Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 1 of 2 12 LastLast
Results 1 to 25 of 26

Thread: BCMA engine


  1. #1

    Join Date
    May 2010
    Location
    Deer Lodge, TN
    Posts
    241
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    BCMA engine

    IÂ*haveÂ*a BCMA 40 or 44, I don't know which. Can anyone tell me how to tell. PlusÂ*where I canÂ*find info, or a manual on the engine.

    Â*I searchÂ*and I can only find old threads on it, which don't answer my questions,Â*and the web site everyone use to use,Â*seems to be down

    Â* Pat
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Om32822.jpg 
Views:	3 
Size:	84.1 KB 
ID:	1808245   Click image for larger version. 

Name:	Rm37288.jpg 
Views:	3 
Size:	64.9 KB 
ID:	1808246   Click image for larger version. 

Name:	Kp35446.jpg 
Views:	6 
Size:	80.2 KB 
ID:	1808247   Click image for larger version. 

Name:	Ib81970.jpg 
Views:	2 
Size:	67.5 KB 
ID:	1808248   Click image for larger version. 

Name:	Ep86972.jpg 
Views:	4 
Size:	78.5 KB 
ID:	1808249  

    Click image for larger version. 

Name:	Du21655.jpg 
Views:	3 
Size:	60.4 KB 
ID:	1808250  

  2. #2

    Join Date
    Dec 2005
    Location
    Auburn, GA
    Posts
    1,234
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    The BCMA is a re-branded SPE and also the same as a MT40

    If I remember right SPE is now MLD

    Any two stroke gas engine out of China will have about the same manual,

    Milton
    Contact Milton@rcextremepower.net
    Team RCeXtremePower.com

  3. #3
    KenLambert's Avatar
    Join Date
    Dec 2001
    Location
    Livingston, TX
    Posts
    848
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    It looks like a 42cc poulan
    website
    www.lambertsrc.com
    Super Tiger conversions
    thanks Kenneth

  4. #4

    Join Date
    Dec 2005
    Location
    Auburn, GA
    Posts
    1,234
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Sure does, I never looked at the pictures before posting, Just has a RCexl ignition with a BCMA label.

    The BCMA were rear mounted.

    Milton


    ORIGINAL: KenLambert

    It looks like a 42cc poulan
    Contact Milton@rcextremepower.net
    Team RCeXtremePower.com

  5. #5
    Super08's Avatar
    Join Date
    Dec 2007
    Location
    Fort McMurray, AB, CANADA
    Posts
    3,782
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    I am thinking the only thing that is from BCMA is the ignition.
    Quote: Hey, who put that tree there?
    Ultra Sport brotherhood #125
    Sig brotherhood #73
    Cub brotherhood #226

  6. #6

    Join Date
    Jan 2002
    Location
    Hesperia Michigan, MI
    Posts
    12,359
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Hey if it runs good...run it like you stold it. I am sure it is a Poulan. Capt,n
    I never met a engine I did not like !

  7. #7

    Join Date
    May 2010
    Location
    Deer Lodge, TN
    Posts
    241
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine



    Thankyouall!
    After your suggestion of it being a Poulan 42, I searched it, and it is a Poulan 42.
    I will now find a plan to a plane that I can build for it. I have no idea what yet!

    Thanks, Pat


  8. #8
    KenLambert's Avatar
    Join Date
    Dec 2001
    Location
    Livingston, TX
    Posts
    848
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    it actualy looks like one of my mufflers
    website
    www.lambertsrc.com
    Super Tiger conversions
    thanks Kenneth

  9. #9
    Lifer's Avatar
    Join Date
    Aug 2008
    Location
    Kansas City, MO
    Posts
    2,484
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    I have been using one for about 5 years. It is currently installed in a Hangar 9 150-size P-47. Best prop for that setup has been a XOAR 19x8. Not as powerful as other engines in its class but it has been trouble free. I would be happy to answer any questions that you have if it would be of any help.
    AMA #77967/CD/LM

  10. #10
    av8tor1977's Avatar
    Join Date
    May 2003
    Location
    Lukeville, AZ
    Posts
    6,131
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    I'm not sure it is a Poulan 42cc. The Poulan 42cc had the ignition coil mounted in the chain saw; not on the engine. Looks like this engine has mounts for a coil on the cylinder. It might be a Poulan 46cc.

    AV8TOR
    If it is not SCARY, it is NO WHERE NEAR powerful enough!!
    All R/C planes have expiration dates---> It's just not printed on them anywhere!

  11. #11
    Ernie Misner's Avatar
    Join Date
    Jul 2002
    Location
    Tacoma, WA
    Posts
    4,991
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Is it a simple piston port or is there a reed block in there?

  12. #12
    av8tor1977's Avatar
    Join Date
    May 2003
    Location
    Lukeville, AZ
    Posts
    6,131
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    It is piston ported. Here's a pic of a 42cc.

    AV8TOR
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Bz76807.jpg 
Views:	1 
Size:	70.6 KB 
ID:	1809205  
    If it is not SCARY, it is NO WHERE NEAR powerful enough!!
    All R/C planes have expiration dates---> It's just not printed on them anywhere!

  13. #13
    KenLambert's Avatar
    Join Date
    Dec 2001
    Location
    Livingston, TX
    Posts
    848
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    thats the old style 42 they changed them for the EPA on the newer models. The 46cc has an oval carb adapter that slides on, but at this point it could be anything they all been sold and bought by so many companys.
    website
    www.lambertsrc.com
    Super Tiger conversions
    thanks Kenneth

  14. #14

    Join Date
    May 2010
    Location
    Deer Lodge, TN
    Posts
    241
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Thanks guy's!

