New .90 gas engine (15cc)
05-01-2010, 08:18 PM
#51
RE: New .90 gas engine (15cc)
I got a chance to meet Ken Lambert at his shop in Florida. I learned a lot about engines & what can be done. Ken has some real nice set-ups for doing machine work on about any part of a engine. We sure had a good time. I wish I could do the neat ideas he comes up with. Be sure that if you have a Supertiger engine....he can do wonders for it! Keep up the good work ken, I sure wish I lived close by.....I miss those good days together. Capt,n John
05-05-2010, 10:19 AM
#52
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RE: New .90 gas engine (15cc)
I saw that Magnum has a .52 size Gasoline engine for 200$..
Turns a 13"prop.
Great price, and hopefully runs better than the saito's did...as it is the same type of carb on it.
Not sure if it has a bearing on the rod.
Turns a 13"prop.
Great price, and hopefully runs better than the saito's did...as it is the same type of carb on it.
Not sure if it has a bearing on the rod.
05-13-2010, 12:22 PM
#53
RE: New .90 gas engine (15cc)
Fox has a gas version of their .50 glow available now. Modified twin needle carb. More power than the Magnum. Turns a 12-6 at 10,500. It's $275 but you may be able to get it for less if you turn in a junker.
07-08-2010, 05:38 AM
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RE: New .90 gas engine (15cc)
where does the opinion that a needle bearing is needed on the con rod or big end bearing for a gasoline engine?
They don't rev enearly as high as methanol engines so plain bearings (bushes) works 100%.
Look at most race car engines, plainbearing, high precision but they are plainbearings.
Big end bearings and conrod bearings are lubricated by hydrodynamic pressure so as long as the fuel or oil viscosity is adequate the film strength provides almost zero friction and no metal to metal contact.
Glow motors are a little different due to the higher rpm. Its just more economical to plug in a needle bearing than to precision machine a plain bearing in such small engines.
Mpascual, I like this engine. I'd like to get one for a FW Ta 152H arf I'm getting. Do you know if there is a distributor in South Africa?
if not do you have the url to the manufacturer so I can find out the relevant info.
One more thing, the cooling fins on this motor is quite small but I would assume that the oil mix is higher to compensate?
They don't rev enearly as high as methanol engines so plain bearings (bushes) works 100%.
Look at most race car engines, plainbearing, high precision but they are plainbearings.
Big end bearings and conrod bearings are lubricated by hydrodynamic pressure so as long as the fuel or oil viscosity is adequate the film strength provides almost zero friction and no metal to metal contact.
Glow motors are a little different due to the higher rpm. Its just more economical to plug in a needle bearing than to precision machine a plain bearing in such small engines.
Mpascual, I like this engine. I'd like to get one for a FW Ta 152H arf I'm getting. Do you know if there is a distributor in South Africa?
if not do you have the url to the manufacturer so I can find out the relevant info.
One more thing, the cooling fins on this motor is quite small but I would assume that the oil mix is higher to compensate?
07-08-2010, 09:38 AM
#55
RE: New .90 gas engine (15cc)
I messed up and posted about a .52 engine.I removed the data...I thought it wouldbe okhere just talking about the new small gassers on the market. Capt,n 
07-08-2010, 05:13 PM
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RE: New .90 gas engine (15cc)
captinjohn and moderators :
This is a trhead started to discuss about a new JBA .90 engine.
I don't know why people start to put Magnum 52 info in this thread and why does not start their own thread about MAGNUM 52
This is a trhead started to discuss about a new JBA .90 engine.
I don't know why people start to put Magnum 52 info in this thread and why does not start their own thread about MAGNUM 52
07-08-2010, 05:18 PM
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RE: New .90 gas engine (15cc)
I see that Valley View RC has these in stock.
http://www.valleyviewrc.com/Gas%20Engines.htm
JBA J15G 15cc gas engine
Introducing the brand new JBA J15G 15cc gas engine.
Will fit most .90-1.20 models.
Specifications:
2 Cycle Air Cooled Gasoline Engine for airplane use only
" Displacement (cc): 14.93cc
" Bore and Stroke (mm): 27.8mm×24.6mm
Carburetor: Walbro WT series
" Maximum Output: 3.2HP / 12000RPM
" RPM Range: 1800 - 13000 RPM
" Ignition: Auto advanced RCEXL DC-CDI
http://www.valleyviewrc.com/Gas%20Engines.htm
JBA J15G 15cc gas engine
Introducing the brand new JBA J15G 15cc gas engine.
