hummingbird111

dremelboy,, that's what i am planning on doing to mine,, my hs 75 bb retract servo sticks sometimes too,, []

dremelboy

hi there hummingbird i think thats wise becayse if you dont what will happen could be fatal to your bird people may think wy let me tell you if the retract servo keeps stalling then its not getting to its start stop points witch in turn meens the battrey is still sending power to the servo witch can the run it down leading to no power to the rest of your servoes [X(] then you wont have to worry about the retracts because youll have no bird to worrie about or even worse one of your buddies at the field may cop it not good so im going to follow suite

tenacious101010

My Feedback: (97)

dremel is right on the money on this, you want the mechanical linkages as close to perfectly adjusted as possible. Use your mechanical adjustments first then you can use the end points of your transmitter for ultra fine adjustments. If you are hearing a servo growling/buzzing/humming, whatever one might call it, you are hearing it suck the life from your battery at a very fast rate. The opportunity for your plane to fly uncontrolled just gets that much closer. Good Luck!

Billville

Amen, Brother.

Someone suggested using a separate battery for the retracts. Anyone heard of that before, and what do you think?

rare_bear

My Feedback: (1)

wot?
a seperate power supply for the retracts?
2 servos for the retracts?

sounds like a band-aid approach to me.
best to get the gear working properly in the first place, but that's just my opinion.

pc55bomber

I used 2 retract servo's (2 x GWS136) because I added Robart oleos and scale wheels to the original retracts, which was too much for 1 servo to handle.

I agree with Rarebear, if your retracts are not working properly on 1 servo, you have a problem, find the problem and fix it.
Mine worked fine without any incidents with 1 servo.
Adding another battery to power the retracts is a complete waste of time and does not solve the problem.

Check that the Z bend connector, at the retract end, is not snagging on the framework you can turn the plastic fitting or file the wood to make it work smooth.

Or remove the retract and check that the unit works smoothly on the bench, its much easier finding the problem that way.

Hope this helps.

Cheers
Paul

dremelboy

hi there bomber i here what your saying its not a case of get them working propley first i have gear doors on mine witch causes drag and struggels to go up pluss my plane now ways about 11lbs due to the referb

pc55bomber

Roger that Dremelboy, in that case add the extra servo to handle the extra load.
This is an easy refit if you position the additional servo in exactly the same location on the other wing, as the cutouts are already in the ribs to accept the servo rails. Check my post 891 for pics.
I still only use 1 battery pack so a 2nd pack is not required unless you need extra peace of mind.
Hope this helps
Paul

kenbill

has anyone out there replaced the retract wire with robart struts. if so which ones. did you have to do any modifications

Billville

I agree, RB -

I think that dedicated retract batt was someone's workaround to solve the DX7 brownout issues. The DX7 receiver takes two seconds to reset, and some guys focused on the retracts and servo as the potential cause for a high load condition.

But I don't think that is a solution for gear related problems.

Still flyin' the Bearcat, RB? Bill

dremelboy

hi there bomber nice job i think i referd to your post when someone else asked me about the retracts im going to do the same does any one know were i can get images on the net of an colling air exit flap for the p51 i want to make an air operated one for my zeroli mustang and also the other little flap witch is in front of it

pc55bomber

Hi Kenbill
see my post 895 for the details.

Have to modify the retract body so the strut will close ( I just used my dremel) you will notice a small piece of brass plate in the retract which was glued with CA to remove the slop.
Remove the wheel well lining (where the strut sits) as per the pics and relace with some balsa to finish off.

I used the original wire leg as per the Robart instructions. works great.

Hope this helps
Cheers
Paul

kenbill

Paul
Thanks for the info. There were no pictures on post 895

pc55bomber

The pics are in post 891.

Q8Nitro

Hi guys,
This is Ali from Kuwait again, happy to announce that i finished building my P-51 2 days ago and the maiden flight will be this weekend hopefully if the weather is ok, it's powered by an OS FS 120. i have a small question, what prop shall i use?? all the local pilots are telling me to go with the 13*9, isn't too small for this bird?
here are some photos, hope you like it

dremelboy

hi nitro you want to use a 15x8 to a 16x6 on your 120 i have a 16x6 on mine at the moment and flyes very well but i am going to put the 15x8 on to get a bit more speed out of her for those big loops flew mine yesterdayfirst time since the mods she's still got it but same old problem with our grass stip the retracts just arnt up to it so have done some mods to the wheel wells so when the bend the dont get stuck and stall my servo locks like it mite work if not then il stick my euro kits in il post some pics when i get my camra sorted

hummingbird111

Flew the ole' P-51 today, boy what a sweetie pie, this thing flys great and does well with the 2 retract servos also.[sm=thumbup.gif]

Q8Nitro

hi guys,

well i'm sorry about not writing earlier but i was flying my mustang whenever i got a chance
maiden flight was great with no problems at all, i was worried since it's the first bird i assembled but thanks god everything went good, i flew mine and still flyin it with a 13*9 prop ( OS FS120 ) and she flys great, a bit fast when aproaching for landings but still easy to manage. all i have to say is woow, i love this bird. now i'm thinking about a giant scale mustang but don't know which one to buy.

this is a photo that i took few days ago of my P-51 and a friend's DagoRed.

flyboy12

My Feedback: (57)

Nice birds nitro. I have one coming in this week and it will be outfitted with a Saito 125 and roobart air retracts. And I have a T/F G.S. Big Bueatifull Doll I am working on with a DL 50 and all the good stuff on it.

flyboy12

My Feedback: (57)

Hey all, got my Petie 2nd in today. WOW what a kit I cant believe the way it is packed. Very good

grassroots

[8D]

TheDenter

Hi all,
I've read from the first page and I feel like I've learned a bunch!!!
Mine should be here TODAY! wooo hooooooooo
This will be my first ARF and I plan on doing the reinforcing I've read about here.

hummingbird111

Flyboy12 & TheDenter---- you guys let us know how the builds go, and don't forget to post some picks, have fun.-----i plan on getting the Hangar 9 version in the future just for comparison but so far i think World Models has them beat,.


---------------VAROOOM!!!----------->

Billville

My next 60 size mustang will be the Top Flite ARF. It's ugly to me, but I'll strip it and do it Reno style.

It's heavier than the WM and H9 I think, but man is the detail so much better. It will be interesting to see which one flys best.

Bill

TheDenter

I had to send back my hor. stab. becauce the elevators wouldn't fit over the fuse.
Sooooooooo a little more delay..........maybe the wind will subside a little by the time I get this thing done?!?

Has anyone here put foam around the fuel tank?