First Pusher Jet

[Tyrant Blaze]

Hi Everyone,

I have been flying for about 2 years and feel pretty comfortable with ailerons...soooo onto the next step.

I have seen some really cool scratch built pusher jets on the forums and they look like serious fun. I am also keen to try my hand at building with DEPRON, I have several sheets at hand ready. Does anybody have plans for a pusher jet thats more suitable for a beginner and not too difficult for a first time scratch build

Thanks

Chris

[CHELLIE]

Originally Posted by Tyrant Blaze

Hi Everyone,

I have been flying for about 2 years and feel pretty comfortable with ailerons...soooo onto the next step.

I have seen some really cool scratch built pusher jets on the forums and they look like serious fun. I am also keen to try my hand at building with DEPRON, I have several sheets at hand ready. Does anybody have plans for a pusher jet thats more suitable for a beginner and not too difficult for a first time scratch build

Thanks

Chris

Hi Chris here you go, have fun, Chellie

I think you might like the blue one better

http://www.wattflyer.com/forums/show...124#post265124

RC Pusher Jet

[CHELLIE]

#6662 CHELLIE
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I had some fun sunday, i put one of those 1800kv motors on my pusher jet, its that HK $6.95 motor, with a 6x6 prop and flew it, its pulling 20 amps and 210 Watts the plane weight is 13.4 oz, so thats about 240 Watts per Lb. it hauled @$$ LOL ,use WOT in short 5 second burst, the motor can handel the abuse, because it has thick windings in it, I use a 7x6 gws sf prop cut down to a 6x6, a 2408-21 motor works very well to on 3 cells, with a 1300mah 3 cell lipo 20 to 30 C lipo and a 30 amp esc.

http://www.hobbycity.com/hobbycity/s...ss_Micro_Motor

[CHELLIE]

http://www.wattflyer.com/forums/showthread.php?t=39733

[Tyrant Blaze]

Hi Chellie,

thanks very much that looks cool (in blue of course), I looked at the thread and its very helpful, you make it look easy. How many DEPRON jets have you made?

One more question, I have an A2826-10 1400Kv motor do you think that will be suitable for this jet?

Thanks

Chris

[Alpea42]

If you want one that looks like a real jet and is easy pick Jetsetts X31. My son built one in a day. Do it as a pusher and don't do the thrust vectoring http://www.rcgroups.com/forums/showthread.php?t=509363 Jetset44 has many cool designs at Parkjets. com. Between my son and I we've built a half a dozen of his designs. Chellies profile bobcat is a easy one I agree.

[CHELLIE]

Originally Posted by Tyrant Blaze

Hi Chellie,

thanks very much that looks cool (in blue of course), I looked at the thread and its very helpful, you make it look easy. How many DEPRON jets have you made?

One more question, I have an A2826-10 1400Kv motor do you think that will be suitable for this jet?

Thanks

Chris

Hi Chris That will work, get a stick mount for it, or you can just make a flat motor mount from plywood and bolt the motor on, I have built a lot of planes jets and reg planes, have been in this hobby for over 40 years and Alpea42 has seen and flown a lot of my planes

[Tyrant Blaze]

Originally Posted by Alpea42

If you want one that looks like a real jet and is easy pick Jetsetts X31. My son built one in a day. Do it as a pusher and don't do the thrust vectoring http://www.rcgroups.com/forums/showthread.php?t=509363 Jetset44 has many cool designs at Parkjets. com. Between my son and I we've built a half a dozen of his designs. Chellies profile bobcat is a easy one I agree.

Thanks Alpea42 there are some nice ones there, I think this is going to start costing me......my wife will not be happy, she says I am playing with toys. Well they do say men never grow up .

Chris

[Tyrant Blaze]

Originally Posted by CHELLIE

Hi Chris That will work, get a stick mount for it, or you can just make a flat motor mount from plywood and bolt the motor on, I have built a lot of planes jets and reg planes, have been in this hobby for over 40 years and Alpea42 has seen and flown a lot of my planes

I will post pics as i'm building. Maytake a while due to new baby, I only get to build and fly during my lunchbreak

[wilmracer]

http://www.parkjets.com/free-plans.html

Lots of great plans. I can vouch for anything by Jetset... They build really nicely and fly great.

[Alpea42]

Would your wife be happier if you played with other women? Just joking. It isn't a cheap hobby , but building them outta foam is a less expensive way to do em. Planes not women. Although a foam woman doll does sound interresting. Can't believe I said that.

[Tyrant Blaze]

Originally Posted by Alpea42

Would your wife be happier if you played with other women? Just joking. It isn't a cheap hobby , but building them outta foam is a less expensive way to do em. Planes not women. Although a foam woman doll does sound interresting. Can't believe I said that.

If I played with another woman she would hit me where it hurts most.............by ripping the wings off my planes or playing with the trim settings and waiting for the inevitable crash

[CHELLIE]

Originally Posted by Tyrant Blaze

If I played with another woman she would hit me where it hurts most.............by ripping the wings off my planes or playing with the trim settings and waiting for the inevitable crash

by ripping the wings off my planes

HA HA HA thats funny I Think AL can relate to That a Little LOL

[Alpea42]

One day I was a bad boy (nothing serious took wifes ATM card to casino). Stayed gone for 3 days She stomped 3 planes into the garrage floor.

[surfer dude]

Originally Posted by Alpea42

One day I was a bad boy (nothing serious took wifes ATM card to casino). Stayed gone for 3 days She stomped 3 planes into the garrage floor.

