Coming along

PostPost by: shaun » Sat Jun 10, 2017 5:43 pm

Brakes rebuilt , and fitted for a dummy strut build
Attachments
img_0055.jpg and
img_0051.jpg and
img_0054.jpg and
img_0053.jpg and
shaun
Second Gear
Second Gear
 
Posts: 223
Joined: 30 Nov 2008

PostPost by: RedS4 » Sun Jun 11, 2017 4:19 am

Beautiful! 8) What colour is that on the calipers? Who makes it?
Evan J
Elan S4 FHC RHD 36/8569 AND White Evora S..
User avatar
RedS4
Third Gear
Third Gear
 
Posts: 261
Joined: 20 Aug 2009

PostPost by: shaun » Sun Jun 11, 2017 7:18 am

The calipers are zinc pasivated
shaun
Second Gear
Second Gear
 
Posts: 223
Joined: 30 Nov 2008

PostPost by: Certified Lotus » Sun Jun 11, 2017 9:29 am

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
User avatar
Certified Lotus
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1233
Joined: 04 Aug 2014

PostPost by: RedS4 » Sun Jun 11, 2017 10:25 am

Did you do that yourself?
Evan J
Elan S4 FHC RHD 36/8569 AND White Evora S..
User avatar
RedS4
Third Gear
Third Gear
 
Posts: 261
Joined: 20 Aug 2009

PostPost by: prezoom » Sun Jun 11, 2017 2:21 pm

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
prezoom
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1332
Joined: 16 Mar 2009

PostPost by: RichardHawkins » Mon Jun 12, 2017 3:49 pm

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
RichardHawkins
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1206
Joined: 05 Jul 2008

PostPost by: knockoffnut » Wed Jun 14, 2017 4:19 pm

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
knockoffnut
Third Gear
Third Gear
 
Posts: 227
Joined: 02 Sep 2011

PostPost by: patrics » Tue Jun 20, 2017 8:23 pm

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
patrics
Fourth Gear
Fourth Gear
 
Posts: 593
Joined: 21 Sep 2003

PostPost by: RichC » Wed Jun 21, 2017 9:26 am

I don't see any retaining wire thru the bolts :?:
User avatar
RichC
Fourth Gear
Fourth Gear
 
Posts: 829
Joined: 28 Apr 2009

PostPost by: shaun » Wed Jun 21, 2017 10:30 am

All bolts are only nipped up , fully tightened when assembled on chassis . Thanks for the info on the zinc plated bolts
shaun
Second Gear
Second Gear
 
Posts: 223
Joined: 30 Nov 2008

Total Online:

Users browsing this forum: No registered users and 12 guests