K&B Sportster Club
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K&B Sportster Club
This is a club for the Sportster line of K&B engines and the models that are powered by them.
I'll be adding info to the post below. So check back to this page.
General characteristics of a K&B Sportster engines
That all have the same crank shaft size. 1/4"-28 TPI
Most people who run these engines state that they like to run on a high level of caster oil "25%" in the fuel and that synthetic fuels cause problems.
The timing of these engines make it so that they do not like to run well at high RPM.
You should treat these engines more like a 4-stroke or Diesel, as in they like to swing larger props at slower speeds.
No Sea Plane, flown with a K&B Sportster, has ever had rusty ball bearings in the engine.
I'll be adding info to the post below. So check back to this page.
General characteristics of a K&B Sportster engines
That all have the same crank shaft size. 1/4"-28 TPI
Most people who run these engines state that they like to run on a high level of caster oil "25%" in the fuel and that synthetic fuels cause problems.
The timing of these engines make it so that they do not like to run well at high RPM.
You should treat these engines more like a 4-stroke or Diesel, as in they like to swing larger props at slower speeds.
No Sea Plane, flown with a K&B Sportster, has ever had rusty ball bearings in the engine.
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RE: K&B Sportster Club
K&B Sportster .20
Where to buy new. https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Start prop, 9x4
Fuel tank size 4 oz.
Fuel 5% Nitro, 25% caster
Glow Plug, standard Long Reach Glow Plug
Carb size .199 ID .437 OD
Owners guide
http://www.mecoa.com/kb/56/5600.htm
Parts
Accsessories
Muffler Gaskets, ebay larrybtoys http://www.ebay.com/itm/K-B-Sportste...-/320707403168
Perry Carbarator #3701 Standard carb http://www.perrypumps.com/
Fuel Regulator Iorn Bay http://www.ironbaymodelcompany.com/i...es/Page438.htm
Where to buy new. https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Start prop, 9x4
Fuel tank size 4 oz.
Fuel 5% Nitro, 25% caster
Glow Plug, standard Long Reach Glow Plug
Carb size .199 ID .437 OD
Owners guide
http://www.mecoa.com/kb/56/5600.htm
Parts
Accsessories
Muffler Gaskets, ebay larrybtoys http://www.ebay.com/itm/K-B-Sportste...-/320707403168
Perry Carbarator #3701 Standard carb http://www.perrypumps.com/
Fuel Regulator Iorn Bay http://www.ironbaymodelcompany.com/i...es/Page438.htm
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RE: K&B Sportster Club
K&B Sportster .28
Start prop, 9x4
Fuel tank size, 6 oz.
Fuel, 5% Nitro 25% caster
Glow plug, standard Long Reach Glow Plug
Carb size .248 ID .437 OD
Owners guide,
http://www.mecoa.com/kb/56/5680.htm
New Engines
https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Accessories
Carb,
Perry Carb, #2100
http://www.perrypumps.com/prod01.htm
Fuel Regulator,
http://www.ironbaymodelcompany.com/i...es/Page438.htm
J-Tec mufflers
Custom made
http://www.jtecrc.com/incowlmufflers10-39.htm
Bission mufflers
Pitts,
http://www.bissonmufflers.com/en/muf...ting_id=113959
Sport
http://www.bissonmufflers.com/en/muf...ting_id=113960
Quite Sport
http://www.bissonmufflers.com/en/muf...ting_id=113961
Upright
http://www.bissonmufflers.com/en/muf...ting_id=113962
Inverted
http://www.bissonmufflers.com/en/muf...ting_id=113963
Tru-Turn Spinners
Adapter TT-0140-A
1/4-28 ADP Kit With 1/4" Bushing
http://www.truturn.com/cgi-bin/store...0a&ppinc=adapt
Start prop, 9x4
Fuel tank size, 6 oz.
