Today's Message Index:
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1. 11:52 AM - Thinking about buying a Firefly? (Firefly2013)
2. 01:26 PM - Re: Thinking about buying a Firefly? (Vance Simons)
3. 05:10 PM - Re: Thinking about buying a Firefly? (FLYaDIVE)
Message 1
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| Subject: | Thinking about buying a Firefly? |
I was wondering if a firefly with a 447 engine plus parachute and 5 gallons of
fuel will fly a pilot that is around 225lbs. I would be taking off at a elevation
of around 80ft, airport in New Jersey.
Also which prop would be best for me, a 2 blade wood prop or a 3 blade powerfin?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=413940#413940
Message 2
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| Subject: | Re: Thinking about buying a Firefly? |
The firefly will haul up aloft. You might find the plane a bit of a little
tight fit for a guy your size but height seems a bigger issue than weight.
I am 210 5'10 and was comfortable in the firefly I sat in.
Personally I perfer a three blade over a two blade anyday. They say a two
blade will give you better climb performance. I had a three blade GSC prop
on a Phantom and switched to a two blade to achieve better climb
performance. I was sorely disappointed. Although it did climb better
vibration was more apparent and the climb performance was not worth what i
gave up in smoother operation. I went back to the three blade. I would
recommend a three blade Warp Drive over the Powerfin if you can find one.
Its the best prop I've ever ran. I have a Powerfin on a Phantom now and
there is blade movement inside the hub with everything tourqued down to
specs. I'm going to replace it with a Warp Drive once I run this engine out.
On Nov 24, 2013 11:55 AM, "Firefly2013" <jschepis@comcast.net> wrote:
> jschepis@comcast.net>
>
> I was wondering if a firefly with a 447 engine plus parachute and 5
> gallons of fuel will fly a pilot that is around 225lbs. I would be taking
> off at a elevation of around 80ft, airport in New Jersey.
>
> Also which prop would be best for me, a 2 blade wood prop or a 3 blade
> powerfin?
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=413940#413940
>
>
Message 3
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| Subject: | Re: Thinking about buying a Firefly? |
Vance:
If you consider what you, are expected from a 3 blade Vs 2 blade... Then
YES - You will be disappointed.
The advantage of a 3 blade are:
Lower Tip Speed at the same RPM
Less noise
Better Vertical Speed (VSI)
More Ground clearance
Easier to do static prop balance.
Easier to do dynamic prop balancing
The advantages of a 2 blade are:
Higher IAS
Disadvantages of a 3 Blade:
Lower IAS.
A bit scary to Hand Prop.
In the winter you collect (more) snow & ice in the spinner.
When you ding a prop you usually ding 2 or more blades of the prop.
Doing R&R of the cowling is a bit more tricky.
Even though your logic was not correct the main thing is you are happy with
the prop you chosen.
*Barry*
*=93Chop=92d Liver=94*
NJ has taken the next step. They are identifying cars with bad drivers.
You will notice some cars with a large red "R" on them. That is to
identify the drivers as "R"estricted. Restricted is just a polite way of
saying Bad Drivers. Be cautious around them.
On Sun, Nov 24, 2013 at 4:25 PM, Vance Simons <vancesimons@gmail.com> wrote
:
> The firefly will haul up aloft. You might find the plane a bit of a littl
e
> tight fit for a guy your size but height seems a bigger issue than weight
.
> I am 210 5'10 and was comfortable in the firefly I sat in.
>
> Personally I perfer a three blade over a two blade anyday. They say a two
> blade will give you better climb performance. I had a three blade GSC pro
p
> on a Phantom and switched to a two blade to achieve better climb
> performance. I was sorely disappointed. Although it did climb better
> vibration was more apparent and the climb performance was not worth what
i
> gave up in smoother operation. I went back to the three blade. I would
> recommend a three blade Warp Drive over the Powerfin if you can find one.
> Its the best prop I've ever ran. I have a Powerfin on a Phantom now and
> there is blade movement inside the hub with everything tourqued down to
> specs. I'm going to replace it with a Warp Drive once I run this engine o
ut.
> On Nov 24, 2013 11:55 AM, "Firefly2013" <jschepis@comcast.net> wrote:
>
>> jschepis@comcast.net>
>>
>> I was wondering if a firefly with a 447 engine plus parachute and 5
>> gallons of fuel will fly a pilot that is around 225lbs. I would be takin
g
>> off at a elevation of around 80ft, airport in New Jersey.
>>
>> Also which prop would be best for me, a 2 blade wood prop or a 3 blade
>> powerfin?
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=413940#413940
>>
>>
>>
>>
>>
>>
>>
>> ==========
>> ="_blank">www.aeroelectric.com
>> ooks.com" target="_blank">www.buildersbooks.com
>> et="_blank">www.homebuilthelp.com
>> et="_blank">www.mypilotstore.com
>> "_blank">www.mrrace.com
>> ="_blank">http://www.matronics.com/contribution
>> le, List Admin.
>> ==========
>> -List" target="_blank">
>> http://www.matronics.com/Navigator?RotaxEngines-List
>> ==========
>> http://forums.matronics.com
>> ==========
>>
>>
>>
>> *
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