RCCrawler Forums

kawika · 07-16-2007, 02:16 PM

I've been looking for stronger gears (metal or derlin) for the PTI axles. They use the same gears as the TC3/NTC3. I haven't found any. Now, I'm looking to have some made. How are these types of gears usually made? Do I take the plastic gears to a machine shop and have them make a copy? Is a mold made and the gears cast in the mold? Or, are they usually made on a CNC machine after creating a 3D image? Am I looking at $100, $200, $500?

'83 chevy · 07-16-2007, 05:54 PM

Its done on machines. Cutting gears is a difficult process. I was at my uncles machine shop watching him do it before, and there was a lot of math involved in determining the number of teeth you want, then figuring out the pitch and depth of the teeth. I took him over an half an hour to figure out just one small gear. You'd be lucky to get out for less than $100.

kawika · 07-17-2007, 03:05 AM

$100 per gear:-( ?

Mnster · 07-17-2007, 03:59 AM

Yeah pretty much.

Mike Poulson · 07-17-2007, 08:35 AM

First you need a CAD drawing, then have a 100 gears made. $5-$15 each I would guess.

It appears that the reason there are no metal gears for the TC3\TC4 is they don't have problems with the stock gears. But if you have a bunch made I will buy some from you.

MikeP

WheelChair · 07-17-2007, 11:53 AM

Bust out the file like I did.

Cost me $2.25 for a file and I had the aluminum layin around!

666 · 07-17-2007, 12:49 PM

Did you find the file?

Mnster · 07-17-2007, 01:19 PM

Quote:

Originally Posted by WheelChair

Bust out the file like I did.

Cost me $2.25 for a file and I had the aluminum layin around!

kawika · 07-17-2007, 02:38 PM

Thanks guys. Maybe I can get associated to give me a copy of their CAD drawing

. I think I'll ask, just for fun.

JoeWorks · 07-19-2007, 03:52 PM

Check this site out http://www.sdp-si.com/

Cad files for most of the gears they sell is available for download. I use the files for planning my projects.

Aloha

ON THE FARM · 07-21-2007, 11:07 PM

I'm not familiar with the gears you are talking about but, if all you need is a straight cut gears you can go to a machine shop with the gear in one hand and a checkbook in the other and they can cut you gears out of what ever you want (as long as it can be machined). most shops that do cut gears will need the pitch (32, 48 or what ever) and id for the shaft. or you can go to stock drive products http://www.stockdriveproducts.com/ and search what you need. also if you are set up to cut gears it is not a difficult process, a 72 tooth 32 pitch spur can be cut in about an hour including set up time.

EDIT*****SORRY I NEED TO READ A LITTLE CLOSER NEXT TIME..........................

07-16-2007, 02:16 PM	#1
kawika Quarry Creeper Join Date: Apr 2007 Location: Kapahulu Safeway Posts: 281	Metal Gear Fabrication I've been looking for stronger gears (metal or derlin) for the PTI axles. They use the same gears as the TC3/NTC3. I haven't found any. Now, I'm looking to have some made. How are these types of gears usually made? Do I take the plastic gears to a machine shop and have them make a copy? Is a mold made and the gears cast in the mold? Or, are they usually made on a CNC machine after creating a 3D image? Am I looking at $100, $200, $500?

07-17-2007, 02:38 PM	#9
kawika Quarry Creeper Join Date: Apr 2007 Location: Kapahulu Safeway Posts: 281	Thanks guys. Maybe I can get associated to give me a copy of their CAD drawing. I think I'll ask, just for fun.

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07-16-2007, 05:54 PM	#2
'83 chevy Rock Crawler Join Date: Feb 2006 Location: Easthampton Posts: 747	Its done on machines. Cutting gears is a difficult process. I was at my uncles machine shop watching him do it before, and there was a lot of math involved in determining the number of teeth you want, then figuring out the pitch and depth of the teeth. I took him over an half an hour to figure out just one small gear. You'd be lucky to get out for less than $100.

07-17-2007, 03:05 AM	#3
kawika Quarry Creeper Join Date: Apr 2007 Location: Kapahulu Safeway Posts: 281	$100 per gear:-( ?

07-17-2007, 03:59 AM	#4
Mnster MWRCA'er Join Date: Apr 2004 Location: Machesney Park IL Posts: 3,995	Yeah pretty much.

07-17-2007, 08:35 AM	#5
Mike Poulson Quarry Creeper Join Date: Jan 2006 Location: SLC Posts: 382	First you need a CAD drawing, then have a 100 gears made. $5-$15 each I would guess. It appears that the reason there are no metal gears for the TC3\TC4 is they don't have problems with the stock gears. But if you have a bunch made I will buy some from you. MikeP

07-17-2007, 11:53 AM	#6
WheelChair Winner of the '07 RCC dumbass award! Join Date: Nov 2006 Location: Up on a Mountain, out in the Woods Posts: 661	Bust out the file like I did. Cost me $2.25 for a file and I had the aluminum layin around!

07-17-2007, 12:49 PM	#7
666 MODERHATER™ Join Date: Nov 2005 Location: Colorado Posts: 10,939	Did you find the file?

07-19-2007, 03:52 PM	#10
JoeWorks Quarry Creeper Join Date: Mar 2006 Location: Mililani Posts: 229	Check this site out http://www.sdp-si.com/ Cad files for most of the gears they sell is available for download. I use the files for planning my projects. Aloha

07-21-2007, 11:07 PM	#11
ON THE FARM Quarry Creeper Join Date: Aug 2006 Location: NORTH TEXAS Posts: 202	I'm not familiar with the gears you are talking about but, if all you need is a straight cut gears you can go to a machine shop with the gear in one hand and a checkbook in the other and they can cut you gears out of what ever you want (as long as it can be machined). most shops that do cut gears will need the pitch (32, 48 or what ever) and id for the shaft. or you can go to stock drive products http://www.stockdriveproducts.com/ and search what you need. also if you are set up to cut gears it is not a difficult process, a 72 tooth 32 pitch spur can be cut in about an hour including set up time. EDIT*****SORRY I NEED TO READ A LITTLE CLOSER NEXT TIME..........................

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