Today's Message Index:
----------------------
1. 06:40 PM - spinner to prop clearance (Vince-Himsl)
2. 07:34 PM - Re: spinner to prop clearance (Dick DeCramer)
3. 09:24 PM - Re: Re: spinner to prop clearance ()
Message 1
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| Subject: | spinner to prop clearance |
Hello,
The plans say 1/16 to 1/8=94 gap clearance between spinner and prop
(catto
three blade)
My gap(s) are more like 1/8=94 to =BC=94
Are we talking aesthetics here or safety/performance?
Anyone per chance with the same gap (gaffe) and prop?
Thanks
Vince H. Finish
RV8-VSB
Estimated time of completion: 6 years ago.
Message 2
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| Subject: | spinner to prop clearance |
Vince...
Most appear to be going for tighter clearances but I enlarged mine to 7/16" and
glad I did. The cowl is difficult enough to get off & on without scratching
the paint now without it being still tighter. I think the feeling here is some
efficiency (performance), mostly aesthetics, but not much maintainability.
My prop was a Sensenich FP but since converted to Hartzell CS.
Another popular close fit is around the tires on wheel fairings to improve aerodynamics
but I have seen many chaffed tires. I tried for a "thumb width" around
the tire and even enlarged it later to allow the tires room to flex. I did
chose ease of maintenance over a couple knots I built and this has served me
well.
Dick DeCramer
N500DD RV6
200 hours
Northfield, MN
----- Original Message -----
From: Vince-Himsl
Sent: 4/27/2007 8:49:53 PM
Subject: RV8-List: spinner to prop clearance
Hello,
The plans say 1/16 to 1/8 gap clearance between spinner and prop (catto three blade)
My gap(s) are more like 1/8 to
Are we talking aesthetics here or safety/performance?
Anyone per chance with the same gap (gaffe) and prop?
Thanks
Vince H. Finish
RV8-VSB
Estimated time of completion: 6 years ago.
Message 3
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| Subject: | Re: spinner to prop clearance |
Seven years ago the HRII (IO-540) was ready for the cowl/spinner clearence question.
I ask on line and was advised to leave at least 1/4 at the top & 7/16 at
the bottom so when the "sag" occured they would even out. This was reportedly
because of the "extra" weight of six cylinders & longer monment. Well six years
later I'm still waiting for the "sag" to even up the gap. Not sure how many
1/1000th's of a MPH we lost because of the gap BUT take a look at the spam cans
(Comanche's) gap & SMILE. KABONG Do Not Archive
>From: Dick DeCramer <diesel@rconnect.com>
>Date: 2007/04/27 Fri PM 09:33:43 CDT
>To: rv8-list@matronics.com
>Subject: RE: RV8-List: spinner to prop clearance
>Vince...Most appear to be going for tighter clearances but I enlarged mine to
7/16" and glad I did. The cowl is difficult enough to get off & on without scratching
the paint now without it being still tighter. I think the feeling here
is some efficiency (performance), mostly aesthetics, but not much maintainability.
My prop was a Sensenich FP but since converted to Hartzell CS.Another popular
close fit is around the tires on wheel fairings to improveaerodynamics but
I have seen manychaffed tires. I tried for a "thumb width" around the tire
and even enlarged it later to allow the tires room to flex. I did chose ease ofmaintenance
over a couple knotsI built and this has served me well. Dick DeCramerN500DD
RV6200 hoursNorthfield, MN----- Original Message ----- From: Vince-Himsl
To: rv8-list@matronics.comSent: 4/27/2007 8:49:53 PM Subject: RV8-List:
spinner to prop clearance
>
>Hello,
>
>The plans say 1/16 to 1/8 gap clearance between spinner and prop (catto three
blade)
>
>My gap(s) are more like 1/8 to
>
>Are we talking aesthetics here or safety/performance?
>
>Anyone per chance with the same gap (gaffe) and prop?
>
>Thanks
>Vince H. Finish
>RV8-VSB
>Estimated time of completion: 6 years ago.
>
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