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Old May 13, 2006, 07:13 AM
Tree Fodder
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Mount Holly Burlington, New Jersey, United States
Joined Sep 2004
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Quote:
Originally Posted by Visc
CTD

Is there a product out there that works well as a filler for foam???

Visc
Depends on what you're filling, but there are 3 good ones:

1) There are very light-weight spackles. "Patch-N-Paint" from Home Depot, and Red Devil brand makes one available elsewhere. It's feather light, great for filling shallow areas.

2) Gorilla Glue, or other-brand polyurethane glue. Pre-mix it with 25 to 30% water until it begins to foam. Pour off any excess water, coat the area to be filled, cover with plastic wrap, and WEIGHT IT DOWN TIGHTLY. It will expand many times original volume and fill gaps. Great for imbeddded things like motor mounts, and cf spars.

3) Spray foam "sealants" like "Dap-tex", several different kinds. Messy to work with though, but good for really large areas that need filling with something light-weight. Some are stiff, some remain flexible, read the can.

Hope that helps;

-MB
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Old May 13, 2006, 09:10 AM
UH-60 Blackhawk Mechanic
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United States, TN, Clarksville
Joined Feb 2004
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I am not sure of the C rating of the packs, I think there around 15 or 20, I'm pretty sure there 20. he is a dealer for alot of the battery pack distributers. he also is wondering about outrunners? any suggestions? if he was to get the warp4 or the 450th what ducted fan should he use? sorry for the novice questions he always comes to me needing help on what motor to use for what and all those technical questions but I'm a heli expert, not an airplane expert I appreciate the help guys. also, is there a formula out there I can apply towards airplanes so I can find out what motor with what prop will work for what size aircraft... thanks again guys.

Brandon
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Old May 13, 2006, 09:42 AM
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Ducted fan for the Warp motor including adapters :

http://www.aircraft-world.com/shopexd.asp?id=2795
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Old May 13, 2006, 10:11 AM
Foamsmithing forever!!
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Sugar Grove, Il.
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Visc,

MB answered your question, I can't think of any other fillers. I think he covered it pretty well. After running the short fins, I'd never go back to the stock ones.

CTD
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Old May 13, 2006, 10:55 AM
UH-60 Blackhawk Mechanic
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United States, TN, Clarksville
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that looks sweet. so with that ducted fan, a warp4 and a 3S lipo do you guys think this thing would perform as well as one with a prop? or would it be better with the warp4 and a prop? thanks.

Brandon
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Old May 13, 2006, 11:20 AM
Foamsmithing forever!!
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Sugar Grove, Il.
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Fans will not out perform a prop. At least not without a bushel basket of money to throw at motors and bastteries. One guy here put a 1000 Watt set up in his Stryker and it was fast, but it cost a ton of money to do, and the battery was so heavy he had to bungee launch it.

CTD
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Old May 13, 2006, 02:25 PM
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1000 Watt?!? ouch.. let's fly a month income..
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Old May 13, 2006, 02:43 PM
Foamsmithing forever!!
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There was a guy that my buddy saw at the air field who was running a plane [he didn't know what kind of plane it was.]with 6 EDF's putting out 1500 watts each. He was running 12S 7000 Mah packs!!!!! Talk about a months income!! That sounds more like a years income!!

CTD
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Old May 13, 2006, 03:38 PM
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To pay a year income for a plane you only can see after bungee 0,04 sec is pretty much.
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Old May 13, 2006, 07:36 PM
UH-60 Blackhawk Mechanic
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United States, TN, Clarksville
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holy crap, thats crazy. I guess it would be better to stick a prop on for performance. thanks for the help. I think a warp4 with a what? 6X4 would work good on 3S? thanks again guys.

brandon
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Old May 14, 2006, 02:12 AM
It's a climb'n!
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MB

Thanx for the suggestions I'll be sure to check them out.

CTD

The stock fins are to flimsy and too high in profile for the 70mph+ versions.

Visc
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Old May 14, 2006, 02:28 AM
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@Helifrek :

a APC 400 EP PROP 4.75x4.75 on a Hyperion SHORT 3.0mm Collet ADAPTER M5 will do
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Old May 15, 2006, 07:52 AM
Too fast for you!!
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Thief River Falls
Joined May 2005
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Hey parkzonekid, I just realized that i have the heli version of the 450th, the one with the 3.2mm axle. That explains why i can never get any of my 3mm prop adapters on it. I have searched everywhere and i cant find a 3.2mm prop adapter. Any ideas?

Ohh, and about the qestion about motor and props. Usually manufacturors will have some info posted on how the motor will perform. Unfortuanetly until the manufactururs settle on a standard way of labeling mtors, every motor is going to be different and can get very confusing. In fact I dont even know how to buy the right motor.

But i do know about props. With props it is basicly the larger diameter: the more thrust, The larger pitch:the more speed. To get more speed you need high rpm and high pitch ex: 5x5@ 25000. For more thrust it is generally a lower rpm with a high diameter ex: 8x4 @15000. Or something like that. So if you want more thrust you get a prop with a larger diameter, BUT! if you want to keep the amps the same you have to get a smaller pitch. Vise versa to get more speed
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Old May 15, 2006, 08:35 AM
Brunswick, Ohio
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This will fit.

Jim
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Old May 15, 2006, 12:34 PM
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San Jose, CA
Joined Mar 2006
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[QUOTE=stryker_111] I have searched everywhere and i cant find a 3.2mm prop adapter. Any ideas?

rcworldofplanes.com
for $3.95, knurled to grab prop better
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