Fuel, 5% Nitro 25% caster
Glow plug, standard Long Reach Glow Plug
Carb size .248 ID .437 OD
Owners guide,
http://www.mecoa.com/kb/56/5680.htm
New Engines
https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Accessories
Carb,
Perry Carb, #2100
http://www.perrypumps.com/prod01.htm
Fuel Regulator,
http://www.ironbaymodelcompany.com/i...es/Page438.htm
J-Tec mufflers
Custom made
http://www.jtecrc.com/incowlmufflers10-39.htm
Bission mufflers
Pitts,
http://www.bissonmufflers.com/en/muf...ting_id=113959
Sport
http://www.bissonmufflers.com/en/muf...ting_id=113960
Quite Sport
http://www.bissonmufflers.com/en/muf...ting_id=113961
Upright
http://www.bissonmufflers.com/en/muf...ting_id=113962
Inverted
http://www.bissonmufflers.com/en/muf...ting_id=113963
Tru-Turn Spinners
Adapter TT-0140-A
1/4-28 ADP Kit With 1/4" Bushing
http://www.truturn.com/cgi-bin/store...0a&ppinc=adapt
#4
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RE: K&B Sportster Club
K&B Sportster .45
Start prop 10x6
Fuel tank size 8 to 10 oz.
Fuel 5% Nitro 25% caster
Glow plug, standard long glow plug
Carb size .270 ID .530 OD
Owners guide
http://www.mecoa.com/kb/59/5900.htm
New Engines
MECOA
https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Parts
Accessories
Perry Carbs,
Standard #2600
Pump #9300
http://www.perrypumps.com/prod01.htm
Fuel management,
VP-30 Regulating pump for use with pump carbs
http://www.perrypumps.com/prod02.htm
Iron Bay Fuel Regulator for non-pump carbs
http://www.ironbaymodelcompany.com/i...es/Page438.htm
Slimline pitts muffler, #3513
http://www.slimlineproducts.com/pk4/store.pl?section=91
Bisson Muffler #11048
http://www.bissonmufflers.com/en/muf...ting_id=113999
Macs Mufflers
.40 Size Adapter Muffler #6400
Adapter Plate #6548
http://www.macspro.com/onepiece.asp
Macs Headers
Standard 2540
Long 2541
Ex-long 2542
15° marine 2543
http://www.macspro.com/headers_side.asp
On Board Glow Hobby King
http://www.hobbyking.com/hobbyking/s...dproduct=15517
Tru-Turn Spinners
Adapter TT-0140-A
1/4-28 ADP Kit With 1/4" Bushing
http://www.truturn.com/cgi-bin/store...0a&ppinc=adapt
Start prop 10x6
Fuel tank size 8 to 10 oz.
Fuel 5% Nitro 25% caster
Glow plug, standard long glow plug
Carb size .270 ID .530 OD
Owners guide
http://www.mecoa.com/kb/59/5900.htm
New Engines
MECOA
https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Parts
Accessories
Perry Carbs,
Standard #2600
Pump #9300
http://www.perrypumps.com/prod01.htm
Fuel management,
VP-30 Regulating pump for use with pump carbs
http://www.perrypumps.com/prod02.htm
Iron Bay Fuel Regulator for non-pump carbs
http://www.ironbaymodelcompany.com/i...es/Page438.htm
Slimline pitts muffler, #3513
http://www.slimlineproducts.com/pk4/store.pl?section=91
Bisson Muffler #11048
http://www.bissonmufflers.com/en/muf...ting_id=113999
Macs Mufflers
.40 Size Adapter Muffler #6400
Adapter Plate #6548
http://www.macspro.com/onepiece.asp
Macs Headers
Standard 2540
Long 2541
Ex-long 2542
15° marine 2543
http://www.macspro.com/headers_side.asp
On Board Glow Hobby King
http://www.hobbyking.com/hobbyking/s...dproduct=15517
Tru-Turn Spinners
Adapter TT-0140-A
1/4-28 ADP Kit With 1/4" Bushing
http://www.truturn.com/cgi-bin/store...0a&ppinc=adapt
#5
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RE: K&B Sportster Club
K&B Sportster .65
Start prop 11x7
Fuel tank size, 12 to 16 oz.
