Ripsaw driveline

[Pukemaggots]

and stop feeding it starting fluid.
shits terrible.

You do know Detroits used ether injection for the factory?

 

[87manche]

You do know Detroits used ether injection for the factory?

yes, I've used it in a truck. Had a little bottle holder that unscrewed and you put the can into it.

It's a metered squirt while the engine is spinning, not a can of ether loaded up into the intake and then all sucked into the first cylinder.

 

[DeteCT0R]

Anyone know what the tracks they use on the ripsaw are off of?

I believe Howe and Howe had them made custom, not something else's stock part.

Im late from the party but the track not that custom. Im sure ripsaw top idlers is custome but the bottom part rear sprocket and front idler/bottom idlers and the rubber track is from Soucy.(Specialized to military rubber track and for everything) you can get the track and all other stuff which is need probably cost lot of money.

 

[Dethmachinefab]

So the reason for starting this thread is in my back yard.

I would like to get it running. The stock driveline is a Detroit driving two verible hydro pumps that feed two verible hydro motors. The controls for those pumps/motors is gone. Not sure if any of that stuff is any good and the control technology is not available to buy Even if it did. All that hydro junk looks extremely expensive To rebuild. This will only be a toy, so not interested in spending more than 10K or there abouts.

The hydro motors drive big sprockets/chains inside the frame. The chain drives all the tires through swing arm suspension. I believe I could yank out the motor and all the hydro stuff. I have a 12 valve Cummins (bro) and I think I could source a tranny for a couple grand. That leaves building the ripsaw setup to drive the sprockets. I have a lathe/mill and can do basic machine shop stuff. The Howe stuff looks fairly easy to make. That’s why I’m interested.

If you guys got an easier idea, I’m all ears. (Remember the 10K budget.)

So now that your other build is finished your jumping full speed into this build, right?

 

[Bebop]

So now that your other build is finished your jumping full speed into this build, right?

Don't forget to wire it like an aircraft

 

[CarterKraft]

Ok, some pics.

Here’s the engine from the rear of the vehicle. The radiator is on the right and the duel pumps are on the left.

This is on one of the pumps.

I believe this is on the unit that drives The two pumps. (Mounted on the engine)

Here’s a view under the side of the pumps. (The large shaft is for a wheel swing arm)

In this photo, you can see the stainless fuel tank on the bottom. Also, the green hydro resivour that only has a puddle in the bottom. If you look close, you can see a plate on the frame. Under this is where I saw a sprocket and large chain inside the frame. It was half full of oil.I’ve been dumping scrap oil in it to fill it more. The chain and sprocket that is above the oil is kind of rusty. I would really like to get it unlocked and tow it around to mix it up.

Dash

So it goes 60 mph. Lol. Note total 75 hours. Do you think the engine is any good? It does spin, but wouldn’t start with starting fluid.

Here’s what I got for steering controls.

I think you can somewhat easily convert those pumps to pilot controls.
Then you could use a joystick with resolvers to get counter rotating F-R control with one lever or do two levers for "tank" steering.

 

[CarterKraft]

Those Hydromatik pumps have electro/hydraulic servo controls.
You can swap those to mechanical (linkage) controllers or hydraulic.
Here is an example of a linkage controller. item #8

 

[87manche]

Those Hydromatik pumps have electro/hydraulic servo controls.
You can swap those to mechanical (linkage) controllers or hydraulic.
Here is an example of a linkage controller. item #8

my solution was to replace the existing shit with arduino controlled servo shit.

 

[stjames151]

Iv only bought a ton of x.mil crap in my life and I'd offer that the likelihood that the hour meter is accurate is pretty low. That being said, half the .mil engines I've bought had coolant poured down the oil filler and ran. Kurtuleas ....I'm looking at you.

 

[CarterKraft]

my solution was to replace the existing shit with arduino controlled servo shit.

That is a solution but I am learning that I don't need a lot of learning...
Most of my Arduino dreams never reach fruition, I imagine WaterHorse will the the same.

