EricTheRV8er
Member
Hi folks!
First post here from a freshly minted RV-8A owner. Absolutely love the RV and am really excited to finally be a part of the RV community. I hate for my first post to be speed related, as that's probably a cliche on here, but would like any advice on what things to look for first.
My amateur hunch is the prop has at least something to do with it. It's a fixed pitch Sensenich, and I have to pull the throttle back to keep from exceeding the 2600rpm limit. That's taking off about 3-4" of available manifold pressure (from 22" to 18").
I've included some pics with data from the G3X and a photo of a second test flight data.
RV-8A, O-360 approx 200 SMOH, Sensenich FP prop, test flights done at 1500lbs.
So I guess my questions are:
1. Are these speeds unusually slow for this engine/prop combo?
2. Would switching to a prop that can run 2700rpm make the plane fly closer to book speeds being able to utilize 70-75% HP.
3. Would switching to a C/S prop improve cruise speeds? I read all the time FP and C/S cruise speeds are close... but every fast RV I've seen has C/S prop.
Any info or feedback appreciated. Thanks!
https://vansairforce.net/community/attachment.php?attachmentid=16070&stc=1&d=1632178820
First post here from a freshly minted RV-8A owner. Absolutely love the RV and am really excited to finally be a part of the RV community. I hate for my first post to be speed related, as that's probably a cliche on here, but would like any advice on what things to look for first.
My amateur hunch is the prop has at least something to do with it. It's a fixed pitch Sensenich, and I have to pull the throttle back to keep from exceeding the 2600rpm limit. That's taking off about 3-4" of available manifold pressure (from 22" to 18").
I've included some pics with data from the G3X and a photo of a second test flight data.
RV-8A, O-360 approx 200 SMOH, Sensenich FP prop, test flights done at 1500lbs.
So I guess my questions are:
1. Are these speeds unusually slow for this engine/prop combo?
2. Would switching to a prop that can run 2700rpm make the plane fly closer to book speeds being able to utilize 70-75% HP.
3. Would switching to a C/S prop improve cruise speeds? I read all the time FP and C/S cruise speeds are close... but every fast RV I've seen has C/S prop.
Any info or feedback appreciated. Thanks!
https://vansairforce.net/community/attachment.php?attachmentid=16070&stc=1&d=1632178820
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