fentuz Posted May 12, 2014 Share Posted May 12, 2014 For sprinting, I run Mintex 1155 because they heat up faster the performance friction. I found the mintex back plate is a lot thinner and a bit smaller than the one on PF and R14 and initially got the famous rattle. I found that if I turn around the caliper pad spring (AP spring blade - arrow dow rather than up) the rattle goes...and I'm happy again Link to comment Share on other sites More sharing options...
dobbo Posted May 12, 2014 Share Posted May 12, 2014 Hopefully sounds like a cure, Bill, but it begs the question - why is there an arrow on the spring ? I don't know, but there must be a reason ??? Actually, there probably isn't a reason - Lotus just used stuff from a parts bin and these springs just happened to have an arrow on them. Link to comment Share on other sites More sharing options...
fentuz Posted May 12, 2014 Author Share Posted May 12, 2014 I believe the spring changed; On early cars, the spring was symmetrical. On later car, it is offset with arrow. I think the spring constrain the pads in position. When it is up, I believe it constrains the top of the pads more creating a natural taper for the disc to get/channel in. Putting the arrow down may reduce this taper but it would probably be recreated by natural wear. I'm saying that because I noticed that the top on my pads used to be a little worn out than the bottom. Link to comment Share on other sites More sharing options...
Steve J Posted May 12, 2014 Share Posted May 12, 2014 If I remember correctly on the S1 the spring always went on upside down. Link to comment Share on other sites More sharing options...
Dennis Posted May 12, 2014 Share Posted May 12, 2014 You could get sticky little pads that go in the calipers see item 15 http://www.deroure.com/diagrams.asp?TBL=1281&MAK=1&MDL=13&SMA=0&SMO=0&ST=&SC=0 I also put some mintex sticky rubber pads on to the back of the pagid's so the pistons have something to 'bight' into http://www.ebay.co.uk/itm/MINTEX-CERATEC-LUBRICANT-GREASE-AND-4-ADHESIVE-ANTI-SQUEAL-BRAKE-PAD-SHIMS-SHIM-/251292559571?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a823428d3 Link to comment Share on other sites More sharing options...
fentuz Posted May 13, 2014 Author Share Posted May 13, 2014 Dennis, these little caliper housing pads don't work for long. I tried them 7-8 years ago, they used to come off in winter or on track day. The rattle doesnot happen with RS14/RS42 or PF when copper grease is apply on the back of the pad. I did many trackday like that and in my experience, it works very well. I believe rattle in worse with mintex due to the thinner metal back plate; I would guess that why they supply or at least used to supply the 3m rubber pad. with use, the rubber pad gets shape with the pot print keeping the pad a little constrained on the pots. 1155 is not supplied with rubber pad and I cannot be bother to grind a small groove for the pot to engage in. Link to comment Share on other sites More sharing options...
Dennis Posted May 13, 2014 Share Posted May 13, 2014 Dennis, these little caliper housing pads don't work for long. I tried them 7-8 years ago, they used to come off in winter or on track day. The rattle doesnot happen with RS14/RS42 or PF when copper grease is apply on the back of the pad. I did many trackday like that and in my experience, it works very well. I believe rattle in worse with mintex due to the thinner metal back plate; I would guess that why they supply or at least used to supply the 3m rubber pad. with use, the rubber pad gets shape with the pot print keeping the pad a little constrained on the pots. 1155 is not supplied with rubber pad and I cannot be bother to grind a small groove for the pot to engage in. Not had an issue with the lotus supplied buffers but there again I rarely go on track so the calipers don't get too hot You can buy the rubber things mintex used to supply with their pads separately, see my second link Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.