    Here is some more pictures of it.

    The exhaust has slots with nuts behind, to hold themuffler on.

    What is the tubethat was added to the diaphragm cover for?

    I got this engine in a trade, and I guess he didn't know what it is either.

    Pat
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Hf99502.jpg 
Views:	1 
Size:	75.4 KB 
ID:	1809296   Click image for larger version. 

Name:	Fa87221.jpg 
Views:	4 
Size:	84.9 KB 
ID:	1809297   Click image for larger version. 

Name:	Kp33370.jpg 
Views:	3 
Size:	72.8 KB 
ID:	1809298   Click image for larger version. 

Name:	Vt56703.jpg 
Views:	1 
Size:	92.7 KB 
ID:	1809299  

  15. #15

    Join Date
    Jan 2002
    Location
    Hesperia Michigan, MI
    Posts
    12,359
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    The tube is so you can run a rubber line too the inside of the airplane to a place with dead air. Not always needed. For right now get it on a test stand or airplane to test run itand learn how to start & run it. Also getting the carb set toothe right basic settings so it will run right. Capt,n
    I never met a engine I did not like !

  16. #16
    Moderator w8ye's Avatar
    Join Date
    Dec 2001
    Location
    Shelby, OH
    Posts
    37,022
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    It might be a Homelite 45?

    Doesn't really matter as long as it runs.
    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  17. #17
    Lifer's Avatar
    Join Date
    Aug 2008
    Location
    Kansas City, MO
    Posts
    2,484
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    BCMA was run by a guy named Adam who lived in Colorado. He eventually gave up. The engines are made by SPE, and are 43cc. They are currently sold by Cermark and Chief RC.
    AMA #77967/CD/LM

  18. #18

    Join Date
    May 2010
    Location
    Deer Lodge, TN
    Posts
    241
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine


    ORIGINAL: av8tor1977

    It is piston ported. Here's a pic of a 42cc.

    AV8TOR


    It looks like you have yours on a stik. That is what I was thinking of building for mine. What inch wing do you have? What inch wing would you sudjest to use?
    I'm going to scratch build mine so any size is ok. I'm thinking maybe a 70-80" wing. I have the plans for the 101" Bud Nosen big stik, that I could shrink down, or I also have the the plans for a 50" sweet & low, that I could blow up. but I think I'd rather have a shoulder wing.

    Pat

  19. #19

    Join Date
    May 2010
    Location
    Deer Lodge, TN
    Posts
    241
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    After looking at pictures of the SPE, they arenot the sameengines asmine.

    Pat



    ORIGINAL: Lifer

    BCMA was run by a guy named Adam who lived in Colorado. He eventually gave up. The engines are made by SPE, and are 43cc. They are currently sold by Cermark and Chief RC.

  20. #20

    Join Date
    May 2010
    Location
    Deer Lodge, TN
    Posts
    241
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    I kinda agree, But! If I hang it on the nose of a stik, and someone say's Hey! whats the engine your running, and I say a Poulan 42, and someone goes, No it's not! it's a Homelite 45, or something else,don't you know what you have!, I don't want to say no I don't know!

    Other wise I could care less. Like you say, as long as it runsgood, it'll fly a plane.
    I don't care what it is, I just want to know.

    20 some years ago I had a Homelite on a GP100" Cap 21, but it looked different. I don't remember what size it was now.

    Pat


    ORIGINAL: w8ye

    It might be a Homelite 45?

    Doesn't really matter as long as it runs.

  21. #21
    Moderator w8ye's Avatar
    Join Date
    Dec 2001
    Location
    Shelby, OH
    Posts
    37,022
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    The fact is . . . The engine was part of a trade and you're not sure what it is? And what is important is that it flies the plane and you are having fun.

    The Poulan and Homelites like this were made different 10-15 yrs ago than they are now. These brands are still made today but they are a different design. In fact, now the Poulan, McCulloch, and Homelite in 46cc are identical except for the color.

    Some important identifying features of the engine are that it has what's called a bolt on carb and was not one that had the carb mounted in the chainsaw case with a rubber bellows connecting the carb to the engine like they are today. The other important feature is that the coil originally fastened to the cylinder on this engine and was not mounted in the chainsaw case.

    Some other facts about the engine was that these designs were typically from 33 to 50 cc. What rpm it turns what prop might be the best judge of what size it is?

    There were probably more 42cc engines made than the other sizes?
    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  22. #22
    Moderator w8ye's Avatar
    Join Date
    Dec 2001
    Location
    Shelby, OH
    Posts
    37,022
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Here is a picture of a Poulan 46 and take notice that it has an adapter on the intake because this engine originally had a rubber boot to the carb. The carb was not a bolt on one.









    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  23. #23
    Moderator w8ye's Avatar
    Join Date
    Dec 2001
    Location
    Shelby, OH
    Posts
    37,022
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Here are a couple pictures of a Poulan 42. Notice the bolt on carb and magneto




    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  24. #24
    Moderator w8ye's Avatar
    Join Date
    Dec 2001
    Location
    Shelby, OH
    Posts
    37,022
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Later model Homelite 45 with the rubber boot type intake. There was a slightly earlier one with a bolt on intake




    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  25. #25
    Moderator w8ye's Avatar
    Join Date
    Dec 2001
    Location
    Shelby, OH
    Posts
    37,022
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: BCMA engine

    Studying all the pictures, I think your engine is a Poulan 42.

    They should pull a 18 X 10 around 7200?

    It is difficult to identify these as they changed little things from year to year?
    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261


Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 02:54 AM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.