"Monster Board" High power 4X4 board with ATV tires

Lightweight / Folding / Portable EVs - seats optional
User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 14 2018 6:00pm

The upper control arm is adjusted by rotation to vary the pivot angle.

I am pointing to the arm here. The heim Joints are right hand thread at one end and left hand thread on the other. This allows length adjustment by simply spinning the arm without disconnecting either end of the arm. This makes adjustment super easy.

My wife and son will be out of town this weekend. So, I we'll be working on the board feverishly. I hope to have the trucks mounted (with steering dampers and related equipment) and the drive units installed. The board should look somewhat complete by this weekend.

This thing is freaking GARGANTUAN! I knew what the overall measurements would be. But, seeing it layed out with all components, it looks so huge!

Matt
Attachments
IMG_20180214_11672.jpg
IMG_20180214_11672.jpg (84.21 KiB) Viewed 1325 times
Last edited by recumpence on Feb 15 2018 10:32pm, edited 2 times in total.
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 14 2018 6:01pm

The angle in adjustable from roughly 30 degrees to 55 degrees.
Attachments
IMG_20180214_26258.jpg
IMG_20180214_26258.jpg (81.43 KiB) Viewed 1325 times
IMG_20180214_37824.jpg
IMG_20180214_37824.jpg (78.67 KiB) Viewed 1325 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
rojitor   10 kW

10 kW
Posts: 955
Joined: Mar 23 2011 6:39pm
Location: vigo spain

Re: "Monster Board" High power 4X4 board with ATV tires

Post by rojitor » Feb 14 2018 6:22pm

This project is starting to get shape. Looks amazing. Can't wait to see the final design

User avatar
Rikobonito   100 W

100 W
Posts: 144
Joined: Feb 22 2014 8:40pm
Location: FRANCE
Contact:

Re: "Monster Board" High power 4X4 board with ATV tires

Post by Rikobonito » Feb 15 2018 9:07pm

Image
This is going really biiig !! Awesome build, good continuation :wink:
my little blog with e-sk8, e-Cruiser, e-pintail, e-MTBoard, e-Dirt Scooter and others builds
... I wish also an e-MTBike soon !! :v: Thanks DIY Power community :wink:

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 6:53pm

I have begun building the trucks.

Here is the axle assembled with sprocket and hubs.
Attachments
IMG_20180217_35489.jpg
IMG_20180217_35489.jpg (87.67 KiB) Viewed 1259 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 6:57pm

Here is the main tube for the truck. The bearing fits into the end snugly. Flanged bearings are not easily available. So, in order to use a non flanged bearing, I must install a back stop. Here you can see the piece of aluminum tube I cut to install in the main tube as a bearing back shop.
Attachments
IMG_20180217_6357.jpg
IMG_20180217_6357.jpg (95.24 KiB) Viewed 1258 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 6:59pm

The back stop gets pressed in behind the bearing.
Attachments
IMG_20180217_43736.jpg
IMG_20180217_43736.jpg (101.39 KiB) Viewed 1258 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:01pm

The way I fixed the back stop inside the tube is by drilling holes around the tube and welding the back stop to the main tube through the holes.
Attachments
IMG_20180217_0296.jpg
IMG_20180217_0296.jpg (90.71 KiB) Viewed 1258 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:02pm

Here is the bearing and back stop pressed into the main tube.
Attachments
IMG_20180217_43329.jpg
IMG_20180217_43329.jpg (93.29 KiB) Viewed 1258 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:02pm

Back stops welded in place with the TIG.
Attachments
IMG_20180217_58242.jpg
IMG_20180217_58242.jpg (86.91 KiB) Viewed 1258 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:06pm

Here is the center of the main tube. You can see I welded a curved doubler to strengthen the king pin junction. After welding the doubler, I milled a wide slot into center of the doubler to accept the king pin sleeve. This was done on both trucks.
Attachments
IMG_20180217_59369.jpg
IMG_20180217_59369.jpg (86.42 KiB) Viewed 1258 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:08pm

This is the kingpin sleeve. I machined both sleeves to allow them to recess deeply into the truck main tube.
Attachments
IMG_20180217_17393.jpg
IMG_20180217_17393.jpg (139.48 KiB) Viewed 1258 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:09pm