Fuel, 5% Nitro 25% caster
Glow plug, standard Long Reach Glow Plug
Carb size .340 ID .625 OD
Owners guide
http://www.mecoa.com/kb/58/5800.htm
New Engines,
MECOA
https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Carbs,
Perry Carbs
Standard Carb 4600
Pump Carb 9600
http://www.perrypumps.com/prod01.htm#kb
Fuel management,
VP-30 Regulating pump for use with pump carbs
http://www.perrypumps.com/prod02.htm
Iron Bay Fuel Regulator for non-pump carbs
http://www.ironbaymodelcompany.com/i...es/Page438.htm
Spinner adapters,
Tru-Turn
TT-0140-A
1/4-28 ADP Kit With 1/4" Bushing
http://www.truturn.com/cgi-bin/store...0a&ppinc=adapt
Mufflers,
Bission
.65 Pitts #11061
http://www.bissonmufflers.com/en/muf...ting_id=114000
.65 Sport #11062
http://www.bissonmufflers.com/en/muf...ting_id=114001
Macs
One Piece Mufflers
http://www.macspro.com/onepiece.asp
.60 size Adapter Muffler #6700
Adapter Plate #6788
Macs Tuned Pipe Headers
http://www.macspro.com/headers_side.asp
Standard 2780
Long 2781
Ex-long 2782
15° marine 2783
Slimline
Pitts #3112
Invert or Upright #3102
http://www.slimlineproducts.com/pk4/store.pl?section=92
On Board Glow Hobby King
http://www.hobbyking.com/hobbyking/s...dproduct=15517
Start prop 11x7
Fuel tank size, 12 to 16 oz.
Fuel, 5% Nitro 25% caster
Glow plug, standard Long Reach Glow Plug
Carb size .340 ID .625 OD
Owners guide
http://www.mecoa.com/kb/58/5800.htm
New Engines,
MECOA
https://shop.mecoa.com/shopdisplayproducts.asp?id=22
Carbs,
Perry Carbs
Standard Carb 4600
Pump Carb 9600
http://www.perrypumps.com/prod01.htm#kb
Fuel management,
VP-30 Regulating pump for use with pump carbs
http://www.perrypumps.com/prod02.htm
Iron Bay Fuel Regulator for non-pump carbs
http://www.ironbaymodelcompany.com/i...es/Page438.htm
Spinner adapters,
Tru-Turn
TT-0140-A
1/4-28 ADP Kit With 1/4" Bushing
http://www.truturn.com/cgi-bin/store...0a&ppinc=adapt
Mufflers,
Bission
.65 Pitts #11061
http://www.bissonmufflers.com/en/muf...ting_id=114000
.65 Sport #11062
http://www.bissonmufflers.com/en/muf...ting_id=114001
Macs
One Piece Mufflers
http://www.macspro.com/onepiece.asp
.60 size Adapter Muffler #6700
Adapter Plate #6788
Macs Tuned Pipe Headers
http://www.macspro.com/headers_side.asp
Standard 2780
Long 2781
Ex-long 2782
15° marine 2783
Slimline
Pitts #3112
Invert or Upright #3102
http://www.slimlineproducts.com/pk4/store.pl?section=92
On Board Glow Hobby King
http://www.hobbyking.com/hobbyking/s...dproduct=15517
#6
RE: K&B Sportster Club
Thanks Amish
I have owned 2 .20s and 2 .45s. Presently own a .65. Wish I still had the previous 4 engines.
Good running engines if treated correctly. They are made a little different and so need to be treated the same.
Just so others know they like oil. They also need a goodly amount of castor oil in the mix. Give 'em what they want and they will go forever.
So here is an earlier pic of my plane sporting a sportster. The plane is still under construction and will keep the .65 sportster.
Amish, I bet you reconize this plane. I will have to slap the engine back on for some pics now that it has some paint.
I have owned 2 .20s and 2 .45s. Presently own a .65. Wish I still had the previous 4 engines.
Good running engines if treated correctly. They are made a little different and so need to be treated the same.
Just so others know they like oil. They also need a goodly amount of castor oil in the mix. Give 'em what they want and they will go forever.
