410/411 disc brake mod

[mklotz70]

I have not, yet.  When someone pays for a set, I'll use that money to have several sets of brackets cut.  I have the bearing spacers on hand already.

[Lobo]

what is the cost for a set now adays

[mklotz70]

Same...$285(shipped in US).  The lead time is just longer since I'll order the laser cut parts after an order is placed.  The bearing spacer is the same as the roadster kit and I have those on hand right now.  I was going to raise the price for one offs, but since I don't have to machine the spacer, it's not that big of a deal to weld up the brackets since I have the jig built.

[freaky510]

I still have some plates and tabs just need the spacers for the tabs.

[mklotz70]

Gotta pic of them?  There weren't any spacers between the tabs and plates.  You may simply need to weld them together.

[freaky510]

Posted a pic of the bracket I have on Ratsun fb much easier when mobile

[mklotz70]

Easier for you maybe.......I can't find it.

[mklotz70]

Got a second fb notice......pic was at the end of that link.

 

 

Dang, that was some time ago.  I'm pretty sure that was a water jet set.  There was another set of ears with them and a set of 4 small discs for bracket spacers that I machined manually.  They will work, but it puts the clearance to the tierod nut really close.  I would think that they'd probably work without the bracket spacers(small discs), but you'd need the bearing spacers.  I'm not positive about the ears clearing on those without the discs. 

 

I may be ordering some more brackets from the laser cutter in the next week or so.  I've got several people interested and I've been waiting for at least one of them to place an order so I can use that money for the brackets.  I may keep waiting.  If no one wants them bad enough to order a set, I'm afraid they still won't order after I lay the money out....been there done that......tired of it.

 

If I decide not to do any more, I'll post the CAD art on my site.

[freaky510]

Yes these are the water jet ones. Yes I have 2 different tabs. And I also recall the clearance issues. Well darn I was hoping to help out.

[mklotz70]

yep...sorry.  I think at some point there was hope that those could be salvaged/modified to work.  They might if they're used with the bearing spacer.

 

I just need someone to buy a set so I can submit the order to have more cut.  I already have the bearing spacers.

[mklotz70]

I kinda feel like I've hogged the 3D Modeling thread, so I think I'll just put this here for the enjoyment of the 411 owners. 

 

I've been wanting to redo the bracket design for awhile.  The old one needed a couple of tweaks anyway.  I'm also changing up the truck design too.  In the truck design, I'm trying to switch to a plug welded tab to make the welding way easier.  I figured I might as well try to design this bracket to use the same tab. Anyway......I saved some images along the way as I was designing....thought I'd share.  These first ones are a quick model of the spindle.....at these the parts of the spindle that I needed to reference.  I also took some vid of how I measured the spindle....but I haven't uploaded it yet. 

 

 

 

 

 

 

So I started with a bigger flat piece than needed and did a bit of assembly with it, the tabs and the spindle.  I was able to check the clearance of the tab to the spindle from within CAD.  Trying to make the bracket a bit more compact than the original.  I won't explain each step, they're just a couple of sample shots as I was going along.  Oh....I put the holes in the main plate for easy referencing while designing, but they will either have to be eliminated in the final design, or I'll have to put a 1/4" tall plug in the center, then weld both sides.  If there's no hole in the main plate, I can just plug weld from the tab side.  From the research I've done, the 3/4" hole is the right size for 3/8" plate........but I welcome other opinions on this before I actually have them cut.

 

 

[mklotz70]

I kinda went a bit more "organic" on this one since the 411 is so curvy.  The laser cutter doesn't care if it's a curve or straight line, so why not :)

[]2eDeYe]

Those look great. :thumbup:

[mklotz70]

Thanks!  So much nicer to do the grunt work in CAD first!! :)

[mklotz70]

Here's the vid I took while taking the measurements on the mill.

 

[mklotz70]

Believe it or not.....there's an update!

 

[Swedishcadillac]

Thanks Bluehands! I ordered my rotors and calipers last night. I was going to take hub and rotor to local machine shop and see what they thought would be the easiest fix... Not planning on putting thousand of miles on her and burning through rotors fast... But if they can machine hub I see the ease of fitting stock rotors in the future.

[mklotz70]

You'll be hard pressed to wear the rotors out in the next 10 years with moderate driving.  I talked to Doug(wagon it was designed for) after a year or more and he said he couldn't see any wear......and he was driving the heck out of it.....trips to Canada and back!

 

Always better to modify the hard part if possible.  It's not that convenient to do the hubs since most guys can't find a shop to do it.

 

I'm going to borrow a hub and look at the rotor/hub fit again......but that won't be until the weekend.

 

I think the hub I have here is actually a 310 drum hub.

[mklotz70]

[Swedishcadillac]

Wow! Exciting progress... I haven't found hardly any aftermarket parts for the 410/411, and am glad you've created this for one of the biggest weak points (weak drums) That jig looks very accurate, can't wait to buy and install mines!

[mklotz70]

Thanks!  They're getting there.  I've got hardware on hand for a few kits.  Guess I'll have to look and see what I need for the rest of them.  Once all of the brackets in the shop are finished, I'll send them to the plater for the black zinc.  Any that get ordered/shipped prior to that will be sandblasted.  Hopefully, this weekend will allow for some good progress!

[marky510]

Hey Mike,

Just a quick question. Do you know if these can be used with the 312?

Thanks,

Mark

[mklotz70]

Sorry....no clue.  Do you have any pics of the 312 front end? 

[marky510]

I'll be getting it up in the air today or tomorrow, so i'll get some pics of everything. 

[Swedishcadillac]

I'm contemplating making a rear disc bracket for my 410. It will be like the Beebani truck bracket, but instead of using Isuzu 6-hole rotors and calipers, I want to use 1985 mazda RX-7 rotors and calipers. Does anyone know of any problems with this setup? Besides having to machine hub/rotor and being creative with parking brake linkage..