One thing I learned about injection molding is that you can't mold a part with a long hole through it. Even a 1" long hole would need a substantial cone shape to it to provide enough draft to release the part form the mold. It makes sense when you think about how the mold works and the parts are produced. You can use a 'sliding shutoff' technique, but that would produce a part with a lot less strength right where a track link needs it - along the joining pin. - Doug
----- Original Message ----- From: [email protected] To: "rctankcombat" <[email protected]> Sent: Tuesday, February 10, 2015 3:34:15 PM Subject: Re: [TANKS] New Track Idea One thing I learned about injection molding is that you can't mold a part with a long hole through it. Even a 1" long hole would need a substantial cone shape to it to provide enough draft to release the part form the mold. It makes sense when you think about how the mold works and the parts are produced. You can use a 'sliding shutoff' technique, but that would produce a part with a lot less strength right where a track link needs it - along the joining pin. - Doug ----- Original Message ----- From: "Frank Pittelli" <[email protected]> To: "rctankcombat" <[email protected]> Sent: Tuesday, February 10, 2015 1:59:41 PM Subject: Re: [TANKS] New Track Idea All the more reason to make everything from molded plastic as much as possible and, more importantly, to use a design where a small number of parts (say 4) can be used to build a variety of different track widths and configurations. With a slight modification of Garnet's T011 design, such a goal is achievable. If you develop the following parts: - 1 inch long pad - 1.5 inch long pad - simple link - horned link they can be combined to build virtually any tank track configuration used during the last 100 years and could also be used to develop tracks for a wide array of robots. Design a plastic sprocket to mate up with the links and it's a complete system. Best of all, assembly and repair would only require inserting and removing straight pins that either press it into the links or that have slip rings on the ends. In either case, such pins are stock items. And, from a business standpoint, you maximize revenue by producing all the parts yourself. Modular, all-in-one solutions are the goal of all product companies because that's what the market always wants. On 2/10/2015 11:18 AM, Joshua Updyke wrote: > I am looking at being able to make these in small batches myself, but > mostly at trying to make them in bulk and sell to hobbyists. -- -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout. -- -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
