BOOMERANG ELAN - New Build & Setup Thread!
#51
RE: BOOMERANG ELAN - New Build & Setup Thread!
If you plug both flap servo's into one Rx channel they will operate in the same direction therefore you need both servo's to be installed with the arms on the same side, this means one of the servo bodies will be towards the fus and the other will be towards the wing tip, this all means the captive nut for the ali rod has to be more outboard on one sub wing, Conversely if you have the flap servo's on seperate channels once one of them is revearsed................................I think you get the picture, I think it was all done so that those poor souls who use Spektrum or JR in the early days could use the seven channels they only had on their system.
Was that controversial, we need a devil smiley on here.
Mike[sm=tongue_smile.gif]
Was that controversial, we need a devil smiley on here.
Mike[sm=tongue_smile.gif]
#54
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RE: BOOMERANG ELAN - New Build & Setup Thread!
Put the second flight on my Elan on Saturday.
I´m not real comfortable with it, kind of "nervous" airplane....needs your attention all the time!
When I came back home, I did another balancing. Noticed that it was rather noseheavy...C of G was in front of Alan´s 25 cm from the trailing edge.
Moved my reciever batteries (2 x LiPo) to the back of the tank...and put the C of G back to 24 cm from the T.E.
Now it´s interesting to see if that helped...?
/Pete
I´m not real comfortable with it, kind of "nervous" airplane....needs your attention all the time!
When I came back home, I did another balancing. Noticed that it was rather noseheavy...C of G was in front of Alan´s 25 cm from the trailing edge.
Moved my reciever batteries (2 x LiPo) to the back of the tank...and put the C of G back to 24 cm from the T.E.
Now it´s interesting to see if that helped...?
/Pete
#55
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RE: BOOMERANG ELAN - New Build & Setup Thread!
I have put on 5 flights since completing the Ćlan and mine is also slightly nose heavy. She still flies fine, hhowever. I do not want to relocate two receiver packs, although it might help with high alpha landings! It flies great. Try backing off the throttle for more docile flying.
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RE: BOOMERANG ELAN - New Build & Setup Thread!
I´ve only got my Boomerang Sprint to compare with. The Sprint was a very stable platform, which flew- when trimmed out"-hands off!
The Elan, however feels different in a "nervous" way.
Compared with a flying buddy in Denmark, who´s also flying an Elan. He said that he flew with the C of G 23,5 cm from the T.E. and that felt good! Noseheavy the Elan didn´t fly that well, was his opinion.
Since my reciever packs are LiPo´s they are not permanently installed in the nose. I prefer to charge them outside the fuse...just in case. So moving them aft didn´t represent any problems.
/Pete
The Elan, however feels different in a "nervous" way.
Compared with a flying buddy in Denmark, who´s also flying an Elan. He said that he flew with the C of G 23,5 cm from the T.E. and that felt good! Noseheavy the Elan didn´t fly that well, was his opinion.
Since my reciever packs are LiPo´s they are not permanently installed in the nose. I prefer to charge them outside the fuse...just in case. So moving them aft didn´t represent any problems.
/Pete
#57
RE: BOOMERANG ELAN - New Build & Setup Thread!
I ended up with two A123's under the tank and a three cell A123 between the wheel wells and no UAT to get the C of G where I wanted it, but it still dropped its nose in turns and needed down elevator inverted, I don't know where the C of G ended up, but it was way back from the original in the instructions.
In its flying condition, but empty of fuel putting the Elan back on its tail it would stay there, but with the slightest bit of a nudge it would go back onto its nose wheel, any further back and it got a bit elevator sensitive, this does not necessarily mean this is the definitive position, but is where I preferred it to be, please feel free to discuss this further everyone.
Mike
In its flying condition, but empty of fuel putting the Elan back on its tail it would stay there, but with the slightest bit of a nudge it would go back onto its nose wheel, any further back and it got a bit elevator sensitive, this does not necessarily mean this is the definitive position, but is where I preferred it to be, please feel free to discuss this further everyone.
Mike
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RE: BOOMERANG ELAN - New Build & Setup Thread!
Hey Guys,
I am now building me second Elan (new version)
The last Elan I build while setting the CG it was nose heavy. I had to add weight to the rear.
I am trying not to add useless weight to set the CG
Should I favor the front or the back while installing the batteries, fuel pump,smoke pump,,,,ETC???
I am hoping that while installing the RX battery and the ECU battery, I will just have to ajust the location of the batteries to set the CG
Thanks Guys
Hoss
I am now building me second Elan (new version)
The last Elan I build while setting the CG it was nose heavy. I had to add weight to the rear.
I am trying not to add useless weight to set the CG
Should I favor the front or the back while installing the batteries, fuel pump,smoke pump,,,,ETC???
