Canard Community Forum  

Go Back   Canard Community Forum > Firewall Backward and Forward > Propellors
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 06-17-2007, 10:23 PM
rviglierchio rviglierchio is offline
Member
 
Join Date: Apr 2006
Location: Davis, CA
Posts: 72
Exclamation Prop Damage

Just found some gouges in my Catto prop.
Any advice out there for repairs? The 2" gouge is through to the cloth and about 1/4" wide. I've written Craig but he's awfully busy and I'm hoping to fly next weekend.
Thanks,
Dave V.
Attached Thumbnails
Click image for larger version

Name:	DSCF1587.JPG
Views:	98
Size:	421.1 KB
ID:	3778  Click image for larger version

Name:	DSCF1590.JPG
Views:	87
Size:	418.4 KB
ID:	3779  Click image for larger version

Name:	DSCF1592.JPG
Views:	106
Size:	442.1 KB
ID:	3780  
Reply With Quote
  #2  
Old 06-17-2007, 10:46 PM
John Slade's Avatar
John Slade John Slade is offline
Flying TurboRotaryCozyIV
 
Join Date: Apr 2004
Location: KWST
Posts: 3,836
Default Re: Prop Damage

Obviously Craig is the best person to answer this one, but....

I'd sand the surrounding glass 1", fill with flox and add a 2 BID patch. Cover with plastic and squeegee air out. After cure sand smooth, micro, finish and paint. See how it feels on a runup. It might be slightly out of balance, but should be structurally ok.

Hopefully you'll get other opinions....
Reply With Quote
  #3  
Old 06-18-2007, 12:22 AM
Steve parkins's Avatar
Steve parkins Steve parkins is offline
Member
 
Join Date: Apr 2004
Location: wa state
Posts: 2,163
Default Re: Prop Damage

I'd sand , fill, but at one uni s glass then mico then balance it
if you make two plates (like the hub) then use small bearings from moms VCR, you can do a grate job with the balance.
if it feels good before balance, I'd still feel better checking the balance
plus you can keep the set up for the next chip

s glass is 150 % of e glass so you can get away with only one layer
__________________
edited by steve for a good reason
Reply With Quote
  #4  
Old 06-18-2007, 09:33 AM
Dennis Passey's Avatar
Dennis Passey Dennis Passey is offline
MarkIV N513DP Cozy540Xtra
 
Join Date: Mar 2005
Location: Monterey, Calif
Posts: 783
Default Re: Prop Damage

At least its not further out towards the tip where the grams/ounces are additionally moe 'balance' critical.

I think its your judgment call as to what to insert as weight/filler. But personally, I would go with the two thinner glass layers, as you would bite/attach twice by offsetting the edge of the top ply a smidge wider than the second layer. Then add the eggs, butter, and saute, carefully adding the creamed scallions you have previously prepared.

Butt what do I know- I'm just trying to build one of these here rascal air-e-oplanes myself!
There some 'finished' builders here who have it really figured out. Chime in.

Speaking of 'finish'..From your photo, I was admiring how slick and smooth your planes finish is...
Very nice Mr Rvig...very nice indeed!
__________________
Build the dream, Fly the dream.
Reply With Quote
  #5  
Old 06-18-2007, 10:30 AM
Waiter's Avatar
Waiter Waiter is offline
LongEZ-RG
 
Join Date: Dec 2004
Location: Northwestern Ohio
Posts: 1,096
Default Re: Prop Damage

Get a tube of 4 minute JB weld.

fill it in. after cure, sand level with surrounding area. use white findernail polish to paint.

Waiter
__________________
F16 performance on a Piper Cub budget
LongEZ, 160hp, MT CS Prop, Downdraft cooling, Full retract
visit: www.iflyez.com
Reply With Quote
  #6  
Old 06-18-2007, 11:42 AM
rviglierchio rviglierchio is offline
Member
 
Join Date: Apr 2006
Location: Davis, CA
Posts: 72
Default Re: Prop Damage

Thanks all! Craig got back to me already. Epoxy and flox and I'm good to go. Sure hate to booger up such a nicely finished prop but then that's already been done.
Am real curious what caused it. No screws missing - now to dig under the cowls.....
Thanks again for the input.
DV

PS: Dennis, thanks for the compliments, that's just the finish on my cowlings and one wheel pant that I have been practicing on, the rest is not so nice....
Reply With Quote
  #7  
Old 06-18-2007, 03:02 PM
Wayne Hicks Wayne Hicks is offline
Member
 
Join Date: May 2004
Location: Carrollton, VA
Posts: 1,376
Default Re: Prop Damage

From the picture, it looks like the ding is line with the exhaust pipes. I'd start there.
__________________
=============
Wayne Hicks, Cozy Plans #678
http://www.maddyhome.com/canardpages...cks/index.html
Reply With Quote
  #8  
Old 06-18-2007, 03:59 PM
John Slade's Avatar
John Slade John Slade is offline
Flying TurboRotaryCozyIV
 
Join Date: Apr 2004
Location: KWST
Posts: 3,836
Default Re: Prop Damage

Quote:
looks like the ding is line with the exhaust pipes.
Have you counted your exhaust valves lately?
Reply With Quote
  #9  
Old 06-19-2007, 12:24 AM
Lynn Erickson Lynn Erickson is offline
EVOLUTION EZE
 
