Starting Wand Mod for Duct. Fan.
#1
Thread Starter
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Starting Wand Mod for Duct. Fan.
O.K. I can't be the first to do this, but I thought I'd actually start a ducted fan with it before I posted the pictures here. I never heard of it, so maybe another newcomer could benefit also. If there's some unseen problem with it, please let me know, but it work like a charm so far today.
I bought a Century (or Miniature Airccraft-I can't remember) helicaopter one-way starting probe and drilled it out slightly to fit a BVM starter wand. I drilled the one-way adapter out to .280" so that I could tap in a section of the brass tube from the BVM wand. The brass tube had a little window cut out to allow the setscrew from the one-way to set on the BVM wand. Also had to nip off about 1/4" of the BVM wand off so that it would bottom out in the one-way adapter. Tap in the brass first (carefully) and the BVM probe slides in snug and true. Tried it out and it worked great-first time, started the ducted fan by myself. It was actually easier than with two people and trying to keep things in line while pushing... The shaft on the bottom is the helicopter part I removed.
I bought a Century (or Miniature Airccraft-I can't remember) helicaopter one-way starting probe and drilled it out slightly to fit a BVM starter wand. I drilled the one-way adapter out to .280" so that I could tap in a section of the brass tube from the BVM wand. The brass tube had a little window cut out to allow the setscrew from the one-way to set on the BVM wand. Also had to nip off about 1/4" of the BVM wand off so that it would bottom out in the one-way adapter. Tap in the brass first (carefully) and the BVM probe slides in snug and true. Tried it out and it worked great-first time, started the ducted fan by myself. It was actually easier than with two people and trying to keep things in line while pushing... The shaft on the bottom is the helicopter part I removed.
#5
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My Feedback: (24)
This is it
This is the product, but I bought it from a LHS, actually for less (Absolute Helis in Houston). Looks like the fixed type on the web page does not include the one-way bearing-I guess the one-way for that application is in the helicopter??? All I know is that I could easily start my jet by myself now...no more cramming the starter on that probe while someone else tries to hold it!
www.centuryheli.com/products/flyfield/index.html
www.centuryheli.com/products/flyfield/index.html
#7
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Join Date: Jan 2002
Location: Va Beach,
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Starting Wand Mod for Duct. Fan.
My old byron starting wand had kinda the same setup with the one way bearing. Very cool how you adapted that to your starter probe I bet you will save some of wear on the spinner bolt!
BRG
Joey
BRG
Joey