For those who have gone 2pot in the rear- parking brake - LotusTalk - The Lotus Cars Community
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post #1 of 15 (permalink) Old 02-26-2019, 05:14 AM Thread Starter
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For those who have gone 2pot in the rear- parking brake

Hey guys, so after making the move to adding a pair of OE Brembo 2-pots to the rear for better braking, I wasn't too pleased with having an additional 8lb parking brake caliper attached to each upright. I use my car for auto-xing with the SCCA and in SSM we're required to keep a hand brake. I saw pictures on here and the web of a light weight alloy brake and after a bunch of sleuthing, I finally found the guy who makes and sells them.

If you want a set, they are made by Frank Jakos. email: [email protected]
They are $620.00 shipped.

They weigh a little over 3lbs a piece so it's about an 11lb weight savings for both calipers.

Install was really straightforward. There is a nut on the backside of the caliper (seen in the last pic) that is used to adjust the position of the floating caliper so that after you adjust your cable length, the pads will float about .010 (use a feeler gauge) off the rotor for no drag.

I'm using the EP uprights with a 16mm offset hub position so I had to add a few washers behind the bolts that mount the calipers. If I didn't have 1000 other things to do to get my car ready for this season, I would have simply cut off the excess bolt.

Anyway, Frank isn't really good at advertising this stuff and he doesn't have a web store or anything so I thought I'd share my impressions of this bit of kit since I'm sure there is some demand for it and it's hard to find. Hope I'm not breaking some forum rule but I don't even know the guy who makes them so... no affiliation.
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post #2 of 15 (permalink) Old 02-26-2019, 04:19 PM
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I did it with a wilwood parking brake caliper more easy to fit since the holding support for the cāble I saw included into the caliper. It is probably cheaper to fit.

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post #3 of 15 (permalink) Old 02-26-2019, 04:59 PM
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thanks, will consider this... as I'm currently with no parking brake as well

2007 Chrome Orange Lotus Elise
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post #4 of 15 (permalink) Old 02-26-2019, 07:27 PM
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Quote:
Originally Posted by glagola1 View Post

Anyway, Frank isn't really good at advertising this stuff and he doesn't have a web store or anything so I thought I'd share my impressions of this bit of kit since I'm sure there is some demand for it and it's hard to find. Hope I'm not breaking some forum rule but I don't even know the guy who makes them so... no affiliation.
No rule problem as far as I'm concerned. It's really a niche part that doesn't compete with any vendor product I know of.

I remember seeing some "spot calipers" when I was frequenting one of the other forums a few years back. Same kind of setup. I haven't had a parking brake for 7+ years and there are rare times when I'm parking on a steep incline that I'd like one. But I would literally just want one. Any reason you need two?

San

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post #5 of 15 (permalink) Old 02-26-2019, 11:57 PM
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The combo of the front caliper + HB caliper with rotor weighs how much compared to the stock rear caliper & rotor?

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

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post #6 of 15 (permalink) Old 02-27-2019, 03:37 AM
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Can this be just a direct replacement for the rear handbrake without the addition of the front 2 pot calipers? Saving 11lbs would be a nice upgrade.
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post #7 of 15 (permalink) Old 02-27-2019, 03:38 AM
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Originally Posted by elise/europa View Post
I did it with a wilwood parking brake caliper more easy to fit since the holding support for the cāble I saw included into the caliper. It is probably cheaper to fit.
Can you please send link for parts? Also how much does the wilwood part weigh?
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post #8 of 15 (permalink) Old 02-27-2019, 03:47 AM
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Can this be just a direct replacement for the rear handbrake without the addition of the front 2 pot calipers? Saving 11lbs would be a nice upgrade.
what and go without rear brakes........
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post #9 of 15 (permalink) Old 02-27-2019, 03:56 AM
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what and go without rear brakes........
Oh. My bad. I thought this functions as both. Silly me. I’m surprised no one has come up with a lighter option that functions as both yet after all these years.

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post #10 of 15 (permalink) Old 02-27-2019, 04:28 AM
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Probably both these options are pretty light[this and wilwood] and with lighter rotors and more weight on the rear you don't feel the sprung/unsprung difference

Most of the fixed caliper e brakes in the past are pretty hokey one way or another, the Elan is amazingly bad, many cars are using an entire drum brake just for the ebrake!
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post #11 of 15 (permalink) Old 02-27-2019, 04:42 AM Thread Starter
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If the OE 2-pot weighs 5.5lbs, then this combo is the same weight as the stock crappy rear caliper. I have not weighed the front caliper but it doesn't feel too heavy.
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post #12 of 15 (permalink) Old 02-27-2019, 10:32 AM
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I plan on getting these at some point, very nice solution.

2006 Exige
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post #13 of 15 (permalink) Old 02-28-2019, 12:19 PM
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Originally Posted by rb26dett View Post
Can you please send link for parts? Also how much does the wilwood part weigh?
The caliper are Wilwood MC4. I have in my note that the weight is 3.3 pounds each, but not sure. Here few pics of the set-up. The adapter plate is easy to make and I can provide the STP file if someone wants it. I reused the OEM cable attachment welded to the Wilwood. It is a small spacer into the Wilwood to suit 24 mm disc, but it is working. The handbrake works a lot better than OEM.
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post #14 of 15 (permalink) Old 02-28-2019, 11:19 PM
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Originally Posted by glagola1 View Post
If the OE 2-pot weighs 5.5lbs, then this combo is the same weight as the stock crappy rear caliper. I have not weighed the front caliper but it doesn't feel too heavy.
Thanks! IIRC, the weight of the AP 4 piston (motorsport version) caliper is 6.4lbs.

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

'07 Lotus Exige S310


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post #15 of 15 (permalink) Old 02-28-2019, 11:19 PM
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Group buy for discount????

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

'07 Lotus Exige S310


WTC 2
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