PNM engineering rear brake calipers

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Re: PNM engineering rear brake calipers

Postby Rice crispy » Mon 15.07.2013, 23:00

Finally got the car back today after 2 weeks of waiting :( missed the summer nearly :lol: brakes feel very different :? i now have a fair amount of pedal travel and much more feel, just need to get confident with them and get used to them.

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Re: PNM engineering rear brake calipers

Postby Rice crispy » Mon 22.07.2013, 12:39

Well they haven't lasted long :x offside caliper has started to leak from the seal :( spoke to Peter and he is sending another caliper and want the old one back asap to check. Hope this one doesn't take as long to arrive as they were 2 weeks late last time and that they can suffer same as Hi-spec's

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Re: PNM engineering rear brake calipers

Postby Steve A » Mon 22.07.2013, 22:37

Is the hand brake mechanical or Hydraulic like the Hi Spec ?
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Re: PNM engineering rear brake calipers

Postby Rice crispy » Mon 22.07.2013, 22:52

Steve no idea I didnt ask see link below. I believe its mechanical as I asked Peter if they were like the hi spec upgrade and he said no and that they wouldn't suffer like them. However it appears they do http://www.pnmengineering.com/lotus-ela ... rakes.html
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Re: PNM engineering rear brake calipers

Postby Fredjohn » Tue 23.07.2013, 06:40

Steve A wrote:Is the hand brake mechanical or Hydraulic like the Hi Spec ?


Unless I am very much mistaken C&U regs require handbrakes to have a different operating sysytem to the brakes. So both PNM and Hi-Spec are mechanical, even if they do both operate on the same piston that the hydraulic brake system uses.
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Re: PNM engineering rear brake calipers

Postby Rice crispy » Sat 27.07.2013, 12:52

Replaced caliper again today
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Re: PNM engineering rear brake calipers

Postby rip » Sat 27.07.2013, 15:29

lansledj wrote:Well they haven't lasted long :x offside caliper has started to leak from the seal :( spoke to Peter and he is sending another caliper and want the old one back asap to check.

That's disappointing.
Hopefully this is either a 1-off defect or something which can be fixed with a slight modification?
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Re: PNM engineering rear brake calipers

Postby Rice crispy » Sat 27.07.2013, 22:04

Peter assures me that it was a one off :?: and its not happened before. All I can do is wait and see. I've noticed that a part of the caliper is painted ?? Not sure why it is if its new unless its to cover markings from its original purpose
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Re: PNM engineering rear brake calipers

Postby rip » Wed 31.07.2013, 22:45

A few questions about these:

Was the leaky piston a 1-off?
What is the handbrake travel like & how well does it hold?
How do the dynamic brakes perform?
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Re: PNM engineering rear brake calipers

Postby Rice crispy » Wed 31.07.2013, 23:09

Rip, replacement seems fine :D so I assume it was a one off. Handbrake is just like standard and appears to work fine, lastly the feel is much better than with hispecs only on the front. Best way to explain it is they now feel like modern brakes. The pedal travel is longer but there is plenty of feel now. Happy to let you try mine when I next see you.

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Re: PNM engineering rear brake calipers

Postby rip » Thu 01.08.2013, 07:10

lansledj wrote:Handbrake is just like standard and appears to work fine,

Isn't that a contradiction? My std handbrake (well, on my Dorman calipers anyway) is pathetic. Anyone who was at Nick & Kim's wedding last year will remember it rolling across the car park & there is a huge amount of handbrake travel before it engages. Any improvement on this will be warmly accepted.
& my current rear brakes nearly caused my Elan to fail its MOT this year so I am very tempted by a set of these.
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Re: PNM engineering rear brake calipers

Postby Rice crispy » Thu 01.08.2013, 08:07

Mine handbrake was fine before as well though :shock: so its not easy to tell difference. It feels no different to apply and holds well
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Re: PNM engineering rear brake calipers

Postby Fetnas » Sat 03.08.2013, 13:37

Does anyone have an idea of the original source of the calipers PNM have used? As I'm on the other side of the planet, I'd like to try to find a pair locally and make up the necessary other bits. That said, the convienance of having a complete kit is tempting.

I have had my elan roll out of a carpark on a slight incline in Wales when the hand brake let go, I don't want that to happen again!
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Re: PNM engineering rear brake calipers

Postby GeoffSmith » Sat 03.08.2013, 14:17

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Re: PNM engineering rear brake calipers

Postby muley » Sat 03.08.2013, 15:06

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Re: PNM engineering rear brake calipers

Postby Fetnas » Sun 04.08.2013, 01:54

That's great, thanks Geoff & Muley. Now to keep an eye on Ebay for a set.
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Re: PNM engineering rear brake calipers

Postby Kragel » Thu 12.09.2013, 13:59

I just got my kit as my old calipers had died I was not happy :( with my kit as it did not fit properly. The pads over hanged the discs by 8mm PNM said this was ok but I will not fit It on my car.
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Re: PNM engineering rear brake calipers

Postby Scott J » Thu 07.11.2013, 20:31

Dorman calipers given up the ghost, handbrake been non existent for 12 months. Winged MOT last year but not this time. So are these a straight fit with standard read hubs & 16' wheels. I have AP calipers on front.

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Re: PNM engineering rear brake calipers

Postby rip » Thu 07.11.2013, 20:52

Scott J wrote:Dorman calipers given up the ghost, handbrake been non existent for 12 months. Winged MOT last year but not this time.

Almost the same with mine. I'm not looking to replace rather than refurb.
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Re: PNM engineering rear brake calipers

Postby Scott J » Sat 09.11.2013, 15:19

got some adjustment out of handbrake and just squeezed through MOT but looking to these PNMs come the spring.
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