting treadmaster up! We tried white spirit once after getting the bulk of the Treadmaster up, we had a bin full of black oily swabs and it looked great, we put the slats down and they all came unstuck again ;( Meaning wee had to clean the floor again with soap and water to remove the residue of the solvent and try again, taking twice as long!

My bus number (if any): RTL 960, RMC 1458, RM 1585 and several RTs

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Nov 17th, 2017 - 1:45 PM
j
Jack Norie
Nov 17, 2017 - 7:21PM
Re: Removing old treadmaster!

Glasurit do a product called spirit wipe.

It removes all grease residue and white spirit residue for pre paint prep.

It works really well and has been around for decades now.

If you use that in conjunction with a tack rag before painting it will provide a dust and contaminant free surface.

Cellulose Thinners works but the fumes will get you. The fumes from Spirit wipe are lesser.

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