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Discussion
Wemo Minifan pro exhaust size.
Can someone confirm for me that the perfect exhaust size for the Wemo minifan (70mm) is 60mm's?
Or is it something else? A search on the boards didn't find it. |
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60mm - 2.375 inch is pretty close to what most of the 70mm arf mfg's have theirs. I think it depends on how slippery your airframe is as to how much you can effectively squeeze out of the efflux. Keep the diameter a fuzz larger for fixed gear
http://www.s4a.ch/eflight/fancalc_e.htm |
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Quote:
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I would do that for sure as I've made many thrust tubes in the past (just not this small) but the fans are already installed and difficult to get out. Plus the jet has thrust vectoring as well so I will have to come up with a different solution. Hmmm you just gave me a good idea...
I will go the 56mm though. |
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Pete is that the thrust vectored Mig29? If so you can still add the thrust cone but the 56mm exhaust should come 2/3rds into the TV ball. If you are going Mini depending on which motor you choose you likely can go down to 54mm.
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Max I went a bit of a different route. I am going with 55mm's and you can see the work done here. I just finished it. I would rather have gone directly from the fan itself but it wasn't possible so I think this solution will be ok.
https://www.rcgroups.com/forums/show...24381&page=130 (Scroll down to the bottom) |
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Simple...I glued the fan covers on as I've heard with the higher power setups in this bird that they will blow off with double sided tape etc. I realized the exit ducting looked incorrect after the fact (DOH). I could get them off again with some work but I didn't really want to do both of them.
So that was my solution. If I hadn't glued them on first then your idea would have been what I would do. Quote:
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Wemotecs glass nozzles are 54mm, at least the ones I have are, calculate it out to 80% comes out to 54-55mm so you dont really want to go smaller than 54.
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