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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25781
Location: Livermore CA USA
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 Posted: Fri Sep 18, 2009 7:58 pm Post subject: CB-1002-H Governor Bracket Installation Photos...? |
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Dear Listers,
Van's turned me on to a bracket for the RV-10 called the CB-1002-H which is a bracket for mounting the governor control cable on front mounted governors.
Does anyone have some good pictures of how this bracket is installed? Maybe even a scan of the baffling installation OP sheet where the RV-10 baffling is described?
Since the IO-390 has a front mounted governor similar to the IO-540 used on the RV-10, some of these baffling pieces seem to work.
Any docs you could provide would be most appreciated!
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Blog
Engine Baffling...
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25781
Location: Livermore CA USA
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| Posted: Sun Sep 20, 2009 8:53 am Post subject: CB-1002-H Governor Bracket Installation Photos...? |
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Thank you for the info, Bill.
Looks like the McCauley governor is over 1" taller than the PCU5000. That would explain why I've been having issues with interference with the intake. I came up with a bracket yesterday after 5 tries that seems to work pretty well. On the good side, I'm now getting full throw on the governor and there is no binding whatsoever. In fact, its so free that the spring always pulls it to High RPM setting if I don't have the drag-lock on the throttle quadrant at least a little tight. Both of these are improvements over the Van's bracket. On the downside, the pushrod is just barely clearing the intake's upper inboard corner. I haven't actually mounted the intake yet, so its still too soon to tell the full impact.
Speaking of the intake, when I push it into place, its bumping into the main mounting screw busing on the alternator. I've got the standard 60a internally regulated unit from Van's. I'm estimating that I'm going to have to put about a 1/4" deep "channel" into the top right side of the fiberglass intake to get it to fit up onto the throttle body. I wonder what impact that will have on the designed "airflow" of the intake...? There is also a strut that came with the alternator that goes from the front of the alternator bracket to a mounting ear on the starter. There's no way this will fit on with the fiberglass intake in place. I wonder if I can leave it off? I've got the Skytec Inline starter and I already had to cut one of the unused lower mounting ears off of it because it completely interfered with the intake.
Man, there sure are a lot of "issues" getting the front part of this IO-390 installed... Is it really that much different in the front than the IO-360? I've read a couple of places where the IO-390 is "a bolt in replacement for the IO-360". Well, yeah, it bolts on, but the front mounted governor and slightly different placement of the alternator and starter make for a lot of custom modifications. Buyer beware.
I'll post some pictures of my governor bracket later today if I decide its really going to work.
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com
FWF Baffling and Intake...
At 06:46 PM 9/19/2009 Saturday, you wrote:
[quote]Hello Matt,
The dimensions are indicated in the in the link below. It took three attempts to get the correct prop governor drive ratio and you can certainly use my name to get specs from the latest unit they shipped to me -- excellent folks to deal with. I purchased the governor from Aero Technoligies for $1235...will provide a scanned invoice detailing P/N & S/N, if interested. A friend with a recently first-light RV-7A (BPE 390) purchased a governor from same source (& price) -- no issues whatsoever using.
<http://www.pcu5000.com/pcu5000x_spec.pdf>http://www.pcu5000.com/pcu5000x_spec.pdf
As for using stainless steel bracket...it was the strongest with the least weight and no drawing was produced. It was trial & error method when it came to deciding where to drill the holes -- will explain further should you wish to discuss...913-271-0988.
I hope you found the info on Marc's site helpfull as he really hopes that the info will be helpful to other 390 owners. BTW, I really love this engine...very smooth, powerful and FAST. You will be very happy. Allen has several hours in my plane and hopefully provided his experience.
Have a great weekend,
Bill
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