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K&B 65 Sportster - 11/4/2003 11:01:49 PM   
tommy157


 

Posts: 209
Joined: 10/23/2003
From: Midwest City, OK, USA
Status: offline 		What is everyones opinion on this engine and what would be a good price for it?
       Post #: 1

RE: K&B 65 Sportster - 11/4/2003 11:06:03 PM   
JWN



Posts: 4785
Joined: 3/26/2002
From: Florence, TX, USA
Status: offline 		$3.00. They are exceptional fishing weights if you live near the coast.

John

(in reply to tommy157)
       Post #: 2

RE: K&B 65 Sportster - 11/5/2003 12:03:07 AM   
tommy157


 

Posts: 209
Joined: 10/23/2003
From: Midwest City, OK, USA
Status: offline 		Your information was neither informative or appreciated..but thanks anyway..NOT!!!

(in reply to tommy157)
       Post #: 3

RE: K&B 65 Sportster - 11/5/2003 12:20:07 AM   
jessiej



Posts: 1790
Joined: 7/6/2003
From: STATESBORO, GA, USA
Status: offline 		I can not offer an opinion on market value. I can tell you that in my experience and that of others i have flown with they are reliable, user friendly engines. They do tend to take a bit of break in which doubtless does not appeal to the instant gratification crowd. I have noticed that this same group is quick to offer advice on subjects of which they have no knowlege.

(in reply to tommy157)
       Post #: 4

RE: K&B 65 Sportster - 11/5/2003 12:25:12 AM   
JWN



Posts: 4785
Joined: 3/26/2002
From: Florence, TX, USA
Status: offline
quote:

ORIGINAL: tommy157

Your information was neither informative or appreciated..but thanks anyway..NOT!!!


You asked for an opinion, and that's exactly what you received. If you didn't like it, I'm sorry but you did ask for it. Maybe next time you should ask for only postive opinions.

John

(in reply to tommy157)
       Post #: 5

RE: K&B 65 Sportster - 11/5/2003 1:32:10 AM   
maxtenet



Posts: 703
Joined: 10/18/2002
From: Towson, MD, USA
Status: offline 		They are actually good engines. They do not have a liner and as such if you run lean and screw it up you need a new engine , not just a liner. Their performance is average and I would just as soon buy one of these as a generic chinese engine. Don't listen to those who have never had one. I have 2 and they are... well,...average just like O.S. engines


Max

(in reply to JWN)
       Post #: 6

RE: K&B 65 Sportster - 11/5/2003 1:33:12 AM   
J-3



Posts: 191
Joined: 2/5/2002
From: Saint Peters, MO, USA
Status: online 		I have this engine new in the box, and I plan on using mine next season. I have collected about 20 user comments from the boards here. Send me an email and I will send you what I have.
briankretchmar@charter.net

Thanks...Brian

(in reply to JWN)
       Post #: 7

RE: K&B 65 Sportster - 11/5/2003 1:46:44 AM   
jessiej



Posts: 1790
Joined: 7/6/2003
From: STATESBORO, GA, USA
Status: offline 		[You asked for an opinion, and that's exactly what you received. If you didn't like it, I'm sorry but you did ask for it. Maybe next time you should ask for only postive opinions. ]


In my opinion your opinions would get more respect if you left out the sarcasm and included some evidence as to how you formed that opinion.

Thats just my opinion.

(in reply to J-3)
       Post #: 8

RE: K&B 65 Sportster - 11/5/2003 2:11:49 AM   
tommy157


 

Posts: 209
Joined: 10/23/2003
From: Midwest City, OK, USA
Status: offline 		Thanks to all who responded...New to the sport and just looking for advice..thanks again...

Tommy

(in reply to jessiej)
       Post #: 9

RE: K&B 65 Sportster - 11/5/2003 8:34:53 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		Tommy:

The Sportster 65 is good, so long as you remember what it is. Not a screamer at all, but a good lugger.

As stated in an earlier post, avoid lean runs. Also, be sure to use at least a percentage of castor oil in tour fuel, they are plain bearing engines and need it. The lastthing, you will notice there are only four head screws, They go all the way through the cylinder fins, and screw into the crankcase. If you strip one, a new crankcase is the repair, so be careful.

Kept on the rich side of peak, with castor oil, and not oversped, they are good long lasting engines.

Final point - they have their own mechanical sound, unlike any other engine you've run. Doesn't mean there's anything wrong, it's just all the little men inside playing with their hammers. Feed them more methanol and castor oil, they'll keep on banging away.

Bill.

_____________________________

Real Airplanes have Two Engines
AMA 25139 - More than 40 years.

