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Unread 01-02-2017, 16:42
Bob Steele's Avatar
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Re: poly cord advice

We bit the bullet a number of years ago and bought a Fenner Belt welding kit.
It is pricey but it has served us well for 10 years....
The mini clamp is pretty nice and even if you just bought that.... and adapted a soldering iron to use it... it might be worth looking at
We have never had a failure of a belt due to the joint. It is also pretty quick to use.

kit
http://www.fennerdrives.com/welding-...w/-Mini-Clamp/

clamp:
http://www.fennerdrives.com/welding-...Welding-Clamp/

Their heating tool
http://www.fennerdrives.com/welding-...Tool-115v-60w/

i am not saying there are not plenty of alternatives to this but for less experienced teams, its good to see that a solution exists from the belt maker. You might look at the mini-clamp and design your own.

If we are ever in an event with you we will have it in our pit.

thanks
good luck on the field
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Unread 01-02-2017, 16:51
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Re: poly cord advice

I am making a tutorial video about this and other stuff tonight.
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Unread 01-02-2017, 17:11
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Re: poly cord advice

My team is also using poly cord for our intake. What we've discovered works best for us is using a heat gun to melt each end, pushing them together, and then rolling it between two pieces of wood to make it flat. It also works best to have flat edges.
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Unread 01-02-2017, 17:15
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Re: poly cord advice

Last year, we used a piece of aluminum angle as a sort of jig and used my SMD rework station with a narrow nozzle to melt the polycord.
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Unread 01-02-2017, 20:12
MrBasse MrBasse is offline
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Re: poly cord advice

We made a jig out of a chunk of 2" diameter aluminum. Drilled a .25" hole through it then cut it in half on the band saw straight down the hole. Heat the cord, stick together in the jig and clamp it. The aluminum does a good job of pulling the heat out of the belt and it cures in under 5 minutes.

Since we made two of those we haven't had a failed belt. Prior to that we had one fail every four or five times. With the two pucks we made, we can weld one and while that cures set the next one up.
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