I am hoping that while installing the RX battery and the ECU battery, I will just have to ajust the location of the batteries to set the CG
Thanks Guys
Hoss
#60
RE: BOOMERANG ELAN - New Build & Setup Thread!
ORIGINAL: BaldEagel
I ended up with two A123's under the tank and a three cell A123 between the wheel wells and no UAT to get the C of G where I wanted it, but it still dropped its nose in turns and needed down elevator inverted, I don't know where the C of G ended up, but it was way back from the original in the instructions.
In its flying condition, but empty of fuel putting the Elan back on its tail it would stay there, but with the slightest bit of a nudge it would go back onto its nose wheel, any further back and it got a bit elevator sensitive, this does not necessarily mean this is the definitive position, but is where I preferred it to be, please feel free to discuss this further everyone.
Mike
I ended up with two A123's under the tank and a three cell A123 between the wheel wells and no UAT to get the C of G where I wanted it, but it still dropped its nose in turns and needed down elevator inverted, I don't know where the C of G ended up, but it was way back from the original in the instructions.
In its flying condition, but empty of fuel putting the Elan back on its tail it would stay there, but with the slightest bit of a nudge it would go back onto its nose wheel, any further back and it got a bit elevator sensitive, this does not necessarily mean this is the definitive position, but is where I preferred it to be, please feel free to discuss this further everyone.
Mike
Mike
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RE: BOOMERANG ELAN - New Build & Setup Thread!
Hi Hoss:
Give Dave Elsinger a call about CG and equiptment position. He, Bob Schultheis, and Marv Ingerson have more flights on their Elans than anyone I know of round here........probably 600-700+......
Tom
Give Dave Elsinger a call about CG and equiptment position. He, Bob Schultheis, and Marv Ingerson have more flights on their Elans than anyone I know of round here........probably 600-700+......
Tom
#63
RE: BOOMERANG ELAN - New Build & Setup Thread!
I love the elan... but almost all of the questions above are answered in the other build thread. we have been down this road already. spend a 12pack and a couple of nights and you are ready to build.. with emphasis onthe 12pack.
I fought that thing getting the tanks in, the radio tray the extra tray, the fuel tray the AD on the tank mounts, the flap servos, the servo mounts, the gear install, the CG, the Stab incidence...... Its all there..
I fought that thing getting the tanks in, the radio tray the extra tray, the fuel tray the AD on the tank mounts, the flap servos, the servo mounts, the gear install, the CG, the Stab incidence...... Its all there..
#64
RE: BOOMERANG ELAN - New Build & Setup Thread!
ORIGINAL: Lil Hoss
Hey Guys,
I am now building me second Elan (new version)
The last Elan I build while setting the CG it was nose heavy. I had to add weight to the rear.
I am trying not to add useless weight to set the CG
Should I favor the front or the back while installing the batteries, fuel pump,smoke pump,,,,ETC???
I am hoping that while installing the RX battery and the ECU battery, I will just have to ajust the location of the batteries to set the CG
Thanks Guys
Hoss
Hey Guys,
I am now building me second Elan (new version)
The last Elan I build while setting the CG it was nose heavy. I had to add weight to the rear.
I am trying not to add useless weight to set the CG
Should I favor the front or the back while installing the batteries, fuel pump,smoke pump,,,,ETC???
I am hoping that while installing the RX battery and the ECU battery, I will just have to ajust the location of the batteries to set the CG
Thanks Guys
Hoss
#65
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RE: BOOMERANG ELAN - New Build & Setup Thread!
I've read the full Ć©lan build thread and this one plus the manual. One thing I'm trying to figure out is what exactly holds the wing on? It looks as if the wing bolts just pinch the wing pins and don't actually penetrate the wingpin to lock the wing in place. Am I correct? Doesnt seem like much keeping a wing panel on if so. Are some people modifying this if so?
#68
RE: BOOMERANG ELAN - New Build & Setup Thread!
ORIGINAL: BoomerSooner
I've read the full Ć©lan build thread and this one plus the manual. One thing I'm trying to figure out is what exactly holds the wing on? It looks as if the wing bolts just pinch the wing pins and don't actually penetrate the wingpin to lock the wing in place. Am I correct? Doesnt seem like much keeping a wing panel on if so. Are some people modifying this if so?
I've read the full Ć©lan build thread and this one plus the manual. One thing I'm trying to figure out is what exactly holds the wing on? It looks as if the wing bolts just pinch the wing pins and don't actually penetrate the wingpin to lock the wing in place. Am I correct? Doesnt seem like much keeping a wing panel on if so. Are some people modifying this if so?
#69
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RE: BOOMERANG ELAN - New Build & Setup Thread!
I have a question, keep in mind I am new to complex models.
I am installing the pull cables for the nose steering to the servo.
* I am assuming the cables needs to be somewhat tight with gear down so that there is no play. I guess it is ok that they rub on the wood where they go through the hole?