Join Date: Nov 2005
Location: Chino, CA
Posts: 535
Default Re: Prop Damage

Quote:
Originally Posted by John Slade View Post
Have you counted your exhaust valves lately?
Looks like more than a screw . check the exhaust pipe band that holds the two pipes together, they are allways breaking off on that type of exhaust
__________________
This is my opinion of these facts and only my opinion, your opinion may vary

Lynn Erickson A&P for lets say almost 30 years
Much better with a Dremel than a computer.
What if they gave me choice between a fast computer or a fast plane?
Reply With Quote
  #10  
Old 06-19-2007, 06:13 AM
Waiter's Avatar
Waiter Waiter is offline
LongEZ-RG
 
Join Date: Dec 2004
Location: Northwestern Ohio
Posts: 1,096
Default Re: Prop Damage

Quote:
Looks like more than a screw . check the exhaust pipe band that holds the two pipes together, they are allways breaking off on that type of exhaust
After one prop strike, I took them off completely. I then welded a tab on each pipe, similar to the ones that secure the pipes to the cylinder.

One spring on each side of the pipes hold them securely together.

Waiter
__________________
F16 performance on a Piper Cub budget
LongEZ, 160hp, MT CS Prop, Downdraft cooling, Full retract
visit: www.iflyez.com
Reply With Quote
  #11  
Old 06-19-2007, 10:08 AM
rviglierchio rviglierchio is offline
Member
 
Join Date: Apr 2006
Location: Davis, CA
Posts: 72
Default Re: Prop Damage

Will be home tonight and hope to have some hangar time to check things out. It does seem more than a screw and less than an exhaust valve.....
Waiter, any pictures on your site of the exhaust attachment? I need to move the ends on that side about 1/2" to get the lower pipe off of the cowling. It burned through once and I redid that area. It's already burning off the Fireshield that I replace each time I pull the cowlings. Can that much bending/adjustment of the pipes be done on the engine with a big pipe for leverage or do they need to be done in a shop by a pro?
Reply With Quote
  #12  
Old 06-19-2007, 11:58 AM
Lynn Erickson Lynn Erickson is offline
EVOLUTION EZE
 
Join Date: Nov 2005
Location: Chino, CA
Posts: 535
Default Re: Prop Damage

Quote:
Originally Posted by rviglierchio View Post
Will be home tonight and hope to have some hangar time to check things out. It does seem more than a screw and less than an exhaust valve.....
Waiter, any pictures on your site of the exhaust attachment? I need to move the ends on that side about 1/2" to get the lower pipe off of the cowling. It burned through once and I redid that area. It's already burning off the Fireshield that I replace each time I pull the cowlings. Can that much bending/adjustment of the pipes be done on the engine with a big pipe for leverage or do they need to be done in a shop by a pro?
bending the pipe with out damaging is very hard to do. they dent very easy. if you want to try the best way is to get a 1 1/4" steal pipe rapped with aluminum tape to get a snug fit and insert it inside the exhaust tubing as far as you can. then do one pipe at a time.
__________________
This is my opinion of these facts and only my opinion, your opinion may vary

Lynn Erickson A&P for lets say almost 30 years
Much better with a Dremel than a computer.
What if they gave me choice between a fast computer or a fast plane?
Reply With Quote
  #13  
Old 06-22-2007, 08:38 PM
rviglierchio rviglierchio is offline
Member
 
Join Date: Apr 2006
Location: Davis, CA
Posts: 72
Thumbs up Re: Prop Damage

Well, nothing missing from under the cowlings. And the pipes and clamps are all still there. Just how do these Lycomings run with a missing exhaust valve.....
Craig says to fill it with flox and paint, easy for him to say. Much like Waiter suggested. Now I'm worried about why Waiter knows so much about nail polish...
I'll look for white, and/or try a friends airbrush with my PPG white that I think is the same paint Craig uses. Will also try your pipe trick Lynn, I need to get just a 1/4" or so to stop burning my heatshield material.
Thanks all for good ideas and the expected ribbing....
Dave
Reply With Quote
  #14  
Old 06-22-2007, 08:56 PM
Waiter's Avatar
Waiter Waiter is offline
LongEZ-RG
 
Join Date: Dec 2004
Location: Northwestern Ohio
Posts: 1,096
Default Re: Prop Damage

Quote:
Now I'm worried about why Waiter knows so much about nail polish
I didn't mention that I live south of San Francisco for about 20 years.

Seriously, fingernail polish is great for doing those small paint repairs. It dries fast, reasonably hard, and you can find colors to match just about anything.

I've painted many a prop dings using this technique.

Oh yah, if you ever loose a valve, you'll know immediately. The plane will shake so bad you think the engine is coming off the mount.

Waiter
__________________
F16 performance on a Piper Cub budget
LongEZ, 160hp, MT CS Prop, Downdraft cooling, Full retract
visit: www.iflyez.com
Reply With Quote
  #15  
Old 06-22-2007, 08:56 PM
TMann's Avatar
TMann TMann is offline
Got Foam?
 
Join Date: Mar 2007
Location: Omaha, NE
Posts: 756
Default Re: Prop Damage

Quote:
Originally Posted by rviglierchio View Post
Well, nothing missing from under the cowlings.
No chance you are missing a small wrench or a socket?
It's been known to happen.
__________________
T Mann - Loooong-EZ/20B Infinity R/G Chpt 10 N200LZ
Got Foam?
Mann's Airplane Factory
We add rocket's to everything!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 01:23 PM.


Powered by vBulletin® Version 3.6.7
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.