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  Topic: Stall warning system question
Aero Siam

Replies: 2
Views: 1720

PostForum: Allegro-List   Posted: Sun Jan 03, 2021 1:18 am   Subject: Stall warning system question
My plane was laid up for a while and the hoses to the stall warning pressure switch disintegrated in the high humidity. Does the hole in the leading edge connected to the pressure switch operate on su ...
  Topic: DIY manometer to check your ASI
Aero Siam

Replies: 1
Views: 1024

PostForum: Allegro-List   Posted: Sun Jan 03, 2021 12:49 am   Subject: DIY manometer to check your ASI
The link below gives instruction to build a manometer. This article appeared in EAA Sport Aviation in August 2006.

http://www.iflyez.com/manometer.shtml

The manometer allows you to check your CA ...
  Topic: Build manual
Aero Siam

Replies: 5
Views: 4396

PostForum: Allegro-List   Posted: Sat Jan 02, 2021 9:43 pm   Subject: Re: Build manual
Hugh and Bradley
My apologies for the very late reply due to work, Covid and then I stopped using the email linked to Matronics.
Firstly, thanks for your help. Bradley, I downloaded all the manuals ...
  Topic: Build manual
Aero Siam

Replies: 5
Views: 4396

PostForum: Allegro-List   Posted: Wed Feb 05, 2020 11:26 pm   Subject: Build manual
Does anyone know if it is possible to get a copy of the build manual ?
  Topic: Fuel tank internal coating degrading
Aero Siam

Replies: 2
Views: 3903

PostForum: Allegro-List   Posted: Wed Feb 05, 2020 11:20 pm   Subject: Re: Fuel tank internal coating degrading
I borescoped the tank and didn't see evidence of flaking although there were color variations
I have never had black deposits in the filters or drain
  Topic: Fuel gauge and sender wiring
Aero Siam

Replies: 1
Views: 2809

PostForum: Allegro-List   Posted: Wed Feb 05, 2020 11:05 pm   Subject: Fuel gauge and sender wiring
Does anyone know how the fuel gauge/sender is wired ? The red/black/ are positive/negative. I presume the yellow and green is the sender but what is the single blue wire on the left side of the sender ...
  Topic: Stall warning system
Aero Siam

Replies: 1
Views: 3127

PostForum: Allegro-List   Posted: Fri Nov 15, 2019 4:32 am   Subject: Stall warning system
Hi all

Can anyone help with the pneumatic stall sensor connections ? If I suck on the orange hose, the buzzer sounds. I presume this end is connected to the hose that runs to the leading edge and t ...
  Topic: Center of Gravity Calculation (C.G.)
Aero Siam

Replies: 1
Views: 3580

PostForum: Allegro-List   Posted: Wed Sep 05, 2007 7:10 pm   Subject: Re: Center of Gravity Calculation (C.G.)
Hugh

Thom Riddle has an Excel sheet for calculating the CG on the Allegro. You can download it from my site. This only applies to his aircraft but gives a good approximation for any Allegro UL.
h ...
  Topic: Allegro 2000 Wing Tanks - Fill/Drain Procedure
Aero Siam

Replies: 4
Views: 6302

PostForum: Allegro-List   Posted: Wed Sep 05, 2007 6:44 pm   Subject: Re: Allegro 2000 Wing Tanks - Fill/Drain Procedure
Hugh

Fuel does not flow into the carbs - the floats hold the needle valves closed.

I have not had any problems with the battery after using it for 30 mins

I enclose a photo of the plumbing i ...
  Topic: Allegro 2000 Wing Tanks - Fill/Drain Procedure
Aero Siam

Replies: 4
Views: 6302

PostForum: Allegro-List   Posted: Mon Sep 03, 2007 10:48 pm   Subject: Re: Allegro 2000 Wing Tanks - Fill/Drain Procedure
Hugh
Your assumptions are correct.
The valve has 3 positions - 12 o'clock pump up, 3 normal flight, 6 drain down. I made a color coded decal for the 3 positions.
Fill the belly tank. Engine off, se ...
  Topic: vne speed
Aero Siam

Replies: 2
Views: 4497

PostForum: Allegro-List   Posted: Fri Feb 10, 2006 7:04 am   Subject: Re: vne speed
Bob

As quoted by the manufacturer, the Vne of the Allegro 2000 is 220 kilometers per hour which is 136.71 mph or 118.8 knots.

This is the design Vne and there are no variations of this.

One r ...
  Topic: Allegro Cruise Speeds
Aero Siam

Replies: 6
Views: 8616

PostForum: Allegro-List   Posted: Sat Feb 04, 2006 8:35 pm   Subject: Re: Cruise Speeds - 75% power
Thom
Thanks again for your detailed info about fuel consumption and the experiences of your friend with the Kolb. I am still working on an update to the website.

A couple more points - how is 75% ...
  Topic: Website information
Aero Siam

Replies: 2
Views: 4159

PostForum: Allegro-List   Posted: Sat Feb 04, 2006 8:12 pm   Subject: Website information
Hi Bob

Thanks for the feedback on the website.

Hopefully the Allegro list will grow quickly and we can help eachother out. Thom has a lot of useful info.

Paul
  Topic: Allegro Cruise Speeds
Aero Siam

Replies: 6
Views: 8616

PostForum: Allegro-List   Posted: Fri Feb 03, 2006 6:47 am   Subject: Re: Allegro Cruise Speeds
Thom

Thanks for the info. I will update the Performance page to incorporate the speeds for the 100hp.

Is it possible to extrapolate the figures for fuel burn at various RPM to complete the pictu ...
  Topic: Allegro Cruise Speeds
Aero Siam

Replies: 6
Views: 8616

PostForum: Allegro-List   Posted: Thu Feb 02, 2006 11:52 am   Subject: Re: Allegro Cruise Speeds
Thom

Thanks for the detailed info on the performance of the 80hp which I have incorporated into the website.

If someone has similar performance figures for the speed/RPM/fuel burn for the 100hp, ...
  Topic: Website information
Aero Siam

Replies: 2
Views: 4159

PostForum: Allegro-List   Posted: Wed Feb 01, 2006 11:36 pm   Subject: Website information
Hello everyone
Thanks to Thom and Bill for starting this forum.

I am the new dealer for the Allegro in South East Asia based in Thailand.
I have started a website www.aero-siam.com which has a ...
 
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