Landing Products (APC) Props

I recieved an order of 10 APC props ordered from the Landing Products web site today that were completley un-useable.
These props are for 1/2a.
Mounting holes drilled off center and of different sizes on the same size/style prop.
Are they dropping there junk on web sales?
I can't wipe out a case using a off-center prop.
I E-mailed for "Return Authorization", guess I have to see what happends.
Anyone else have problems with these props? They seem to come highly recommended by many on this forum. Did I get a "Bad Batch"?

Thanks,
Rob Johnson
Orange,CA.

Other than being an incovenience, there is no problem. Unless it's you jumping the gun, blabbing to one and all about what must be regarded as a *very* unusual ocurrence.

The APC folk are good folk, ones who most certainly would not sully their reputation by letting product known to be substandard out the door, whether through their web site or other outlets.

Give 'em a chance to prove what I say. And then come back to tell us how it went.

Aha!! That's what I thought when first seeing your name...

You're the guy who flew his Cox Hyper Viper, it was real slow and you still did a loop with it, crashed, and it was all the fault of Cox Manufacturing.

What a whiner...

I have tried to resist responding to Dirty Dan's personal attack, but I cannot.
My posting dealing with the problems I had encountered with my HV were intended to warn others of a potential problem with the fuel tank.
If you were to re-read the post(Found problem on Hyper Viper) you will see that I agreeded, after being chastised by Leonard, that pulling the trigger on a Plane that was not running well was my fault. I never considered asking for warrenty untill it was suggested by another poster (Reply #6, How does it fly?).
I did, and was told to pound sand. I expected to at least get a new fuel tank. That lead to Scott Winans from Cox R&D posting his direct phone number to look into any fuel tank problems. I know of at least one person who called him with a problem, and a couple more that I don't know if they called or not. I also posted that Cox was stepping up to fix any fuel tank problems.
Whiner?
As for APC props, I found them highly recommended on this fourm as the way to go for Cox engines. I ordered two of each size from 5x2 to 6x3. Every one had an off-center hub mounting hole. I thought this a bit odd so I posted my findings and found it's not all that uncommon. I also was told of a way to fix it, which is the best part of this forum, people who know helping people who do not. I have now made a drill guide and will fill and re-drill all my APC props to size.
I know of two HV'S on this forum having fuel foaming problems after using armor-all, both using APC props, could there problem be a off-center hub??
Just me whining again.
I don't know what set you off Dan, but I'm new at this and do the best I can with what I pick-up off this forum and from the very helpfull people of The Knights of the Round Circle.
Forgive me for being a novice and not having the direct connections that you may have. I have to deal with "The System".

>I have tried to resist responding to Dirty Dan's personal
>attack, but I cannot.
>My posting dealing with the problems I had encountered with
>my HV were intended to warn others of a potential problem
>with the fuel tank.
>If you were to re-read the post(Found problem on Hyper
>Viper) you will see that I agreeded, after being chastised
>by Leonard, that pulling the trigger on a Plane that was not
>running well was my fault. I never considered asking for
>warrenty untill it was suggested by another poster (Reply
>#6, How does it fly?).
>I did, and was told to pound sand. I expected to at least
>get a new fuel tank. That lead to Scott Winans from Cox R&D
>posting his direct phone number to look into any fuel tank
>problems. I know of at least one person who called him with
>a problem, and a couple more that I don't know if they
>called or not. I also posted that Cox was stepping up to fix
>any fuel tank problems.
>Whiner?
>As for APC props, I found them highly recommended on this
>fourm as the way to go for Cox engines. I ordered two of
>each size from 5x2 to 6x3. Every one had an off-center hub
>mounting hole. I thought this a bit odd so I posted my
>findings and found it's not all that uncommon. I also was
>told of a way to fix it, which is the best part of this
>forum, people who know helping people who do not. I have now
>made a drill guide and will fill and re-drill all my APC
>props to size.
>I know of two HV'S on this forum having fuel foaming
>problems after using armor-all, both using APC props, could
>there problem be a off-center hub??
>Just me whining again.
>I don't know what set you off Dan, but I'm new at this and
>do the best I can with what I pick-up off this forum and
>from the very helpfull people of The Knights of the Round
>Circle.
>Forgive me for being a novice and not having the direct
>connections that you may have. I have to deal with "The
>System".
>
>Rob Johnson
>Orange,CA.