(in reply to tommy157)
       Post #: 10

RE: K&B 65 Sportster - 11/5/2003 9:17:02 AM   
jsilvers


 

Posts: 85
Joined: 10/24/2003
From: Henderson, NV, USA
Status: offline 		I have 1 of the 65 Sportster and 3 of the 61's. For the difference in price ($20-$25)
the 61 is a much better deal. The 65 has no cylinder sleeve and cannot be rebuilt.
It also has bushings rather than ball bearings and is a heavyweight.

The 61 ( I have the old style 6550) has ball bearings and is sleeved.
Both take a long break in ( at least 5 tanksrunning rich) but will run forever
after that if you take car of them.

I have not used the new twister 61, but hear it is a good engine also.

65's seem to go for $25 (well used) to $50-$75 (new).
61's $60-$75. Usually many of them on E-Bay.

Watch the pictures, many people confuse the 2.

I am a big fan of K&B and have had no problems with their engines.
I have had a couple serviced and their factory service is a little slow, but prices are good.

Joel Silverstein

(in reply to William Robison)
       Post #: 11

RE: K&B 65 Sportster - 11/5/2003 9:45:39 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		Joel:

I don't have any Sportsters any more, but I still have a dozen or so ringed K&B 61 engines types 6530, 6550, and two 6560 pumpers. I also have a potfull of the ringed 40s, 83xx series and 4011 types.

Yes, I like K&B, in case you wondered.

Bill.

_____________________________

Real Airplanes have Two Engines
AMA 25139 - More than 40 years.

(in reply to jsilvers)
       Post #: 12

RE: K&B 65 Sportster - 11/5/2003 1:38:30 PM   
sgilkey


 

Posts: 141
Joined: 2/27/2002
From: Shelby Township, MI, USA
Status: offline 		I have run several .65 Sportsters and like them a lot. Fuel with 20% oil and some castor (I used 50% castor Sig 10% nitro fuel) is recommended. The carb is easy to set and I got good starting, idle, and throttling performance. I tried several props and for my application (sport aerobatic plane) the 13x6 APC was a great choice and gave tremendous thrust and vertical performance. I ran mine without the internal muffler baffle, which gave a significant boost in performance. Good luck!

(in reply to William Robison)
       Post #: 13

RE: K&B 65 Sportster - 11/5/2003 2:31:51 PM   
tommy157


 

Posts: 209
Joined: 10/23/2003
From: Midwest City, OK, USA
Status: offline 		Is the K&B 65 Sportster Ball bearing or not..was told it was when I bought it..

Tommy

(in reply to sgilkey)
       Post #: 14

RE: K&B 65 Sportster - 11/5/2003 5:14:58 PM   
JWN



Posts: 4785
Joined: 3/26/2002
From: Florence, TX, USA
Status: offline
quote:

ORIGINAL: jessiej
In my opinion your opinions would get more respect if you left out the sarcasm and included some evidence as to how you formed that opinion.

Thats just my opinion.


That's fair enough. Why I don't like them. They are heavy for the power they put out. They are not even a plain bearing engine as they the crank shaft runs directly on the case. It doesn't even have bronze bushings. As others have pointed out, they also do not have a sleeve. The piston runs directly on the case. The engine will wear out very quickly if it ingests even a small amount of dust at which point you toss it and buy another since they are not rebuildable. They do not tolerate running hot at all such as the accidental lean run. While the cost is attractive at first glance, there are far better engines for just a few $'s more. Lastly, these types of engines are typically marketed towards the beginner. The last thing a beginner needs is a engine that is not tolerant of a beginners mistakes such as running lean. Yes, they do run well, but not great. Will they get the job done, more than likely. But why settle for one of these when there are far better choices available?

John

(in reply to jessiej)
       Post #: 15

RE: K&B 65 Sportster - 11/5/2003 6:30:50 PM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		JWN:

Some corrections.

quote:

ORIGINAL: JWN
...the crank shaft runs directly on the case. It doesn't even have bronze bushings.


This is the way all but a very few Cox engines are built, they run forever. If run with castor oil, or a castor blend.

The early Sportsters did indeed run the crank directly in the aluminum, but the later engines, starting in the mid eighties, have a bronze bushing cast in the case. And just like the Cox engines, they must have some castor oil in the lube.

quote:

As others have pointed out, they also do not have a sleeve. The piston runs directly on the case. The engine will wear out very quickly if it ingests even a small amount of dust at which point you toss it and buy another since they are not rebuildable.


Another error. They can be repaired. Sportsters do have a sleeve, made in one piece with the cooling fins. And rather than having the piston and ring run directly on the aluminum, they are AAC design, as are many other engines, including the later des