Although replacing all that hydro drive train with equivalent mechanical is gonna be a lot of learning as well.
I would attempt to get the machine running on hydraulics if the filters are clean etc.

 

[CarterKraft]

My suggestion is to find a local hyd shop that knows their shit, not a cylinder shop...
This type of outfit who services ALL brands.

Hydrostatic Pump Repair, Rebuild, Remanufactuing, OEM Parts

Do you need to replace or rebuild your hydrostatic pump? We specialize in hydrostatic pump repair, rebuild, and remanufacturing. Get in touch with us today.

www.woosterhydrostatics.com

 

[87manche]

That is a solution but I am learning that I don't need a lot of learning...
Most of my Arduino dreams never reach fruition, I imagine WaterHorse will the the same.

Although replacing all that hydro drive train with equivalent mechanical is gonna be a lot of learning as well.
I would attempt to get the machine running on hydraulics if the filters are clean etc.

IIRC all the shit that operates those hydraulic valves is gone from the operator station, and there was some sort of analog computer widget that made it go properly.

most of the work on the arduino shit is already done.

3DR

Drone manufactured in California, 3DR, Mayan Robotics

store.mrobotics.io

one of those and ardurover and some tinkering and off it go.

 

[CarterKraft]

IIRC all the shit that operates those hydraulic valves is gone from the operator station, and there was some sort of analog computer widget that made it go properly.

most of the work on the arduino shit is already done.

3DR

Drone manufactured in California, 3DR, Mayan Robotics

store.mrobotics.io

one of those and ardurover and some tinkering and off it go.

Seems perfect, I'm just not the one to have the knowledge to implement that.

 

[87manche]

Seems perfect, I'm just not the one to have the knowledge to implement that.

and I do not know enough about hydraulics to control them with servos or electricity.

Can you just bolt a solenoid of some sort to those things and control the hydraulics? Something that could be PWM controlled for flow?
My original thought since they seemed to be mechanically controlled was to use large scale servos and linkages.

 

[CarterKraft]

and I do not know enough about hydraulics to control them with servos or electricity.

Can you just bolt a solenoid of some sort to those things and control the hydraulics? Something that could be PWM controlled for flow?
My original thought since they seemed to be mechanically controlled was to use large scale servos and linkages.

Just looking at the limited pictures these are electric over hydraulic pump controllers. The solenoids F & R will vary a internal charge pressure on a internal servo valve inside the pump housing.
The pwm of the solenoid will vary the pressure acting on the servo piston this varying the swash plate and pump flow either forward or reverse.

At first glance it seems simple to supply this pwm signal to the solenoids (and it might be) but I can't suggest to WaterHorse to try that without personally knowing his electrical experience in this realm, vehicle control.

If thet we're mechanical linkage there are many choices, gear reduction servos, linear actuators, Morse cables etc. but I don't think they are just looking at the pix I think I see the common 11mm Din connection for solenoids, not a deal breaker like I said I am trying to match OPs skill set to the objective.

 

[CarterKraft]

Start about :45 in for pump controller options.

 

[ProjectTwin]

I watched A documentary on the vehicles used in the mad max movie, ( Maybe it was here or the other place) but they were not impressed with the Ripsaws, I guess they had high hopes, but they were broke down most of the time, and couldn't hold up to the rigors of filming and the extreme conditions of the desert.

They always seemed like a rich guy novelty toy

Source for this documentary)

 

[Stingray]

Source for this documentary)

Howe and Howe Ripsaw EV1 "The Peacemaker"

"The Peacemaker" is The Bullet Farmer 's tracked vehicle in Mad Max: Fury Road The vehicle is a modified Howe and Howe Ripsaw EV1 "Extreme Vehicle 1" with a Valiant Charger body. In 2009 Colin Gibson contacted Geoff and Mike Howe of Howe and Howe Technologies on behalf of Miller Kennedy Mitchell...

madmax.fandom.com

Technical spec.​

The vehicle is a modified Howe and Howe Ripsaw EV1 "Extreme Vehicle 1" with a Valiant Charger body.