I also remember that Leonard suggested (I don't think it was chastising) not to attempt
loops or other pattern like stuff when an engine is acting funky.

Some time later Rob posted that he had another try at the Hyper and the engine again went funky and because of Leonard's prior suggestion floating in Rob's brain, Rob held off on doing any loop stuff
until engine ran out of gas. Due to Leonard's pragmatic suggestion and Rob's willingness to try and learn, Rob came out ahead.

Awhile ago, in some faraway place Dirty Dan was photographed with some
jock cup or some device around his lower male anatomy (exhausted liquid release mechanism) and
that started all the hoopin' and hollerin' of laughs, catcalls and whistles.
That was the moment that made Dan famous......famous?

Anyway the point I'm trying to make is you get more with sugar than with lemons.
Leonard's suggestion was pragmatic, Dirty Dan's rant is due to the fact that Dan is
crotchety sometimes hence the CUP.

My own personal experience,
3 weeks ago I ordered from APC 10, 9x4 props and 10, 8 x 4 props.
An extreme amount of flash was on ALL the props. In the past I purchased the same
props @ Hobby People and they were clean, free from flash. I did wonder why the APC folks let my props get shipped without noticing extra flash?

Love

I have yet to ever see a plastic prop of any sort that was "drilled". Unless they have changed things a lot lately, the hole for the crankshaft is part of the mould itself, not put in later.

Taipan props are drilled, and I suspect everyone else's props are as well. I ordered a large number of props directly from them a long time ago, and wanted them to drill the holes undersized because people were complaining that some batches of props, in the past, had oversized holes. No problem, they said.

I also buy my 1/2A props directly from APC, since most places do not carry the 5.5 X 2.5. What size did you get?

All of the APC prop for 1/2A do not fit Norvel or Cox directly. You need to cut about a 1/8" ring from a piece of fuel tubing and insert under the hub on the propeller.

No matter where you buy your propellers, you still need to balance them.

Yes, APC has a process problem. I use 7.8-6s for combat. They really work well, both for Foxes and Nelsons. APC makes excellent props with accurate blades, but the holes are often off center. I sent a dozen of them back to the factory and was sent replacements that were just as bad. For awhile I was drilling them to 3/8", filling the hole with epoxy, and then drilling a 1/4" hole in the epoxy. I made a jig to center the hole. Now I just leave the 3/8" hole unfilled for Nelsons and use an insert for Foxes. There is a molded 3/8" dent in the prop, so you can drill a 3/8" hole that's pretty well centered. The APCs are great props, and still a lot less work than the old woodies, which had to be completely recarved, or than the $30 diamond-in-the-rough units I use for stunt.

Balance them and then run them.

Thanks for the warning. I just went down to get a few 9-4's and checked them over and a few were noticeably off-center.

This is why I try to get my props from the LHS. I can take along one of those hand held balcancers and go through the stock to pick out the best ones.

A few problems have been found:

1. The LHS I frequent are typcially out of the size prop I need NOW.
2. Them safety stickers on the blades throw off the balance, making it hard to check them in the store.

The first thing I do when getting an APC or other composite prop is to remove all the flashing I can then balance. If I was careful at the store my props shouldn't be out of balance by much. A little rework and I'm in business.

Since I've never owned a pitch gauge (despite numerous attempts to order one), I've never attempted to repitch any prop.

>Yes, APC has a process problem. I use 7.8-6s for combat.
>They really work well, both for Foxes and Nelsons. APC
>makes excellent props with accurate blades, but the holes
>are often off center. I sent a dozen of them back to the
>factory and was sent replacements that were just as bad.

Do they refund your postage when you have to send defective props back to them?

I don't remember.