Rear disc (AGAIN!!!)

[raggedjim]

I know this has been beat into the dirt, but I mocked up my rear disc setup to check out the brackets I designed on Autocad. Everything went together well and hopefully I'll install over the next month.

Here's some pics, Rg

By the way, the PURPLE frame is my spare I bought from a discouraged young man with lots of ambition but not much else... It had new calipers, rotors, brakes, etc but he screwed up the cab trying to shave the driprails... and sold the frame cheep

[raggedjim]

Next... more pics

[raggedjim]

another...

[raggedjim]

Last one...

[gutterman01]

hey I bet your wife will be glad when you get rid of that purple frame lol by the way where did you getr the design for those brackets and what calibers did you use?
T.D.

[gutterman01]

What color do you want those backets painted?If it's black let me powdercoat them for you (free) for the help you have given me I have a buddy that powder coats in Murray

[raggedjim]

How did you know about my wife not liking the frame??? I bought a he!! of a lot of plants (Landscaping) and dug alot of holes to make up for it! And I have two weeks to get rid of the frame once I have stripped what I need.

I did the bracket design myself on Autocad and had a machinist friend build them. Did alot of measuring and checking before I settled on the final design. But it went together the first time. I have worked in design and engineering for the last 10 years and if everything I had to do was as easy as this I'd have it made. I still have the Autocad drawing if you are interested.

The calipers are front calipers off of an 86 camaro (this bracket should work with the eldorado rears also) The rotors are cadillac seville (I have NAPA's part number somewhere) I had to turn the rear axles down to fit inside the rotors but it wasn't much at all.

So far I have less than $100.00 in it but I don't have all the details worked out yet...

[raggedjim]

I appreciate the offer on the powder coating, I planned to go with Eastwood Aluma-blast. Are you in Murray???

[gutterman01]

She told me when I came and got those springs and trailing arms she was ready for it to be gone

[raggedjim]

Tim, I shoulda known...

you can have it soon...

Rg

[gutterman01]

Just give me a shout when you want it out of the way I'm not needing it any time soon but I might get you out of the dog house
and get it out of your yard of course then I'll be planting shurbs and honet dews lol

[N2TRUX]

It looks good. What are you going to do for an E-brake?

[fastbagged68]

Originally Posted by N2TRUX

It looks good. What are you going to do for an E-brake?

My E Brake is my frame.....It is kind of hard to move a truck when it lays frame!

[raggedjim]

E-brake? I don't have one now, I'd lose some of the thrill of driving old trucks if I had an e-brake! Some guys skydive, some climb mountains, I drive with no e-brake...

Seriously, I may go to the Eldo rear calipers that have built in e-brakes if I can find a used set reasonably priced. Then I'd have to fix all the old corroded messed up cables I have...

Thanks, Rg

[Bill W]

Originally Posted by raggedjim

E-brake? I don't have one now, I'd lose some of the thrill of driving old trucks if I had an e-brake! Some guys skydive, some climb mountains, I drive with no e-brake...

Seriously, I may go to the Eldo rear calipers that have built in e-brakes if I can find a used set reasonably priced. Then I'd have to fix all the old corroded messed up cables I have...

Thanks, Rg

Have you thought about an e-brake on the drive-line. I know Toyota Landcruisers come that way stock. They use a drum brake on the end of the transfer case output shaft, then the drive line bolts to the brake drum. You could do the same thing with a rotor/caliper set-up from a motorcycle.

Bill

[StingRay]

Would those brackets work with the Seville rear calipers? If so would you consider sharing the drawing here on the board? I have a full set of Seville rear rotors and calipers here I have been thinking about using.

[raggedjim]

I wouldn't have a problem with sharing it, but I can't be certain that the seville rear calipers would work unless I had some. I'll see if I can find some and measure them.

The drawing is in Autocad and if you have autocad I will email the drawing to you.

Of course, these were for my personal use and are NOT being sold, so you have to take all responsibility for function, fit and safety.

After I made mine there were a few things I would have changed, so I'll update the drawing before I send it to anyone.

