Thorp Air Command - T18.net

Supporting Owners, Builders and Pilots of the Thorp T-18 and its variants.
It is currently Fri Nov 16, 2018 8:25 pm

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 25 posts ]  Go to page 1, 2  Next
Author Message
Bill Williams
PostPosted: Mon May 26, 2014 3:50 am 
Sr. Member
Sr. Member

Joined: Thu Oct 22, 2009 6:26 am
Posts: 789
Images: 0
Location: USA
Purchased a few tailwheel parts from Aviation Products Inc. Ojai, CA and they included a catalog which has tailspring shafts listed. The 7/8 x 5/8 could adapt to the Thorp. They are heat treated stainless, $125.00


Top
 Profile Personal album  
 
James Grahn
PostPosted: Mon May 26, 2014 9:18 am 
Hero Member
Hero Member

Joined: Sat Oct 24, 2009 7:16 pm
Posts: 1018
Images: 0
Location: USA
That's what I have on mine. They do not come bent. I bent mine.
What's the consensus in the group....
I can get those springs straight or batch order Trusty ones that need painting but are bent.
What say you?
Cubes


Top
 Profile Personal album  
 
fytrplt
PostPosted: Mon May 26, 2014 10:52 am 
Sr. Member
Sr. Member
User avatar

Joined: Tue Oct 20, 2009 8:07 pm
Posts: 824
Images: 2
Location: Lakeland, Florida, USA
Can we get more info on the stainless. Mostly interested in the spring rate. Don't need it any more bouncy than the Lange ones. Stainless would go a long way here in Florida. What did it take to bend yours?

_________________
Bob Highley
N711SH
SN 835
KLAL


Top
 Profile Personal album  
 
Rich Brazell
PostPosted: Mon May 26, 2014 6:11 pm 
Hero Member
Hero Member

Joined: Wed Oct 21, 2009 12:33 pm
Posts: 2902
Images: 64
Location: Jamul, CA (San Diego area)
Attachment:
Powder coated tail wheel 002.JPG
Powder coated tail wheel 002.JPG [ 640.23 KiB | Viewed 4831 times ]
Attachment:
Powder coated tail wheel 001.JPG
Powder coated tail wheel 001.JPG [ 629.18 KiB | Viewed 4831 times ]
Got tired of painting mine . Had the spring and fork powder coated . About $75.00 here in SAN .


Top
 Profile Personal album  
 
James Grahn
PostPosted: Tue May 27, 2014 9:07 am 
Hero Member
Hero Member

Joined: Sat Oct 24, 2009 7:16 pm
Posts: 1018
Images: 0
Location: USA
It wasn't hard to bend. I used three blocks and a vice. Also, we could look at a different mount that would include the bend. I'll see what I can drum up on spring rate.
Cubes


Top
 Profile Personal album  
 
Jim Mantyla
PostPosted: Tue May 27, 2014 2:10 pm 
Sr. Member
Sr. Member

Joined: Wed Oct 21, 2009 6:57 pm
Posts: 179
Location: Barrie, Ontario,Canada
Guys,

The Trusty spring is 1" diameter at the fat end and tapers down to 5/8". Changing to a spring that is 7/8" at the fat end and tapering to the standard 5/8" will not be as stiff as the Trusty spring. The question about this is, "is it stiff enough"? I really like my Trusty spring and the hole was exactly perpendicular to the bend, which made installation a breeze.

Jim


Top
 Profile  
 
James Grahn
PostPosted: Wed May 28, 2014 10:17 am 
Hero Member
Hero Member

Joined: Sat Oct 24, 2009 7:16 pm
Posts: 1018
Images: 0
Location: USA
Thanks for the input Jim
Cubes


Top
 Profile Personal album  
 
James Grahn
PostPosted: Fri Apr 01, 2016 1:51 am 
Hero Member
Hero Member

Joined: Sat Oct 24, 2009 7:16 pm
Posts: 1018
Images: 0
Location: USA
In case folks have been trying to contact Aviation Products... I talked to Karen today. She has been forced to take another job. She is still in the tail wheel business.. Please let the phone ring a lot, like 15 times, for it to go to voicemail. She will eventually get back to you.
Cubes


Top
 Profile Personal album  
 
BobMoe
PostPosted: Fri Apr 01, 2016 7:13 am 
Full Member
Full Member

Joined: Fri Oct 23, 2009 7:33 pm
Posts: 141
Images: 4
Location: USA-Daytona Beach, FL
Flyboyaccessories.com has RV tailsprings for $95 and many different TW's.
One of our members retro-ed one to fit his T18. I'll look for photo.