Origin​

In 2009 Colin Gibson contacted Geoff and Mike Howe of Howe and Howe Technologies on behalf of Miller Kennedy Mitchell production company. George Miller ordered a vehicle from H&H that would be essentially a fast track vehicle capable of driving in rough terrain and unforgiving weather conditions. H&H decided to use their EV1 Ripsaw chassis for this project, however the original design was modified by the requirements of the movie production company.[1] The reason for changes was the reduced price of the vehicle: H&H quoted USD 250,000.00 but Colin Gibson insisted on USD 120,000.00. H&H agreed under the condition that the vehicle would be delivered without clutch packs and would be equipped with brake steering instead. Additionally the EV1 Ripsaws were usually equipped with diesel or small engines, but Colin required the vehicle to have a supercharged V8. Building the vehicle took 4 months and rigorous testing in the US before the vehicle was shipped to Australia where it arrived halfway through the build of other vehicles and it was later modified and then shipped to Namibia. The vehicle, however turned out to be problematic.

Mechanical changes​

Originally the Ripsaw came with a watercooled Merlin V8 engine. Upon arriving in Australia the vehicle was tested on a 1km track, but the engine overheated and the brakes caught on fire. The exhaust pipes were 6 inches long which made the engine extremely loud even with hearing protection on.[2][3]

“	It needed to keep up with the 100 km/h chases, so we ditched the diesel engine and replaced it with a water-cooled Merlin V8	”
– Colin Gibson, production designer

Two radiators were installed in parallel either side of the motor so the water only flowed through the radiator with the least resistance. Proper exhaust system was installed in Villawood. Additionally single cooling fans and computer cooling fans were installed on the the transmission cooler.

The movie's main mechanic - Mark McKinley - tackled the braking system. As it turned out the brakes gave 100lb of pressure all the time which made the vehicle take off 'like a boat', but the reason they initially caught on fire was a 10k ohm potentiometer on the steering wheel and the brakes pedal.

“	It's meant to be the fastest tracked vehicle in the world, but it wasn't quite up to that for our use. I ended up refining the brakes quite a lot. It was probably the most dangerous vehicle on set and took a lot of refining	”
– Mark McKinley, chief mechanic on the set of Mad Max: Fury Road.

Eventually he tamed the beast with adjustable pressure valves in the hydraulic lines so it would not drag its brakes any more.[4] Not only the brakes were rewired but the air filters were replaced and additional 3rd radiator was installed in the back.

During testing in Broken Hill the vehicle was not responsive enough and it also swallowed a lot of sand. Due to dirt getting past the air filters the engine was damaged and cylinders had to be re-honed. Also during testing the track guild wheel was lost which went into the track and bent the differential. After replacing the wheel, straightening the differential and removing the track assemblies the team discovered that they were half welded only the exposed sections. That issue had to be fixed at Alexandria.

After testing the vehicle was shipped to Namibia where the engine was again replaced. The Merlin V8 swallowed a lot of sand and it had to be replaced with a smaller 502 Chevrolet engine. An electric water pump was installed, Ford Falcon's single core radiators and Falcon double fans as well as EWS water pump fan controller. A secondary battery was added along with Anderson plug. The vehicle was fitted with new tracks which only lasted a month before they broke. The cost of tracks was estimated at USD 18,000.00. A special diesel bath was made to try and keep the salt out of the tracks.

Bodywork​

The Ripsaw's body is of a mid-70's Chrysler Valiant Charger stretched and modified to fit over the tank chassis. Leftover Cessna sections are bolted up front, the grille is filled with bullet 'teeth'. There is a hole in the roof which allows for The Bullet Farmer to to sit atop and operate the searchlight. There is also space for his two henchmen in the back. The driver of the vehicle sits in the engine bay of the Valiant Charger shell. The driver had to be buried deep inside the vehicle which made it very difficult to see anything except straight ahead. The tracks had to be covered to protect the driver from the sand and dirt.

