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General control line discussion => Open Forum => Topic started by: mike londke on December 19, 2018, 11:27:33 AM

Title: JBA Engines
Post by: mike londke on December 19, 2018, 11:27:33 AM
A possible substitute for OS engines? Anyone converted one of these to CL with any luck?  http://www.kangkeusa.com/jba.htm?fbclid=IwAR2loxTot_7oaUkOb6r190vnHotbsuxj1MCfMv73Fo41RrMra5mEYEHzryE
Title: Re: JBA Engines
Post by: Robert Zambelli on December 19, 2018, 01:51:29 PM
Interesting but seem a bit heavy.
The 46 weighs 16.61 ounces - probably with the muffler, which appears massive.
But, someone (maybe Me) will buy one and try to convert it for stunt.

Bob Z.
Title: Re: JBA Engines
Post by: Curare on December 19, 2018, 01:58:28 PM
Heavy and anaemic was the general consensus when they came out.

Might be something to play with if you were given one, but I won't waste my hard eared dollars on one.
Title: Re: JBA Engines
Post by: mike londke on December 19, 2018, 02:44:17 PM
Heavy and anaemic was the general consensus when they came out.

Might be something to play with if you were given one, but I won't waste my hard eared dollars on one.
Well that's enough for me to stay away. Thanks.
Title: Re: JBA Engines
Post by: M Spencer on December 19, 2018, 06:05:32 PM
Quote
Well that's enough for me to stay away. Thanks.

But you cant start a thread on how to remove ' the Blue ' , if you dont .  S?P
Title: Re: JBA Engines
Post by: mike londke on December 19, 2018, 06:25:11 PM
But you cant start a thread on how to remove ' the Blue ' , if you dont .  S?P
I was most interested in the part where they say the have displacements from .12 and up. I was hoping they had a .25 that would be cheap and suitable for combat. I did call the USA number listed and left a message to see about .25's
Title: Re: JBA Engines
Post by: Steve Helmick on December 19, 2018, 07:14:44 PM
Hobby King (I've never ordered from them) has ASP engines, which are known to be pretty decent, so why not stick with them? The one thing all the Chinese engines seem to have in common is the destructibility of the crankshafts if you rev them too high (somewhere above stunt rpm).  D>K Steve
Title: Re: JBA Engines
Post by: mike londke on December 19, 2018, 07:43:11 PM
Hobby King (I've never ordered from them) has ASP engines, which are known to be pretty decent, so why not stick with them? The one thing all the Chinese engines seem to have in common is the destructibility of the crankshafts if you rev them too high (somewhere above stunt rpm).  D>K Steve
Hobby King has not had ASP engines suitable for CL in stock for a long time. They've been unobtanium for over a year, maybe more. Aerohobby has a supply set up for CL but they are $130. I'm not paying that for a motor that originally sold for $42. I thought the JBA might be a cheap replacement for the lack of ASP stock.
Title: Re: JBA Engines
Post by: Steven Kientz on December 20, 2018, 03:05:28 PM
I had an SK 50 on one of their RC arfs. Plenty of power, not sure about the weight. Definitely an OS clone. I've often wondered about the JBAs. Mufflers are very heavy.
Title: Re: JBA Engines
Post by: Chuck_Smith on December 22, 2018, 06:09:00 AM
Only thing I noticed in the pictures is that they appear to have the "clamp" style carb attach instead of the screws, so converting to CL will take some doing to get the NVA at the correct height.

Chuck