Go Back  RCU Forums > RC Boats > Speed - RC Nitro Boats
 Props for AQ .18 motor >

Props for AQ .18 motor

Notices
Speed - RC Nitro Boats For all your rc nitro fuel burning boating needs.

Props for AQ .18 motor

Old 06-21-2008, 04:59 AM
  #1  
Senior Member
Thread Starter
 
Join Date: Sep 2007
Location: , CYPRUS
Posts: 2,032
Likes: 0
Received 0 Likes on 0 Posts
Default Props for AQ .18 motor

I am doing a towerhobbies purchase and need to buy some 3/16" props
I don't understand all those numbers and so on so can someone please recommend me the correct props?

The hull/boat is a deep V slightly larger/heavier than an SV27, but uses an SV27 motor and strut

Help is appreciated
Old 06-21-2008, 06:12 AM
  #2  
My Feedback: (1)
 
jetpack's Avatar
 
Join Date: Oct 2002
Location: Hobart, IN
Posts: 2,477
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Props for AQ .18 motor

Check out the general boating column and theres a prop thread right at the top, and you can read up on what would work. There's charts that will help you decide.

I dont run .18 motors but I would guess a 437. 37 is the diameter, 37 millimeters.

I dont usually just tell people where to go to look, I try and give a solid answer, but with props its kind of a different story because really the only person to tell you what prop is exactly right all depends on the boat and the driver when your out driving it. Lots of variables in a boat to tell exactly which one is right, but there is a starting size. Thats one of the reasons there's so many of them, and why your overwhelmed by it.

I would try and measure what diameter came with it and try and match it and see if you need to go up or down with the pitch size first. Dont be concerned with "lifting props" and stay with the "submerged" type for now, thats what most RTR boats are setup to go with.
Old 06-22-2008, 10:09 AM
  #3  
Senior Member
Thread Starter
 
Join Date: Sep 2007
Location: , CYPRUS
Posts: 2,032
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Props for AQ .18 motor

Ok...
So I read up a bit
And it seems a good prop is a Octura 440 and the Prather 215
I noticed Octura has X and M. What's this?

And, does prop size have to be matched to the boat, or the engine??
Old 06-22-2008, 11:08 AM
  #4  
My Feedback: (1)
 
jetpack's Avatar
 
Join Date: Oct 2002
Location: Hobart, IN
Posts: 2,477
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Props for AQ .18 motor

I run a 440 and a 215 on my .21 motor, and they are about the biggest diameter I would want to put on it, so I would go a bit smaller if its an .18.

The letter designation M and X describe the lifting characteristics, or the shape of the blades. It has an effect also. The X is a lifting prop, the M I am not sure of its a new style but I think some of the tounge of the blade is cut out from the X to let the engine get more RPM's.

Would you be able to measure the diameter of the stock prop? The .15 and .18 motors are whats in the Miss Vegas. Maybe check into that to see what props they are using for diameter to start with.

The prop is matched to the motor, and then to a lesser degree to the boat. Too big of prop will lug the motor, too small it will rev out too high.
Old 06-22-2008, 12:27 PM
  #5  
Senior Member
 
Dan S's Avatar
 
Join Date: Aug 2006
Location: Oromocto, NB, CANADA
Posts: 2,882
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Props for AQ .18 motor

Spetz,

here's a link to your question on X an M series for props.

http://www.rcuniverse.com/forum/m_7637375/tm.htm

Dan.
Old 06-22-2008, 03:30 PM
  #6  
Senior Member
Thread Starter
 
Join Date: Sep 2007
Location: , CYPRUS
Posts: 2,032
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Props for AQ .18 motor

I measured the 3 props I have (but I've only ever run them on a .16 Kyosho motor)

The standard one is about 40mm. It worked best but the engine never really revved that hard + overall speed wasn't fast

The other one is a 50mm and with this one the engine couldn't rev at all + slow
And the other one was 38mm and with this the engine revved heaps but went nowhere

I don't know about pitch. THey seem to half roughly a 45 degree angle

Thanks Dan I'll read it up now
Problem is I see props are like $15-$20 minimum so I don't really feel like "testing"
Old 06-22-2008, 03:52 PM
  #7  
Senior Member
 
Dan S's Avatar
 
Join Date: Aug 2006
Location: Oromocto, NB, CANADA
Posts: 2,882
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Props for AQ .18 motor

unfortunately that is part of RC boating, wait until you get into gas boat....props are a lot more expensive.

Dan.
Old 06-22-2008, 04:35 PM
  #8  
Senior Member
Thread Starter
 
Join Date: Sep 2007
Location: , CYPRUS
Posts: 2,032
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Props for AQ .18 motor

Well that's something to look forward to!

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
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences 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.