Bulldog's Screamin 2 Southern Buggy

[Bulldog]

Youtube made me do it.
ColeWorX Buggy Screamin II 434 Small Block - YouTube

After seeing this buggy and thinking about it for many months, I decided to give it a try. I wasn't going to post until I had the chassis built, but thought...why not let you guys suffer through it with me! Here's where I'm at now.

Wraith skid
VP wraith axle parts.
Futaba 9157 steering servo
Highland lockers
Axial universals
mip or rc4wd punisher shafts
rc4wd 2.2 beadlocks and boggers
tekin pro 35t
HH brxl
Custom axle mods by cfm Clay carter
Custom links from Lue (Mattzilla)
Custom beadlock rings from mthead
mip driveshafts
cc BEc
3s cheapo battery
honcho shocks for mockup...something sexy later on.
1/4" brakeline cage.

The torture chamber.

I finished the main portion of the chassis and had to get it mocked up.

I'm still playing with the ride height and how I mount the chassis to the skid

This is how I got the general dimensions of the chassis. I tried to bend the tubes to the picture and then freeformed the rest by eye. Not perfect, but close enough.

Trying to get all the tubes together in the front was a major headache. I also was trying to find a way to work the CMS in. I think I might have to come up with something else. I'm thinking of some sort of bellcrank setup.

I'm going to shorten the rear section...It's a little big. The hard part of the chassis is that the tubes are all 1 piece from the front to the back to the front.

I 've still got a lot of the smaller support tubes to do which are tedious.

You can see here how the CMS wouldn't work. I anticipated that, but I'm going to have to get creative.

Updates will be SLOW! Thanks for looking. Any ideas are or critiques are certainly welcome! 8)

 

[Modbug]

Just looking at the pictures of that rig can give you a headache.

Definitely if you want to perfect your tube bending skills this is the way to go.

The bends and twists are looking good."thumbsup"

 

[country_crawler]

You have skills! That looks spot on!

 

[kaneohecrawler]

Looks sick!! Good luck on figuring out cms. I'd leave it on the axle for this type build..

 

[ROLANDROCKSHOP]

looks great so far!"thumbsup"

id agree..leave it on the axle.

 

[darkmanx]

Bulldog you are the man! Awesome job!!!!

 

[mattzilla]

Very clean, very clean. Lov'n it bro......
Great work......

 

[ngward79]

Bulldog that is looking awesome! I started out with a cms but it just sucked the chassis down when I tried to steer, with out a pan hard mount it wouldn't work but that wouldn't look scale either so for know I left it on the axle. However checkout this on YouTube, its what I would like to do and he has a couple of vids on it. http://m.youtube.com/my_favorites#/watch?v=hSNogHEINs4

 

[Bulldog]

Thanks guys! The vid link I didn't understand NG. Ray makes some INSANELY cool Videos! But I didn't know what you were referring to? I'm going to spend some time hopefully tomorrow figuring out the steering options. I really want to come up with something other than the servo on the axle. With the ride height I'm going for and amount of space between the servo and the chassis, I might not even have the option to use it. We'll see where I end up:roll:

 

[ngward79]

Thanks guys! The vid link I didn't understand NG. Ray makes some INSANELY cool Videos! But I didn't know what you were referring to? I'm going to spend some time hopefully tomorrow figuring out the steering options. I really want to come up with something other than the servo on the axle. With the ride height I'm going for and amount of space between the servo and the chassis, I might not even have the option to use it. We'll see where I end up:roll:

I just posted a link to the one video, he has a few over the same thing. It basically looks like a scale PSC hydraulic steering. He uses a chassis mount sevo with piano wire running through a guide ( looks like hydraulic hose) to a scale shock ( hydraulic piston) it would look awesome on the southern buggies and scale to the 1:1 I just haven't figured out how to do it exactly. It would also eliminate the need for a pan hard bar with a cms, I think...

 

[Modbug]

Have you seen Prifral's Mongo?
Built hydraulic steering, but he's not giving the details.
I think he wants to test it first, looks like it works great in the videos.
Maybe he'll sell them later, that would be awesome.

 

[Bulldog]

Thanks for clearing that up NG...I'll have to eagle eye that. Prifral's setup is AMAZING, but he probably won't be selling any anytime soon. I know there might be a similar faux hydraulic setup that is in talks, but until it is announced or released, it isn't an option. I worked up a bellcrank setup today and will test it this weekend. If it works, I might be able to come up with a false ram setup to disguise it. I've got my fingers crossed. :twisted:

 

[Modbug]

Good luck, that would be cool.

Why can't the 1:1 use a real big servo, then we wouldn't have to worry about all this.:mrgreen:

 

[ngward79]

Thanks for clearing that up NG...I'll have to eagle eye that. Prifral's setup is AMAZING, but he probably won't be selling any anytime soon. I know there might be a similar faux hydraulic setup that is in talks, but until it is announced or released, it isn't an option. I worked up a bellcrank setup today and will test it this weekend. If it works, I might be able to come up with a false ram setup to disguise it. I've got my fingers crossed. :twisted:

If you figure out how to make that work I might have to copycat it to get that big ugly servo off my axle. Good luck.

 

[Bulldog]

I tried about 6 different setups today and still haven't found the answer. I keep on wanting to give up, but then I look at that beautiful axle and that damn servo on top. I Have to come up with something. I've got one way crazy idea that I need to play with this weekend. The bellcrank idea worked alright, but by its nature, wants to work against the suspension. I want the suspension to float as it should. I'll post up with some pics soon. :twisted:

 

[Bulldog]

Well, after a lot of brainstorming and mockups, I think I finally found an answer for the steering system. It is just mocked up for now to see if it works. If it goes well, I'm going to tear it all down and clean up each individual component. Right now, you can tell I raided the spare parts pile.

The plan is to use an extra xvd to act as a steering rod that operates through the vanquish axle truss. The xvd shaft will be sleeved with tubing and then have a servo horn brazed to the other end. It will then have a linkeage going to the servo.

I wanted to ultimately have some sort of faux hydraulic ram setup. I just threw this shock body on there to see how it would look. Any thoughts?

Despite the screw being too long, the setup works very smoothly and has full throw without any binding.

With this setup, I steer clear of the driveshafts and the links.

And at last...all the clearance I was looking for and a nice clean axle.

Any thoughts or ideas are appreciated. Updates in time.8)

 

[ngward79]

I think it's turning out well I like the idea , I'd just try to line up the shock more with the push rod. How you going to mount the cvd to the servo?

 

[Modbug]

Interesting design, I agree with ngward79, the rod and shock should be on the same plane.
Otherwise, it's gonna put a twisting pressure on the servo horn.

Only other concern is the length of CVD, causing unwanted twist on the servo.
Or maybe flex, I guess testing it will tell.

 

[Bulldog]

Everything will be refined once it's working. The cvd will mount to the chassis and have a horn on the end similar to the horn on the other axle end. Then I'll run the servo with a link to the horn probably on the other side of the chassis...where it mounts is still up in the air...along with everything else. That's why I wanted to see your electronics setup. I need to fit as much up front as possible to save room for the interior. It's nutty, but I think it'll work. :twisted:

 

[FRENCHBLUE72]

Getting in here to see how the steering works looks like a great idea..