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08-03-2019, 05:05 AM
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Join Date: Apr 2015
Location: Ponte Vedra, FL
Posts: 1,474
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Quote:
Originally Posted by Cwood2000
Very timely string as I as scratching my head how I was going to make this work. I?ll order the kit, can someone point me to the modifications required for the snorkel?
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Excellent thread on the topic: http://www.vansairforce.com/communit...d.php?t=162451
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08-03-2019, 06:31 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by Carl Froehlich
At that point I decided my desire for the AFP system was outweighed by the added work to make it happen.
It turns out I was not the first person to find this out as several other RV-8 builders had to exchange the AFP system for the stock Precision unit. Talking with Van?s they also made it clear they were discussing the issue with Thunderbolt as well.
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There lies the challenge for the EAB vendors. The market has been greatly expanded by the availability of kits and packages which require only assembly, with little fabrication. The larger marketplace is good for everyone.
The flip side is a growing notion that there is something "wrong" when things don't just bolt together, or that fabrication is an unjustified burden.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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08-04-2019, 06:42 AM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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AFP FM200 Installation
Quote:
Originally Posted by DanH
Depends on the choice of FM-150 or FM-200.
The 150 has a flanged inlet and mimics the physical dimensions of an AvStar or Bendix RSA-5, thus there should not be cowl or snorkel issues.
The 200 is larger, and has no intake flange, just a round tube shape requiring a clamped connection. The extra length can require a cowl mod, and the flanged Vans snorkel would need modification if it's your choice of intake filtration.
The linkage kit is apparently required with the FM150, but that's not a cowl issue.
snipped
Carl, I'm curious...your fit issue was FM150 or FM-200? I'm flying an FM200 on an 8, same horizontal sump.
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Dan,
As I also have an FM200, I'd like your thoughts/comments regarding it's fit and operation on your engine. How does your air filter housing interface with the cowl? I found some photos in your "Frankensnorkel" folder. None of them deal with the cowl interface.
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08-04-2019, 08:15 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by chaskuss
Dan,
As I also have an FM200, I'd like your thoughts/comments regarding it's fit and operation on your engine. How does your air filter housing interface with the cowl? I found some photos in your "Frankensnorkel" folder. None of them deal with the cowl interface.
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I don't think the FM-150 existed when I bought the 390, so it was the FM-200 or an RSA-5 type. I wanted Airflow Performance, not Precision.
The FM-200 may not make any additional power on a 360/390, as compared to an FM-150. The intake restriction is probably the inlet flange on the sump plenum, smaller than the FM 200's throat diameter, and requiring an adapter. Regardless, it runs fine.
The unit is installed with the mixture and throttle levers on the bottom. I welded up a cable bracket which bolts to the bottom of the sump.
As noted, the FM-200 is longer than the Bendix-style units, so a snorkel was never in my plans. That was ok, as I was going to revise the cowl anyway.
http://www.vansairforce.com/communit...05&postcount=1
http://www.vansairforce.com/communit...7&postcount=11
http://www.vansairforce.com/communit...2&postcount=13
http://www.vansairforce.com/communit...9&postcount=15
http://www.vansairforce.com/communit...5&postcount=19
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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08-04-2019, 09:48 AM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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AFP FM200 Installation
Quote:
Originally Posted by DanH
snipped The intake restriction is probably the inlet flange on the sump plenum, smaller than the FM 200's throat diameter, and requiring an adapter. Regardless, it runs fine.
The unit is installed with the mixture and throttle levers on the bottom. I welded up a cable bracket which bolts to the bottom of the sump.snipped
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Yes, I have that adapter. Were you able to use the stock throttle & mixture cables supplied by Vans? If not, what length cables did you use? I like your cable heat shield, well done! How is the plastic outer covering doing? Does the heat shield protect them well?
Do you know what main jet is in your FM200?
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08-04-2019, 10:48 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by chaskuss
Yes, I have that adapter. Were you able to use the stock throttle & mixture cables supplied by Vans? If not, what length cables did you use? I like your cable heat shield, well done! How is the plastic outer covering doing? Does the heat shield protect them well?
Do you know what main jet is in your FM200?
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Cables...hmm, I've slept since then. The green ones for sure. Probably stock length, as I made an extension for one of them.
Same cables, 870 hours now.
Whatever jets Don or Kyle put in there circa 2007. Spot on.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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08-04-2019, 03:25 PM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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When checked on the flow bench at AFP, the cone filter was too restrictive. Don suggested I try to design something with a deep pleat flat filter. I did, and it flowed very well.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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08-05-2019, 12:43 PM
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Join Date: Jan 2018
Location: DFW
Posts: 65
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I purchased the stock IO390 sold by Van's, and the AvStar that Lycoming recommended in 2018 for the 14A. The Van's RV14 build drawings, photos and firewall foreword parts all fit perfect without mods. After 140 hours, this IO390 with stock Slick Mags is the smoothest running Lycoming I have ever owned.
__________________
RV14-A QB
Factory Lycoming IO390 X, HZ CS 2 Blade,
Garmin Dual G3X 460, GTN 625, A/P 507, G5
GTR 200 & 20 COMM's, 245 audio, GTX 45R
Repairman Certificate
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08-05-2019, 02:29 PM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by jdmrv7a
I purchased the stock IO390 sold by Van's, and the AvStar that Lycoming recommended in 2018 for the 14A. The Van's RV14 build drawings, photos and firewall foreword parts all fit perfect without mods. After 140 hours, this IO390 with stock Slick Mags is the smoothest running Lycoming I have ever owned.
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As always, an RV flies fine with a stock engine choice.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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