Go Back  RCU Forums > RC Airplanes > IMAC
Reload this Page >

O.S. 1.60 prop

Notices
IMAC Discuss IMAC style aerobatics in here

O.S. 1.60 prop

Old 04-28-2003, 12:36 AM
  #1  
baronbrian
Thread Starter
My Feedback: (13)
 
baronbrian's Avatar
 
Join Date: Nov 2002
Location: Grand Forks, ND
Posts: 890
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

Well I had a rare engine failure yesterday, The CRANKPIN broke of the crankshaft on my Moki 1.35. I put a 1.60 in its place, But I don't know of what prop to use.
Any starting points for Imac flying? The plane is a Sig Cap that weighs 11.5 lbs. Also, expected RPM's would be great.
Thanks,
Old 04-28-2003, 12:46 AM
  #2  
Pugsley-RCU
Senior Member
My Feedback: (15)
 
Join Date: Dec 2001
Location: Kennesaw, GA
Posts: 1,087
Likes: 0
Received 0 Likes on 0 Posts
Default I like the...

Pro Zinger 18x6.....more for 3 D work.

I like the Moki and Mez 18x8 for sequence work....

Pugs
Old 04-28-2003, 01:25 AM
  #3  
flyintexan
My Feedback: (1)
 
flyintexan's Avatar
 
Join Date: Apr 2003
Location: tomball, TX
Posts: 1,207
Received 2 Likes on 1 Post
Default O.S. 1.60 prop

I use a pro-zinger 18x8 with a kline regulator (put my tank on the cg). It works great on my Sig extra at 13.2lbs.
Old 04-28-2003, 01:49 AM
  #4  
baronbrian
Thread Starter
My Feedback: (13)
 
baronbrian's Avatar
 
Join Date: Nov 2002
Location: Grand Forks, ND
Posts: 890
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

Same prop for APC? Thier 18" and up looks funny, why
Old 04-28-2003, 07:12 AM
  #5  
wvr
Senior Member
 
wvr's Avatar
 
Join Date: Nov 2002
Location: Haarlem, AK, NETHERLANDS
Posts: 188
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

I use a 18x10/17x12 APC for Pattern,
with a Krumsheid pipe i get 7800 rpm.

The 18x10 has got some more pull at low speed, the 17x12 is for pattern the best, because it keeps the plane going.
Old 04-28-2003, 11:24 AM
  #6  
RickP
My Feedback: (2)
 
RickP's Avatar
 
Join Date: Jan 2002
Location: Levittown, NY
Posts: 2,012
Received 8 Likes on 6 Posts
Default O.S. 1.60 prop

18-8 is the largest, or I'd start seeing it overheat. I settled with the Pro Zinger 18-6. There is more RPM's with that prop, but I find myself bouncing back and forth. I have those motors on two of my planes, GP-202 and Edge.
RickP
BTW - I love them
Old 04-29-2003, 03:08 AM
  #7  
LuvBipes
My Feedback: (4)
 
LuvBipes's Avatar
 
Join Date: Dec 2001
Location: Miami Beach, FL
Posts: 1,241
Likes: 0
Received 1 Like on 1 Post
Default O.S. 1.60 prop

I Tried a bunch of props and finally settled on the APC 18X8 for the GP Giles 202
Old 05-04-2003, 04:18 AM
  #8  
h82crash
Senior Member
 
h82crash's Avatar
 
Join Date: Mar 2002
Location: ramona, CA
Posts: 841
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

I tried a bunch too and think the Mezjlik 18x8 is the best. Pro Zinger 18x8 turned much faster but didn't have as much thrust. Are you running a pump? 5 of us at the field have pumped 160's and are running the mezjlik and all get a consistant 8500 on the ground. Pro Z 18x8- 9000. Reg Z 18x8- 8000. Large APC's have a smaller area and not as much load on the engine. I don't know why, maybe to make their numbers look good. Anyway, they are more for speed instead of thrust.
Old 05-08-2003, 09:01 PM
  #9  
ofremmi
Senior Member
 
ofremmi's Avatar
 
Join Date: May 2003
Location: Horten, NORWAY
Posts: 111
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

You should try the APC 19x8 W, I have used this with great success on a OS 140RX in a Funtana.
Old 05-08-2003, 11:45 PM
  #10  
h82crash
Senior Member
 
h82crash's Avatar
 
Join Date: Mar 2002
Location: ramona, CA
Posts: 841
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

The W fun fly props are better. The APCs we used were the letter opener blades, yuk.
Old 05-10-2003, 02:01 AM
  #11  
seanychen
Senior Member
My Feedback: (4)
 
seanychen's Avatar
 
Join Date: Jul 2002
Location: Canton, MI
Posts: 2,914
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

Originally posted by h82crash
The W fun fly props are better. The APCs we used were the letter opener blades, yuk.
a.k.a. Ginsu Knife
Old 05-14-2003, 03:28 PM
  #12  
baronbrian
Thread Starter
My Feedback: (13)
 
baronbrian's Avatar
 
Join Date: Nov 2002
Location: Grand Forks, ND
Posts: 890
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

How about the APC 18x6W ? Is it to little prop? It also has the Profile similar to the 17x6 and 17x8 APC (those are the props that I ran on my moki 1.35 before it broke)

Could you guys give some expected RPM's with these props? I am going to break it in on Saturday, There is a fly in on Sunday.

Thanks Again,
Old 05-14-2003, 03:41 PM
  #13  
seanychen
Senior Member
My Feedback: (4)
 
seanychen's Avatar
 
Join Date: Jul 2002
Location: Canton, MI
Posts: 2,914
Likes: 0
Received 0 Likes on 0 Posts
Default O.S. 1.60 prop

I got 9100 on 18x6W, but the spool up was interesting

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.