Will fit most .90-1.20 models.
Specifications:
2 Cycle Air Cooled Gasoline Engine for airplane use only
" Displacement (cc): 14.93cc
" Bore and Stroke (mm): 27.8mm×24.6mm
Carburetor: Walbro WT series
" Maximum Output: 3.2HP / 12000RPM
" RPM Range: 1800 - 13000 RPM
" Ignition: Auto advanced RCEXL DC-CDI
07-08-2010, 05:19 PM
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RE: New .90 gas engine (15cc)
ORIGINAL: TimBle
where does the opinion that a needle bearing is needed on the con rod or big end bearing for a gasoline engine?
They don't rev enearly as high as methanol engines so plain bearings (bushes) works 100%.
Look at most race car engines, plainbearing, high precision but they are plainbearings.
Big end bearings and conrod bearings are lubricated by hydrodynamic pressure so as long as the fuel or oil viscosity is adequate the film strength provides almost zero friction and no metal to metal contact.
Glow motors are a little different due to the higher rpm. Its just more economical to plug in a needle bearing than to precision machine a plain bearing in such small engines.
Mpascual, I like this engine. I'd like to get one for a FW Ta 152H arf I'm getting. Do you know if there is a distributor in South Africa?
if not do you have the url to the manufacturer so I can find out the relevant info.
One more thing, the cooling fins on this motor is quite small but I would assume that the oil mix is higher to compensate?
where does the opinion that a needle bearing is needed on the con rod or big end bearing for a gasoline engine?
They don't rev enearly as high as methanol engines so plain bearings (bushes) works 100%.
Look at most race car engines, plainbearing, high precision but they are plainbearings.
Big end bearings and conrod bearings are lubricated by hydrodynamic pressure so as long as the fuel or oil viscosity is adequate the film strength provides almost zero friction and no metal to metal contact.
Glow motors are a little different due to the higher rpm. Its just more economical to plug in a needle bearing than to precision machine a plain bearing in such small engines.
Mpascual, I like this engine. I'd like to get one for a FW Ta 152H arf I'm getting. Do you know if there is a distributor in South Africa?
if not do you have the url to the manufacturer so I can find out the relevant info.
One more thing, the cooling fins on this motor is quite small but I would assume that the oil mix is higher to compensate?
This JBA .90 is a powerful and sweet engine. Easy start, reliable idle, smooth transition and hi power on top.
You have a pm. read it
07-09-2010, 03:55 AM
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RE: New .90 gas engine (15cc)
ORIGINAL: captinjohn
Sorrry about that .52 post....here is a link to the JBA .90<hr />http://www.youtube.com/watch?v=zZFrP...eature=related
Sorrry about that .52 post....here is a link to the JBA .90<hr />http://www.youtube.com/watch?v=zZFrP...eature=related
The engine showed in the video is a 50cc gas engine , also produced by JBA , the J50G , available at valleyview rc .
Regards
07-09-2010, 07:40 AM
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RE: New .90 gas engine (15cc)
Thanks Mpascual.
What is the octane requirement for the JBA 15cc engine?
I read somewhere that it is 90octane but is that RON or the USA (RON+MON)/2
Very important bercause here in SA we have max RON95ULP(unleaded Petrol/ gasoline) at the pump.
AvGAS is higher at around 111 RON or racing fuel is around 100 RON. I willneed to know so I can understand if I will need to modify my retail site ULP95 or if I can use AvGAS or ULRacing Fuel.
The AvGAS and UL Racing fuels are a little less friendly to the environment due to veryhigh aromatics and in 100LL (AVGAS) the lead is not good stuff for people at a flying field.
Sorry RON is Reasearch Octane Numbers and determines anti knock at medium load
MONis Motor Octane Number and determines anti knock at max load.
US uses an average of the two for their octane number displayed on retail pumps.
What is the octane requirement for the JBA 15cc engine?
I read somewhere that it is 90octane but is that RON or the USA (RON+MON)/2
Very important bercause here in SA we have max RON95ULP(unleaded Petrol/ gasoline) at the pump.
AvGAS is higher at around 111 RON or racing fuel is around 100 RON. I willneed to know so I can understand if I will need to modify my retail site ULP95 or if I can use AvGAS or ULRacing Fuel.
