K&B .61
10-17-2011 | 03:56 PM
#1
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From: Mount Juliet,
TN
K&B .61
I am cleaning a very well used K&B .61 and I cannot get the piston out. I am using the usual method of taking out the sleeve and pulling the conrod back untill it comes off the shaft, but the rod doesn't pull back far enough. Is there some method specific to this engine that I am forgetting?
10-17-2011 | 04:10 PM
#3
RE: K&B .61
You need to remove the wrist pin trough the back after removing the access cap(part #25-6191)
http://www.mecoa.com/kb/61/6550-exp.pdf
Then the piston and sleeve can come out, unless you have a brand new spare don't remove the ring from the piston as it will distord and be ruined, here is how to instal new ring:
http://www.mecoa.com/faq/rings/install/install.htm
http://www.mecoa.com/kb/61/6550-exp.pdf
Then the piston and sleeve can come out, unless you have a brand new spare don't remove the ring from the piston as it will distord and be ruined, here is how to instal new ring:
http://www.mecoa.com/faq/rings/install/install.htm
10-17-2011 | 04:17 PM
#4
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From: Mount Juliet,
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RE: K&B .61
How do I get the pin out, I was recently working on an OS 46LA which has the same kind of pin and it had to be tapped out after the piston is out.
10-17-2011 | 04:34 PM
#8
RE: K&B .61
ORIGINAL: coriolan
You need to remove the wrist pin trough the back after removing the access cap(part #25-6191)
http://www.mecoa.com/kb/61/6550-exp.pdf
Then the piston and sleeve can come out, unless you have a brand new spare don't remove the ring from the piston as it will distord and be ruined, here is how to instal new ring:
http://www.mecoa.com/faq/rings/install/install.htm
You need to remove the wrist pin trough the back after removing the access cap(part #25-6191)
http://www.mecoa.com/kb/61/6550-exp.pdf
Then the piston and sleeve can come out, unless you have a brand new spare don't remove the ring from the piston as it will distord and be ruined, here is how to instal new ring:
http://www.mecoa.com/faq/rings/install/install.htm
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10-17-2011 | 04:57 PM
#10
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From: Mount Juliet,
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RE: K&B .61
What kind of fuel did they use in old engines like these? I recognize the smell of the engine but I can't put my finger on it. It smells like diesel and old heavy motor oil. Anyway I can't find a good screw, maybe I'll heat the engine. I will continue trying tomorrow afternoon.
10-17-2011 | 06:01 PM
#13
RE: K&B .61
ORIGINAL: rem0.061
What kind of fuel did they use in old engines like these? I recognize the smell of the engine but I can't put my finger on it. It smells like diesel and old heavy motor oil. Anyway I can't find a good screw, maybe I'll heat the engine. I will continue trying tomorrow afternoon.
What kind of fuel did they use in old engines like these? I recognize the smell of the engine but I can't put my finger on it. It smells like diesel and old heavy motor oil. Anyway I can't find a good screw, maybe I'll heat the engine. I will continue trying tomorrow afternoon.
http://www.craftsmanshipmuseum.com/lee.htm
10-17-2011 | 06:21 PM
#14
RE: K&B .61
The origins of the K&B 61 ( the Veco 61) was designed in 1965. That's some 46 years ago. The K&B has had a few design changes over the years. Mr. Lee is still active, so you could get the actual designer to answer the question of fuel specifications.
10-17-2011 | 10:00 PM
#15
RE: K&B .61
The wrist pin probably has varnish / gum on it...or maybe rust...that can cause problems when trying to remove the pin.
Soaking with penetrating oil, and some heat can help...and a lot of patience...
(maybe a few carefully chosen *&^%$# words too [:@]
)
Soaking with penetrating oil, and some heat can help...and a lot of patience...
(maybe a few carefully chosen *&^%$# words too [:@] )
10-18-2011 | 03:23 PM
#17
My Feedback: (15)
RE: K&B .61
I use a magnet or a magnatized screwdriver. The OS FS120 is the same way. Autozone usually has a small bucket full of telescopic manets and telescopic adjustable mirrors next to the register/checkout. Both of those tools are a steal @ .99c each and are super handy in the model shop.
10-25-2011 | 06:33 PM
#20
RE: K&B .61
The K&B 61 is still a great engine! When I was discussing its origins, that was only for history. It has stood the test of time IMHO. I am a huge CF Lee fan and I still enjoy using my K&B 61's. They are fantastic power for a 14 oz engine. I hope you enjoy yours as much as I do.
turbo
turbo
10-26-2011 | 03:21 AM
#21
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From: Mount Juliet,
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RE: K&B .61
I will enjoy it after I put $100 of parts in it, because after I took it apart I saw the extent of the damage from a crash that supposedly never happened. I got the engine off of ebay with an intent of getting a good .61 engine for a low price so I could sell a plane RTF. the description was "Good used KB 61 engine good compresson usual signs of wear no damage." The damage resembles a crash with a dented muffler, scratched head, a bent shaft, and a small cracked ASP carb.
10-26-2011 | 05:27 AM
#22
RE: K&B .61
ORIGINAL: rem0.061
I will enjoy it after I put $100 of parts in it, because after I took it apart I saw the extent of the damage from a crash that supposedly never happened. I got the engine off of ebay with an intent of getting a good .61 engine for a low price so I could sell a plane RTF. the description was ''Good used KB 61 engine good compresson usual signs of wear no damage.'' The damage resembles a crash with a dented muffler, scratched head, a bent shaft, and a small cracked ASP carb.
I will enjoy it after I put $100 of parts in it, because after I took it apart I saw the extent of the damage from a crash that supposedly never happened. I got the engine off of ebay with an intent of getting a good .61 engine for a low price so I could sell a plane RTF. the description was ''Good used KB 61 engine good compresson usual signs of wear no damage.'' The damage resembles a crash with a dented muffler, scratched head, a bent shaft, and a small cracked ASP carb.
I would not put another $100 into that engine; good ones are available for less.
If you paid by P**P*l, you may have had recourse. Maybe since you have taken it apart that may not be an option?
I would register a complaint so others may not be similarly burned by this seller.
Sincerely, Richard
10-26-2011 | 07:13 AM
#23
My Feedback: (3)
RE: K&B .61
If you haven't bought the parts yet, you may want to buy them from C. Lee at a 10% discount. I think he charges actual shipping, and not the standard $6.99 fee. I recently bought a remote needle valve and carb for a K&B 61 from him that W8YE gave me.
10-27-2011 | 11:19 AM
#25
RE: K&B .61
ORIGINAL: turbo.gst
I would advise you to seriously look at your options as $100 could yield you a NIB .61 engine.
I would advise you to seriously look at your options as $100 could yield you a NIB .61 engine.
