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12-04-2017, 04:00 AM | #41 | |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion Quote:
as for the actuator height I did the measurements with the tires on originally (have them mocked up on the dump truck now). in the video I have the front of the loader propped up a little, which make is look like the bucket doesn't come down as far. with the tires on the bucket lays flat on the ground. (if I need to dig a little I can just tilt the bucket.) | |
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12-19-2017, 08:40 AM | #42 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion
Finally had a little time to work on the loader. Got all the actuators installed and working. While hydraulics would obviously be stronger I'm pretty happy with this setup. https://youtu.be/bThRuOFNBxY Now it is time to tear both rigs down so I can get them painted. After that it will be playtime! |
12-19-2017, 10:50 AM | #43 |
I joined the Band! Join Date: Jul 2011 Location: Philippines
Posts: 1,405
| Re: jebster's tonka truck rc conversion
Wow thats killer!!!!!!
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12-20-2017, 03:51 PM | #44 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion |
12-20-2017, 07:18 PM | #45 |
I wanna be Dave Join Date: Apr 2013 Location: Streamwood, IL
Posts: 2,442
| Re: jebster's tonka truck rc conversion
Check Shape_Shifter's "Tracked FPV Build", a couple threads below yours, he recently found one on ebay
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12-20-2017, 07:55 PM | #46 | |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion Quote:
https://rover.ebay.com/rover/0/0/0?m...2F222540080439 Only issue is I don't know it it is narrow enough to fit under the tonka dozer. | |
05-23-2018, 06:16 PM | #47 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion
DONE! It took a long time but I got them painted and reassembled. I really like how they turned out. Now I need to get them out in the sandbox for some fun. I'm looking forward to getting the bulldozer running now. https://youtu.be/R1RkGL5ZlI0 https://youtu.be/vjb7_1g_UEw |
05-23-2018, 08:27 PM | #48 |
I wanna be Dave Join Date: Apr 2013 Location: Streamwood, IL
Posts: 2,442
| Re: jebster's tonka truck rc conversion
The linear actuators give your equipment a more realistic action than the servos would have, well done |
05-23-2018, 08:32 PM | #49 |
RCC Addict Join Date: Aug 2008 Location: Paulina
Posts: 1,213
| Re: jebster's tonka truck rc conversion
Very cool! Both trucks came out great!
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05-24-2018, 12:00 PM | #50 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion |
05-24-2018, 01:51 PM | #51 |
I wanna be Dave Join Date: Jun 2006 Location: Here
Posts: 2,282
| Re: jebster's tonka truck rc conversion
I think a lot of your steering issues stem from the axles being locked and the vehicle weighing quite a lot. Almost like holding a steering axle and expecting the rear end to sweep left and right. As far as your track drive: check out the Blizzard drivetrain, that had a single motor and applied the brakes to diff driven axles. Last edited by Gula; 05-24-2018 at 01:54 PM. |
05-24-2018, 04:58 PM | #52 | |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion Quote:
I had been considering the blizzard. I had the original nitro with a diff/brakes setup and currently I have the dual motor version. I am leaning towards dual motor with a sabertooth esc. The drivetrain is in my head so I just need to start mocking it up. | |
05-24-2018, 05:41 PM | #53 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,475
| Re: jebster's tonka truck rc conversion
Great job on the paint, thats quite the transformation!
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05-25-2018, 01:56 PM | #54 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion Thanks. It was pretty straightforward. All spray can work. A primer made for rusty surfaces then CAT yellow. Had to order the CAT yellow because I couldn't find it in any local stores. Good thing about that is I only used 2 of the 6 pack I had to buy so I have plenty for future tonka projects!
Last edited by jebster; 05-25-2018 at 04:00 PM. |
05-25-2018, 02:14 PM | #55 |
Moderator Join Date: Sep 2008 Location: PA
Posts: 13,918
| Re: jebster's tonka truck rc conversion
Awesome builds! |
05-26-2018, 05:07 PM | #56 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion
Started mocking up the drivetrain for the bulldozer. I have some bevel gears 16t / 32t I'm going to use for a simple gearbox. I'm thinking about a direct drive with a pair of brushed motors controlled by the saber tooth esc. I like the saber tooth because I can mix the steering and throttle and use my pistol radio. The real question on the direct drive is what turn motor to get. I was thinking something in the 80t range but haven't done the math yet. For the drive wheels I have a simple solution on how to engage the tracks. I'm going to install hex standoffs (16 total) around the outer edge of the wheel. |
06-01-2018, 07:01 PM | #57 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion
Got some work done on the drive wheels. They should work out fine. Also got my motors in the mail today. Looking forward to fabricating the mount.
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06-03-2018, 12:44 PM | #58 | |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion Quote:
I didn't do anything special for the paint. Just a primer and then the color. Here is what I used. Last edited by jebster; 06-03-2018 at 02:00 PM. | |
06-23-2018, 11:27 AM | #59 |
I wanna be Dave Join Date: May 2010 Location: The east coast
Posts: 2,598
| Re: jebster's tonka truck rc conversion
Making good progress on the bulldozer. All painted and drivetrain installed. Still need actuators for the blade so that is work to go. And the short actuator on the back will be for a ripper blade I plan on adding. I know that isn't original but I thought it will look nice. Took it for its first drive in the basement and it works as expected. It is a little slow but that is running on a 2s battery. Hopefully 3s gives it a little more. I have ran into one problem. The tabs on the tracks that engage with the drive wheels are just a fraction closer than I measured. That means every couple rotations one of the tabs lands on top of a standoff and causes the belt to stick out. I tried removing every other standoff and that helped a little but it isn't perfect. I think I'm going to just switch over to some long bolts with no standoffs. That would limit the area a belt tab can land on top of so I hope it just slides to one side or the other of the bolt. You can see what I'm talking about in the second video. I'm also excited because I picked up some trucks for future projects. Have a bunch of ideas on how I will make them work! https://youtu.be/D9-CTJHbKgU https://youtu.be/efxIIVCk56M |
06-23-2018, 03:14 PM | #60 |
I wanna be Dave Join Date: Apr 2013 Location: Streamwood, IL
Posts: 2,442
| Re: jebster's tonka truck rc conversion
You're going to have the Tonka Construction Co. complete soon. Still need the Road Grader and the Crane yet . Great job on the Crawler , works well even with the wobble. |
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