I hope you won at the casino!

[Tyrant Blaze]

Can some one tell me if ok to run this jet with 1500mAh 3 cell Lipo

I am finding it hard to find a 1.2-1.3Ah, 3 cell lipo here in the UK. I usually use the Hyperion LiteStorm LVX series for their quality. I can get 2 cell easily but not a 3 cell. I am planning on the Steve Shumate F15 after this jet and the 1500mAh would go nicely in that one.

Thanks

Chris

[Some Useless Geek]

Chellie, that motor you mentioned is a 44 gram unit. I use them on tractor airplanes like the Yardarm. If Tyrant's motor weight budget can handle a 44 gram motor then there are lots better choices for a pusher park jet. For instance, this 51g Turnigy motor is great for park jets. I flew a couple of them and really liked the power. It's available in a number of KV values for different RPMs.

Tyrant, you need to pick a motor/prop/battery combo that will give you what you want. For any of the 'cat type park jets you can pretty much go to a 30-35 gram motor in the 1800-2200 KV range and fly either on 2S with a 7 by 6 prop or go 3S and a 6 by 4 or less. Up to you.

[CHELLIE]

Originally Posted by Some Useless Geek

Chellie, that motor you mentioned is a 44 gram unit. I use them on tractor airplanes like the Yardarm. If Tyrant's motor weight budget can handle a 44 gram motor then there are lots better choices for a pusher park jet. For instance, this 51g Turnigy motor is great for park jets. I flew a couple of them and really liked the power. It's available in a number of KV values for different RPMs.

Tyrant, you need to pick a motor/prop/battery combo that will give you what you want. For any of the 'cat type park jets you can pretty much go to a 30-35 gram motor in the 1800-2200 KV range and fly either on 2S with a 7 by 6 prop or go 3S and a 6 by 4 or less. Up to you.

Hi SUG That pusher jet can handel a lot of different motors, my friend even put a EDF on one that I gave him what ever a person is happy with, motor wise, with in reason, it can handel it, take care and have fun, Chellie

[Tyrant Blaze]

Ok everyone, I'm done.

Took a few luch times more than I thought but I got there. Colour sceme is not that brill, but it was the first time I used trim tape and found it difficult to cut to size and shape without cutting into the depron.

Just need to attach the 1/4x1/4 skids on the bottom of the booms then its ready for the maiden Flight but I have some question that maybe you someone could help with.

1. What control throws are best for this model

2. Do you start with all control surfaces neutral

3. I have never flown a pusher jet before, what is the best way to luaunch them.

[Alpea42]

Looks nice T.B. Chellie will help with your questions I'm sure

[Tyrant Blaze]

Originally Posted by Alpea42

Looks nice T.B. Chellie will help with your questions I'm sure

Thanks Alpea42
If I get on ok with this one and dont destroy it to quickly, I intend going for the Steve Shumate F-15 scratch build next.

[Alpea42]

I love Steves designs. Done about 5 or 6 of em. Right now have the Polaris and the VTO nd the F-14 in my avatar.

[Tyrant Blaze]

Originally Posted by Alpea42

I love Steves designs. Done about 5 or 6 of em. Right now have the Polaris and the VTO nd the F-14 in my avatar.

Yeah I saw that in your avatar, I had a browse through you pics, you have some real nice models and there are some real good shots as well.

I was tempted by the F-14 but the F-15 is recommended for people with little build experiance....and thats certainly me

[CHELLIE]

Originally Posted by Tyrant Blaze

Ok everyone, I'm done.

Took a few luch times more than I thought but I got there. Colour sceme is not that brill, but it was the first time I used trim tape and found it difficult to cut to size and shape without cutting into the depron.

Just need to attach the 1/4x1/4 skids on the bottom of the booms then its ready for the maiden Flight but I have some question that maybe you someone could help with.

1. What control throws are best for this model

2. Do you start with all control surfaces neutral

3. I have never flown a pusher jet before, what is the best way to luaunch them.

Well, AL was right, Here I am Wow that looks very very nice, on the color trim, cut it before applying to the foam, on the control surfaces, 3/8" up and 3/8"down, from neutral, for a total of 3/4" on the elevator and ailerons will work great to start, start with all the controls at neutral, just hand launch it, throw it at about a 30 degree angle, like a football a good throw not a girly throw give the elevator a little up trim, about 2 clicks to start with, launch at full throttle, hold the plane in the middle of the fuselage, on the bottom, make sure you follow thru with your hand and it goes down after the launch, so you dont bite your hand on the prop, the motor sits high, so it really should not be a problem, but its a good idea to train your hand to follow thru, and get it out of the way, just incase, Hope that helps, Chellie

[CHELLIE]

also, add some velcro to the foam where the battery, esc and receiver will mount, clean the foam with some rubbing alcohol so the velcro will stick better, the depron has a release agent on it from the factory, so it will come out of the mold, and it needs to be removed for best results, also, glue a string at the CG point, and check lateral balance, from wing tip to wing tip, glue a washer or coin, to the wing tip thats is up, with every thing installed, untill the wing is level, hope that helps, Chellie

THE CG is 13 " from the nose of the plane back, on top of the fuselage at the CG
use a small screw and attach a 4"string to it, attach the screw and string to the foam
fuselage at the top and at the CG, lift the plane by the string, this will allow you to Check
CG and wing tip to wing tip balance. leave the string on the plane, to check balance with
different batteries.