Rg

[Shane]

I would also like to see the Acad drawing .... THANKS!

nduroracer@bellsouth.net

[StingRay]

Thanks a bunch

I am an engineering technologist and can work with the brackets if they need tweakin for Seville calipers. We have a cnc router at work so I can easily cut prototypes from a dxf file out of wood or aluminum till I get it right. I figure why re-invent the wheel when somebody else has already gone to the trouble. I'll PM you an e-mail address. If I can use em and need to make changes for my calipers I'll offer those new bracket drawing files up to who ever else wants em. I'm not too worried about risk of failure as they look pretty stout in the pics. I figure you'll twist the axle tube before you ever break that bracket

[Slammed67]

Those look nice, but I have one concern. The bleeder screw should be facing up (so it's the highest point of the caliper) for proper bleeding. Doesn't look like much air could stay trapped in the caliper the way you have it mounted, but it's possible. It might work better if the you rotated the caliper 45degrees (towards the rear of the truck) so the caliper is sitting more vertical. Just something to think about. Anyone agree? Disagree?

[raggedjim]

Shane, I got most my ideas from you! But I'll send the dwg anyway. It'll be tomorrow sometime.

Stingray, yeah, it's overengineered to be sure!

Slammed, I've seen that mentioned before. Sounds goofy but I am going to put enough slack in the flex line so I can put the pads in the caliper and slide the caliper on the rotor without anything mounted. Then I'll bleed the brakes with the bleeder up, pullthe rotor out and install everything. Even if I have to spread the caliper it should stay air free. If it works well I'll let you know, if not, well, I MIGHT let you know!

Thanks, Rg

Oh yeah, I broke down and got a corvette (68-72) mastercylinder (rebuilt autozone) and a proportioning valve (CPP) so I won't get screwy brakin'.

Oh, yeah (part 2) I don't mind sharing but PLEASE use it for your own hobby and not for financial gain.

[N2TRUX]

Originally posted by raggedjim
E-brake? I don't have one now, I'd lose some of the thrill of driving old trucks if I had an e-brake! Some guys skydive, some climb mountains, I drive with no e-brake...

Seriously, I may go to the Eldo rear calipers that have built in e-brakes if I can find a used set reasonably priced. Then I'd have to fix all the old corroded messed up cables I have...

Thanks, Rg

That sounds like opening up a can of worms. Hey if no E-brake doesn't bother you, it doesn't bother me. I have them on every thing I own, but doubt that they would save my @ss in an E-mergency:p

Have you seen this thread- Swervins conversion

[raggedjim]

N2TRUX, hey I had a 240z car that the master cylinder went out on and I drove it with no brakes BUT the e-brake for 2 months until I got the master cylinder fixed! It was rough on the rear brakes and I wouldn't try it now (older and not as bulletproof...)

I am thinking up a pretty unique e-brake setup, if it works I'll post it...

Thanks for the link, swerve has been blazing a trail for me to follow...

Rg

[loweredd]

How much do you think you will have into everything, raggedjim? I think I'm going to try a kit from speedway motors down the road from me.

What diameter rotor do you have there?

[raggedjim]

loweredd, here's a brief rundown. I don't have all the misc. parts gathered yet (flexible hoses, line connectors, etc.) but i have the rotors, calipers, pads, brackets, master cylinder and the proportioning valve is on order.

Rotors, 1978 Cadilliac Seville, NAPA #UBP 85776, $24.99 ea, 11 5/32" Dia, 1" thick, 5x5 bolt pattern. Will require machining the axle flange to allow rotor to slide over axle. (piece of cake...)

Calipers, 1986 Camaro front calipers (no e-brake), NAPA #SDC 2422032 & 2422033, $13.99 ea

Pads, 1986 Camaro front pads, NAPA #BRP BR7070AM, $16.49 does both sides

Master cylinder, 1968-1972 Corvette, approx. $30.00

Proportionong valve, Classic Performance Products, $59.00

Brackets, designed by me and graciously CNC'ed by a machinist
friend $0.00

Total so far is less than $185.00 including the Master cyl and pro valve.

All the rest of the parts will raise the total. Hopefully I can stay less than $250.00 in the end.

I think it would probably be alot less trouble to buy a kit IF you couldn't find a friend to do the machine work, or someone to supply an AutoCad drawing, or you don't enjoy making things work (some people don't...) For me it's more of a personal challenge and will give me some braggin rights IF it all works!

The kits usually don't include a master cylinder or proportioning valve, so the kits can be expensive. I don't think I would do this to a vehicle I drive everyday either. Safety is always a concern and I am designing an alternate e-brake system (still in it's infancy...)

I am also buying cheaper parts, but they all have a lifetime warranty.

Hope this helps, Rg