Coming along
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Nice work!
Glen
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
06 Elise - Track pack
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
06 Elise - Track pack
-
Certified Lotus - Coveted Fifth Gear
- Posts: 1233
- Joined: 04 Aug 2014
Yellow zinc in just another option, like clear. There are kits that are available for the do it yourself person. I have used yellow on a bunch of items, like suspension components. Does not hide problems like paint or powder coating. It could be the plater I used, but I have some problems with the yellow turning dark and dull. It does not stand up to time as well as cad plating. The largest piece I ever had done was a live axle rear end housing. The nice thing is, it is easy to keep clean.
Rob Walker
26-4889
50-0315N
1964 Sabra GT
1964 Elva Mk4T Coupe (awaiting restoration)
1965 Ford Falcon Ranchero, 302,AOD,9",rack and pinion,disc,etc,etc,etc
1954 Nash Healey LeMans Coupe
Owning a Lotus will get you off the couch
26-4889
50-0315N
1964 Sabra GT
1964 Elva Mk4T Coupe (awaiting restoration)
1965 Ford Falcon Ranchero, 302,AOD,9",rack and pinion,disc,etc,etc,etc
1954 Nash Healey LeMans Coupe
Owning a Lotus will get you off the couch
- prezoom
- Coveted Fifth Gear
- Posts: 1337
- Joined: 16 Mar 2009
Shaun,
Who did the plating, and where are you?
I am also working on rear brake calipers at the moment, and am encountering so many problems and poor quality that I could cry. I have just noticed that the hand brake pads do not touch the discs uniformly and have traced this problem to the swinging levers (if that is the correct term) that are so poorly made that they do not touch the back of the handbrake pads evenly. I could file these levers to get even contact, but would then need to have them re-plated. Is this what you have done?
Richard Hawkins
Who did the plating, and where are you?
I am also working on rear brake calipers at the moment, and am encountering so many problems and poor quality that I could cry. I have just noticed that the hand brake pads do not touch the discs uniformly and have traced this problem to the swinging levers (if that is the correct term) that are so poorly made that they do not touch the back of the handbrake pads evenly. I could file these levers to get even contact, but would then need to have them re-plated. Is this what you have done?
Richard Hawkins
- RichardHawkins
- Coveted Fifth Gear
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- Joined: 05 Jul 2008
These yellow tinged coatings are usually a Di-Chromate Zinc conversion coating, which is a microscopically thin rust preventative layer deposited in a room temperature chemical bath. "Clear" (light gray) chromate zinc conversion coatings are also available, and you often see these on brake disks. Conversion coatings have a very limited life, and in weather or salt environments they quickly corrode away. Zinc electroplating or hot dip Zinc galvanizing each provide much more protection. Sometimes the surface of a Zinc Plating layer is converted with Chromate or Di-chromate to increase corrosion resistance, and increase the time before the zinc layer becomes powdery. Now days some restoration shops use a paint layer that is roughly the same colour as di-chromate to simulate the look and increase the longevity of the surface. You see this under the hood of many restored 1960's Mercedes now days, but to my eye it looks very odd.
1963 Unicorn
1964 S1
1965 S2
1967 S3 SE DHC
Frankentwincam 26R
Seven S2 A
Seven S2 F
1964 S1
1965 S2
1967 S3 SE DHC
Frankentwincam 26R
Seven S2 A
Seven S2 F
- knockoffnut
- Third Gear
- Posts: 227
- Joined: 02 Sep 2011
Hi Shaun
Everything's looking good a part from the bolts. No offence but you can not use high tensile bolts that have been zinc passivated they suffer from hydrogen embrittlement - its a serious problem if stressed your caliper it could just fall in two.
That goes for any other passivated high tensile bolts you may have used on the suspension etc
Change the caliper bolts for 12.9 cap heads with the correct shank length.
Regards
Steve
Everything's looking good a part from the bolts. No offence but you can not use high tensile bolts that have been zinc passivated they suffer from hydrogen embrittlement - its a serious problem if stressed your caliper it could just fall in two.
That goes for any other passivated high tensile bolts you may have used on the suspension etc
Change the caliper bolts for 12.9 cap heads with the correct shank length.
Regards
Steve
- patrics
- Fourth Gear
- Posts: 593
- Joined: 21 Sep 2003
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