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Scale 4x2 and Buggy R/C vehicles This is the place to put your Sand Scorchers, Bajas and other various 2wd offroad R/C's


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  #1  
Old 11-17-2015, 05:16 PM
Pintopower Pintopower is offline
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Default Project Half Scale Tamiya Hornet

They say less is more.

“They” must be referring to RC Cars. Cost is directly inverse to the size of an RC car. This is a fact that I have recently come to find out. I have decided to make a ˝ scale Hornet. Why? Well I modeled the thing completely so why not? We have hardware at the office down to M0.6 and more threaded rod and rod stock than you can imagine. I have found bearing for a 1mm shaft and I even plan on 3D printing and wiring a motor for the car, as we have successfully done it already. This is going to be a fun but long project as it has been in the works for 2 years already. This is just something fun to see if it can be done. And yes, it will be fully operational! We will even be 3D printing organic rubber tires for it.

Adorable:


Just off the printer, covered in support material:




Scraped off:


More images:


Tiny gears!

Belly of the larvae:

I will make a tiny battery shell with a lipo embedded in it. Maybe a Tamiya 6V hard pack:

3D printed mini 4wd motor. The metal was taken out of a standard one but the high temp printed shaft worked great. The plan is to magnetize 3d printed metal for the next version of this along with a laser sintered shaft.



Wish me luck. I think I will need it.
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  #2  
Old 11-17-2015, 05:49 PM
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Oh boy, this is a project I can get behind. It really does look like a bug when you shrink it down.
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Old 11-18-2015, 12:08 PM
Pintopower Pintopower is offline
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Thanks I think it will be fun and a total pain in the a$$. Yeah I know it does look like an insect at that size.
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Old 11-18-2015, 02:50 PM
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Wow! You make my day!

Super idea. Love to see it finished.
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Old 11-18-2015, 04:29 PM
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Looking good.
But when I saw the title of this thread I expected to see a bigger version of the Hornet, not a smaller one.
IMO this is 1/20 scale, not 1/2 scale.
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Old 11-18-2015, 07:43 PM
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Well technically it is half scale because there is no 1:1 hornet
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Old 11-18-2015, 08:18 PM
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Quote:
Originally Posted by duellym View Post
Well technically it is half scale because there is no 1:1 hornet
Technically, the original is 1/10 scale, so 1/2 scale would be bigger not smaller.
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Old 11-18-2015, 08:51 PM
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He means it's half of the 1/10 scale Hornet, because there is no full-sized Hornet, meaning the 1/10 scale Hornet is technically the 1:1 Hornet.

Quick, Pintopower, post something before these numbers get out of hand!
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Old 11-18-2015, 08:54 PM
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Yeah... What he said.
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Old 11-18-2015, 09:05 PM
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Quote:
Originally Posted by HyperMark View Post
Technically, the original is 1/10 scale, so 1/2 scale would be bigger not smaller.
But...but....what if it's a 1/2 scale of the 1/10 scale? Wouldn't that make it 1/5 scale?
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Old 11-18-2015, 09:08 PM
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Are you going to be doing the upgrades you did for the full size hornet?
This thing is super awesome!
For the rubber prints, are you doing something similar to Ninjaflex? Obviously, that's FDM and you're doing Resin. Just curious.
Also, are you doing the printed motor just because you can? The reason I ask is because the steel case and the Iron of the Arm are key to the efficiency of the magnetic propagation. The prints look absolutely amazing. You could look into "fat" comms for 130 motors that would give you back some of the torque you've lost without the ferrous materials.
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Old 11-20-2015, 12:57 PM
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Quote:
Originally Posted by danielk View Post
Are you going to be doing the upgrades you did for the full size hornet?
This thing is super awesome!
For the rubber prints, are you doing something similar to Ninjaflex? Obviously, that's FDM and you're doing Resin. Just curious.
Also, are you doing the printed motor just because you can? The reason I ask is because the steel case and the Iron of the Arm are key to the efficiency of the magnetic propagation. The prints look absolutely amazing. You could look into "fat" comms for 130 motors that would give you back some of the torque you've lost without the ferrous materials.
Thank you! No this will be pretty much a stock hornet. I think this one will be challenging enough before I throw all my upgrade on it! The 1/10 one is already bad enough to work on. For the tires I was thinking about Ninja flex but we needed to used the TangoBlack on the Eden so I used that. It is weaker but softer. As for the motor, I was doing it just to see if i could. The car will get a real motor most likely.


As for the rest of you, a lot of talk of scale is going on! Yes my thought was that this is 1/2 of a Hornet. Since tamiya made 1/6 versions of the 1/10 version of the Hornet, i figured I would set 1:1 as the 1:10 of the Hornet. Wait, what? im confused now. Its smaller, that's all I can say. Lol.
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Old 11-20-2015, 01:41 PM
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Quote:
Originally Posted by Pintopower View Post

Yes my thought was that this is 1/2 of a Hornet. Since tamiya made 1/6 versions of the 1/10 version of the Hornet, i figured I would set 1:1 as the 1:10 of the Hornet. Wait, what? im confused now. Its smaller, that's all I can say. Lol.
1/2 of 1/10 scale wouldn't be 1/5 scale since 1/5 scale is way bigger than 1/10. would 1/2 of 1/10 scale be 1/20 of the real one or the scale one?
Lets just call it small scale. So far it's looking really good.
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Old 11-20-2015, 02:20 PM
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Last night I kicked off a print of the tires. I had been dying to try this so now was as good a time as any. The material is called Tango Black. It isn't ninja flex which is genuinely better but I wanted to try the Tango Black. Since I scaled down the original designs I made, I had to thicken the tire walls. They are now 2.0mm thick and the bead has been altered to accept 1 piece rims which I have yet to combine as the stock ones a 3 pieces. I also reduced the crown of the front tires as I wanted more surface contact. I spent forever cleaning these since the inside of each tire was full of the support material required to make them. I must say, they came out way better than I even imagined!






While they were getting cleaned. I love interns.

Size comparison:



Yes yes I know the knobs aren't offset...
Soft and squishy:



More updates to come!
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  #15  
Old 11-20-2015, 03:39 PM
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Wow, those look awesome! I'm always surprised at how far 3d printing has come since I first heard about it years ago (long before Shapeways existed). I don't really mess with it myself, so I'm out of the loop, but I'm always impressed when I see new materials being printed or increases in print detail. Crazy stuff.
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