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RE: TBM Shock Jet - 8/9/2012 7:12 AM   
BILLYDSRC



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From: AUSTINTOWN, OH, USA
Status: offline 		Comming soon!! Have to keep working on it every night!!!
quote:

ORIGINAL: lt-40 flier

Jet looks great..........Where are the Maiden Video's



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RE: TBM Shock Jet - 8/9/2012 4:52 PM   
BILLYDSRC



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Status: offline 		Here is the maiden flight video!!
http://www.youtube.com/watch?v=5wGabv_a73Y&list=UUQfNa8lYZlyKZZqgDkHLwsg&index=1&feature=plcp


< Message edited by BILLYDSRC -- 8/9/2012 11:48 PM >

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RE: TBM Shock Jet - 8/9/2012 7:21 PM   
kenrod4u


 

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Status: offline 		Wow Billy D, that's one of the most exciting landings I have seen in a while. Fortunately, you brought her down safely, even under two wheel conditions... Great Job! Once you get the wheels secure, you will have have one great flying remote controlled airplane...

Congratulations!

Kenrod4u

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RE: TBM Shock Jet - 8/9/2012 9:20 PM   
flyboy61045



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Status: offline 		Wow Billy I did not know I had an F-15 with smoke LOL

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RE: TBM Shock Jet - 8/10/2012 7:52 AM   
flyboy61045



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Status: offline 		Thanks to BillyD & Jeff for all there help. .
John

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RE: TBM Shock Jet - 8/19/2012 2:42 AM   
hooker53



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Status: online 		Ok Shock flyers. I need four of the little hatch latches like what comes on the Shock. Does anyone know where to get them? I looked on the Net and could not find them. Thanks.
Roy

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RE: TBM Shock Jet - 8/19/2012 4:38 AM   
rcguy59



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Status: offline 		Check BVM and Dreamworks for latches. The originals are crap, anyway. Mine fell apart pretty quick.


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RE: TBM Shock Jet - 8/19/2012 4:53 AM   
hooker53



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Status: online 		Oh i have a box full of BVM and other larger ones I have my two Orig on mine for three years but I want these for a small EDF project.

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RE: TBM Shock Jet - 9/30/2012 5:07 PM   
Jaime_Arenas


 

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From: West Chicago, IL, USA
Status: offline 		Did TBM fix the issue with the wing bolt anchors crushing? I got to the part of the build where you're asked to re-enforce using pieces of 3/8" dowels and I noticed a couple of things: 1) the openings at the top of the wing (front) are much larger than the dowel, they are 3/4" in diameter and 2) the wood is this whole area seems to be very hard, on par with the wood dowel you're asked to use.

I know that there have been several revisions to this bird and I don't know if the wing hold down area is something that's been revised and the whole adding dowels thing is now obsolete.


Thanks,
Jaime

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RE: TBM Shock Jet - 9/30/2012 6:07 PM   
kenrod4u


 

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Status: offline 		Jaime, you shouldn't have any problems with the wing. Just follow the instructions and make sure to reinforce the bolt area with CA so it hardens. You should not have any problems as long a stay with in the parameters of the manual. Here is my most recent video:
http://m.youtube.com/watch?v=TWWgbgyZa8c

Have Fun!

I know I am...

Cheers

Ken

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RE: TBM Shock Jet - 9/30/2012 6:20 PM   
hooker53



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Status: online 		Jamie, it won't add that much to the AUW and will take only a little time to do. I would take the time to do it. That way you won't have any regrets later.

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RE: TBM Shock Jet - 11/5/2012 1:37 AM   
heliflight


 

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Status: offline 		Hi Folks - I'm new to this forum and have found the information contained herein very helpful. Thanks. I've recently acquired a Shock Jet, but haven't flown it yet.

Today another pilot at our field was demonstrating the short takeoff roll of his Shock jet. He over rotated a bit, and the tail struck the runway on the takeoff roll. The elevator servo arm was observed to break and the control rod was seen hanging down from the elevator attach point. Needless to say, he had no elevator control, and the flight was very short with the Jet going straight in. A total loss.