So here is an earlier pic of my plane sporting a sportster. The plane is still under construction and will keep the .65 sportster.
Amish, I bet you reconize this plane. I will have to slap the engine back on for some pics now that it has some paint.
#7
RE: K&B Sportster Club
Big time Sportster fan here! I have at least one of each size. The oldest, a 65, was bought in 1987( it has no bronze bushing and an O-ring head gasket). I have yet to wear one out.
#8
RE: K&B Sportster Club
I currently have 2 Sportster .65's from the Goldberg Mig-27 Army Drone foamies. They have bad carbs so I'm in search of new ones that actually work. Mine were made in 1990 or so, and have no head gasket. Metal to Metal head, and no bronze bushings either.
I am keeping my eyes open for a .20, .28, and a .45 so I can have at least 1 of each size. I'll only buy these engines New as most people dont run castor fuel in them and ruin them.
I'm a big fan of the Sportster engines as well. No planes to speak of just yet... but that will change with time. I love the sound they make.
I am keeping my eyes open for a .20, .28, and a .45 so I can have at least 1 of each size. I'll only buy these engines New as most people dont run castor fuel in them and ruin them.
I'm a big fan of the Sportster engines as well. No planes to speak of just yet... but that will change with time. I love the sound they make.
#9
RE: K&B Sportster Club
I think many people thought poorly of them, but it was simply a lack of knowledge. The right kinds of oil and right amount, make all the defference.
I prop them more like a 4 stroke. And the fuel burn is very low compared to other 2 strokes. I have had my .65 go for more than 30 minutes on 1 tank (16 ounce) of fuel doing touch and go practice.
For oil I go for 22% with 1/2 being castor.
I prop them more like a 4 stroke. And the fuel burn is very low compared to other 2 strokes. I have had my .65 go for more than 30 minutes on 1 tank (16 ounce) of fuel doing touch and go practice.
For oil I go for 22% with 1/2 being castor.
#11
RE: K&B Sportster Club
ORIGINAL: flyingagin
I think many people thought poorly of them, but it was simply a lack of knowledge. The right kinds of oil and right amount, make all the defference.
I prop them more like a 4 stroke. And the fuel burn is very low compared to other 2 strokes. I have had my .65 go for more than 30 minutes on 1 tank (16 ounce) of fuel doing touch and go practice.
For oil I go for 22% with 1/2 being castor.
I think many people thought poorly of them, but it was simply a lack of knowledge. The right kinds of oil and right amount, make all the defference.
I prop them more like a 4 stroke. And the fuel burn is very low compared to other 2 strokes. I have had my .65 go for more than 30 minutes on 1 tank (16 ounce) of fuel doing touch and go practice.
For oil I go for 22% with 1/2 being castor.
If anyone has 2 good/working carbs that will fit the .65 (.622" neck) I will buy them in a heartbeat.
#12
RE: K&B Sportster Club
ORIGINAL: flyingagin
You got that right.
ORIGINAL: 1QwkSport2.5r
I'll only buy these engines New as most people dont run castor fuel in them and ruin them.
I'll only buy these engines New as most people dont run castor fuel in them and ruin them.
#15
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RE: K&B Sportster Club
ORIGINAL: 1QwkSport2.5r
If anyone has 2 good/working carbs that will fit the .65 (.622'' neck) I will buy them in a heartbeat.
If anyone has 2 good/working carbs that will fit the .65 (.622'' neck) I will buy them in a heartbeat.
I put a link to the Perry carbs up there.
#17
RE: K&B Sportster Club
So what's the plane with the .65?
I liked my .20 on the test stand very much. Have not flown it yet. I used 22% oil, 1/2 castor, and broke it in with short rich runs, gradually getting leaner. It just got better and better. At the end, it would turn a 12x4 without any complaint.
And yes, the sound with the stock muffler is nice.
Jim
I liked my .20 on the test stand very much. Have not flown it yet. I used 22% oil, 1/2 castor, and broke it in with short rich runs, gradually getting leaner. It just got better and better. At the end, it would turn a 12x4 without any complaint.
And yes, the sound with the stock muffler is nice.
