06-04-2018, 05:49 AM | #121 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Crazy axles idea design |
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06-07-2018, 03:43 PM | #122 |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design
Family and work issues have kept me away from the workbench, so I was not able to progress too much. Anyway I was able to make the electric harness to connect the 2 batteries, 4 ESC, Receiver, and a Voltage Indicator. Testing is closer now |
06-08-2018, 03:37 PM | #123 |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design
Well here it is finally fully assembled. Tomorrow will drive it I did some test runs inside of the workshop and for what I can see now it is not going to work any well (as expected ) This is what it is, trial and error. But no problem, will redesign and test again |
06-08-2018, 03:50 PM | #124 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Crazy axles idea design
I really like .
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06-12-2018, 01:18 PM | #125 |
Quarry Creeper Join Date: Mar 2007 Location: winchester
Posts: 226
| Re: Crazy axles idea design
sick nasty creation!!!! cant wait to see some vids of this thing running |
06-13-2018, 09:18 AM | #126 |
Quarry Creeper Join Date: Jan 2014 Location: Western Wa. Mose Capital of the World
Posts: 275
| Re: Crazy axles idea design
Really cool project lots of innovative ideas . But any of the electronics sitting outside the wheels are going to take a beating. And will let the truck hang up on the rocks or other stuff mother nature but's in Ur way. Not trying to be overly critical just being realistic. Last edited by Tom G; 06-13-2018 at 09:23 AM. |
06-14-2018, 04:26 PM | #127 |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design
Video of Gosainthan :p running. I crashed just before filming against a wall already broke a part fixed it and made the video. That parts brake is part of the plan as it is printed very weak in order to redesign and improve strength. Maneuverability is great, even that I am not getting full turning radius with this servos. But it does not work any well due not using the correct gears and not appropriate gear ratio. It almost has no power due that. New gears are on the way |
06-14-2018, 05:23 PM | #128 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Crazy axles idea design
Very cool to see run. Steering isn't bad |
06-14-2018, 05:43 PM | #129 | |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design Quote:
This wheels are around 30mm wide the motor and battery are almost fully covered with the wheel but the servo is quite exposed. And I have plans for next iteration, move the motor, battery and servo more inside the wheel and use wider wheels (around 40mm) and a slider/cover for all parts. This is a CAD of how it looks like with 40mm wheels: | |
06-15-2018, 12:01 PM | #130 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Crazy axles idea design
The video looks good, for first test run it appears to be a success. Granted redesigning some stuff will improve it, but for a first test I would be happy with what you have already accomplished . The extra 10mm of width for the wheels will help a bunch to protect electronic devices. |
06-15-2018, 05:55 PM | #131 |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design
After several test I have discovered manny flaws of the design. Main issue is lack of power, something that it was on the table even before testing. The ideas that come up to solve that is to change the gear ratio from 30:1 to 60:1 and reduce the pinions size from M1 to M0.5 If that does not fix it then try to install four 540 motors on each wheel and make a power beast Some other issues are structural issues, one of the axles broke on a small crash, and latter i discovered another crack, on same axel. But that is not bad: I printed the parts strong but not ultra strong so they can break easily in order to improve the design latter, and with that I have already discovered a couple of issues, one is a weak point on the axels design and that PETG is not a good material for RC car parts due its viscoelasticity characteristics. So time to go back to the drawing table |
06-15-2018, 06:05 PM | #132 | |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design Quote:
After the first test i wasn't any happy at all, I expected a lot of different flaws but not such a big problem with low power It makes that I can not test it on rocks so more issues will arrays when I enter in rocks. Well now I have accepted it. It is going to be a long journey... | |
06-15-2018, 06:47 PM | #133 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Crazy axles idea design
I Do wish I had CAD skills. I'm playing with a couple software programs but never seems to be enough time. I will anxiously watch for next updates. |
06-15-2018, 08:53 PM | #134 | |
Newbie Join Date: Oct 2016 Location: NH
Posts: 27
| Re: Crazy axles idea design Quote:
As do we all!! | |
06-16-2018, 02:58 PM | #135 |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design Try Onshape, the learning curve is fast and easy and it is a fully capable CAM software and it is free for hobbyist.
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07-02-2018, 04:38 AM | #136 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Crazy axles idea design
How is the redesign going here?
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07-24-2018, 01:13 PM | #137 |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design
I have been very busy with work issues, and no spare time for hobby I received the new gears some days ago and I hope to have some spare time by the end of mont or in August. Will redesign he gearboxes for the new gears, and will see. |
12-12-2018, 06:15 AM | #138 |
Yashua Join Date: Sep 2010 Location: Learn the parable of the fig tree
Posts: 3,661
| Re: Crazy axles idea design
Have been hoping to see your improvements |
01-03-2019, 03:10 PM | #139 |
Pebble Pounder Join Date: Jan 2018 Location: Spain
Posts: 146
| Re: Crazy axles idea design
Finally I have took some days off this Christmas and done some improvements on the gearboxes design design. Will post pictures and so in a a few days. You can check the design changes here: https://cad.onshape.com/documents/27...1cbb92cec77030 BTW, what happened with the pictures??? |
01-21-2019, 05:50 AM | #140 |
Quarry Creeper Join Date: Dec 2012 Location: Pioneer, 95666
Posts: 397
| Re: Crazy axles idea design
If they were hosted on photobucket, they w w re pro ably removed because photobucket changed their service to make it so you have to pay to embed photos. All that would show is a non working link but no photo.
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