* When I retract the gear with my hand pump it sometimes jambs the metal clevis attached to the nosewheel on the wood mount, also when retracted the the clevises are pointing "up" and the cables are bent 90 degrees and a little tight.
Does anyone have any photos of there cables at the nosewheel when retracted?
Thanks
Buz
I am installing the pull cables for the nose steering to the servo.
* I am assuming the cables needs to be somewhat tight with gear down so that there is no play. I guess it is ok that they rub on the wood where they go through the hole?
* When I retract the gear with my hand pump it sometimes jambs the metal clevis attached to the nosewheel on the wood mount, also when retracted the the clevises are pointing "up" and the cables are bent 90 degrees and a little tight.
Does anyone have any photos of there cables at the nosewheel when retracted?
Thanks
Buz
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RE: BOOMERANG ELAN - New Build & Setup Thread!
ORIGINAL: buz914
I have a question, keep in mind I am new to complex models.
I am installing the pull cables for the nose steering to the servo.
* I am assuming the cables needs to be somewhat tight with gear down so that there is no play. I guess it is ok that they rub on the wood where they go through the hole?
* When I retract the gear with my hand pump it sometimes jambs the metal clevis attached to the nosewheel on the wood mount, also when retracted the the clevises are pointing ''up'' and the cables are bent 90 degrees and a little tight.
Does anyone have any photos of there cables at the nosewheel when retracted?
Thanks
Buz
I have a question, keep in mind I am new to complex models.
I am installing the pull cables for the nose steering to the servo.
* I am assuming the cables needs to be somewhat tight with gear down so that there is no play. I guess it is ok that they rub on the wood where they go through the hole?
* When I retract the gear with my hand pump it sometimes jambs the metal clevis attached to the nosewheel on the wood mount, also when retracted the the clevises are pointing ''up'' and the cables are bent 90 degrees and a little tight.
Does anyone have any photos of there cables at the nosewheel when retracted?
Thanks
Buz
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RE: BOOMERANG ELAN - New Build & Setup Thread!
Thanks Todd!
That makes a lot more sense. Now I won't have to call you tomorrow.
Your gear kit came with 4 clevises, so I used them!
Thanks again
Buz
That makes a lot more sense. Now I won't have to call you tomorrow.
Your gear kit came with 4 clevises, so I used them!
Thanks again
Buz
#72
RE: BOOMERANG ELAN - New Build & Setup Thread!
Also buz leave a bit of slack in the cables to ensure the nose wheel extends, if too tight they can stop the gear from locking down.
Mike
Mike
#73
RE: BOOMERANG ELAN - New Build & Setup Thread!
ORIGINAL: petera38
Put the second flight on my Elan on Saturday.
IĀ“m not real comfortable with it, kind of ''nervous'' airplane....needs your attention all the time!
When I came back home, I did another balancing. Noticed that it was rather noseheavy...C of G was in front of AlanĀ“s 25 cm from the trailing edge.
Moved my reciever batteries (2 x LiPo) to the back of the tank...and put the C of G back to 24 cm from the T.E.
Now itĀ“s interesting to see if that helped...?[img][/img]
/Pete
Put the second flight on my Elan on Saturday.
IĀ“m not real comfortable with it, kind of ''nervous'' airplane....needs your attention all the time!
When I came back home, I did another balancing. Noticed that it was rather noseheavy...C of G was in front of AlanĀ“s 25 cm from the trailing edge.
Moved my reciever batteries (2 x LiPo) to the back of the tank...and put the C of G back to 24 cm from the T.E.
Now itĀ“s interesting to see if that helped...?[img][/img]
/Pete
#74
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RE: BOOMERANG ELAN - New Build & Setup Thread!
Hi Goose,
Yeah ..I remember you wrote that earlier in this thread...or perhaps it was another thread. They pop up like mushrooms these Elan threads, and lots of questions about C of G.
/Pete
Yeah ..I remember you wrote that earlier in this thread...or perhaps it was another thread. They pop up like mushrooms these Elan threads, and lots of questions about C of G.
/Pete
#75
RE: BOOMERANG ELAN - New Build & Setup Thread!
I was lucky enough to test fly two Elans today, from the last batch of kits made. Different turbine set-ups P-80SE and P-120SX and both pre set with a rearward balance point from the start based on experience with the type. Both flew great, but required a lot of up trim-more than I'd expect. We decided to pack one of the models tail using 1mm washers between the fin top and tailplane mounting plate, on the rear screws only. Elevator trim was then centred.
Anyone about to test a newish Elan be prepared for some up trim. Its within the elevator trim range so can easily be dealt with.
Other than than they were two nice aeroplanes.
Dw
Anyone about to test a newish Elan be prepared for some up trim. Its within the elevator trim range so can easily be dealt with.
Other than than they were two nice aeroplanes.
Dw