Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Lycoming R-680  
User currently offlineL-188 From United States of America, joined Jul 1999, 30414 posts, RR: 57
Posted (13 years 11 months 1 week 10 hours ago) and read 4032 times:

Hey guys, in another topic I mentioned that I had found the FAA database for TCDS's on the web and it listed if the certificate was held in the public domain.

Well I was looking at the certificates and was pleasantly surprised to find out that the Stinson SM8A certificate is now a public document.

That aircraft was powered by a Lycoming R680 rated at 215 horsepower. Anybody have any idea as to how common are these engines out on the used market? And if they are rare, anybody have a recommendation for an acceptable modern substitute that may have the potental to be used in it's place?

3 replies: All unread, jump to last
User currently offlineDNL65 From United States of America, joined Jun 2001, 82 posts, RR: 0
Reply 1, posted (13 years 11 months 1 week 5 hours ago) and read 4015 times:


I believe that the R680 was used in some variants of the stearman pt-13/pt-17/NS-2 trainers. If this is correct there should be plenty of cores and spares around take a look in the engine section of trade-a-plane. Also, if you are interested the air and space museum had the original blueprints for the sm8 at one time. Contact the Garber restoration facility in Silver Hill, MD for more information.

User currently offlineFBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 7
Reply 2, posted (13 years 11 months 1 week 4 hours ago) and read 4013 times:

Yes,the R-680 was used in the PT-13 variant of the venerable Stearman,albeit at a 220 HP rating (the R-680-7) or 280 HP (R-680-11).The PT-17 was powered by the 225 HP Continental R-670-5.

"Luck and superstition wins all the time"!
User currently offlineL-188 From United States of America, joined Jul 1999, 30414 posts, RR: 57
Reply 3, posted (13 years 11 months 6 days 20 hours ago) and read 3993 times:


I was hoping for that when I saw that the TC was in the public domain DNL 65.
I hope that they still do.

If they do my plan will become more complete.

Top Of Page
Forum Index

Reply To This Topic Lycoming R-680
No username? Sign up now!

Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)

Similar topics:More similar topics...
Lycoming R-680 posted Mon Jul 1 2002 14:16:25 by L-188

Sponsor Message:
Printer friendly format