Jim
#18
RE: K&B Sportster Club
ORIGINAL: AmishWarlord
I put a link to the Perry carbs up there.
ORIGINAL: 1QwkSport2.5r
If anyone has 2 good/working carbs that will fit the .65 (.622'' neck) I will buy them in a heartbeat.
If anyone has 2 good/working carbs that will fit the .65 (.622'' neck) I will buy them in a heartbeat.
I put a link to the Perry carbs up there.
ORIGINAL: flyingagin
I have a couble of .60ish carbs, sans engines, I will check the neck size.
I have a couble of .60ish carbs, sans engines, I will check the neck size.
The base is .622" and the venturi is .334". A slightly bigger venturi doesnt bother me since the muffler extensions have pressure taps.
I compared my carb's internals (visually) to Hobbsy's Sportster .65 carb and they look identical. Supposedly the Drone engines have botched up carbs. Rumor has it a new Idle disk might fix my problems, but I'm not in the position to throw $40 into the wind since the Barrel might be part of the problem as well. A new barrel (and carb housing comes with the barrel as a set) and idle disk costs as much as a whole carb from Mecoa.
Edit: This forum is really getting aggravating with all the errors and timeouts. It took me almost a half hour to post this. For how much sponsorship this site gets, you'd think they'd be able to get their server problems sorted out a lot quicker than they are.
#19
RE: K&B Sportster Club
ORIGINAL: buzzard bait
So what's the plane with the .65?
I liked my .20 on the test stand very much. Have not flown it yet. I used 22% oil, 1/2 castor, and broke it in with short rich runs, gradually getting leaner. It just got better and better. At the end, it would turn a 12x4 without any complaint.
And yes, the sound with the stock muffler is nice.
Jim
So what's the plane with the .65?
I liked my .20 on the test stand very much. Have not flown it yet. I used 22% oil, 1/2 castor, and broke it in with short rich runs, gradually getting leaner. It just got better and better. At the end, it would turn a 12x4 without any complaint.
And yes, the sound with the stock muffler is nice.
Jim
The front bushing on my .65 doesnt spew nearly as much oil as it used to on SIG fuel.
#20
RE: K&B Sportster Club
I run my 65 with a BCM low DB muffler. I have people come up to me and ask what I'm flying as it sounds more like a 4-stroke than anything. I tell them what it is and they have to see it after landing as they don't believe it. I put it on 45 sized aerobatic planes using the spider backplate soft mounted with a 13 x 5 prop. Great power and extended verticals without a lot of speed. The extra airflow over the control surfaces makes for some really smooth landings. I Really like it in that role!
#23
RE: K&B Sportster Club
I happen to have four K&B .20 Sportster engines and a .65 Sportster engine too. I had originally planned to use the .20 engines on a Royal B-17 I was building but the framed up plane met its end when I was moving and got crushed in the process.
#24
RE: K&B Sportster Club
ORIGINAL: buzzard bait
Very interesting. Only issue is how many different kinds of fuel I'm going to keep!
Very interesting. Only issue is how many different kinds of fuel I'm going to keep!
I got a funny look from one of my Airboat buddies last summer. "Your engine's exhaust smells weird" He's used to Omega, so of course it smelled funny.. haha.
#25
RE: K&B Sportster Club
ORIGINAL: earlwb
I happen to have four K&B .20 Sportster engines and a .65 Sportster engine too. I had originally planned to use the .20 engines on a Royal B-17 I was building but the framed up plane met its end when I was moving and got crushed in the process.
I happen to have four K&B .20 Sportster engines and a .65 Sportster engine too. I had originally planned to use the .20 engines on a Royal B-17 I was building but the framed up plane met its end when I was moving and got crushed in the process.
edit: Also, your .65 has the big head fins on it. Must be an early model. Most of the newer-than-'90 engines have the short machined head fins.
edit #2 (while RCU will let me): Since this is a new club and I feel left out since I dont have a club member number in the Enya, Fox, or ST clubs... can I be #4 if we do member numbers? [8D] (I know it is of zero importance but I dont care.. lol)