Brodak 40 Props

LAST EDITED ON Aug-20-03 AT 01:47 PM (CDT)
 
While I am more than satisfied with the performance I am getting out of the APC 10.5 X 4.5 on the Brodak 40 in my Omnium I have a slight problem with my ARF Nobler. It uses a 1 3/4 inch spinner and except for the heavy aluminum Great Planes I can't find a spinner that I can cut out enough to clear the hub on the APC prop. If I use the GP spinner with this APC prop I will have to add tail weight

What props are being used with the B-40 on 40+ ounce stunt ships that are working for you?

Bob: you've seen mine, but I use a 10x5 apc prop. I really had to cut away at the plastic spinner to make it work.

Have you tried a SIG plastic spinner? They have very large cutouts with APC props in mind.

Not much SIG stuff in the local hobby shops, I have a plastic spinner I can make work but thought this might be a good chance to see what props others are running on the B-40 before I started hacking on the spinner.

I am running a thinned down Zinger 11-5. Seems to work well. Still had to cut a lot out of my Dubro spinner.

>Not much SIG stuff in the local hobby shops, I have a
>plastic spinner I can make work but thought this might be a
>good chance to see what props others are running on the B-40
>before I started hacking on the spinner.

Bob,
I'm using an APC 11 x 4 prop on my Jamison Special at 32 oz.

Question:

What dealers have Brodak .40's in stock at the present time (August 19, 2003)? .......TD

You should check with our forum host(Leonard)Last I had read was he had a few in stock.
Steve C.

I used a B-Y&O 11-5. This makes the Nobler just a tad tail heavy, which was no problem until it came time to land. Then it likes to float and stall. Got to grease it in.

The latest Oriental, my 4th, put in it's maiden flights this past weekend. Power was a B 40 with the ever present APC 10-5. The airplane is not light at 41-42 oz but seems to have tons of power. Still needs much more trimming of course but should eventually fly pretty well. Noticed both an increase in power and fuel consumption going to Powermaster 10/22 with the routine perfect runs one comes to expect with this engine.

Bob: I assume the 10.5X4.5 APC is an 11.5 cut down?

Nope, not cut down. It's a stock size, but you'll probably only get it direct from APC. Also supposed to work on Fox .35 Stunts. Direct from APC is not a bad way to buy props. Their prices are only pennies more than the mailorder joints, and they have dozens of useful sizes that you won't find elsewhere. Quick, too. Steve

http://www.apcprop.com/html/prop_list.htm
See PN #LP10545 10.5X4.5 .40 FREE FLIGHT $3.95

LAST EDITED ON Aug-21-03 AT 06:01 AM (CDT)
 
Actually the two hobby shops here in Tulsa stock it, seems as though the RCers use them. They also stock the 12.25 x 3.75 that works so well with the LA 46. Guess I will stick with what I know works and hog the plastic spinner out.

One thing about APC props and plastic spinners. If you look at the back of an APC you will see the inside ring of the hub is lower than the outside of the hub. When tightening the prop with a plastic spinner this can distort the plastic back plate and the cone won't fit correctly. I made a T- nut holder for my small mill using a 6mm metric Allen head bolt with the head turned down to fit the hole through the prop. I bolt the prop to the mill table and just mill the back of the prop to the same height as the center ring. Solves the problem and you aren't removing enough material to weaken the prop.