HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Aug 27, 2014, 06:50 PM
Dieselized User
gkamysz's Avatar
Chicagoland
Joined Feb 2000
7,415 Posts
I just use a press to push the rocker shaft out of these old FS-40 or FS-61. The same rod is used in FS-40, FS-40S, FS-48S, and FS-52S. The only difference between the wrist pins of the original FS-40 and FS-40S is the length, the brass pads had a thinner head so the newer wrist pin with plastic pads is a bit shorter. With enough heat the wrist pin will usually come out. I've serviced many that were tough to remove, but only gave up and cut one rod.

Enough heat (350 oven) will usually get the cam bearing out, but I made a puller. It should be noted that they rarely need to be replaced because they almost never corrode being made of stainless steel.

Greg
gkamysz is offline Find More Posts by gkamysz
Reply With Quote
Sign up now
to remove ads between posts
Old Aug 27, 2014, 09:29 PM
Lookin' up at the centerline
taildragger1589's Avatar
Lawrenceville, Georgia
Joined Feb 2005
2,433 Posts
Quote:
Originally Posted by gkamysz View Post
With enough heat the wrist pin will usually come out. I've serviced many that were tough to remove, but only gave up and cut one rod.
Unfortunately this one was ridden hard and put up wet. (in 1991)
Then left to cure in a hot attic.

I probably would have kept trying had I not gotten a chance at a new first release fs-40 complete with rocker pin thru the head.

I'll still post a vid to this thread when she flies.

Nick
taildragger1589 is offline Find More Posts by taildragger1589
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted OS FS-60 Open-Rocker 4-Stroke Engine Joe Pierson Aircraft - Fuel - Engines and Accessories (FS/W) 1 Jul 18, 2014 08:08 PM
Sold OS FS-90 rear rocker dmrcflyr2 Aircraft - Fuel - Engines and Accessories (FS/W) 4 Jan 15, 2014 08:49 AM
Sold 1976 OS max FS-60 four cycle Open Rocker engine MINT in box King of Plane Aircraft - Fuel - Engines and Accessories (FS/W) 5 Jan 07, 2014 04:14 PM
Wanted Need OS FS-120 (original) intake pipe and prop washer bigrion Aircraft - Fuel - Engines and Accessories (FS/W) 3 Oct 21, 2013 09:46 PM
Sold OS Max 60 FS Four Stroke Open Rocker Model Airplane Engine LCS Aircraft - Fuel - Engines and Accessories (FS/W) 1 Jun 04, 2013 02:02 AM