RCCrawler Forums

Duuuuuuuude · 11-19-2011, 03:02 PM

So Kuatto has been hounding me pretty hard about the 20mm Vulcan I made earlier this year. I was geared up to send it to him but it had gone MIA. Couldn't find it anywhere.

I felt bad and decided to make a new one and donate it to his 8x8 build. Can't have a military vehicle without a big ass gun on it, right?

The barrels are the easy part. Brass plate drilled to accept 3/32 steel rod, all silver soldered together. This one is more compact and truer to scale than the first. Roughly 2" long (after the excess is cut off) and a hair under 3/8" wide.

Of course you can't have a Vulcan unless it spins, so I reached into my bag of blown servos and pulled out an old TP for motorization/turret casing. I'm thinking a bastardized internal gear system/rubber band drive should do the trick. The center shaft will go all the way through the servo and ride on bearings. Preliminary testing has shown it to spin freely.

If there is an electronics guru reading this, I'd like to find a way to turn it on/off using the radio.

Duuuuuuuude · 11-19-2011, 04:21 PM

Barrel and center shaft mounted in the servo case.

A quick test...

Vulcan spin test

kuatto · 11-19-2011, 08:44 PM

Its a thing of beauty....it looks great and spins pretty fast,can't wait to get it mounted and have it work while driving.

Duuuuuuuude · 11-19-2011, 08:49 PM

Thats the drill thats spinning it, not sure yet how fast the servo motor will spool it up.

Not too much left to do. Gotta find some tiny rubber bands for drive belts and find a way to turn it on and off through the receiver.

It'd also be cool if I could get it to make a "braaaaaaap" noise.

Knytemare · 11-19-2011, 09:45 PM

That is one of the coolest things I've seen yet!

ROSS · 11-20-2011, 07:31 PM

Quote:

Originally Posted by Duuuuuuuude

Thats the drill thats spinning it, not sure yet how fast the servo motor will spool it up.

Not too much left to do. Gotta find some tiny rubber bands for drive belts and find a way to turn it on and off through the receiver.

It'd also be cool if I could get it to make a "braaaaaaap" noise.

just use a 3racing winch controller to hook to the receiver to turn on and off.

to make a "braaaap" noise put a piece of thin plastic into the barrels, much like kids used to do with baseball cards in their bike spokes.

looks awesome.

cameraman · 11-20-2011, 07:53 PM

go to toys r us and find some belted ammo for it as well and ammo cans

stelerzman · 11-22-2011, 04:24 PM

That's freaking killer, how about a high speed servo, would that spin it fast enough? Great job.

ROLANDROCKSHOP · 11-22-2011, 04:55 PM

looks great!

how about a small micro heli motor for powering it,or small airplane motor..?

unless you needed to use the servo housing...

Duuuuuuuude · 11-22-2011, 05:23 PM

It needs something to keep it stable when it spools up, otherwise I could hook it right to a motor and make it go.

kuatto · 11-22-2011, 07:58 PM

Your getting right into this gun,lol,can't wait to see what the final outcome is..

ROCKEDUP RICKY · 11-23-2011, 06:49 PM

Quote:

Originally Posted by ROSS

just use a 3racing winch controller to hook to the receiver to turn on and off.

to make a "braaaap" noise put a piece of thin plastic into the barrels, much like kids used to do with baseball cards in their bike spokes.

looks awesome.

I wonder if there is room to make a flapper on the inside of the servo box. Or tear into some toy gun that makes sound and tie it into the on and off switch.
Look in the birthday cards, maybe there's a gun noise in one of them.

Or the operator could make mouth noises.

I think it's really cool. I wish I had a real one on my top of my work truck.

Duuuuuuuude · 11-23-2011, 06:52 PM

The barrels won't actually go into the case, though I could make something stick out.

I think my next one will actually fire bullets. That should give me a chance against Szczerba and his new sportsman rig.

ROLANDROCKSHOP · 11-23-2011, 07:20 PM

oh if you could only feed this thru it....

...

Duuuuuuuude · 11-23-2011, 07:34 PM

Only problem is they don't make those like they used to. Today's caps are more like "dud pop dud dud dud pop pop dud dud dud dud dud dud dud pop" .

stelerzman · 11-28-2011, 04:23 PM

Quote:

Originally Posted by Duuuuuuuude

Only problem is they don't make those like they used to. Today's caps are more like "dud pop dud dud dud pop pop dud dud dud dud dud dud dud pop" .

:l mao:

rbgerrish · 12-02-2011, 04:13 PM

That's cool! Might have to build one for the Argus.

Duuuuuuuude · 12-02-2011, 04:16 PM

Quote:

Originally Posted by rbgerrish

That's cool! Might have to build one for the Argus.

Just one?

imperium · 12-08-2011, 07:35 PM

couldnt it just be set to run off 3rd channel?

skinner · 12-08-2011, 10:44 PM

Duuuuuuuude that is one sick barrel lol, I like it!!! But yea tear into a toy gun that has sound and wire it to servo motor should be wicked.