The AvGAS and UL Racing fuels are a little less friendly to the environment due to veryhigh aromatics and in 100LL (AVGAS) the lead is not good stuff for people at a flying field.
Sorry RON is Reasearch Octane Numbers and determines anti knock at medium load
MONis Motor Octane Number and determines anti knock at max load.
US uses an average of the two for their octane number displayed on retail pumps.
07-09-2010, 09:42 AM
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RE: New .90 gas engine (15cc)
ORIGINAL: TimBle
Thanks Mpascual.
What is the octane requirement for the JBA 15cc engine?
I read somewhere that it is 90octane but is that RON or the USA (RON+MON)/2
Very important bercause here in SA we have max RON95ULP(unleaded Petrol/ gasoline) at the pump.
AvGAS is higher at around 111 RON or racing fuel is around 100 RON. I willneed to know so I can understand if I will need to modify my retail site ULP95 or if I can use AvGAS or ULRacing Fuel.
The AvGAS and UL Racing fuels are a little less friendly to the environment due to veryhigh aromatics and in 100LL (AVGAS) the lead is not good stuff for people at a flying field.
Sorry RON is Reasearch Octane Numbers and determines anti knock at medium load
MON is Motor Octane Number and determines anti knock at max load.
US uses an average of the two for their octane number displayed on retail pumps.
Thanks Mpascual.
What is the octane requirement for the JBA 15cc engine?
I read somewhere that it is 90octane but is that RON or the USA (RON+MON)/2
Very important bercause here in SA we have max RON95ULP(unleaded Petrol/ gasoline) at the pump.
AvGAS is higher at around 111 RON or racing fuel is around 100 RON. I willneed to know so I can understand if I will need to modify my retail site ULP95 or if I can use AvGAS or ULRacing Fuel.
The AvGAS and UL Racing fuels are a little less friendly to the environment due to veryhigh aromatics and in 100LL (AVGAS) the lead is not good stuff for people at a flying field.
Sorry RON is Reasearch Octane Numbers and determines anti knock at medium load
MON is Motor Octane Number and determines anti knock at max load.
US uses an average of the two for their octane number displayed on retail pumps.
Unleaded fuel 95 IO works well in this engine.
Regards
07-09-2010, 09:00 PM
#65
RE: New .90 gas engine (15cc)
mpascual....Here is the correct link.
Regards
[/quote]
Is this the right link??? http://www.youtube.com/watch?v=A6zAw...eature=related
07-11-2010, 02:34 PM
#67
RE: New .90 gas engine (15cc)
mpascual:
Thank you very much for all the engine videos that you have took the time to place on YouTube. You sure must like engines? I bet you liked engines as a very young boy. I think there is many of us like that! Best Regards Capt,n
Thank you very much for all the engine videos that you have took the time to place on YouTube. You sure must like engines? I bet you liked engines as a very young boy. I think there is many of us like that! Best Regards Capt,n
07-11-2010, 03:15 PM
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RE: New .90 gas engine (15cc)
If anyone wants to run 50-1 oil in a small gasser, buy a new crank and rod before you do the testing, you WILL need it when your rod sticks to the crank from lack of oil......I have a ST 3000 crank and rod here from a customer who tried just that...It can get expensive....Engines with oil pumps are acompletely different situation...
07-12-2010, 02:38 AM
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RE: New .90 gas engine (15cc)
Thanks for the info, Antique:
The manufacturer has tested the engine before put it on the market.
Also , the engine comes with a user manual. Maybe it's a good idea to read it BEFORE first run, i.e. the paragraph about fuel-oil mix suggested.
Regards
The manufacturer has tested the engine before put it on the market.
Also , the engine comes with a user manual. Maybe it's a good idea to read it BEFORE first run, i.e. the paragraph about fuel-oil mix suggested.
Regards
07-12-2010, 11:59 AM
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RE: New .90 gas engine (15cc)
Today i've received first production batch of engines and spare parts.
I LIKE IT.
Tthe manufacturer has introduced some minor changes and improvements.
- The carburetor now has internal pulse like the Evolution 26
- The spark plug cap is now at 90 degrees, and comes with two springs to fit inside between the spark and boot.
- The lever for throttle is new.
- The front prop washer is harder than before, and does not bends (with APC props,).
Regards
I LIKE IT.
Tthe manufacturer has introduced some minor changes and improvements.
- The carburetor now has internal pulse like the Evolution 26
- The spark plug cap is now at 90 degrees, and comes with two springs to fit inside between the spark and boot.