Appearance on screen​

The Peacemaker is first visible arriving at the blocked passage with disgruntled Bullet Farmer on board. After removing the blockade, the vehicle continues the chase until all vehicles get stuck in the bog. The Peacemaker, being the only vehicle capable of crossing the bog leaves the halted armada and continues to track down The War Rig. Soon enough a bullet from Furiosa's sniper rifle shoots out the searchlight in The Peacemaker, which blinds The Bullet Farmer and enrages him even further. Shortly after The Peacemaker is destroyed and its crew killed at the hands of Max himself.

Appearance off screen​

The vehicle was highly regarded as the most dangerous vehicle on set. Its problems with braking, custom design and engine forced the crew to refine it greatly to perform on screen. The vehicle was destroyed in Namibia.

"Even though I hated the Rip Saw, it was sad watching them get crushed and coming out as cubes" - Mark McKinley [5]

 

[ExWrench]

So the filmmakers bought ~50% of an actual Ripsaw & cobbled together shit to nurse it past the missing half of a standard Ripsaw build. Not saying a real one would survive in the desert, but that's a shitty representation of a Ripsaw.

 

[Stingray]

So the filmmakers bought ~50% of an actual Ripsaw & cobbled together shit to nurse it past the missing half of a standard Ripsaw build. Not saying a real one would survive in the desert, but that's a shitty representation of a Ripsaw.

I agree, but this makes me question how much "Rigorous Testing" it really got.

Mechanical changes​

Originally the Ripsaw came with a watercooled Merlin V8 engine. Upon arriving in Australia the vehicle was tested on a 1km track, but the engine overheated and the brakes caught on fire. The exhaust pipes were 6 inches long which made the engine extremely loud even with hearing protection on.[2][3]

More like you don't want to pay 250K, this is what you get.

Sounds like neither party fully explained expectations VS. performance limitations.

 

[ExWrench]

More like you don't want to pay even half of 250K, you get the bare minimum that meets contractual obligations.

Agreed, fuck those cheap assholes.

Reminds me of someone's party at The Old Spaghetti Factory. Dude across the table orders the gluten-free version of their signature pasta dish <as a personal preference, not for any health reasons>. Then later, while everyone is raving about their pasta w/ browned butter & mzithra cheese, dude has the gall to say, "I don't know what the big deal is, this just tastes like parmesan". Mu'fugger, you haven't tried it, so you can't have an opinion about it.

 

[Bacho]

Had Cleetus video on in the background and thought I heard they sold theirs for $400k+.

If those things can really pull that much money it seems we should be ripping them off with a better product.

 

[Wilson]

Had Cleetus video on in the background and thought I heard they sold theirs for $400k+.

If those things can really pull that much money it seems we should be ripping them off with a better product.

Good luck

 

[Mikel]

These had a controlled differential with brakes actuated by the steering wheel. My guess here is that the brakes are not adjusted properly.

 

[M92PV4U]

I have videos of our rig draw works and can get mechanical drawings of it. The operation is similar to the Original Post. I'll try again later.

 

[M92PV4U]

 

[[486]]

next time you change that rotating coupling out, you should replace it with one where the middle part goes entirely through the stationary part

then it won't have the thrust load and ball bearings and shit, just a couple o-rings and teflon backing rings

 

[M92PV4U]

next time you change that rotating coupling out, you should replace it with one where the middle part goes entirely through the stationary part

then it won't have the thrust load and ball bearings and shit, just a couple o-rings and teflon backing rings

I don't understand what you mean.

 

[M92PV4U]

 

[[486]]

I don't understand what you mean.

like these
where they got two o-rings and the middle part passes clear through the swivelly bit

the fluid pressure pushes on both seals with the same force so you get a zero-net thrust on the fitting
meaning your brake fluid won't leak out as often