11-19-2011, 03:02 PM	#1
Duuuuuuuude Suck it up! Join Date: Mar 2008 Location: Arkansas Posts: 11,652	Mini Vulcan Cannon 2.0 So Kuatto has been hounding me pretty hard about the 20mm Vulcan I made earlier this year. I was geared up to send it to him but it had gone MIA. Couldn't find it anywhere. I felt bad and decided to make a new one and donate it to his 8x8 build. Can't have a military vehicle without a big ass gun on it, right? The barrels are the easy part. Brass plate drilled to accept 3/32 steel rod, all silver soldered together. This one is more compact and truer to scale than the first. Roughly 2" long (after the excess is cut off) and a hair under 3/8" wide. Of course you can't have a Vulcan unless it spins, so I reached into my bag of blown servos and pulled out an old TP for motorization/turret casing. I'm thinking a bastardized internal gear system/rubber band drive should do the trick. The center shaft will go all the way through the servo and ride on bearings. Preliminary testing has shown it to spin freely. If there is an electronics guru reading this, I'd like to find a way to turn it on/off using the radio. Last edited by Duuuuuuuude; 11-19-2011 at 03:07 PM.

11-19-2011, 04:21 PM	#2
Duuuuuuuude Suck it up! Join Date: Mar 2008 Location: Arkansas Posts: 11,652	Barrel and center shaft mounted in the servo case. A quick test... Vulcan spin test

11-19-2011, 08:44 PM	#3
kuatto Rock Crawler Join Date: Jun 2007 Location: Nova Scotia,Canada Posts: 561	Its a thing of beauty....it looks great and spins pretty fast,can't wait to get it mounted and have it work while driving.

11-19-2011, 08:49 PM	#4
Duuuuuuuude Suck it up! Join Date: Mar 2008 Location: Arkansas Posts: 11,652	Thats the drill thats spinning it, not sure yet how fast the servo motor will spool it up. Not too much left to do. Gotta find some tiny rubber bands for drive belts and find a way to turn it on and off through the receiver. It'd also be cool if I could get it to make a "braaaaaaap" noise.

11-19-2011, 09:45 PM	#5
Knytemare Rock Crawler Join Date: May 2005 Location: Fort Wayne Posts: 728	That is one of the coolest things I've seen yet!

11-20-2011, 07:53 PM	#7
cameraman Pebble Pounder Join Date: Sep 2011 Location: edgewater Posts: 138	go to toys r us and find some belted ammo for it as well and ammo cans

11-22-2011, 04:24 PM	#8
stelerzman I wanna be Dave Join Date: Sep 2009 Location: n. palm beach Posts: 4,123	That's freaking killer, how about a high speed servo, would that spin it fast enough? Great job.

11-22-2011, 04:55 PM	#9
ROLANDROCKSHOP I wanna be Dave Join Date: Mar 2007 Location: roland,ar Posts: 5,981	looks great! how about a small micro heli motor for powering it,or small airplane motor..? unless you needed to use the servo housing...

11-22-2011, 05:23 PM	#10
Duuuuuuuude Suck it up! Join Date: Mar 2008 Location: Arkansas Posts: 11,652	It needs something to keep it stable when it spools up, otherwise I could hook it right to a motor and make it go.

11-22-2011, 07:58 PM	#11
kuatto Rock Crawler Join Date: Jun 2007 Location: Nova Scotia,Canada Posts: 561	Your getting right into this gun,lol,can't wait to see what the final outcome is..

11-23-2011, 06:52 PM	#13
Duuuuuuuude Suck it up! Join Date: Mar 2008 Location: Arkansas Posts: 11,652	The barrels won't actually go into the case, though I could make something stick out. I think my next one will actually fire bullets. That should give me a chance against Szczerba and his new sportsman rig.

Sponsored Links

11-23-2011, 07:20 PM	#14
ROLANDROCKSHOP I wanna be Dave Join Date: Mar 2007 Location: roland,ar Posts: 5,981	oh if you could only feed this thru it.... ...

11-23-2011, 07:34 PM	#15
Duuuuuuuude Suck it up! Join Date: Mar 2008 Location: Arkansas Posts: 11,652	Only problem is they don't make those like they used to. Today's caps are more like "dud pop dud dud dud pop pop dud dud dud dud dud dud dud pop" .

12-02-2011, 04:13 PM	#17
rbgerrish I wanna be Dave Join Date: Mar 2004 Location: The Haunted Forest Posts: 3,586	That's cool! Might have to build one for the Argus.

12-08-2011, 07:35 PM	#19
imperium Newbie Join Date: Mar 2009 Location: victoria Posts: 38	couldnt it just be set to run off 3rd channel?

12-08-2011, 10:44 PM	#20
skinner Quarry Creeper Join Date: Nov 2006 Location: out in boonies!! Posts: 349	Duuuuuuuude that is one sick barrel lol, I like it!!! But yea tear into a toy gun that has sound and wire it to servo motor should be wicked.

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