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06-17-2017, 06:55 PM | #1 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| LEDFOOT 2.0 - Full Tube Chassis
After a whole lot of fun it's time to reinvent Ledfoot. The truck/rig worked really well, very stable (low centre of gravity), freaky fast and very lightweight. There were however a couple of drawbacks; 1. After breaking one of the upper front link mount tubes, I felt it might be a bit fragile. 2. Torque twist, a lot of it. Threeo reasons; -leaky axial shocks (all are dry now) -too much power - no stabilizers So I sat down and got working on a new concept, using the existing parts: (I'll be using E-maxx shocks, Axial stock shocks are no bueno!) Still a work in progress, but tubes and silver solder are on their way! Last edited by jlhustad; 06-17-2017 at 06:57 PM. |
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08-03-2017, 09:54 PM | #2 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
Time for a build update Two smaller batteries in paralell replaces the longer packs for better packaging options More tubes and steel floor added Test fit of components. The only issue might be the front driveshaft touching the ESC when the suspension travels, time will tell... Lower link mounts and links are done In the background you can see the 3D model I made. Making a 3D model saves so much time as there is waaay less trail & error. Plates for mounting the upper link mounts were added, aswell as the B-pilar tubes are done Current state of the chassis model (only the tubes are shown). The current challenge is the upper link mounts. I'm going for K-link suspension front and rear. The upper links therefore has to be mounted at an angle (on the chassis). The way I see it, I got two options; 1. Fabricate the mounts from sheet metal 2. Machine something in aluminium I'm very open for imput & tips, so any suggestions will be most welcome.. |
08-05-2017, 06:55 AM | #3 |
Pebble Pounder Join Date: Feb 2015 Location: Bay area
Posts: 129
| Re: LEDFOOT 2.0 - Full Tube Chassis
I don't know what a K link is, but I have used M3 threaded standoffs and welded them to the chassis before. They're tricky to get placed just right, but once they're welded on they're easy to bolt up to and sturdy.
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08-05-2017, 07:52 AM | #4 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
@Mitey K link is another expression for a triangulated four link (straight lower links, the upper links points towards the pumkin/differential). It's whats you find on ex Axial Wraith, SCX10 (1) or the Bomber. Have not thought about standoffs before, not a bad idea. Wish I had a welder, I'm siver soldering and really, really really miss the ability to tack things :-) You also gave me an idea, I'm thinking of using standoffs and Traxxas part #3727A (which I got laying around). |
08-09-2017, 10:47 AM | #5 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
Build update 2 Marking the bending lines for "the nose". Nothing but precision tools Result! After test fitting I saw that I had a bit room to spare near the servo, so the tube will be shortened about 1cm. 1cm /( 2.54cm/in ) = 0.3937in, just so you americans don't feel uncomfortable Also 3D printed a mock-up rear shock mount. I'd like to make that out of sheet metal, OR out of a steel box section. Does anyone have any good tips to where I could find 1x1cm steel square box section, would save me a lot of time... Last edited by jlhustad; 08-09-2017 at 10:51 AM. |
08-11-2017, 04:27 PM | #6 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis |
08-15-2017, 08:38 PM | #7 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
Build update 4 Designed a upper link mount for the front and made it out of steel-cheese (also known as aluminium). Just used a couple of hand tools, no CNC required This should meet the angle of the links nicely..... Look, it's a scale hand... #AllTheScalePoints The rear upper links are done...very happy whith how the geometry turened out as the upper and lower link movement is paralell. Engine protection tubes added. These would typically protect the air cleaner on a real rig, and it looks badass. These are CAD templates (Cardboard Aided Design ! ), get it Just wanted to have a startingpoint before I started modelling in Solidworks... Future plans;
Any suggestings for the color sceme? Last edited by jlhustad; 08-16-2017 at 01:27 AM. |
08-18-2017, 09:33 AM | #8 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis |
08-18-2017, 09:42 AM | #9 |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,922
| Re: LEDFOOT 2.0 - Full Tube Chassis
Sweet! Nice job.
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09-08-2017, 02:20 PM | #10 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
Build update 6 Got a new rear truss on the thing.. After waiting for 1,5 eternities I recieved som more pipes. So I added some to the rear (from the B-pillar to the rear hoop) and drilled a couple of holes for the front upper link mounts.. Not certain about the battery holding solution thingy, but it might do... (Open for suggestions) I also went to the final round of the Norwegian championship at Skien, so here is a couple of photos: (I was way to buizzy spectating to bother with more pictures ) |
09-30-2017, 03:35 PM | #11 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
Build update 7 Front suspension tower is done. The only things left are to arrange the electronics, make some panels, painting and a bit of test &n tune. Sorry for the big gaps between each update, but you know how it is... life happens... I am considering to make aluminium (not alumanum, you know who you are ) panels or lexan panels. Lexan I can paint on the inside of the sheet, but the aluminium will need skins (as the tires work as sandblasters)..What do you guys think? also, who do you know of that makes custom skins? |
10-20-2017, 02:23 PM | #12 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
TEST VIDEO ON THE INTERWEBS! https://www.youtube.com/watch?v=5WmPqPWsG7E And after that test run, major changes has been made to the battery location and number ( 2->1 batteries, no more paralelle connectors). Also, the front shocks has been changed for a set of softer and longer shocks. My thoughs after the test run was that it flipped backwards a bit too easily, so I hope that has been remedied now.. New post will come soon with the current status of the build, just though i'd share the test run.. |
02-02-2018, 03:15 AM | #13 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis
Status update: The chassis is painted.. Rolling chassis: The next thing on the list is to decide the battery position and panting the panels. I'm going for a classic Iclandic look... think it's going to turn out great. |
02-02-2018, 12:53 PM | #14 |
Newbie Join Date: Jul 2007 Location: Norway
Posts: 30
| Re: LEDFOOT 2.0 - Full Tube Chassis
Mint! Sent fra min D5803 via Tapatalk |
04-28-2018, 11:13 AM | #15 |
Newbie Join Date: Apr 2018 Location: Temple
Posts: 27
| Re: LEDFOOT 2.0 - Full Tube Chassis
How are you going to attach the skins to the chassis?
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05-04-2018, 04:26 AM | #16 |
Rock Stacker Join Date: Sep 2010 Location: Norway, HOME OF THE VIKINGS
Posts: 83
| Re: LEDFOOT 2.0 - Full Tube Chassis |
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