Help! hot wired rc slope soarer

[badpilot27]

just got the parts to build a hot wire and decided my first project with it would be an rc slope soarer

im going to the outer banks for vacation and hopefully there are some steep enough slopes on the beach for so that I can do some slope soaring

some cfd images so far

decided to have a prandtl bell shaped-ish lift distribution because why not (i kinda just guessed and checked what amount of twist gives a lift distribution similar to the bsld since i have no idea on how to do the proper math)


also just wondering, would 3d printed hot wire templates work? the most heat resistant filament I have is some bambu lab petg hf and im not too certain it wont melt when I pass the hot wire over it.

 

[Tench745]

Regarding 3D printed hot wire templates, I wouldn't trust them by themselves. If your wire is too hot and you pause on the template for a second, you very well might melt into it. If you add some aluminum tape to the edges, however, that should protect the template enough to be usable.

 

[Zoom Master]

just got the parts to build a hot wire and decided my first project with it would be an rc slope soarer

im going to the outer banks for vacation and hopefully there are some steep enough slopes on the beach for so that I can do some slope soaring

some cfd images so far

View attachment 251694 View attachment 251695

decided to have a prandtl bell shaped-ish lift distribution because why not (i kinda just guessed and checked what amount of twist gives a lift distribution similar to the bsld since i have no idea on how to do the proper math)


also just wondering, would 3d printed hot wire templates work? the most heat resistant filament I have is some bambu lab petg hf and im not too certain it wont melt when I pass the hot wire over it.

Looks good.

 

[badpilot27]

i finished building the hot wire and the wire is barely getting hot. the hot wire is about 4.5 feet long and im using 32 gauge nichrome wire powered by the same 15v 6a power supply from my b6 lipo charger. i'm not sure what to do to get it to heat up so I would really appreciate some suggestions.

 

[HVB79]

i finished building the hot wire and the wire is barely getting hot. the hot wire is about 4.5 feet long and im using 32 gauge nichrome wire powered by the same 15v 6a power supply from my b6 lipo charger. i'm not sure what to do to get it to heat up so I would really appreciate some suggestions.

If you are not getting enough heat the solution is to add more power or reduce the length of the hot wire.

 

[Merv]

...i'm not sure what to do to get it to heat up so I would really appreciate some suggestions.

You need more power.
Here is a calculator to get you in the right ballpark. https://jacobs-online.biz/calc2.html
Here is more useful information https://jacobs-online.biz/wire-xformer_selection.htm
This guy has a great selection of hotwire components to meet your needs. Spend some time exploring his site.