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RC Truck and Construction (https://www.rctruckandconstruction.com/index.php)
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-   -   Great Dane excavating co. (https://www.rctruckandconstruction.com/showthread.php?t=9048)

Supermario 11-03-2015 09:27 PM
Re: Great Dane excavating co.
 
Quote:
Originally Posted by RCP57 (Post 134088)

Please note that I have refrained from commenting on certain posts....
Atta boy Reg! :lol::lol: I'd like you to stick around for awhile.

Cooper 11-03-2015 09:31 PM
Re: Great Dane excavating co.
 
Quote:
Originally Posted by RCP57 (Post 134088)
Wow, that's just super:bounce::bounce:! The tire looks OK too I guess.:p

Seriously, that looks fantastic for a first attempt! It's too bad the materials cost so much because I'm sure if you built a few more they would be perfect before too long. Keep up the great work!

Please note that I have refrained from commenting on certain posts....
Yeah, I see the possibility of a reprimand. Lol!!!

And yes this isn't on the cheep side. I did look at other materials but longevity won out. And went with this type. I really didn't spent much time with the part prior to making the mold. Figured equipment tire a few blemishes,,,,, I think I'm going to start working on a two piece rim and the axle next. Figure if a design change needs to happen better not make them all. I'm trying to make the weight of the truck on the axle and not on the motor shaft. Like a post of joes when he was building the adt. Any idea where to source 1 1/2 I d bearings that are not much bigger on the o.d.? And cheep?

RCP57 11-03-2015 09:34 PM
Re: Great Dane excavating co.
 
Are you planning to run two of those planetary motors in the back ground of that one picture? I have one of them in the rear of my Tigercat(smaller motor in front) and it works pretty well. I'm running 165rpm motor with a 2.6:1 axle ratio and the speed is on the high end of usable with a nearly 8" tire. It could stand to have more power though. I would guess you will want this to be in the 30-40rpm range if you are using a direct drive so those motors would have more torque? What height are these tires again? KP used one big planetary motor in his 1/12 Kamatsu truck so two of these little guys should be close.

RCP57 11-03-2015 09:37 PM
Re: Great Dane excavating co.
 
Quote:
Originally Posted by Supermario (Post 134090)
Atta boy Reg! :lol::lol: I'd like you to stick around for awhile.
I don't want everyone to think I'm a rude boy.;)

Cooper 11-03-2015 09:37 PM
Re: Great Dane excavating co.
 
Quote:
Originally Posted by Supermario (Post 134087)
It don't take long and the tires aren't black anyway. More of a grey tone afterawhile. :)
Hydraulic steering might not be a bad idea for this beast......so, handmade dump cylinders, soon to be steering.....your almost there! All that's left is make the worlds smallest nitrogen charged suspension cylinders!:eek::D

Something tells me the motors are gonna run the same price as the mad cat motors? :rolleyes::eek:
Why not? Lol!!! And to think this was going to be a relative easy build!!!! Everyone says never underestimate yourself? I always overestimate!!! I did pick up some fairly inexpensive planetary gear head motors from servo city. 118 rpm might be a little slow. They use a 540size motor (I think) I'm basing the drive system on them. Cheep enough to possibly replace with faster. Hard part is trying to secure them and build the axle so weight of machine and payload is on axle not on 6mm motor shaft.

Cooper 11-03-2015 09:39 PM
Re: Great Dane excavating co.
 
Quote:
Originally Posted by RCP57 (Post 134092)
Are you planning to run two of those planetary motors in the back ground of that one picture? I have one of them in the rear of my Tigercat(smaller motor in front) and it works pretty well. I'm running 165rpm motor with a 2.6:1 axle ratio and the speed is on the high end of usable with a nearly 8" tire. It could stand to have more power though. I would guess you will want this to be in the 30-40rpm range if you are using a direct drive so those motors would have more torque? What height are these tires again? KP used one big planetary motor in his 1/12 Kamatsu truck so two of these little guys should be close.
Give me a min, I'll go look.

Cooper 11-03-2015 09:44 PM
Re: Great Dane excavating co.
 
http://i1357.photobucket.com/albums/...psdybl5563.jpg
Yup these should work?

bigford 11-03-2015 09:46 PM
Re: Great Dane excavating co.
 
that little motor for that big rig LOL!!!

Cooper 11-03-2015 09:49 PM
Re: Great Dane excavating co.
 
Lol, picked them up for another project,
http://i1357.photobucket.com/albums/...pscl2qvyvj.jpg
http://i1357.photobucket.com/albums/...psn2nfsfpe.jpg

These are what I'm planning on using. I'm planning on running them inside the axle. So two in the rear. And was also thinking of using some radio mixing to control them independently. Act as a locking axle or slip for tight turning. So you think 118 rpm at axle may be on the fast side?

Cooper 11-03-2015 09:52 PM
Re: Great Dane excavating co.
 
Quote:
Originally Posted by bigford (Post 134097)
that little motor for that big rig LOL!!!
Haha got ya, check your mail!!!

RCP57 11-03-2015 09:55 PM
Re: Great Dane excavating co.
 
You want it to be able to do this right?...https://youtu.be/LtbxUR9raN0?list=PL...PKlAqXQU81-vMh This has the 165rpm planetary in the rear. Motor is almost stalled but tires are slipping on rims.

I looked but none of the videos show it's speed very well. This is with two 152rpm gutless motors driving the axles(2.6:1)... https://www.youtube.com/watch?v=rAHZ...PKlAqXQU81-vMh

Cooper 11-03-2015 09:56 PM
Re: Great Dane excavating co.
 
Quote:
Originally Posted by Supermario (Post 134087)
It don't take long and the tires aren't black anyway. More of a grey tone afterawhile. :)
Hydraulic steering might not be a bad idea for this beast......so, handmade dump cylinders, soon to be steering.....your almost there! All that's left is make the worlds smallest nitrogen charged suspension cylinders!:eek::D

Something tells me the motors are gonna run the same price as the mad cat motors? :rolleyes::eek:
https://www.servocity.com/html/118_r...l#.VjlzPHA8KrU
$40 , Catt motors another "0" and then some:jaw:

bigford 11-03-2015 09:59 PM
Re: Great Dane excavating co.
 
LOL!!!! wow you just wrong!!

bigford 11-03-2015 10:02 PM
Re: Great Dane excavating co.
 
you got mail.....

RCP57 11-03-2015 10:09 PM
Re: Great Dane excavating co.
 
Now I feel like I am missing out on the "special" pictures...:lol:

Cooper 11-03-2015 10:13 PM
Re: Great Dane excavating co.
 
Just a fist full of joy,, go ahead mark load up reg's mailbox.

RCP57 11-03-2015 10:19 PM
Re: Great Dane excavating co.
 
I feel like my computer might need penicillin now:eek::jaw:

bigford 11-03-2015 10:20 PM
Re: Great Dane excavating co.
 
http://rs1152.pbsrc.com/albums/p497/...d-out.jpg~c200

the look on your face after opening a email from RW

RCP57 11-03-2015 10:27 PM
Re: Great Dane excavating co.
 
:jaw: I think this best represents my eyes and the picture sent all in one.

Old Guy 11-03-2015 10:46 PM
Re: Great Dane excavating co.
 
Cooper

Great tire for first try, my first one was right on then I got cocky and 2cd one was a disaster, keep it up

Earl


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