Upon arriving home, I pushed the tail of my airplane down and found the first thing to touch the ground is the threaded rod that passes through the elevator which is the attach point for the elevator control rod. The obvious solution to this dangerous problem is to fabricate a tail skid which would attach to the lower fuselage and touch the ground before the threaded control rod, thus protecting the elevator control in the event of a tail strike. Such a skid would be very easy to fabricate and would have saved the airplane that crashed today. Anyone done this? I will before mine is flown.

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RE: TBM Shock Jet - 11/5/2012 2:02 AM   
hooker53



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Status: online 		Never seen it done and don't have one on mine but I don't pitch that hard on takeoff. You can slam the tail on any of them. Just take off in a normal fashion and you will be fine. Another friend of mine has a JC Falcon in his and does a jump takeoff sometimes but he clears the deck before he hauls back on it. Good luck with your Shock. It's a fun flying jet.

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RE: TBM Shock Jet - 11/5/2012 2:14 AM   
rcguy59



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Status: offline 		When demonstrating the VERY short takeoff distance of my Shok, I apply the brake, firewall the power and hold full-up elevator. When the brake can no longer keep the airplane from moving, I release it while continuing to hold the up-elevator. After a roll of 6-10 feet, it rotates. Upon rotation, I instantly center the elevator and begin climbing. This is done with the flaps fully UP. If the flaps are down, it's very difficult to keep the nose down since the flaps cause a lot of pitch-up that the elevator just can't counter at such stupid-low airspeeds. The only reason I consistantly get away with this kind of takeoff is that I have 20 lbs. of thrust on tap and a borderline-psychotic need to use every ounce of it.    With 12-15 lbs. of thrust, I can see where you could drag the elevator horn before it lifted off. I've never even thought about it before, as I've never been able to drag the tail before liftoff. With mine, once it rotates, the nozzle pointing down and the increasing AOA of the wing conspire to produce near-instant liftoff with no time for the tail to drag. I will still be installing a skid to protect the elevator horn, though. Thanks for the heads-up.


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RE: TBM Shock Jet - 11/5/2012 2:41 AM   
heliflight


 

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Status: offline 		The accident airplane was using flaps for takeoff. I thought I observed crow which would indicate full flaps. I'm not positive about this, but if so, it could have been contributory to what happened.

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RE: TBM Shock Jet - 11/5/2012 3:03 AM   
rcguy59



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Status: offline 		I agree. The airplane would just continue to climb until the power was reduced.  I once flew a Shok owned by a friend I was helping to get ready for his waiver test. When doing a touch and go, if you didn't retract the flaps immediately upon touchdown, it would stand on it's tail as soon as it lifted off, even with full-down elevator. Scared the hell out of me the first time it happened. If not for the fact that it had a lot of power, (K-80) it would have simply fallen out of the sky 10 ft. above the ground. Mine doesn't have this tendancy, and we've never figured out why. Could have to do with a bad combination of aft-CG and and inadequate downthrust but that's just a guess on my part.


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RE: TBM Shock Jet - 11/5/2012 1:38 PM   
jblloyd



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Status: offline 		Forgot to retract the flaps on mine after landing and, during the taxi back at a moderate speed, it suddenly took off on  its own.  Had to apply power and go around again.

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RE: TBM Shock Jet - 12/14/2012 1:32 AM   
Dr Honda



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Status: offline 		Has anyone successively done a 2 piece wing for a ShockJet? I'm thinking about building one... but the bed of my truck is short.


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RE: TBM Shock Jet - 12/14/2012 1:56 AM   
rcguy59



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Status: offline 		The wing doesn't need to be 2-piece, just clip it! Here's my clipped wing next to my full-span wing. The clipped wing is 64" span. Small enough for almost any vehicle. The roll-rate is 3-4 times faster than the stock wing. I left the ailerons the stock span and removed 8" from each flap and wing tip. It lands a bit faster, but still SLOOOOOW by turbine standards. And that's with a 101oz. tank and a Rabbit. Lots of fun and hauls A$$!


