RE: Senior telemaster engine?
 

I am also running a 16oz Dubro with my Sr T and G20ei, and generally I dont refuel during the day, the G20ei sips the gas and seems to last forever.

RE: Senior telemaster engine?
 

i'm flying mine with a magnum .52 fourstroke. has two hobby lobby bomb drops. 13/4 master airscrew prop. an absolute blast! 55 minutes on the tank that comes in the kit! originally bought to put my old g-22 on, yes 22cc, not 23! while the motor was at rc ignitions having the ignition put on i couldn't stand it, one saturday afternoon just to prove to everyone that models are way over powered i bolted the old fourstroke on! the look is priceless when people see that little engine pulling that big bird with authority! should i put the gasser on? i sure do hate glow. jeff

RE: Senior telemaster engine?
 

Ok noob question here...The senior telemaster arf as advertised on hobby-lobby website is an electric is that coming with the conversion package or is it a totally different airframe. The reason I ask is I have a .61 Evolution sitting around that was waiting on a Protege I was building for a friend but he went and bought a TT .46 so it frees up one engine. and for the price I really dont wanna go into a kit build if the arf will work fine with that motor any ideas?

RE: Senior telemaster engine?
 

The Evo .61 should pull the Telemaster just fine. I have heard of smaller engines on this plane. Go for it. As far as a 'conversion package' for electrics, there isn't any...or not with my kit anyway. Power for this big floater is determined by what you plan to do with the plane. If you are planning to tow up gliders, carry a payload of candy to drop for the kids, carry an on-board camera, use floats, etc., like me, use a bigger engine, otherwise, have fun with the .61.

steelie

RE: Senior telemaster engine?
 

Ok so the ARF can be used either way electric or glow without any major work? Cause my creative building skills are still......developing while I can easily figure out what to do with stuff like struts and such getting myself into something say reinforcing the fuse and wing lol that my take me a bit. Just dont wanna get in over my head but then hey thats how i learn lol

RE: Senior telemaster engine?
 

The only way to learn is to be willing to get in over your head. Most times, folks that do this will make out just fine - even if they must make a few mods afterward.

The problem with Telemaster ARFs is that there are so many variations of them, and no two seem to be alike. Fortunately, from what I have experienced and heard, all of them can be converted back and forth between electric/glow/gas.

If you have to make a new firewall, or strengthen an existing firewall, don't hesitate to shop at Lowe's or Home Depot for door skin material. It can be laminated in sheets to make any thickness of plywood that you will need. Just don't forget to coat it with a fuel proof coating of oil based polyurethane or epoxy glue before using it around a glow or gas engine.


Ed Cregger

RE: Senior telemaster engine?
 

As far as reinforcing things, the fuselage is the best candidate. With an engine idling/low rpms, the tail feathers just shake like crazy. Two guys at my field have Telemasters, I've seen it happen. The aft fuselage is a bit feeble. I have yet to build mine, but my plan is to remove the covering (on the fuselage) from the rear wing saddle former, and all the way back. Then add lengths of 1/16"sheet balsa, cut to fit, to the inside of the formers, that entire length. Then recover. Should be easy to do. Might be an easier method, just need to figure it out. I'm not saying you need to do this, but you will see your Telemaster shake. OR go electric.

RE: Senior telemaster engine?
 

You know just after my last post I read that and got to thinking that if tail shaking was an issue I think it would be too easy to just remove the covering and sheet the sides after all the covering isnt transparent and with the lifting tail dont think weight would be an issue. Although I do have to ask how long is the tail from just aft the trailing edge to the tail feathers maybe its not too feeble maybe its just long so the motions get exagerated kinda like flying in a cessna 150 you dont see the wings flex much at all but step it up to a 747 and you can see the wings flex in feet.. is structural integrity an issue with the 747? I think not, just longer so more exagerated. You know sounds like i need to order this model this weekend......just gotta slip it past the boss. Lol i keep editing thanks Ed for the encouragement, and steelie where at in MI are you I grew up near Grand Rapids but Army moved me to KS.

RE: Senior telemaster engine?
 

Crash,

I understand your point with the 'bigger makes it easier to see' comparison with the 747. But I gotta tell you, the Telemaster ARF is weak back there. I like your idea about sheeting the exterior for strength. But don't let that scare you, go ahead and order it. It is a blast to fly. Inverted flybys are comical.
One other mod is to make the tail fin bigger as well. Another easy step. Just lay it flat, pinned down with the covering off and add balsa stock to it. You are right to not worry about adding weight to this plane in the form of reinforcements. It flies so well and so slow. As a matter of fact, it won't land unless you slow it down to almost a crawl. If you put a brick inside it, it might land better :D.

I'm out here between Pontiac and Flint, near Ortonville.

RE: Senior telemaster engine?
 

Sometimes all that is needed for a shaking tail assembly is to put struts (made of pushrod wire) between the vertical and horizontal stabilizers. This assumes that the horizontal and vertical stabilizers are securely mounted to the fuselage. I tend to use extra triangle stock to hold things together in the rear. It is light, easy to apply and it adds considerable strength to the area.


