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#1
04-23-2009, 09:23 PM
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No Drag Drum Brakes
Anyone see this tech article in the latest issue (July 2009) of HPP on page # 76? Learn something new every day.
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Just a blind squirrel looking for a nut. |
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#2
04-23-2009, 10:01 PM
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Jim Hand has that fix on one of his articles he wrote but it's hard to imagine just how and where to bend without a picture.Good pics and instruction in the HPP article.
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#3
04-23-2009, 10:01 PM
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Quote:
How much it will help remains to be seen, but it has to eliminate some drag.
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65 gto 10.75@125 |
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#4
04-24-2009, 01:19 AM
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DARN! I'm already in my jammies. I'll have to go by the magazine rack tomorrow and check that out.
PHILLYGOAT
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PHILLYGOAT 1965 GTO/ OEM Block, Crank & D-ports(all slightly modified of course)/ 3550lbs/ Full Exhaust/ Foot Braking 1.41 60ft 6.45@104.97mph 10.25@127.12mph(Pontiac Heaven)  More Details on GOAT http://www.pontiaczone.com/forum/vbpicgallery.php?do=view&g=379 GTO Burnout http://www.youtube.com/watch?v=nZqdcH0Ltc4 |
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#5
04-24-2009, 01:45 AM
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Why go to that much trouble- why not simply throw the self-adjuster stuff away? All the old vehicles I've had sans self-adjusters (and those that I threw away) didn't need adjusting more than once a year or so under normal street use.
When I saw that article's title, I had high hopes of learning some simple "tricks" for getting the shoes to not touch the drums at all- I was disappointed.
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
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#6
04-24-2009, 12:24 PM
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Can anyone scan and post the article for those of us who have a hard time finding HPP at our local magazine store.
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www.hobracing.com |
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#7
04-24-2009, 01:20 PM
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Dam, another 20 plus year secret revealed.
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If you cant drive from gas pump to gas pump across the map, its not a street car. http://s207.photobucket.com/albums/b...hop/?start=100 |
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#8
04-24-2009, 01:49 PM
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Mike,
You're a youngster, eh? More like 45-50 years... (:- Jack knows... Jim |
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#9
04-24-2009, 01:57 PM
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Quote:
 I would but my copy is at the resto shop.Region Warrior,why are you keeping 20 yr secrets?
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#10
04-24-2009, 02:19 PM
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Quote:
__________________
Just a blind squirrel looking for a nut. |
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#11
04-24-2009, 05:30 PM
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Quote:
__________________
If you cant drive from gas pump to gas pump across the map, its not a street car. http://s207.photobucket.com/albums/b...hop/?start=100 |
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#12
04-24-2009, 06:47 PM
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I even tried subscribing for a year, but every second or third issue went missing. I'd call HPP to report the missing issue and they always assured me another was on the way. Never saw the missing issues. Other magazines seem to arrive okay, so maybe the mailman was a Pontiac fan and was stealing the issues.
__________________
www.hobracing.com |
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#13
04-24-2009, 10:28 PM
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Much easier to remove the self adjusting mechanism and just set them yourself. Without the self adjusters removed it is easier to back off the brakes too.
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#14
04-25-2009, 02:58 AM
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Brian- I plead "guilty"- to working on too many FoMoCo and other brands, where the self-adjuster arm and cable can simply be discarded.
So... does anybody know any quick-and-dirty method of getting shoes to not touch the drum at all?
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
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#15
04-25-2009, 10:38 AM
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Guilty here too. All I see is cable and arm set-ups as all I have are Ford 9"s, 8.8s and Dodge set-ups. No faith is a GM rear
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#16
04-25-2009, 10:22 PM
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Quote:
__________________
Just a blind squirrel looking for a nut. |
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#17
04-26-2009, 03:41 AM
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Brian- I had read the article. Since the author is someone I respect, I hoped to avoid pointing out an error in it. However- the latter half of the fourth paragraph is incorrect. The actuating link does not prevent the "left" shoe from moving outward- but, rather, keeps the upper end of the self-adjuster arm from moving outward. The error continues into the fifth paragraph- the orange hold-down is merely the pivot point of the self-adjuster arm on the shoe, not a pivot point of the shoe on the backing plate.
If all of the self-adjuster items were removed, it would be clearly seen that these brakes are normal self-servo design as used on practically all post-war vehicles (excepting, of course, old Mopar double-anchor brakes). In self-servo drum brakes all shoe forces are transmitted to the anchor pin. When not applied, the shoes are constrained from rattling around in the drum by friction against the backing plate, owing to the hold-down springs. A feature not inherent in the usual drum brake design, is a positive means of positioning the non-applied shoes away from the drums, instead of the somewhat haphazard positioning that occurs when pressure is released. This is the feature I was asking if anyone has developed.
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
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