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#1
03-13-2007, 12:58 PM
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HELP!! Need to cast or mold...need info!!!!
I have a RC car and i recently stripped the gear in the steering. I can`t find a gear and I tried hand cutting one from a bigger one...it lasted 1 day! (stripped again)
There are 2 gears in it and they are both the same size, so I was thinking of making a mold with the remaining one and casting the one I need. Any idea how to do it? What mold material should I use? What casting material also? The gear is in high stress as this is a high speed drift RC. Thank you very much. - Nick (PS: I know I'm in the wrong forum, but I'm a model guy so it's the only place I could think of!  )
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#2
03-13-2007, 01:29 PM
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Re: HELP!! Need to cast or mold...need info!!!!
Stripped a gear where in the steering? In the steering servo?
Servo manufacturers often sell replacement gears, and they tend to be pretty cheap. If it's a high stress component, home casting isn't going to be a realistic option. It would also likely be much cheaper to buy a replacement than it would be to buy casting materials.
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PHOTOBUCKET SUCKS
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#3
03-13-2007, 01:29 PM
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Re: HELP!! Need to cast or mold...need info!!!!
This may not be the way to go. You can go about casting your own, but they probably won't be strong enough to hold up if it's a running gear you're wanting to make.
Check this thread for some of the sources we use for our mold making and casting materials. http://www.automotiveforums.com/vbul...d.php?t=680637 Here's a nice walk-through on how to use them (basically.) http://www.automotiveforums.com/vbul...d.php?t=188447 http://www.automotiveforums.com/vbul...d.php?t=189039
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#4
03-13-2007, 01:59 PM
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Re: HELP!! Need to cast or mold...need info!!!!
The gear is a guiding gear....it guides a pin attached to a sensor which knows how far to straighten the wheels.
I'll post pics when I get home...I'm at school
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#5
03-13-2007, 02:04 PM
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Re: HELP!! Need to cast or mold...need info!!!!
YAY!! I finaly remembered my Username!! no more modelfreakca....lol
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Quote:
 1990 Honda Civic DX - Getting custom!! Needs battery  I need parts for my car. Please contact me via PM if you have anything to get rid of
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#6
03-13-2007, 03:07 PM
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REPOST - "Help!! Need to cast or mold...need info!!!!"
I have reposted with my old username....finaly remembered! lol
I have a RC car and I recently stripped the gear in the steering. I can't find a gear and I tried hand cutting one from a bigger one...it lasted 1 day! (stripped again) There are 2 gears in it and they are both the same size, so I was thinking of making a mold with the remaining one and casting the one I need. Any idea how to do it? What mold material should I use? What casting material also? The gear is in high stress (jerks from cracks in the road) as this is a high speed RC. The gear is 1 of 4 gears in the box; 2 gears to turn and 2 gears for the sensor to straighten out the wheels. The one stripped is a sensor gear. I will post pics later on to show. Thank you very much. - Nick (PS: I know I'm in the wrong forum, but I'm a model guy so it's the only place I could think of! )
__________________
Quote:
1990 Honda Civic DX - Getting custom!! Needs battery I need parts for my car. Please contact me via PM if you have anything to get rid of
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