Ed Cregger

RE: Senior telemaster engine?
 

Ed,

Tail struts are a good idea, but the problem is that the aft fuselage is weak, allowing all to shake. Adding struts won't fix this one.

RE: Senior telemaster engine?
 

My Goldberg Cub used to shake its tail quite a bit. It was powered by an Enya 80-4C engine and would climb in knife edge flight. <G>

The tail used to move around quite a bit on that model too. That one needed struts between the vertical and horizontal stabilizer, although I did put several hundred flights on it before trading it for a Yaesu FT-101E ham transceiver. Wish I still had the Cub.

I've got several Telemasters in the que (different sizes), so I'll check over the fuselage for weak points.


Ed Cregger

RE: Senior telemaster engine?
 

Ed,
Just so you know, we are talking about the ARF, not the kit version of the Telemaster. The kit is far superior to the ARF, and needs no stiffening anywhere.

RE: Senior telemaster engine?
 

Point taken.

I have both ARFs and kits. I hope I get to assemble/build/fly them all. That will take a few years.


Ed Cregger

RE: Senior telemaster engine?
 

Ok ty for the heads up sounds like I'm gonna have fun with this bird first will be the tail feather mod as well as beefing up the fuse. I also think that adding speed brakes on the top of the wing to kill lift would work out well what do you think? If I go with flaps I may try to do rig up fowler flaps but we'll see I also have a couple very large cowlings laying around and may try to rig one up.

RE: Senior telemaster engine?
 

Ed is correct just add wire struts if the flexing bothers you................I have had 2 STM and the tails flex but I would not call them weak.................my first TM flex for over 10 years without a problem.......it was taken out in a mid-air. The second Sr TM, I added wire struts and the flexing stopped. I had a TT91 4c engine on mine and it was a blast to fly.......the larger 4C engine allowed for some vary slow idle passes swinging the large wood.....2 clicks above idle as I remember

RE: Senior telemaster engine?
 

Well after all that I was at the LHS yesterday and saw an alpha 60 ARF......well heard they make nice convertables to tail gear later in life so bought one up along with a spektrum dx-6i radio wifey wasnt too thrilled but hey its tax time lol.

RE: Senior telemaster engine?
 

Crash,

You will like the Alpha. Very stable flier and better than several other trainer types.[sm=thumbup.gif]

RE: Senior telemaster engine?
 

Does anyone have any idea how much load the Senior Telemaster can carry? With a 26cc 17x4w prop, gross takeoff weight around 22.5 lbs?

RE: Senior telemaster engine?
 

Powered by a 10cc glow engine, the Senior Telemaster was commonly thought capable of reliably lifting a 10 lb. payload.


Ed Cregger

RE: Senior telemaster engine?
 

FWIW, I flew my Sr. Telemaster with an original Webra 4-stroke, rotary valve 60. It put out the power of maybe a 30 2-stroke. It was plenty to pull the plane around realistically. It wouldn't hover, of course, but it was a good trainer.:D

RE: Senior telemaster engine?
 

We flew it yesterday at 20.5 lbs auw. It was a bit sluggish but still had ample power to takeoff and climb out. Next step 22 lbs..:D

RE: Senior telemaster engine?
 

Ok Guys,
I have built the Sr. Telemaster from a Kit, but I'm now going to build a yellow colored ARF. I managed to get one from a gentleman leaving the hobby at a really nice price, and now plan to put it together. All my past Sr. Telemasters were powered with K&B .61's and flew just great with this engine. More then enough power at sea level, and in my last one, I had a bomb bay built into the fuse, and it would lift up to 10# with out to much effort.

If anyone has any comments on the Hobby Lobby Sr. Telemaster ARF, I would love to hear from you.

Soft Landings Always,
Bobby of Maui

RE: Senior telemaster engine?
 

It is a great airplane, by far my favorite. I had a Zenoah 20 cc gas in my original until I had a switch failure inflight. Oh well. I have a SPE 26 cc in the new one. I love the gas engines and it is a great fit for the ST. The 20cc was more than enough power for everything but verticle flight.

We flew a ST for 7 hours 2 years ago in an endurance contest. We landed with fuel 2 minutes after the neares competitor. I have a Giant kit loaded with LED for night flying. 55 cc DLE. Massive "bomb" bay.

Enjoy...

RE: Senior telemaster engine?
 

I have the Senior Telemaster ARF and I put an RCGF 15cc in it but I have not flown it yet. (Stuck in Afghanistan for 16 more days..) I modified the wing to use two wing bolts so no rubber bands for me. I would suggest, if you go the gasser route, to place the rudder and elevator servos in the tail, because mine wound up nose heavy and I will have to move the batteries pretty far back to compensate. I also modified the elevator so I could use one servo (joined the halves with a wooden dowel). Other than re-gluing anywhere I could reach, I left it pretty much stock after that. :D