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  #71  
Old 11-15-2018, 01:47 AM
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I was reading the SDS CDI installation manual.

Be sure to remove any parts which are not positively held in place once the mags are removed. If these come loose inside the engine, severe damage or complete engine failure could result! If you’re installing a single coil pack, remove the right magneto and any gears or bearings which rely on the magneto to hold them in place

&

When replacing both mags, you need to again remove any gears, drive couplings or bearings which are normally held in place by the mag. Lycomings may be fitted with various different mag drives and parts so you need to understand what to remove.


I have a O-360-A1A (180HP). Besides removing magneto and gear/coupler (attached to Mag), installing cover, what else do I need to do? Can anyone explain.

Accessory drive has crank shaft gear, cam gear, two idlers. These drive two mags, one prop gov and vacuum pump. Oil pump is direct drive off of crank. I assume the accessory drive gears don't rely on the magnetos to be present for the Lycoming engine's. Just checking... the instructions scared me...
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Last edited by gmcjetpilot : 11-15-2018 at 02:07 AM.
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  #72  
Old 11-15-2018, 06:39 AM
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Nothing extra to remove on 4 cyl Lycs. On 6 cylinder Lycs, we have a diagram showing which parts need to be removed but they all come out through the mag holes.
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 426.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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  #73  
Old 12-13-2018, 11:58 PM
N13BN N13BN is online now
 
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Default Flywheel

I have an O-235 which uses the smaller SAE-1 prophub. I am having trouble finding the larger flywheel with that bolt pattern. Would it be possible to use the SDS automotive sensor with the smaller flywheel?

Bill Newkirk
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  #74  
Old 12-14-2018, 06:53 AM
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We had a customer with a 320 and small flywheel make his own mount on the left side of the engine and install the magnets in the fore/aft plane. You'd have to find your own positioning by scribing a circle on the flywheel face and machine a new mount. I could send you photos of what he did.
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 426.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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  #75  
Old 12-14-2018, 10:42 AM
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Default Small flywheel pics

Ross, a picture or two would be great. Once I get the flywheel figured out, the next thing will be to decide on whether to get a single or double system.
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  #76  
Old 12-14-2018, 11:55 AM
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Quote:
Originally Posted by Toobuilder View Post
CPI/Mag combo's work just fine. Slight difference in LOP timing to compensate for the retarded timing of the magneto, but thats about it.

I will emphasize again that you buy the dual hall sensor on the first go, even if you dont think you are going to add a second system down the line. Its only a few extra bucks and makes it SIGNIFICANTLY easier to add a second system if you change your mind.
From post #19
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
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  #77  
Old 12-14-2018, 02:12 PM
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Default Small flywheel pix

Here are some photos of what the other guy did:




8-32 Allen set screws go into threaded holes here, magnets go in from aft side to face the red Hall sensor

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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 426.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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  #78  
Old 12-14-2018, 02:41 PM
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Y'all think that mount is stout enough?
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Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

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"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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  #79  
Old 12-14-2018, 08:19 PM
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Quote:
Originally Posted by Mike S View Post
Y'all think that mount is stout enough?
I do believe so. Not much chance of harmonics there...
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 426.1 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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