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RE: TBM Shock Jet - 12/14/2012 2:37 AM   
Dr Honda



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Status: offline 		Very interesting !! Do have any vid of the clipped wing flying?


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RE: TBM Shock Jet - 12/14/2012 2:58 AM   
rcguy59



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Status: offline 		Sorry to say that I don't, Honda. I should be able to fix that after the first of the year, though. A new guy in the club not only loves to shoot video, but he's quite good at it and just bought a really nice high-def camera. The SJ wing is notoriously weak when flown aggressively. My first one separated in the center after about 25 flights powered by a 14lb. SuperBee. Luckily, I spotted it while refueling. TBM told me it was my fault, of course, but funny thing, the "fix" they later put out was EXACTLY what I told them was needed. That was three years ago, so the wing construction may have changed since then, though I doubt it. My solution on my second SJ was to strip the wing, clip it and after epoxying the two halves together, glassing the hell out of the center section before re-covering. 100+ flights later, I'm convinced that it's pretty much bullet-proof. I can pull all the gee I want and it keeps coming back for more.


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RE: TBM Shock Jet - 12/14/2012 5:08 AM   
Molar mender



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Status: offline 		If your still worried about the wing, you may want to look at post #678 to see the mod I did with the wing before putting it together with glass/resin. Its easy and adds additional strength. Lots of flights on this wing and no problems.

Roy

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RE: TBM Shock Jet - 12/17/2012 11:57 PM   
Dr Honda



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Status: offline 		Molar Mender: I'm not worried about the wing breaking. I just need it to come apart. Dealing with an 80" wing is rough.

RCGuy59: The more I think about it... clipping the wing isn't the answer either. I need a stable floater.


OK... I've been talking with Roy, and I know he still actively flys his SJ. BUT... for the guys with some turbine stick time, and other scale models... do you still find yourself flying a SJ? Or are the majority of you guys just getting your waiver with it, and moving on.


Here's my deal. I'm joining a new club... and the field is a little tight, and it's a rough grass strip. Also... there are ball fields at the one end that we are not allowed to fly over. So... I need a jet that I can make a tight turn for landing... and not get busted up flying on grass all the time.

I think that the SJ is the answer to my problem... but something in the back of my head keeps telling me not to buy one.


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RE: TBM Shock Jet - 12/18/2012 3:38 AM   
rcguy59



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Status: offline 		Honda: If you HAVE to have a 2-piece wing, contact Limey Bob at LDS and order one of his JetMach 60 kits. It can be built with a one- piece OR two-piece wing. Yes, you have to build it, but Bob's kits go together quickly and easily. The SJ is a rip-off of the JetMach 60, anyway. Basically the same airplane. My clipped-wing SJ is no less stable than the full-span version. I fly in a rather small (by jet standards) club field. Our runway is 300 ft. by 40 ft. asphalt. If I do my part, my clipped-wing SJ uses a bit more than half of the runway for landing. Molar Mender flies at the same field. In fact, he is also the CD that signed my waiver application, at this very field. I taught Tip22v to fly his SJ at this field as well. Every flight, the runway seemed larger to him. He had it nailed in 4 or 5 flights and Molar Mender got to sign-off on another waiver. I've said this before and I'll say it again. The SJ may be homely, but it's GREAT in bed.


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RE: TBM Shock Jet - 12/18/2012 12:55 PM   
Dr Honda



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Status: offline 		Thanks for the input.

To be honest... the "Ugly" for me is the easy part to get past. I like "Stick" models. I have a few sizes in the fleet right now. From an electric, up to a 30cc. And... to me... this is just a "Jet Stick".

I'm aware of the jetmach and SJ history. My problem is... I don't know if I will find time to build a full kit. Although... it would be the easy solution to the big wing.

I guess my second problem is... ever since getting my waiver... I've been brainwashed into thinking I need faster, composite jet's.

I've been thinking about it for a couple weeks now... and at this point... I should take a few more days to figure it out. There's no reason to order one now, and have it shipping with the rest of the Xmas rush.


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