- The lever for throttle is new.
- The front prop washer is harder than before, and does not bends (with APC props,).
Regards
07-12-2010, 12:08 PM
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RE: New .90 gas engine (15cc)
ORIGINAL: captinjohn
mpascual:
Thank you very much for all the engine videos that you have took the time to place on YouTube. You sure must like engines? I bet you liked engines as a very young boy. I think there is many of us like that! Best Regards Capt,n
mpascual:
Thank you very much for all the engine videos that you have took the time to place on YouTube. You sure must like engines? I bet you liked engines as a very young boy. I think there is many of us like that! Best Regards Capt,n
I started to play with engines with some C/L diesel engines, ZOM, LLAM, PARES, SuperTigre G20/15 , Rossi F15, , and at 14 years old i was one of the mechanics of a combat CL team on a world championship here in my country.
Now (some years later) i'm the support for some engines brands ............. on my leisure time
Today i've also received a new CRRCpro GF55I twin engine ....
What dilemma !!!!! I must choice between two for test .................
Regards
07-12-2010, 12:22 PM
#72
RE: New .90 gas engine (15cc)
ORIGINAL: mpascual
Thank you for your words, and yes:
I started to play with engines with some C/L diesel engines, ZOM, LLAM, PARES, SuperTigre G20/15 , Rossi F15, , and at 14 years old i was one of the mechanics of a combat CL team on a world championship here in my country.
Now (some years later) i'm the support for some engines brands ............. on my leisure time
Today i've also received a new CRRCpro GF55I twin engine ....
What dilemma !!!!! I must choice between two for test .................
Regards
ORIGINAL: captinjohn
mpascual:
Thank you very much for all the engine videos that you have took the time to place on YouTube. You sure must like engines? I bet you liked engines as a very young boy. I think there is many of us like that! Best Regards Capt,n
mpascual:
Thank you very much for all the engine videos that you have took the time to place on YouTube. You sure must like engines? I bet you liked engines as a very young boy. I think there is many of us like that! Best Regards Capt,n
I started to play with engines with some C/L diesel engines, ZOM, LLAM, PARES, SuperTigre G20/15 , Rossi F15, , and at 14 years old i was one of the mechanics of a combat CL team on a world championship here in my country.
Now (some years later) i'm the support for some engines brands ............. on my leisure time
Today i've also received a new CRRCpro GF55I twin engine ....
What dilemma !!!!! I must choice between two for test .................
Regards
07-12-2010, 12:58 PM
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RE: New .90 gas engine (15cc)
But today doesn't matter:
SPAIN: FIFA WORLD CHAMPION IN SOUTH AFRICA soccer championship
YO SOY ESPAÑOL ....... Y CASILLAS TAMBIEN .........
(sorry to write in spanish) [8D]
SPAIN: FIFA WORLD CHAMPION IN SOUTH AFRICA soccer championship
YO SOY ESPAÑOL ....... Y CASILLAS TAMBIEN .........
(sorry to write in spanish) [8D]
07-12-2010, 04:40 PM
#74
RE: New .90 gas engine (15cc)
ORIGINAL: mpascual
But today doesn't matter:
SPAIN: FIFA WORLD CHAMPION IN SOUTH AFRICA soccer championship
YO SOY ESPAÑOL ....... Y CASILLAS TAMBIEN .........
(sorry to write in spanish) [8D]
But today doesn't matter:
SPAIN: FIFA WORLD CHAMPION IN SOUTH AFRICA soccer championship
YO SOY ESPAÑOL ....... Y CASILLAS TAMBIEN .........
(sorry to write in spanish) [8D]
Karol
07-13-2010, 04:20 AM
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RE: New .90 gas engine (15cc)
Yeah I was screaming for Uruguay throughout the tournament. Nobody knew they could make it to the semi finals.
So in the fianl I supported Espana. Vamo arriba Espana.
2014 seems spo far away but I hope we get there because thsi time we actually have to qualify....
Pascual, any news on that Distributor in SA? I asked at my LHS nd they do not know of anyone but I can get RCGF in 15cc and 20cc
So in the fianl I supported Espana. Vamo arriba Espana.
2014 seems spo far away but I hope we get there because thsi time we actually have to qualify....
Pascual, any news on that Distributor in SA? I asked at my LHS nd they do not know of anyone but I can get RCGF in 15cc and 20cc