Fuji BT-32 B Magneto    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> Fuji BT-32 B Magneto
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
Fuji BT-32 B Magneto - 8/9/2012 8:24 AM   
BubbasanJohn



Posts: 363
Score: 110
Joined: 7/2/2012
Last Login: 5/21/2013
From: , CA, USA
Status: online

Hi,
I have a Fuji BT-32B that I have never started.  Never started a magneto engine before.  Flipped and flipped but no ignition.  Checked the magneto gap to specs and it is set at .5mm as directed.  Is there a way to check if the mag is giving any power to the plug?  Dont have a powered starter as my other engines are battery ignition and easily start by hand flipping.  I got this engine installed in a Giant Scale Super Chipmonk that I bought from a hobby store that was going out of business for a very low price.  All is great on the plane but cant get the damn engine to fire.  Think the engine is new and has never been never started. 

Appreciate any ideas on this.  Thanks.



Hide Signatures
       Post #: 1

RE: Fuji BT-32 B Magneto - 8/9/2012 12:59 PM   
RCVFR


 

Posts: 1995
Score: 141
Joined: 2/27/2002
Last Login: 5/21/2013
From: Keller, TX, USA
Status: offline 		The magnets need to pass the coil at speed. You can't begin the prop at compression as you would a glow engine. I set my prop to begin with the magnets about 90* before passing the coil.

Good luck, it can be done.


_____________________________

Sometimes, things are exactly as they appear to be.

Hide Signatures

(in reply to BubbasanJohn)
       Post #: 2

RE: Fuji BT-32 B Magneto - 8/9/2012 1:24 PM   
karolh


 

Posts: 5626
Score: 310
Joined: 5/16/2002
Last Login: 5/20/2013
From: Mandeville, JAMAICA
Status: online 		Most magneto ignition engines need about 400 rpm to develop a sufficient spark for starting, so the prop needs a healthy flip and not the usual lame flip associated with electronic ignitions to get it going. As the previous poster indicated it is important when hand starting to develop the required prop speed before the magnet passes the sensor, as with the correct technique hand starting a magneto engine is fairly easy.

Karol

_____________________________

When inverted always remember that down is up and visa versa

Hide Signatures

(in reply to BubbasanJohn)
       Post #: 3

RE: Fuji BT-32 B Magneto - 8/9/2012 1:45 PM   
Charlie P.



Posts: 4579
Score: 192
Joined: 2/26/2003
Last Login: 5/21/2013
From: Port Crane, NY, USA
Status: online 		I've got the same engine in my Giant Super Sportster. 

You can pull the plug and observe the spark (touch the threads to the engine head to ground it - wear rubber soles - it will be easier to see indoors).  While you have the plug out mark on the hub with a permanent marker where top-dead-center is by watching the piston through the plug hole.  Now, set your prop so it is at between 2:00PM and 3:00PM when observed from the front with the piston at TDC.  I also mark the prop with a black dot so I know which side has to be up when hand-proppng.     When you hand prop you want to be in good motion before the sensor magnet fires the coil.

open the throttle to half and rock the prop with your thumb over trhe carb barrel to draw fuel through (takes 30 pumps or so).  Close the choke and set the throttle to two clicks over lowest idle.  Prop until you get a chug, then open the choke and flip again.  After the initial chug mine almost always catches on the second or third flip. 



_____________________________

Charlie P. (NY) "Gravity is weak but persistant".

AMA 747089/IMAA 30723

Hide Signatures

(in reply to karolh)
       Post #: 4

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Gas Engines >> Fuji BT-32 B Magneto
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.703RCU1