Power Systems Talk about motors, ESC speed controllers, gear drives, propellers, power system simulators and all power system related topics

8x8E propeller sources?

Old 06-12-2008, 05:49 PM
  #1  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default 8x8E propeller sources?

Hey guys -- I'm a big fan of the APC 8x8E props -- they work REALLY well with my GWS warbirds and my power system of choice...

However, I seem to break the APC 8x8E props quite often -- sometimes I only get ONE LANDING... :o

So, my question is, what other propeller manufacturers sell an 8x8 prop? I'd like to find something that's a little more flexable on belly landings...

I've ordered some 8x6E Hobby City APC-clones, and they're just a little more flexible than a true APC prop -- but they don't seem to make an 8x8E prop...
Lieutenant Loughead is offline  
Old 06-12-2008, 08:41 PM
  #2  
gfdengine204
Super Contributor
 
gfdengine204's Avatar
 
Join Date: May 2007
Location: Sandwich, IL
Posts: 9,565
Default

Guy,

What about cutting down a 10X8 to 8X8, and balancing it? I've read where some folks have done that with good results.
gfdengine204 is offline  
Old 06-13-2008, 04:38 AM
  #3  
CHELLIE
Super Contributor
 
CHELLIE's Avatar
 
Join Date: Oct 2006
Location: Hesperia, So. Calif
Posts: 19,269
Default

Here you Go for props, Maybe a prop saver might help, Take care, Chellie

http://www.allerc.com/index.php?cPat...t_order&page=2

http://www.allerc.com/index.php?cPath=36_61
CHELLIE is offline  
Old 06-13-2008, 04:12 PM
  #4  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

Thanks guys.

Yeah, I've thought of cutting down a larger diameter prop, but that sounds like a lot of work (and I'd probably end up with a balance issue)...

Unfortunately, I can't use a prop saver -- the airplane uses a spinner... Besides, I have not had good luck with prop savers and the RPMs I'm talking about... :o

What I'm really looking for, is an 8x8 prop that is NOT made by APC.
Lieutenant Loughead is offline  
Old 06-13-2008, 05:47 PM
  #5  
foo
Member
 
Join Date: Jun 2007
Location: monroe,la
Posts: 49
Default

Try a 8/8 glo prop,I have 3 eletrostreaks that I use tornado nylon 8/8 props on running between 300/400 watts in.They go lke stink.
foo is offline  
Old 06-13-2008, 06:20 PM
  #6  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

Originally Posted by foo View Post
Try a 8/8 glo prop,I have 3 eletrostreaks that I use tornado nylon 8/8 props on running between 300/400 watts in.They go lke stink.
Cool -- where can I buy a Tornado Nylon 8x8 prop? I did a Google search, and couldn't find a source... :o
Lieutenant Loughead is offline  
Old 06-13-2008, 06:48 PM
  #7  
rcers
Super Contributor
 
rcers's Avatar
 
Join Date: Jul 2005
Location: Trophy Club TX
Posts: 6,314
Default

Let me guess you are using the brake function? If so - turn it OFF - let it windmill and it will go to horizontal.

I have had apc-e props last over a year of belling landings!
rcers is offline  
Old 06-13-2008, 08:03 PM
  #8  
foo
Member
 
Join Date: Jun 2007
Location: monroe,la
Posts: 49
Default

Try grish.I'm on dialup so I quit after 15 pages,must be gone.
foo is offline  
Old 06-13-2008, 08:20 PM
  #9  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

Originally Posted by rcers View Post
Let me guess you are using the brake function? If so - turn it OFF - let it windmill and it will go to horizontal.

I have had apc-e props last over a year of belling landings!
Hey Rcers... In the nicest possible way, I need to tell you that you guessed wrong... :o

I haven't had the brake on for the last three years. It's the APC 8x8E prop -- I spoke with a LHS owner today, and he agreed... He's heard lots of similar complaints about the APC 8x8E prop, when used on a belly lander...

Oddly enough, the APC 10x7E and the APC 9x7.5E work just fine on my warbirds... It's just the APC 8x8E that keeps breaking... :o
Lieutenant Loughead is offline  
Old 06-13-2008, 08:22 PM
  #10  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

Originally Posted by foo View Post
Try grish.I'm on dialup so I quit after 15 pages,must be gone.
What's "grish"?
Lieutenant Loughead is offline  
Old 06-14-2008, 09:14 AM
  #11  
hul
Member
 
Join Date: Oct 2005
Posts: 50
Default

I had the same problems with the 8x8.
Depending on the diameter of your spinner you could use an 8x5 folder with a +5 degree yoke. That will give you about 8x7 to 7.5, depending on the size of the yoke, according to Aeronaut: http://www.aero-naut.net/fileadmin/d...eichswerte.xls
(in German and metric)

Hans
hul is offline  
Old 06-14-2008, 09:21 AM
  #12  
CHELLIE
Super Contributor
 
CHELLIE's Avatar
 
Join Date: Oct 2006
Location: Hesperia, So. Calif
Posts: 19,269
Default

this might work for you, i Love master airscrew props, they are a very strong prop,



http://www3.towerhobbies.com/cgi-bin...?&I=LXEBD6&P=7

http://www3.towerhobbies.com/cgi-bin...?&I=LXAPX1&P=7

http://www3.towerhobbies.com/cgi-bin...tric&search=Go
CHELLIE is offline  
Old 06-14-2008, 10:22 AM
  #13  
hul
Member
 
Join Date: Oct 2005
Posts: 50
Default

the bearings and shaft may not like the idea of a very strong prop...

Hans
hul is offline  
Old 06-16-2008, 09:09 PM
  #14  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

I put two flights on my GWS P-51 Mustang on Saturday afternoon -- using the APC 9x7.5E prop -- that's two flights, and no broken props.

