New Wild Hare Sukhoi ready to fly
#1577
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RE: New Wild Hare Sukhoi ready to fly
Thats lite I used a BME 115 on MTW75h cans and put only what It took to fly and I still can in at 26 1/2 but this does include 6oz of lead
on the engine box to get the CG just on the front side of the wing tube. They must have used a heavy tree on the one I got or my scale is off. How is the rite way to way a plane. On my smaller ones I just hang them from the prop. But this one I used a string on the formers under the hatch the layed the hatch cross to way it all together.
The plane is like me just a little over weight.
Thanks Mike B
on the engine box to get the CG just on the front side of the wing tube. They must have used a heavy tree on the one I got or my scale is off. How is the rite way to way a plane. On my smaller ones I just hang them from the prop. But this one I used a string on the formers under the hatch the layed the hatch cross to way it all together.
The plane is like me just a little over weight.
Thanks Mike B
#1578
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RE: New Wild Hare Sukhoi ready to fly
ORIGINAL: mbinkley
Thats lite I used a BME 115 on MTW75h cans and put only what It took to fly and I still can in at 26 1/2 but this does include 6oz of lead
on the engine box to get the CG just on the front side of the wing tube. They must have used a heavy tree on the one I got or my scale is off. How is the rite way to way a plane. On my smaller ones I just hang them from the prop. But this one I used a string on the formers under the hatch the layed the hatch cross to way it all together.
The plane is like me just a little over weight.
Thanks Mike B
Thats lite I used a BME 115 on MTW75h cans and put only what It took to fly and I still can in at 26 1/2 but this does include 6oz of lead
on the engine box to get the CG just on the front side of the wing tube. They must have used a heavy tree on the one I got or my scale is off. How is the rite way to way a plane. On my smaller ones I just hang them from the prop. But this one I used a string on the formers under the hatch the layed the hatch cross to way it all together.
The plane is like me just a little over weight.
Thanks Mike B
#1579
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RE: New Wild Hare Sukhoi ready to fly
My 26lbs 9 was without wheel pants, no pilot figure, a really light Esprit fiberglass spinner and 3 2800 LiIon batteries instead of the 4800's that some are using and no choke servo. That was also with a wood Bunny prop which is a bit liter than with a carbon Prop. It really doesn't matter though -- you will think you are flying a much lighter plane.
#1582
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RE: New Wild Hare Sukhoi ready to fly
Well it been a while since I have posted here. I have finished the baffle install, mounted the canopy and installed the ignition kill unit. I'm currently wait for the DA85 to return from Da as it went in for the prop hub update. I also have a KS95 rear exit canister and header pipe comming. Here are some pics from the last month or so.
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RE: New Wild Hare Sukhoi ready to fly
Looks great Rusty...Nice install...
Wanna try something cool? I did this on mine the other day and it looked awesome..I went to Auto Zone and got some of that glitter spray stuff for cars and put it on my Sukhoi,,It looked really good and stayed on until I wiped it off with windex...
Wanna try something cool? I did this on mine the other day and it looked awesome..I went to Auto Zone and got some of that glitter spray stuff for cars and put it on my Sukhoi,,It looked really good and stayed on until I wiped it off with windex...
#1586
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RE: New Wild Hare Sukhoi ready to fly
It was hard to get, required longer lead times, was more expensive and I thought it had a kind of washed out look. The plain blue is more vivid and easier to see, the pearl tended to disappear against a blue sky.
TF
TF
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RE: New Wild Hare Sukhoi ready to fly
LOL...It still dissapears on me Tom..That silver will blend in a cloud in a heartbeat..Thank God for the Bulls. They have saved me a many of times...Hey!!!..Red Bulls really do give you wings....
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RE: New Wild Hare Sukhoi ready to fly
Here's a photo of the first one that I built.
BTW I saw your post on that other site, and after reading it I lean towards some proplem involving the plane and the setup, not the engines. The odds that the same thing went wrong with 2 engines at the same time are pretty slim.
What I suspect is air swirling around in the round cowl, or pressure differences. I am including a photo of a modification that is often done on this type of plane to stop this. I have seen other odd behavior on other round cowl planes with other engines that otherwise run fine.
TF
BTW I saw your post on that other site, and after reading it I lean towards some proplem involving the plane and the setup, not the engines. The odds that the same thing went wrong with 2 engines at the same time are pretty slim.
What I suspect is air swirling around in the round cowl, or pressure differences. I am including a photo of a modification that is often done on this type of plane to stop this. I have seen other odd behavior on other round cowl planes with other engines that otherwise run fine.
TF
#1594
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RE: New Wild Hare Sukhoi ready to fly
Sweatpea. The picture Tom has is exactly how I have mine mounted and it has worked fine. What engine problem are you having. My Sukhoi has the DA 100 on stock pipes and no baffling in the cowl. I do have a Carbon fiber air deflection plate in front of the carb. The last few flights I have had a strange engine cut out problem when on long slow rolls. Only in one point of the roll. Doesn't do it at all on any 3D type moves. My first thought was swirling air in the cowl but also a possible clunk problem. The clunk was fine but the tubing attachment at the brass pipe was loose so I fixed that and will try again today to see if my phantom roll problem still exists. Just seemed strange to me that this problem would show up after 70 flights or so. I would be really interested if others are seening this problem and what the cause/fix might be.
