JIA's IFS Ultra4 build

[JasonInAugusta]

Finally got the transmission set up. Put an Axial servo to use with an Axial aluminum servo arm.

[team3six]

Jason, did I miss something? A Dig on an Ultra??

[Chili]

I believe thats rc4wd's AX2 2 speed transmission. It's great.

[team3six]

Ohhh gotcha

[frdtrkguy]

Thanks JIA for the links to the arms!! Much appreciated



So, your happy with the fit/finish on the aluminum arms?

[JasonInAugusta]

Originally Posted by team3six

Jason, did I miss something? A Dig on an Ultra??

Originally Posted by Chili

I believe thats rc4wd's AX2 2 speed transmission. It's great.

Yeah, the AX2 from RC4WD. Fits these rigs perfect, especially considering the dual-purpose aspect of a rig like this.

Originally Posted by frdtrkguy

Thanks JIA for the links to the arms!! Much appreciated



So, your happy with the fit/finish on the aluminum arms?

Yeah, no problems with fit. No sharp edges.

Front suspension is wrapped up.

[desertmaxx]

are those the mc-master carr heim joints. i got some rc4wd steelies and they are a little sloppy in my opinion. are those any better?

Originally Posted by JasonInAugusta

Yeah, the AX2 from RC4WD. Fits these rigs perfect, especially considering the dual-purpose aspect of a rig like this.



Yeah, no problems with fit. No sharp edges.

Front suspension is wrapped up.

[CarterFab]

I bought the McMaster versions after buying the RC4WD version, and the McMaster were worse. You can use an o-ring on one side of the ball to tighten them up. Also make them look like Johnny Joints.

[JasonInAugusta]

Originally Posted by desertmaxx

are those the mc-master carr heim joints. i got some rc4wd steelies and they are a little sloppy in my opinion. are those any better?

These are the RC4WD units. I dug through the bag of them at the hobby shop and got the best of the bunch. They're not perfect, but it's not going to have a huge effect on this rig. I wanted them for the scale look. I'll take a little hit in performance to make it look good. It may sound silly, but I want the IFS to stand out on this rig. That's why I went with silver arms instead of RPM's black units.

Also, caster and toe changes as the Exo suspension cycles, so a slight bit of movement in the ball isn't a concern. It's still going to go where I point it.

While we're talking IFS, here are three of the rigs I've built in action this past weekend. Also in the video are my blue SA Ultra4 and Badger's Wraith.

from Jason Carter on Vimeo.

Originally Posted by CarterFab

I bought the McMaster versions after buying the RC4WD version, and the McMaster were worse. You can use an o-ring on one side of the ball to tighten them up. Also make them look like Johnny Joints.

What part number?

[JasonInAugusta]

Rear suspension is done.


And the completed front. Weird how the camera distorted this a bit.

[Etmonta]

That thing looks awesome! I would love to build something like that.

[desertmaxx]

those rigs work great. i would even say better than the normal wraith in the vid.

[NCT_Guy]

Some really nice stuff. I am in envy.

[JasonInAugusta]

Originally Posted by desertmaxx

those rigs work great. i would even say better than the normal wraith in the vid.

They have a lower CG, are more stable in off-camber situations, descend better than a Wraith, and they're insanely stable at speed.

I'm happy with how they do.

[DISTURBIN' tha PEACE]

Originally Posted by JasonInAugusta

They have a lower CG, are more stable in off-camber situations, descend better than a Wraith, and they're insanely stable at speed.

I'm happy with how they do.

That makes 4 of us.

They even work with 3 shocks. Had a shock shaft pull out of the rodend on the driver side rear while we were playing on a step-up jump before hitting the trail. Started & finished just fine.

[JasonInAugusta]

Originally Posted by DISTURBIN' tha PEACE

That makes 4 of us.

They even work with 3 shocks. Had a shock shaft pull out of the rodend on the driver side rear while we were playing on a step-up jump before hitting the trail. Started & finished just fine.

The rear sway kept it in check.

[MiniMorris]

So with this 2 speed you say you dont use/need a drag brake.. so do you think a VXL would work because low gear is geared so low. I know it is not sensored but...it geared low. Do you know if anyone has tried this trans sensorless?

[DISTURBIN' tha PEACE]

Originally Posted by MiniMorris

So with this 2 speed you say you dont use/need a drag brake.. so do you think a VXL would work because low gear is geared so low. I know it is not sensored but...it geared low. Do you know if anyone has tried this trans sensorless?

VXL sucks ass. I would not recommend it to anyone.

I found for pure crawling, you'll want some drag brake. For everything else, it's not so necessary.

[MiniMorris]

Originally Posted by DISTURBIN' tha PEACE

VXL sucks ass. I would not recommend it to anyone.

I found for pure crawling, you'll want some drag brake. For everything else, it's not so necessary.

Ok well a castle 4 pole then? Im wondering if you need sensored..?

[JasonInAugusta]

Originally Posted by MiniMorris

So with this 2 speed you say you dont use/need a drag brake.. so do you think a VXL would work because low gear is geared so low. I know it is not sensored but...it geared low. Do you know if anyone has tried this trans sensorless?

I wouldn't use a VXL in this.

Originally Posted by DISTURBIN' tha PEACE

VXL sucks ass. I would not recommend it to anyone.

I found for pure crawling, you'll want some drag brake. For everything else, it's not so necessary.

This. If you're going to do nothing but crawl you'll want a little. If you plan on going fast across open terrain then getting through the rocks (race style) you'll want the drag brake off.

Originally Posted by MiniMorris

Ok well a castle 4 pole then? Im wondering if you need sensored..?

Sensored is nice for the super smooth response just off neutral. Much better when crawling no matter what gearing you're running.