Here is the way the two parts will attach.
Attachments
IMG_20180217_2975.jpg
IMG_20180217_2975.jpg (94.27 KiB) Viewed 1257 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:10pm

Getting ready to weld.
Attachments
IMG_20180217_48566.jpg
IMG_20180217_48566.jpg (97.88 KiB) Viewed 1257 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:15pm

Welding done.
Attachments
IMG_20180217_12331.jpg
IMG_20180217_12331.jpg (97.36 KiB) Viewed 1257 times
IMG_20180217_43758.jpg
IMG_20180217_43758.jpg (83.98 KiB) Viewed 1257 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:16pm

Here it is assembled for the first time!
Attachments
IMG_20180217_24197.jpg
IMG_20180217_24197.jpg (71.87 KiB) Viewed 1257 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:17pm

The suspension and truck assembly.
Attachments
IMG_20180217_9332.jpg
IMG_20180217_9332.jpg (72.9 KiB) Viewed 1257 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:18pm

Top down view.
Attachments
IMG_20180217_37405.jpg
IMG_20180217_37405.jpg (62.21 KiB) Viewed 1257 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 17 2018 7:19pm

Turning radius and angle articulation.

The board will obviously have a wide deck on top of the frame. The deck will probably be 16, to 18 inches wide.
Attachments
IMG_20180217_54454.jpg
IMG_20180217_54454.jpg (84.62 KiB) Viewed 1257 times
IMG_20180217_2944.jpg
IMG_20180217_2944.jpg (84.65 KiB) Viewed 1257 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

SlowCo   10 kW

10 kW
Posts: 913
Joined: Jan 05 2015 5:43pm
Location: The Netherlands

Re: "Monster Board" High power 4X4 board with ATV tires

Post by SlowCo » Feb 18 2018 11:02am

:lol:
That looks amazing! Great project again. Can't wait to see it finished and a riding video... :mrgreen:

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 18 2018 3:33pm

4 more hours of work netted some decent results.

Here is the competed deck (chassis). It is 17 inches wide. The sides have 10 degrees of kick-up. That is a touch over 3/4 inch concave in the middle of the deck.

The decking on top of the chassis will be 1/8 inch thick black G10 riveted down with 3/16 aluminum rivets. It should look very "Mad Max".

The 45 degree angle that the kick-up sides have at the corners was needed for tire clearance at max turning. Bear in mind, this thing is friggin HUGE. The 17 inch wide section of the deck is actually 26 inches long. So, PLENTY of room to stand even with tire clearance.

Some other bits were addressed today as well. But, nothing else worth showing.

Matt
Attachments
IMG_20180218_48849.jpg
IMG_20180218_48849.jpg (75.44 KiB) Viewed 1225 times
IMG_20180218_5816.jpg
IMG_20180218_5816.jpg (90.11 KiB) Viewed 1225 times
IMG_20180218_8433.jpg
IMG_20180218_8433.jpg (74.28 KiB) Viewed 1225 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 18 2018 6:55pm

More pictures.

It is starting to look good......
Attachments
IMG_20180218_26205.jpg
IMG_20180218_26205.jpg (70.17 KiB) Viewed 1210 times
IMG_20180218_46111.jpg
IMG_20180218_46111.jpg (89.03 KiB) Viewed 1210 times
IMG_20180218_57174.jpg
IMG_20180218_57174.jpg (78.69 KiB) Viewed 1210 times
IMG_20180218_1062.jpg
IMG_20180218_1062.jpg (62.07 KiB) Viewed 1210 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Feb 18 2018 6:55pm

Steering damper and drive unit placement.
Attachments
IMG_20180218_17264.jpg
IMG_20180218_17264.jpg (91.67 KiB) Viewed 1210 times
IMG_20180218_22245.jpg
IMG_20180218_22245.jpg (96.1 KiB) Viewed 1210 times
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?


User avatar
recumpence   100 GW

100 GW
Posts: 5286
Joined: Apr 19 2008 8:33am
Location: On Earth right now. That can change at any time, though..........

Re: "Monster Board" High power 4X4 board with ATV tires

Post by recumpence » Apr 20 2018 7:50am

I did some testing (just coasting) and found live axles will not work. Differentials are needed. So, I bought some generic differentials. Modifying the trucks to accept the differentials is the next step.

Matt
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?

Post Reply