Today's Message Index:
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1. 12:49 AM - Re: What did you do with you europa this week ending 14/03/25 (John Wighton)
2. 01:20 AM - Re: What did you do with you europa this week ending 14/03/25 (Area-51)
3. 01:28 AM - Re: What did you do with you europa this week ending 14/03/25 (Area-51)
4. 02:47 AM - Re: Europa-List Digest: 1 Msgs - 03/13/25 (John Archer)
Message 1
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| Subject: | Re: What did you do with you europa this week ending 14/03/25 |
Sounds great. But why have the speeds changed? Changing from 80 to 100 hp should
not affect any speeds. Please explain.
--------
John Wighton
Europa XS trigear G-IPOD
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Message 2
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| Subject: | Re: What did you do with you europa this week ending 14/03/25 |
The 80hp uses a 2.27:1 reducer, the 100hp uses a 2.43:1 reducer. So the engine
rpm is higher on the 100hp for the same prop rotation speed. The prop was not
repitched. So the 100hp redlines well before the propeller load can prevent engine
rpm runaway. Its like putting a jensen interceptor motor into a morris minor
without changing the diff ratio or rear tyres to suit
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Message 3
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| Subject: | Re: What did you do with you europa this week ending 14/03/25 |
Another 2hrs in the air today proofing the engine swap. Smooth as a button... Temps
rock solid at 80/80 the whole way on 43% power; a real joy to fly... signing
AF out for unrestricted flight op's
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Message 4
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| Subject: | Re: Europa-List Digest: 1 Msgs - 03/13/25 |
I am glad you are happy with the results Area 51! I agree, the increased power
is appreciable especially getting through the am I flying or still on the ground
phase which can be less than confidence inspiring sometimes, not to mention
the increase in cruise speed.
I hope you calculated the extra drag that opening the lower cowling had on the
aerodynamics prior to that ?
> On 14 Mar 2025, at 07:33, Europa-List Digest Server <europa-list@matronics.com>
wrote:
>
> *
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> =================================================
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> Total Messages Posted Thu 03/13/25: 1
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> Today's Message Index:
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>
> 1. 02:52 AM - What did you do with you europa this week ending 14/03/25
(Area-51)
>
>
>
> ________________________________ Message 1 _____________________________________
>
>
> Time: 02:52:23 AM PST US
> Subject: Europa-List: What did you do with you europa this week ending 14/03/25
> From: "Area-51" <goldsteinindustrial@gmail.com>
>
>
> Check flights today on the 100hp 912ULS Classic install... Nothing short of a
total
> success...
>
> First flights this morning and with my innate skepticism was expecting the entire
> unit to go "BANG!!!"; but it did not... instead it purred this way, and then
> it purred that way for about 30 minutes... then i brought it in a little clumsily
> due to the need to relearn new alternate engine speeds... a good visual
> scrutiny revealed not one thing requiring attention; so a cup of tea was created
> and consumed before going up again for an hour, and it certainly got up off
> the deck and climbed straight through the normal 80hp flat moment of excess undercarriage
> flaps drag; the aircraft actually just got out in front of me to
> the point i was saying "i better retract the undercarriage now before i hit 80kt;
> like right now!"... Take offs are a bit more exciting at the moment as i get
> accustomed to the new amount of swing as the tail gets up, or blipping of the
> throttle on rounding out.
>
> This has been a direct swap, retaining 80hp starter motor, exhaust, cooling...
> the only change has been raising the lower lip of the bottom cowl 1" away from
> the fuselage. Running temps at cruise so far are 90C/100C, and 80/80 on approach
> decent... The prop needs repitching due to ratio changes of the 100hp reduction
> drive.
>
> 181 will never be having an 80hp unit reinstalled... more flying tomorrow...
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=515307#515307
>
>
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