Some of you guys might know the answer to this, and since it's been quiet
I'll throw this out. My flap torque tube is a piece of .75" 4130 steel
tubing that extends from one end of the stub wing to the other, right
through the cockpit, where I have an RV flap motor attached to it by way of
a
I got smart a while back and painted it along with some other stuff, but the
fit was so tight on the holes that there's no way it'll fit back in the same
holes, and enlarging them would be very tough
I suppose worst case is that I figure out a way to open up the holes, so I'm
open to suggestions
Dave McKelvey wrote:
> Mark, I've used alodine (1204 I think, I'll double check). I used it to
> treat some torx bits that started rusting as well as steel hardware, I
don't
> think it's hard to find but I don't remember where I got my bottle. You
do
> want to clean it real well first and it
ating.
So, disclaimer: I have no experience in this area, just a book. "Your
results may vary"
Mark Youkey
myou...@cox.net
Oklahoma City
Subject: Re: KR>chemical corrosion coating for 4130 steel?
> Dave McKelvey wrote:
>
> > Mark, I've used alodine (1204 I think, I'll dou
Mark Youkey wrote:
> I looked in "The Science and Engineering of Materials" and found that
> perhaps the best way is to zinc plate the steel.
Hey, I have that book too! Guess I should have opened it.
Actually, I'm looking for something I can do at home, but I may have to go
that way. I also
Greetings Mark:
This is a little off topic, but could you tell me the weight of the Van Flap
Motor?
Thanks.
Richard Selix
San Diego ,Ca.
Mark Langford wrote:
> Some of you guys might know the answer to this, and since it's been quiet
> I'll throw this out. My flap torque tube is a piece of
Powder coating adds probably a little more than that. I design bridge
consoles for ships and we have to run taps back through all the tapped
holes and make sure none of the clearance holes are too tight.
I use Tool Black from Precision Brand Products in my machine shop for
steel parts. It
Mark,
>From the photo, it's not clear to me where you are mounting the motor end of
the flap actuator. I would suggest that you include a walking beam from the
motor end of the flap actuator to a tab on the bottom of the flap torque
tube. This will resolve the pull or push force on the flap
Bob Lee wrote:
> >From the photo, it's not clear to me where you are mounting the motor end
of
> the flap actuator. I would suggest that you include a walking beam from
the
> motor end of the flap actuator to a tab on the bottom of the flap torque
> tube.
Good point, and I'm sure it would work
aturday, June 28, 2003 9:12 AM
Subject: KR>chemical corrosion coating for 4130 steel?
http://www.krnet.org/instructions.html
-boun...@mylist.net]On
Behalf Of Mark Langford
Sent: Saturday, June 28, 2003 12:49 PM
To: KR builders and pilots
Subject: Re: KR>chemical corrosion coating for 4130 steel?
Dave McKelvey wrote:
> Mark, I've used alodine (1204 I think, I'll double check). I used it to
> treat some
Mark, If you know of a gun shop in your area they may
be able to help you. Some of the larger shops have
bluing or rebluing services. The metal is dipped in
lye at a certain temperature to hot blue it, but some
places have a cold bluing kit. Just a suggestion, Rick
Wilson. rwdw2...@yahoo.com
Use a reamer they come in all sizes!
Mark Langford wrote:
> Some of you guys might know the answer to this, and since it's been quiet
> I'll throw this out. My flap torque tube is a piece of .75" 4130 steel
> tubing that extends from one end of the stub wing to the other, right
> through the
Adrian Carter wrote:
> Use a reamer they come in all sizes!
I'm not so sure they make one 24" long, and even if they did, I'd have to
take out a loan to buy it. And I'd have to buy a huge drill to turn it...
After the Teflon dry film suggestion I tried some Moly dry film that I had
laying
..@mylist.net>
Sent: Saturday, June 28, 2003 10:12 AM
Subject: KR>chemical corrosion coating for 4130 steel?
> Some of you guys might know the answer to this, and since it's been quiet
> I'll throw this out. My flap torque tube is a piece of .75" 4130 steel
> tubing that extends
Hello all,
I'm new to the list. I have silently been following it for months but here I
think I might can contribute.
You don't need to purchase a 24" long reamer. What you can do is purchase a
chucking reamer. I would recommend for this application getting an
expandable type, your tube being .750
Mark,
You could use a self etching wash primer like the PPG DP 701, it's a two
equal part mix. By asking at the local jobber store (Auto Value here) you could
find who is using it locally and get a pint. I think the smallest they sell is
quart and you won't need a half gallon of the stuff.
ts <kr...@mylist.net>
Sent: Saturday, June 28, 2003 11:09 AM
Subject: Re: KR>chemical corrosion coating for 4130 steel?
> Mark Youkey wrote:
>
> > I looked in "The Science and Engineering of Materials" and found that
> > perhaps the best way is to zinc plate the stee
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