#1595
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RE: New Wild Hare Sukhoi ready to fly
I know this isn't common.....but I posted here.....
http://www.*FG*.com/forums/fg68/2270...gine-help.html (spell out the * words and remove the *)
Short story.....I have 2 3W106's that are now dying during transition from Idle to mid or Idle to full on this plane
- Needle settings don't seem to help
- carbs have been removed and cleaned
- tank replaced with new fuel line also/ and went from 2 line to 3 line
- 3 sets of spark plugs
- tried different fuel
- cowl on or off
- different ignitons and hall sensor and ignition battery
- went from cans to stock mufflers
What I did different than Tom.......
I notice that Tom put his servo from tail to nose and that the linkage is even with the carb attachement.
If you look at mine......I put the servo wing to wing and it sits lower than the carb (since its a 3W). So it had a funky angle. I don't know why I put the servo wing to wing as Every other plane I've always installed like Toms.
I have now moved the servo. It it laying on its side on the bottom of the motor box and is facing tail to nose. But the downward angle is still there.
and I still have the problem.
By installing the way Tom did.......your linkage moves straight back. By installing it the 2 ways I did the linkage will move straight back but the angle will change as the servo arm moves through. I've never really had a servo mounted like this before. I've always cut a hole in the bottom of the motorbox and installed it like Tom
Do I need to make a mount that will lower the servo to the exact height of the carb so that when the linkage is pulled its a straight line? And has anyone heard of Geometry causing this probelm?
http://www.*FG*.com/forums/fg68/2270...gine-help.html (spell out the * words and remove the *)
Short story.....I have 2 3W106's that are now dying during transition from Idle to mid or Idle to full on this plane
- Needle settings don't seem to help
- carbs have been removed and cleaned
- tank replaced with new fuel line also/ and went from 2 line to 3 line
- 3 sets of spark plugs
- tried different fuel
- cowl on or off
- different ignitons and hall sensor and ignition battery
- went from cans to stock mufflers
What I did different than Tom.......
I notice that Tom put his servo from tail to nose and that the linkage is even with the carb attachement.
If you look at mine......I put the servo wing to wing and it sits lower than the carb (since its a 3W). So it had a funky angle. I don't know why I put the servo wing to wing as Every other plane I've always installed like Toms.
I have now moved the servo. It it laying on its side on the bottom of the motor box and is facing tail to nose. But the downward angle is still there.
and I still have the problem.
By installing the way Tom did.......your linkage moves straight back. By installing it the 2 ways I did the linkage will move straight back but the angle will change as the servo arm moves through. I've never really had a servo mounted like this before. I've always cut a hole in the bottom of the motorbox and installed it like Tom
Do I need to make a mount that will lower the servo to the exact height of the carb so that when the linkage is pulled its a straight line? And has anyone heard of Geometry causing this probelm?
#1598
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RE: New Wild Hare Sukhoi ready to fly
I seriously doubt that linkage geometry has anything to do with it. You have something else wrong, I'd llok at airflow patterns and install that vent line as in my photos.
Also, on the TOC-53 we sometimes have problems that sound similar when it's installed in a round cowl plane. I have found that reversing the carb and reed block solvethe problem, it seems that air is hitting the entry to that carb at a funny angle and causes it to go rich, reversing the carb changes the orientation of the main jet so fuel tends to stay inside the carb. This may be what's going on with you.
You could also try a velocity stack.
TF
Also, on the TOC-53 we sometimes have problems that sound similar when it's installed in a round cowl plane. I have found that reversing the carb and reed block solvethe problem, it seems that air is hitting the entry to that carb at a funny angle and causes it to go rich, reversing the carb changes the orientation of the main jet so fuel tends to stay inside the carb. This may be what's going on with you.
You could also try a velocity stack.
TF
#1599
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RE: New Wild Hare Sukhoi ready to fly
Do the vent line thing. It's very common in round cowl planes with any engine. Not so much standard cowl planes. The 106 has a 90 degree air intake that's availabe. The intake has a nipple sprouting from it that is used to plumb from the carb to the inlet and works quite well in eliminating what you describe. Which is why 3W came out with the optional intake. Works well on uav's too
Contact Gerhard at Aircraft International for more info on the part and it's installation. It works.
Contact Gerhard at Aircraft International for more info on the part and it's installation. It works.
#1600
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RE: New Wild Hare Sukhoi ready to fly
Thanks guys.....but the problem happened with the cowl on or off.
I have also tried the vent line back in the fuse......didn't help.
Never heard of putting the carb on backwards......that is a thought.
When I put the original motor on the Edge.....after 1 needle tweek it worked just fine. I ripped the motor box back open on the Sukhoi and installed it similar to Tom's.
I couldn't get the TOC motor to work right.......but for now the original motor is now running fine on the Sukhoi. I just need to reinstall the cowl with some baffles....and double check.
As for the TOC motor......I noticed some oil near the Reedblock and crankcase but can't tell if its coming from there or the cylinder to crankcase......so maybe its got a slight airleak.
The original motor isn't leaking any oil and never has. This whole thing has been very strange
I have also tried the vent line back in the fuse......didn't help.
Never heard of putting the carb on backwards......that is a thought.
When I put the original motor on the Edge.....after 1 needle tweek it worked just fine. I ripped the motor box back open on the Sukhoi and installed it similar to Tom's.
I couldn't get the TOC motor to work right.......but for now the original motor is now running fine on the Sukhoi. I just need to reinstall the cowl with some baffles....and double check.
As for the TOC motor......I noticed some oil near the Reedblock and crankcase but can't tell if its coming from there or the cylinder to crankcase......so maybe its got a slight airleak.
The original motor isn't leaking any oil and never has. This whole thing has been very strange