This original design abandoned see further down in this thread.
-
CDV777-1
- Registered User
- Posts: 1147
- Joined: Tue Jan 02, 2007 1:49 am
- Real Name: Eric
- YouTube Username: vanamonde2
- Location: Allen Tx
- Contact: Website
Mini Hurricane Progress Updated With Rotor Pics.
Here's some pics of the parts so far. I just made the top of the chopper tube tonight at work. I have about 10-12 hours in it so far.
This original design abandoned see further down in this thread.
This original design abandoned see further down in this thread.
Last edited by CDV777-1 on Tue Jan 01, 2013 9:09 pm, edited 2 times in total.
Proud owner of a garage full of junk.
-
Taterworks
- Registered User
- Posts: 88
- Joined: Fri Feb 18, 2011 11:49 pm
-
CDV777-1
- Registered User
- Posts: 1147
- Joined: Tue Jan 02, 2007 1:49 am
- Real Name: Eric
- YouTube Username: vanamonde2
- Location: Allen Tx
- Contact: Website
Well here are some pics of Rev B of the Mini Hurricane.
I'm having to redo the entire mini-Hurricane chopper because the original wasn't NEARLY loud enough. I took the thing to work several months ago and tried to force a larger volume of air through it and it bogged the chopper motor down BAD. When that happened I knew right away I wasn't going to be able to use the small motor and rotors. That's why I haven't done anything with it in such a long time. Considering the finished size this siren will be, (it's more than twice the size of the mini-thunderbolt) the sound output with the original small rotor chopper wasn't even half of what it should be. I hope to get it as loud as a Model A when it's done. We'll see....
I'm replacing the chopper motor with an RC car motor. Since this isn't a dual shaft motor I'll have to hang the motor off of the bottom of the chopper stator on a bracket and couple the motor shaft to the chopper shaft. The original choppers are a little over an inch in diameter and only have half the number (5/4) of holes needed. Because of that I had to spin them REALLY fast to get the right pitch. The new chopper rotor diameter is 2.1 inches so I'll be able to get all the holes (8/10) needed on the rotors. Also, the holes will now be .5 inch in diameter instead of the .3 inch hole diameter of the small rotors. I have to run a shaft through the chopper housing with the rotors on each end. I'm using a 3/16 precision shaft and two bearings. The shaft will be located by snap rings at the bearings. I finally got the stator turned and the shaft and bearings in from McMaster Carr. I still have to mill the stator, make the rotors, motor bracket, shaft and coupler sleeve before I'm able to make any noise with it.
Here's a pic of the new motor, bearings, shaft and stator next to the old motor, stator and rotors.
New chopper parts.
End view showing the diameter difference in the new stator bore (left) diameter and the old stator bore (right) diameter.
New stator and motor with chopper housing.
I'm having to redo the entire mini-Hurricane chopper because the original wasn't NEARLY loud enough. I took the thing to work several months ago and tried to force a larger volume of air through it and it bogged the chopper motor down BAD. When that happened I knew right away I wasn't going to be able to use the small motor and rotors. That's why I haven't done anything with it in such a long time. Considering the finished size this siren will be, (it's more than twice the size of the mini-thunderbolt) the sound output with the original small rotor chopper wasn't even half of what it should be. I hope to get it as loud as a Model A when it's done. We'll see....
I'm replacing the chopper motor with an RC car motor. Since this isn't a dual shaft motor I'll have to hang the motor off of the bottom of the chopper stator on a bracket and couple the motor shaft to the chopper shaft. The original choppers are a little over an inch in diameter and only have half the number (5/4) of holes needed. Because of that I had to spin them REALLY fast to get the right pitch. The new chopper rotor diameter is 2.1 inches so I'll be able to get all the holes (8/10) needed on the rotors. Also, the holes will now be .5 inch in diameter instead of the .3 inch hole diameter of the small rotors. I have to run a shaft through the chopper housing with the rotors on each end. I'm using a 3/16 precision shaft and two bearings. The shaft will be located by snap rings at the bearings. I finally got the stator turned and the shaft and bearings in from McMaster Carr. I still have to mill the stator, make the rotors, motor bracket, shaft and coupler sleeve before I'm able to make any noise with it.
Here's a pic of the new motor, bearings, shaft and stator next to the old motor, stator and rotors.
New chopper parts.
End view showing the diameter difference in the new stator bore (left) diameter and the old stator bore (right) diameter.
New stator and motor with chopper housing.
Proud owner of a garage full of junk.
-
Crazywarriorman
- Registered User
- Posts: 1351
- Joined: Sat May 09, 2009 7:06 am
- Real Name: Luke
- YouTube Username: crazywarriorman
- Location: Illinois
-
SirenMadness
- Registered User
- Posts: 3751
- Joined: Mon May 15, 2006 2:47 pm
- Location: Windsor, Ontario
- Contact: Website
Return to “Main Outdoor Warning Sirens Board”
Who is online
Users browsing this forum: No registered users and 0 guests