HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old May 27, 2009, 09:35 AM
Registered User
United States, PA, Pittsburgh
Joined Aug 2006
140 Posts
Discussion
Alfa fan and 5 bladed rotor blade stretch....

Hi everybody! Just wondering if it's normal for the blades to stretch on the Alfa 5 blade rotor at 3/4 to full throttle and wear down on the fan case.. I'm running the jetscreamers little scremaer motor, 25 amp ESC and 2100 MAH 15c Lipo... this thing really screams!!! The wearing of the blade tip has caused a little bigger gap at lower speeds ... I know that real jet engines the compressor and turbine blades... even the 1st compressor fan blades.. will stretch a little... and rub .. just wondering if this is ok or is this not right .. maybe a bad fan rotor?? It is the blue Alfa 5 blader... thanks for looking!!
poochies is offline Find More Posts by poochies
Reply With Quote
Sign up now
to remove ads between posts
Old May 27, 2009, 04:50 PM
WARP SPEED SCOTTY!
skewba98z28's Avatar
Bowling Green Ky
Joined May 2008
68 Posts
It's normal for the fan to stretch. Best thing is to sand the inside of the fan housing to give it clearance.
skewba98z28 is offline Find More Posts by skewba98z28
Reply With Quote
Old May 27, 2009, 05:55 PM
Suspended Account
lavochkin's Avatar
Mokena,Illinois -United States
Joined Oct 2006
5,826 Posts
Its fine. Wear it in by using various power settings. If you want real power use it with a 30c 2200mah 4s pack and a 40-45 amp esc. It really goes on that setup well. It is one of the best setups for the alpha fan. If you go to 4s you will need to break in the fan again with those lipos. You will be in the 500 watt range give or take.
lavochkin is offline Find More Posts by lavochkin
Reply With Quote
Old May 27, 2009, 06:10 PM
Registered User
United States, PA, Pittsburgh
Joined Aug 2006
140 Posts
Thanks guys I'll break it in real good flying my alfa scooter at higher speeds now!!
poochies is offline Find More Posts by poochies
Reply With Quote
Old May 27, 2009, 10:34 PM
WARP SPEED SCOTTY!
skewba98z28's Avatar
Bowling Green Ky
Joined May 2008
68 Posts
I'm running dons wicked 4800 5-blade fan and a 4s zippy R 2000 and a 4s TP Extreme 2200 and i'm at 45amp constant and around 650Watts per my e-logger. When I punch it from no throttle she's at 60amp or higher and the high 700 watts. Best speed i've got out of it so far is 105mph, but I believe it's got alittle more in it. This setup really moves the A4. Can't wait to get my mig done with the same setup.
skewba98z28 is offline Find More Posts by skewba98z28
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted Wanted: Alfa fan 5 blade rotor Ken Lapointe Aircraft - Electric - Jets (FS/W) 3 Nov 16, 2008 02:25 PM
Found Alfa Fan w/5-Blade rotor xwingnut Aircraft - Electric - Jets (FS/W) 3 Oct 21, 2008 01:07 PM
Sold NIB ALFA A-4 with 3mm adapter and 5 bladed rotor phoneguy Aircraft - Electric - Jets (FS/W) 5 Nov 26, 2007 01:29 PM
New Product Aluminum Alfa Fan Rotor Plug for 3 and 5 blade Alfa Fans The Don Product Announcements 4 Nov 08, 2007 12:43 AM
Sold Alfa EDF 60/15 Mk.2 Fan w/5 blade rotor hole digger Aircraft - Electric - Power Systems (FS/W) 2 Aug 12, 2007 08:26 PM