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Old 02-22-2021, 11:18 AM   #471
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Re: Converting EDF to turbines


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Thanks

Dave are you putting the X45 in it? did you buy a Hab kit for pipe and mount?

Angus

X45 with a Grumania pipe.
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Old 02-22-2021, 11:51 AM   #472
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Re: Converting EDF to turbines

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Finished my Avanti Mini this weekend, came in at 8.3lbs dry which is the same dry weight as a larger battery EDF set up. Put JP brakes on it and have a 800ml tank should be good for 5-6min.

Angus
Looks good. That poor tank looks tiny compared to the CM Jets tank I have in mine. I think mine is too big actually but came with the airframe so I left it.

I should weigh mine to see where I'm at compared to yours. Pretty similar set up.

Cheers,

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Old 02-22-2021, 08:08 PM   #473
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Re: Converting EDF to turbines

The tank is actually 24oz 700ml, I couldn't bring myself to spending =/- $200 to get one of those nice tanks, I'm into this one for $20. Flights will certainly be shorter but I'm OK with that.

here is the actual finished inside. no lead added, batteries balance it out perfectly.

Am
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Old 02-22-2021, 08:40 PM   #474
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Re: Converting EDF to turbines

Ya, I was looking at one of the CMJ tanks thinking "ooh cool, 1.2 litre capacity", then I was thinking that's also 2.16lbs of fuel, almost a full pound more on take-off than using a 700ml tank. I'm willing to sacrifice a few minutes of flying time to shed that kind of weight.
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Old 02-22-2021, 11:46 PM   #475
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Re: Converting EDF to turbines

from Dean’s post #74...re his FW Avanti/X-45 conversion

“The final pic shows the front end all buttoned up. 2- 2200 mah 7.4 volt packs / regulator, receiver, pump, turbine HUB. It needed 3.5 oz of lead in the nose cone to attain CG. I am using a weighted felt pick up in the 800 cc tank and going direct to the pump. No UAT or secondary tank in this build. Dry weight came out to 2500 grams. The EDF version weighs 2650 grams with a 6S 5000mah battery. So a bit heavier on take off with full fuel but about the same weight or less on landing.[/QUOTE]

1. Anybody have an idea why my FW Avanti with X-45, HAB pipe, HAB tank, HAB clunks, 2x GensAce 2200 2S packs...is nearly 200 g heavier than Dean’s? Heavier foil? rx? ...but 200 g?

2. Not sure what most people do with the monitor...in the model?

Thanks for everyone’s patience answering all my questions to date and thanks in advance for any info on the questions above...
Bill

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Old Today, 08:31 AM   #476
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Re: Converting EDF to turbines

Feeling a sense of accomplishment at getting all the bits in my FW Avanti turbine conversion. Would appreciate any thoughts re my layout from the experienced eyes in the group.(picture below)
Temporarily, I have a pink foam block supporting the fuel shut off valve. Will kero destroy pink foam?
Still puzzled by the Porky Pig weight readings and at a loss to understand why my model is weighing in nearly 200g more than Dean’s almost identical model in post#74...thoughts?
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Old Today, 09:28 AM   #477
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Re: Converting EDF to turbines

I see you used tygon which is fine but you may want to consider placing a barb on the brass tubes or the very least a safety wire. As for weight, dont sweat it. 7 oz will not be an issue at all with this bird. It could be simply the base weight was heavier to begin with. Your CG may be a bit forward than mine which after a few flights you may find removing some weight helpful. Lastly, my " fish scale ' or yours may be both a little off. At the end of the day the aircraft will fly ever bit as well as mine.
There are all sorts of foam....test a small piece of yours with fuel. OR....just brush on some epoxy on it as a sealer.

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Old Today, 10:37 AM   #478
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Re: Converting EDF to turbines

Quote:
Originally Posted by Wingnutz View Post
from Dean’s post #74...re his FW Avanti/X-45 conversion

“The final pic shows the front end all buttoned up. 2- 2200 mah 7.4 volt packs / regulator, receiver, pump, turbine HUB. It needed 3.5 oz of lead in the nose cone to attain CG. I am using a weighted felt pick up in the 800 cc tank and going direct to the pump. No UAT or secondary tank in this build. Dry weight came out to 2500 grams. The EDF version weighs 2650 grams with a 6S 5000mah battery. So a bit heavier on take off with full fuel but about the same weight or less on landing.
1. Anybody have an idea why my FW Avanti with X-45, HAB pipe, HAB tank, HAB clunks, 2x GensAce 2200 2S packs...is nearly 200 g heavier than Dean’s? Heavier foil? rx? ...but 200 g?

2. Not sure what most people do with the monitor...in the model?

Thanks for everyone’s patience answering all my questions to date and thanks in advance for any info on the questions above...
Bill[/QUOTE]

That’s because Dean fills his with magic pixie dust. They don’t call him “the professor” for nothing....

PaulD
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Old Today, 12:55 PM   #479
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Re: Converting EDF to turbines

S[QUOTE=

2. Not sure what most people do with the monitor...in the model?

Bill[/QUOTE]
If it has the micro SD card in it , it can record the turbine run data in case you have an airborne flameout or whatever . Otherwise unnecessary weight but not much.
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Old Today, 01:32 PM   #480
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Re: Converting EDF to turbines

Dean, Paul, Len,
Thanks for the support. Will test the foam, anchor the tygon to the brass tubes, check the monitor for a mini SD port and do a google search for magic pixie dust!
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