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Old Dec 29, 2009, 08:36 AM
gpw
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I'd even be willing to bet the T 1.5 would fly with a J250 ... geared of course... anybody using geared motors anymore ...???
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Old Dec 29, 2009, 11:27 AM
Trying to build & to fly
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Quote:
Originally Posted by gpw View Post
I'd even be willing to bet the T 1.5 would fly with a J250 ... geared of course... anybody using geared motors anymore ...???
current candidate for my Demoiselle n.20 is a IPS... (because it is easier to cover with a fake boxer engine than an outrunner).
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Old Dec 29, 2009, 02:22 PM
jclassic1
New Houghton, Derbyshire, UK
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Is there a pdf file for the Trainer1.5.

John
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Old Dec 29, 2009, 03:08 PM
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United States, MI, Saint Clair Shores
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I actually have a few fat geared cans in the basement looking for a home. Hmmmm
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Old Dec 30, 2009, 06:42 AM
gpw
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Tacc, That's very NICE !!!
JC, there should be around here somewhere... I'll check...
JJ, those geared can motors work pretty well still , even better with lipos ...
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Old Dec 30, 2009, 06:45 AM
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Gpw, yeah, I got all sorts of idea's for them.
I want to do a flying wing with one of my J250's.
My geared esc's are just sitting there begging to go on something.
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Old Dec 30, 2009, 11:08 AM
gpw
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Yes , i just like the way the smallish motors can turn large props ... I flew GeneBonds 4P Porky piper with a geared j250 , no problem at 48" span and lots of area ... should easily fly a T1.5 in the manner prescribed ...
That's the beauty here, use whatever motor you have ...
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Old Jan 01, 2010, 02:22 AM
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I wish there was a chart somewhere that compared all these motors and said, "This is the same as this, and this one is the same as this one...." All my motors are from HobbyKing, HobbyPartz or HeadsupRC and when someone says they're using a J250, a CDROM motor a 400 class motor or whatever, unless they say they're using part #X from Hobbyking, I have no idea what they're talking about.
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Old Jan 01, 2010, 05:29 AM
gpw
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JPop... Yes that would surely make things much easier , for now all we have to go on is the KV rating which is an indicator of the type of performance ... Other factors like wire gauge , and number of turns is usually omitted from the specs ... Max amps and suggested prop sizes help , but only a Watt meter tells for sure ...
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Old Jan 01, 2010, 10:02 AM
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Jimmy JFlyer's Avatar
United States, MI, Saint Clair Shores
Joined Dec 2008
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1 thing that has helped me with the fat cans is GWS's website. Since most of the most common cans were sold by them, it is a good way to check chart's on em. They have a great motors page and every motor they sell they have nice extensive charts showing performance #'s with amp draw, thrust, volts with all of their motors on different props.
Your basic motors, the little guys, LPS & IPS, the 100's 300's, 350's, 400's. & all the ones in between. They will show them with their various gearboxes and also give spec numbers on a lot of the smaller like 280 & 180 DD.
They do this with about every prop you can think of.
When I first started out I had all fat cans and I used this sire religiously for my numbers. Can't trust them completely for being totally accurate but at least it gave you an idea what a motor will do.

Check it out.
http://www.gwsus.com/english/product...wersystem2.htm

Fun stuff.
Now I wanna go build something.

Hope that helps, or at least gives ya something to thumb through when your bored.

Happy New Year!
Jimmy
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Old Jan 01, 2010, 12:21 PM
gpw
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Seems like every scrap of information is important when you're dealing with such a diverse collection of motors ... Those are great charts for their motors ... Although I must confess leaning heavily on GeneBonds extraordinary motor skills/know how for all the dealings we had with the wonderfully cheap and versatile j250... the original motor of the T1...
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Old Jan 01, 2010, 12:37 PM
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Jimmy JFlyer's Avatar
United States, MI, Saint Clair Shores
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Sorry to go off topic from the T1, but I love the J250. Small and easily mounted anywhere and with the oomph to have fun. I still have yet to try mounting it with a "C" gearbox for a bigger prop though. Someday.
I do however, want to use the J250 that originally powered my T1 (before my BW craze kicked in) and build my first flying wing.
A J250, smallish prop, elevons, small wing span park flyer.
Yup, great fun.
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Old Jan 02, 2010, 07:27 AM
gpw
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JJ, you need to try a Mini Horten ... perfect for j250 , geared or not ...
http://www.rcgroups.com/forums/showt...ini+horten+gpw
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Old Jan 02, 2010, 09:16 AM
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Just replied over there. Nice.
Yup, add another "GPW" original to the list.
I posted questions re: the KF strip too.
Now I am anxious to get building on that guy.
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Old Jan 03, 2010, 10:37 AM
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Italy
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T1 aerial video

I just rebuilt the fuse of my original T1 (!) with a double aim: i) as a friend of mine sometimes tells that he is attracted by airplanes, I'll try to provide him with something directly and quickly autonomously usable (for this reason I recycled also nimh batteries, which I can give him together with a charger), and ii) aerial video!.

Regarding the latter, I bought one of the keychain cameras described here (15 grams, less than one dollar per gram) and after some video with prop noise in the middle, I decided to try a pusher... guess which?
Too dark when I tried, but from video I saw my revived T1 is "wavy", nose up just a little, then down, then up... very slightly, but continuously.
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