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January 18th, 2010, 06:27 PM
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www.ScottLott.com
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Join Date: Jan 2009
Location: Aloha, OR
Posts: 839
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I agree with Bhawken. You have to remember that I designed those planes for the Microjet so when you put a bigger motor on it you've got to move the battery further forward, maybe even on the side of the nose bottom. Either way, only a tail heavy plane would flat spin. Thanks!
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January 19th, 2010, 12:47 AM
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Member
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Join Date: Aug 2009
Location: Deltaville, Virginia
Posts: 60
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@bhawken that looks very similar to what mine did, but way more violent.
@ anyone By adding a bigger motor does that change the actual balance point on the model? I marked the CG on the plane as I was cutting it out and I have been balancing at that point
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January 19th, 2010, 01:30 AM
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Member
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Join Date: Nov 2009
Location: Fairborn, OH
Posts: 72
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Quote:
Originally Posted by flydrive rc
@bhawken that looks very similar to what mine did, but way more violent.
@ anyone By adding a bigger motor does that change the actual balance point on the model? I marked the CG on the plane as I was cutting it out and I have been balancing at that point
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I don't think it is accurate to say that it changes the "balance point," only that by adding more weight to the rear of the CG, you have to compensate by adding more weight to the front. In addition, with this added weight, you are increasing the wing loading, which can contribute to the "violence" of any problem. Do you have another smaller (lighter) motor lying around you can test this airframe with? If you can use a trusted set-up (engine, esc, batt.) that you've used before and install it, this should tell you if it is only a CG problem, or if there is something else wrong. Good luck. 
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January 19th, 2010, 01:34 AM
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www.ScottLott.com
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Join Date: Jan 2009
Location: Aloha, OR
Posts: 839
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The heavier the wing loading, the more sensitive the Center of Gravity becomes. If you increase the weight of any of these planes, I would fly the plane first slightly nose heavy to be safe. Thanks!
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January 19th, 2010, 09:34 PM
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Member
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Join Date: Aug 2009
Location: Deltaville, Virginia
Posts: 60
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Scott what is the AUW of your F35?
(I think it's supposed to be around 10 ounces, but I can't remember)
My coroplast F-35's are HEAVY and they only fly at 100% throttle any less they come crashing down  But I tell you what seeing that little F35 with a Super Mega on the back of it will blow your mind. It's a handful but it draws a crowd at the field!!!
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January 19th, 2010, 11:58 PM
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Senior Member
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Join Date: Nov 2009
Location: lutcher LA
Posts: 260
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coroplast such a funny word
Quote:
Originally Posted by flydrive rc
Scott what is the AUW of your F35?
(I think it's supposed to be around 10 ounces, but I can't remember)
My coroplast F-35's are HEAVY and they only fly at 100% throttle any less they come crashing down But I tell you what seeing that little F35 with a Super Mega on the back of it will blow your mind. It's a handful but it draws a crowd at the field!!! |
__________________
bailey
cs-aka lonewolf57 / crazy white guy.
"do a horizontal barrel roll"  
"happy crashing"
" it takes a special kind of person to total a plane by running into a cloud"
youtube channel: baileythedudeman57
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January 20th, 2010, 08:24 AM
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Senior Member
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Join Date: Jul 2009
Location: Lakeland Florida
Posts: 182
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Quote:
Originally Posted by flydrive rc
@bhawken that looks very similar to what mine did, but way more violent.
@ anyone By adding a bigger motor does that change the actual balance point on the model? I marked the CG on the plane as I was cutting it out and I have been balancing at that point
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I created a thread "Useful CG Information"
http://www.rcpowers.com/forum/showthread.php?p=22020#post22020
It has lots of useful information about CG. Check it out.
Last edited by Luke Warm; January 21st, 2010 at 07:57 AM.
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January 20th, 2010, 08:35 AM
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Senior Member
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Join Date: Jul 2009
Location: Lakeland Florida
Posts: 182
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Quote:
Originally Posted by flydrive rc
Scott what is the AUW of your F35?
(I think it's supposed to be around 10 ounces, but I can't remember)
My coroplast F-35's are HEAVY and they only fly at 100% throttle any less they come crashing down But I tell you what seeing that little F35 with a Super Mega on the back of it will blow your mind. It's a handful but it draws a crowd at the field!!! |
Posted at the first page of this thread: Weight: 10-12 oz (280-340 g)
You should have better performance than that, maybe your prop is on backwards or the CG off.
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January 27th, 2010, 12:16 PM
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Junior Member
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Join Date: Dec 2009
Posts: 5
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Hey Scott, I like what you guys are doing for all us hobbiest, Good stuff , but I was wondering if you might make a pdf for the F-35 that dave was using on his first test flight of vtol? I would love to have a jet that size.
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January 27th, 2010, 04:41 PM
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Duckeron MOD (aka "Dred")
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Join Date: Jan 2009
Location: Ohio, USA
Posts: 742
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Quote:
Originally Posted by RCRoge
Hey Scott, I like what you guys are doing for all us hobbiest, Good stuff , but I was wondering if you might make a pdf for the F-35 that dave was using on his first test flight of vtol? I would love to have a jet that size.
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Hmm, I don't think Scott will make a PDF for the F-35 of THAT size... though I could be wrong...
He's currently working on his own version of the F-35 VTOL almost the same size as Dave's.
We usually aim to sell planes that require only 1 Microjet motor, because they are easier for novices to make / fly.
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