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  #1  
Old 03-15-2019, 05:48 AM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 831
Default Intake filter size ?

Vanís intake will not fit in the James cowl for 0360 w/ FM-150. Don has an elbow for use with a cone filter that has significantly less area than Vans round filter. Dan H has commented on a rectangular filter area that he has used in a different config.
So, before I start developing a custom intake with optimized filter capacity, does anyone have any comment on just using Donís elbow with cone filter ?
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RV-3B flying w/ carb / Pmags / Catto 2b / Steam
RV-4 fastback w/ Superior XP360/AFP/G3X/CPI/Catto3b
Clinton, IN
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  #2  
Old 03-15-2019, 06:04 AM
sailvi767 sailvi767 is offline
 
Join Date: Sep 2010
Location: Charlotte NC
Posts: 921
Default

Itís a lot to wade through and perhaps a bit off topic but there is a ton of info in this thread on intakes and filters.
G

http://www.vansairforce.com/communit...=Rocket+filter
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  #3  
Old 03-15-2019, 09:16 AM
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Bob Martin Bob Martin is offline
 
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Location: Richmond, Virginia
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Default James

Larry,
Is there something wrong with the James intake setup?
I did 2 on carbs.....so I looked at the injected or forward facing FI setups.
Mybe the FM-150 is vertical and doesn't allow the forward facing setup?..
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RV-6, 0-360 Hartzell C/S, Tip up, 1150+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #4  
Old 03-15-2019, 10:26 AM
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airguy airguy is offline
 
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Location: Garden City, Tx
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Default

For vertical intakes, it might be a bit tricky. Horizontal flow works great with a K&N E-0995.
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  #5  
Old 03-15-2019, 02:44 PM
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Raymo Raymo is offline
 
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Location: Richmond Hill, GA (KLHW)
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I did the elbow setup from Don and it works great with the SJ intake. I had to make an phenolic spacer to align the filter with the intake tube but that part also came from Don.

PM if you'd like some photos. Here's one of the in-work setup.

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RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines

"The object of the game, gentlemen, is not to cheat death: the object is not to let him play."
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  #6  
Old 03-21-2019, 09:17 AM
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Larry DeCamp Larry DeCamp is offline
 
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Location: Clinton, Indiana
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Default Updated need for input

OK, I have a 90* elbow and large K&N filter from AFP. I will make a shroud to connect the SJ cowl snorkel to injector flange with cone filter inside. I have read the 2011 discussions by Bob J, Dan H and others on filters, inlets etc. This leaves three questions:
1-Does a bullet on the front of the cone filter make enough improvement to offset the potential failure of the bullet coming loose from the filter. The hazard is probably a fastener through the FI and I don't need the work if not worth it.
2-I theorized with Kyle at AFP, that the diameter of the housing did not need to clear the filter base much because you are not attempting to create a pressure recovery chamber. This could be erroneous if the velocity demand through the filter is much less than the snorkel intake velocity ?
3- I propose to build the filter housing out of Dan's glass/silicone composite. This would allow maximum flex for engine shake and only require one piece with two clamps instead of two pieces with three clamps. It is assumed that concern for Scat liner ingestion is a non-issue since the structure is pressurized in flight. However, ground run could be a different condition. Your thoughts/ experience ?
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RV-3B flying w/ carb / Pmags / Catto 2b / Steam
RV-4 fastback w/ Superior XP360/AFP/G3X/CPI/Catto3b
Clinton, IN
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  #7  
Old 03-21-2019, 09:53 AM
Bicyclops Bicyclops is offline
 
Join Date: Oct 2012
Location: LA, California
Posts: 242
Default

Quote:
Originally Posted by Larry DeCamp View Post
OK, I have a 90* elbow and large K&N filter from AFP. I will make a shroud to connect the SJ cowl snorkel to injector flange with cone filter inside. I have read the 2011 discussions by Bob J, Dan H and others on filters, inlets etc. This leaves three questions:
1-Does a bullet on the front of the cone filter make enough improvement to offset the potential failure of the bullet coming loose from the filter. The hazard is probably a fastener through the FI and I don't need the work if not worth it.
2-I theorized with Kyle at AFP, that the diameter of the housing did not need to clear the filter base much because you are not attempting to create a pressure recovery chamber. This could be erroneous if the velocity demand through the filter is much less than the snorkel intake velocity ?
3- I propose to build the filter housing out of Dan's glass/silicone composite. This would allow maximum flex for engine shake and only require one piece with two clamps instead of two pieces with three clamps. It is assumed that concern for Scat liner ingestion is a non-issue since the structure is pressurized in flight. However, ground run could be a different condition. Your thoughts/ experience ?
The E-0995 K&N filter has an integral bullet and deep pleats for more surface area than the Van's flat snorkel filter. I built a crude pressure recovery box out of fiberglass and connect it with a short piece of sceet.

Ed Holyoke

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  #8  
Old 03-23-2019, 04:12 PM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 831
Default Still need suggestions 😏

It appears a vertical induction sump is the problem. Don’s elbow then FM-150 w/ cone filter is not close to compatible with SJ RV4 snorkel. A Harley Davidson oval filter (K&N) is viable for suface area but will require fiberglass creativity. Before I CUT, does anyone have a better solution ?
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Larry DeCamp
RV-3B flying w/ carb / Pmags / Catto 2b / Steam
RV-4 fastback w/ Superior XP360/AFP/G3X/CPI/Catto3b
Clinton, IN

Last edited by Larry DeCamp : 03-23-2019 at 04:15 PM.
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