LocostUSA.com

Not really issues, but a few things to consider.

Is the KPI from your ubj adapter going to work for your rim offset and tire size?

The lbj and ubj cup should be inclined / rotated relative to the lca / uca to ensure adequate cup clearance
for the desired suspension travel.

The lca looks narrower than normal but it is close to a frame node. In general,
wider is a better vector relative to the frame rails for distribution and loading.

The uca length looks a little tight to clear a 2.5" coilover with full travel.
Just something else to consider.

_________________
Miata UBJ: ES-2074R('70s maz pickup)
Ford IFS viewtopic.php?f=5&t=13225&p=134742
Simple Spring select viewtopic.php?f=5&t=11815
LxWxHt
360LA 442E: 134.5x46x15
Lotus7:115x39x7.25
Tiger Avon:114x40x13.3-12.6
Champion/Book:114x42x11
Gibbs/Haynes:122x42x14
VoDou:113x44x14
McSorley 442:122x46x14
Collins 241:127x46x12

The kingpin angle surprisingly gives me next to no scrub on +35 8" wheels.

I think you're right about the lower ball joint cup. Did not think the angle would be that different. I guess isn't not that expensive to make a new arm, if it makes it more correct.

The upper cup cannot be modified.

I'm going to use a push rod system, so hopefully clearance won't be an issue.


Really appreciate the suggestions. I was wondering about the lbj too

So, I'm redoing the LCA to angle the bucket better.

These are my ideas on mounting the rocker arm. I wanted to make it double sheer, but not super bulky.





I'm going to use high-misalignment ends and angle the whole thing a bit better. This is just a mockup. Also going to run a brace to the opposite "tower" and then brace the "tower" fore and aft.

Rotate the rocker about a line between the sphericals to greatly reduce or eliminate the misalignment. Make cardboard flange patterns for attaching the rocker to the chassis. Given the weird angles, I'd make flat flange patterns that butt the chassis tube, then make patterns to reinforce that which overlap the butted flanges. If clearance to the tube is an issue, move the tube.

If you want help designing those reinforcements, post a picture of the rocker pivot properly aligned and cardboard flanges in place. Once it is in the right place, other options besides butted flanges may present themselves.

_________________
Miata UBJ: ES-2074R('70s maz pickup)
Ford IFS viewtopic.php?f=5&t=13225&p=134742
Simple Spring select viewtopic.php?f=5&t=11815
LxWxHt
360LA 442E: 134.5x46x15
Lotus7:115x39x7.25
Tiger Avon:114x40x13.3-12.6
Champion/Book:114x42x11
Gibbs/Haynes:122x42x14
VoDou:113x44x14
McSorley 442:122x46x14
Collins 241:127x46x12

I'm not sure if I understand what you said, but I have aligned the push rods better, and shown the bracing in cardboard. This is also now at ride height. I do appreciate any help and thanks again.

That definitely looks better aligned but still off. It could also just be the photo.
The center of the rocker pivot should align with a line drawn through the centers of the damper and pushrod at ride height.
If the pushrod spherical binds against the cheeks of the rocker at either end of suspension travel, rotate the rocker mounting about the damper spherical. The rocker pivot should still align with the shaft centers.

Let me know if I am misinterpreting the photos and it is good as-is, and I will draw brackets to support it.

_________________
Miata UBJ: ES-2074R('70s maz pickup)
Ford IFS viewtopic.php?f=5&t=13225&p=134742
Simple Spring select viewtopic.php?f=5&t=11815
LxWxHt
360LA 442E: 134.5x46x15
Lotus7:115x39x7.25
Tiger Avon:114x40x13.3-12.6
Champion/Book:114x42x11
Gibbs/Haynes:122x42x14
VoDou:113x44x14
McSorley 442:122x46x14
Collins 241:127x46x12

I think that is an illusion of the photo. I think it should be good to go.

It looks pretty odd but it is all flat strip, .125".
Outlined and solid. No shear panel shown but it isn't quite a parallelogram.
Starts with purple base panel and builds from that.
Could also have lightening holes through out or use .050" sheet fully boxed transitioning to .125" flanges.

Just one method. You could also use tube flanges fitted to square risers and a diagonal in the direction of the pull under load.

_________________
Miata UBJ: ES-2074R('70s maz pickup)
Ford IFS viewtopic.php?f=5&t=13225&p=134742
Simple Spring select viewtopic.php?f=5&t=11815
LxWxHt
360LA 442E: 134.5x46x15
Lotus7:115x39x7.25
Tiger Avon:114x40x13.3-12.6
Champion/Book:114x42x11
Gibbs/Haynes:122x42x14
VoDou:113x44x14
McSorley 442:122x46x14
Collins 241:127x46x12

That was slightly different than what I was thinking, but that makes much more sense. The bracing is much more in line with the forces.

I'll need to make some very good card board templates. Luckily I can use it as a mirror for the other side.

Thanks again!

So went with a different design. Also, reangled the to ball joint mount.



Going to put a bar to tie the two rocker supports together.

Also switched to a 18.25 sweet rack and bumpsteer corrector.

This is what I am thinking of as far as rack placement. Should give about 130% ackerman. Just used some extra tube for mock up and make sure no conflicts that didn't show up in the computer model. Might need to measure real-life bumpsteer.



From above: (front steer made it difficult for placement)

Could you please consider that others read these threads to follow the learning processes and that by deleting 80+% of the images within days, the thread's purpose is ruined for us. Right now, there are less than 4 posts back before you get to talk relating to photos that are gone.

Hmm, not sure what is going on. Most of the pictures still show up for me. I'm not deleting pictures, but they can have issues from photobucket or wherever.

Sorry

Hence why it's better to upload them directly to this site so they are always available (and faster to load)

_________________
mobilito ergo sum
I drive therefore I am

I can explain it to you,
but I can't understand it for you.

So, I was looking at intakes and bought one from an impreza rs (flows better and more consistently).

Then I saw a thread on twincharging! Supercharger feeding the turbo charger. Yes please!

At the junkyard, found an eaton M62 in great shape in a 2000 Merc c230k. Tore it apart and will put new bearing in it. The idea is to spin it up early for low rpm torque, then shut off its electrical clutch when the turbo kicks in. Big wide torque band for autoX.

So, been thinking that the oem ecu with utec piggyback, and that it might not cover all of this craziness. So I might go back to my old friend Megasquirt. I've run MS1 & 2 in the past on my jeep, but MS3 with all its bells and whistles looks tempting. I can control the SC clutch, water injection, sequential fuel, and even e85 sensor.