BobMO


Top
 Profile Personal album  
 
flyingfool
PostPosted: Mon Apr 04, 2016 11:05 am 
Sr. Member
Sr. Member

Joined: Wed Aug 06, 2014 11:01 am
Posts: 199
Images: 7
Rich,

This is off topic of this thread, but in the pictures above, it looks like you have electric rudder trim.

Do you find rudder trim useful or not worth the effort?


Top
 Profile Personal album  
 
cluttonfred
PostPosted: Mon Apr 04, 2016 11:39 am 
Newbie
Newbie
User avatar

Joined: Thu Mar 17, 2016 4:10 pm
Posts: 35
OK, I'll bite. The original T-18 seems to have had a flat tailwheel spring. Are these rod springs part of the S-18 plans or just a common modification, perhaps to take advantage of ready-made Van's RV parts?

_________________
Matthew Long, Editor
cluttonfred.info
A site for builders, owners and fans of Eric Clutton's FRED

« Voici ce que j'ai fait...vous pouvez en faire autant! »
"This is what I have done...you can do the same!"
--Henri Mignet (1893-1965)


Top
 Profile  
 
Rich Brazell
PostPosted: Mon Apr 04, 2016 1:48 pm 
Hero Member
Hero Member

Joined: Wed Oct 21, 2009 12:33 pm
Posts: 2902
Images: 64
Location: Jamul, CA (San Diego area)
Attachment:
S18%20stick%20boot%20assy%20002.jpg
S18%20stick%20boot%20assy%20002.jpg [ 295.91 KiB | Viewed 4100 times ]
I find the electric trim very useful during cruise especially with the auto pilot on . Anything I can do to reduce fatigue in the cockpit , I'm up for it . During the landing phase I just reset it to the takeoff position . I have a small green LED lite next to the trim switch to indicate the T/O position as can be seen in the attached pic . ???


Top
 Profile Personal album  
 
SHIPCHIEF
PostPosted: Mon Apr 04, 2016 1:59 pm 
Sr. Member
Sr. Member

Joined: Tue Nov 29, 2011 9:05 pm
Posts: 429
Location: USA
I bought a tail wheel assembly from Flyboyaccessories.com. I bought the tail wheel spring thru a group buy here on the T-18 forum.
The socket in the tail wheel assembly was custom bored by Vince, to the T-18 spring spec. His customer service is great as is his product.

_________________
Scott Emery
EAA Chapter 326
T-18 N18TE


Top
 Profile  
 
James Grahn
PostPosted: Mon Apr 04, 2016 4:17 pm 
Hero Member
Hero Member

Joined: Sat Oct 24, 2009 7:16 pm
Posts: 1018
Images: 0
Location: USA
The tapered rod tail spring was designed by Lyle Trusty for the T18. It lowers the tail and extends the moment arm. It is not according to plans, but I have LTs original plans to modify the bird. The RV guys picked up on the idea and LT started selling to them.
I have collars made for both the LT version (which I sell) and the Aviation Products version.
Cubes


Top
 Profile Personal album  
 
cluttonfred
PostPosted: Mon Apr 04, 2016 4:27 pm 
Newbie
Newbie
User avatar

Joined: Thu Mar 17, 2016 4:10 pm
Posts: 35
Thanks! I can understand extending the moment arm to make the steering less twitchy, but what is the advantage to lowering the tail?

_________________
Matthew Long, Editor
cluttonfred.info
A site for builders, owners and fans of Eric Clutton's FRED

« Voici ce que j'ai fait...vous pouvez en faire autant! »
"This is what I have done...you can do the same!"
--Henri Mignet (1893-1965)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 25 posts ]  Go to page 1, 2  Next

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron

[ Time : 0.156s | 12 Queries | GZIP : On ]