I'm telling you -- that APC 8x8E prop is a real performer, but it has structural problems... :o

Originally Posted by hul View Post
the bearings and shaft may not like the idea of a very strong prop...
Agreed -- I used a Master Airscrew 9x7 three-blade prop for my Air Devil P-38, and my GWS Zero... Every belly landing on the P-38, the prop would dig in, and rip the firewall mount out of the airplane...

When the Zero landed, it would almost always "flop" over on it's back (because the prop dug in on landing)... This is simply because the Zero's AUW was something like 12 ounces...

I switched to Master Airscrew's 2-blade props, and had the same trouble.

However, my GWS P-51 and GWS ME-108 are both in the 18-ounce range. As much as I LOVE the Master Airscrew props, I don't feel I can put them on an 18-ounce, belly landing warbird.
Lieutenant Loughead is offline  
Old 06-24-2008, 12:21 AM
  #15  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

Hmmmm -- I found some APC 9x9E props at Tower Hobbies yesterday... I ordered 2 of them to see how they hold up...

I will report back, when I have some data to share.
Lieutenant Loughead is offline  
Old 07-07-2008, 03:25 PM
  #16  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

Hey guys -- I switched my GWS ME-109 from an APC 8x8E prop to an APC 9x9E prop, and have not broken a prop in several belly landings...

I also switched my GWS P-51 from an APC 8x8E prop to an APC 9x7.5E prop, and have not broken a prop in several belly landings...

I'm not sure why, but that APC 8x8E prop just breaks too easily... :o
Lieutenant Loughead is offline  
Old 09-04-2009, 01:43 PM
  #17  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

After breaking APC 8x8E props, APC 9x7.5E props, and APC 9x9E props, I finally decided to buy a package of GWS 10x8HD props, and cut them down to 8x8HD. It's worked out REALLY well, and I have them on all my GWS airplanes now.

The GWS props are a bit flexible, but when you cut them down they become more stiff. Also, I like how the GWS props are black (the APC props are grey) and look awesome with yellow prop tips.

Cutting down the 10x8 props to an 8x8 size was much easier than I expected. I didn't even balance them!
Lieutenant Loughead is offline  
Old 01-14-2010, 02:13 PM
  #18  
PJPHX
New Member
 
PJPHX's Avatar
 
Join Date: Dec 2009
Posts: 12
Default

Originally Posted by Lieutenant Loughead View Post
After breaking APC 8x8E props, APC 9x7.5E props, and APC 9x9E props, I finally decided to buy a package of GWS 10x8HD props, and cut them down to 8x8HD. It's worked out REALLY well, and I have them on all my GWS airplanes now.

The GWS props are a bit flexible, but when you cut them down they become more stiff. Also, I like how the GWS props are black (the APC props are grey) and look awesome with yellow prop tips.

Cutting down the 10x8 props to an 8x8 size was much easier than I expected. I didn't even balance them!

Not balancing a chopped prop can be deadly, vibrations can damage motor ball-bearings in the long run, or vibrations will loosen the motor mount.
reading about all the broken props, what is the advantage of not using any landing gear. My concern is not only that props brake, i see on my Multiplex glider ugly damage on the fuselage, that bothers me way more than any broken cheap prop.
PJPHX is offline  
Old 01-14-2010, 07:33 PM
  #19  
Lieutenant Loughead
UNCLUB OWNER
Thread Starter
 
Lieutenant Loughead's Avatar
 
Join Date: Jul 2007
Location: Oklahoma
Posts: 4,406
Default

Originally Posted by PJPHX View Post
Not balancing a chopped prop can be deadly, vibrations can damage motor ball-bearings in the long run, or vibrations will loosen the motor mount.
Thanks for your post. However, I assure you that there are no vibration problems on these 8x8 props. I have four of them installed on thee different aircraft, and they all work amazingly well. I like them so much, I've considered adding them to my web site -- cut, shaped, and painted with yellow prop tips. Yet, your comment reminds me that someone could try to sue me for a cut-prop-gone-wrong, so I guess I won't add it to my web site after all...

Originally Posted by PJPHX View Post
reading about all the broken props, what is the advantage of not using any landing gear. My concern is not only that props brake, i see on my Multiplex glider ugly damage on the fuselage, that bothers me way more than any broken cheap prop.
The advantage is that you can land in grass, dirt, gravel, snow, ice, or anything else (other than a smooth, long hunk of concrete). My aircraft are fiberglassed, and bell landings don't affect the nice looks of the airplane.

APC props cost about $2.50 each. They're NOT cheap when you break on on every landing (or sometimes every other landing)!
Lieutenant Loughead is offline  
Old 01-14-2010, 11:21 PM
  #20  
crxmanpat
Community Moderator
 
crxmanpat's Avatar
 
Join Date: Feb 2006
Location: Crawfordville, FL
Posts: 6,974
Default

Guy,

Have you tried any of the EMP Scimitar props? Cermark sells an 8X7. I wonder if that would work good?

http://www.cermark.com/products/EMP-...-8x7-prop.html
crxmanpat is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ShokWaveRider
Foamies
2
11-23-2006 06:26 AM
RSS Feed
RCU RSS Feed
0
10-03-2006 11:20 PM
RetroFlight
Electric Ducted Fan Jets
3
04-30-2006 05:46 PM
jonnyjetprop
Batteries & Chargers
14
03-26-2006 10:57 PM
Joe Ortiz
Electric Ducted Fan Jets
19
11-05-2005 01:16 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 On


Quick Reply: 8x8E propeller sources?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.

Page generated in 0.12414 seconds with 13 queries