sbrackets

Hey VooDOOVW

Same thing happend to me when I was charging my H9 AT-6 in the back of my van and the airfield. I remember that it was taking a long time for my 6V 2700 NiMh pack to charge. The last time I went to check on the pack it was smoking inside the foam wrapping. Luckly I was able to cut the battery loose from my plane before any damage occured.

But I could have lost my Plane, Van and any other auto that was parked next to me. I don't trust any battery when it's charging anymore.

Regards, Jim

dbronst3790

My Feedback: (2)

Glad things turned out as they did. Good reminder for everyone to be careful, it's not just Lipos that burn down the house.

mimoore67

My Feedback: (51)

Wow!

Firepower R/C

My Feedback: (10)

I am glad you came out ok, VoodooVW.
I have also had Nimh battery packs incinerate on 2 different occasions. One time I was charging a pack installed in a GWS Zero... walked away for a bit and came back to the whole front of the plane melted and smoldering. Evidence was there that it had been on fire!!! It was then that I found a new respect for Ni-mh and Ni-cds! I could have lost everything.

Speaking of batteries, what size and configurations are you guys putting in this plane? I have a JR 791 retract servo installed that I can't use a 5 cell with, but have a Hitec Optima 7 receiver and other servos that can take 5 cells. If I was to go with a separate battery for the retracts, what size can anyone recommend?

sbrackets

Hey Firepower

On the JR 791 servo, you must use 4.8 volts. They don't work on 6 volts. I run the 4.8 volt 2200 Mah NiMh on my mechanical retracts in my H9 p-47 .60 size, and the same battery pack in my H9 P-47 1.50. No problem and plenty of power.
.................................................. .................................................. .................................................. .........................................
Here is the way I have my two batteries packs set up in my planes.







Jim

Firepower R/C

My Feedback: (10)

What size do you use for the rx and the other servos?

jjkirby

My Feedback: (20)

iv been flying this plane for a few weeks now after getting burned out on it a year ago. I was wandering what flap and elevator mix you guys are using and think works best. I have a DX-7 radio with a OS 91 surpass in mine, thanks

dbronst3790

My Feedback: (2)

Ready for the DLE-20cc conversion maiden this weekend, if the weather holds.

With the 20cc, air retracts, 2,300mAh A123 in the stock location she ballanced perfectly at the recommended CG!

I should get an all up dry weight later today.


Xoar 16 x 8 prop.

VooDooVW

I've onlymanaged 3 flights before the short in the battery pack but I'd setup my JR radioto drop the flaps very slowly and can't say I noticed anyattitude changeswhen I dropped the flaps...

dbronst3790

My Feedback: (2)

10lbs 12oz

dbronst3790

My Feedback: (2)

Flew the re-maiden. The DLE-20cc feels just right for this plane.

[youtube]http://www.youtube.com/watch?v=b12kNE9t3nw[/youtube]

ultimate2

Congratulations for your gas-conversion, ... it flew beatifull, did you landed with flaps ?.
Manolo.

dbronst3790

My Feedback: (2)

Thanks Manolo,

The re-maiden flight had a few issues, but once in the air and trimmed if flew great and the DLE 20 ran perfectly.

The new air retracts didn't want to come up completely so I left them down, subsequent flights I had no problem with them. Ihad damaged the tail wheel in a prior crash when the elevator servo went out and I wasn't aware that it was free-wheeling and causing it to not run straight and true like it always does, and Iwas way out of trim on the elevator which almost put me into the ground on take off!

I've found that the recommended first position flap setting works great for me. I deploy it after I make a gear check pass and it tends to float just a bit but settles down before the turn onto base as the speed decreases.

P-51B

My Feedback: (5)

Hey all,

I just pulled my P-47 out to start assembly and had a hopefully quidk question. The manual indicates to use regular rotaion servos on both the flaps, with one mounted facing inboard.

I already have reversed servos to use for flaps and prefer them to both be more centered on the control surface. In looking at the flap it appears that the wooden mounting block for the conrtol horn is set up to allow me to do that.

My question is, am I seeing correctly, is the block long enough to allow flipping the one servo around to use a reversed servo?

CorsairJock

My Feedback: (90)

Don't remember how I did it, but I reversed a flap servo, and mounted the flap servos symetrically (instead of per plans), suggest you read early posts.

ultimate2

[8D]This morning I went to fly the Jug for the second time, I used full flaps on first landing and landed beautifull,.... More latter I will post some pics. On the second sortie, everything was fine, but landing gear failed, and doesn´t opened so I must did a belly landing near a wheat field close to the runway. hopefully, no damage at all, it was incredible, neither the sway braces, nothing,.... but when I checked what happened I finded a dead and burned Hitec HS 75 retract servo, so please what is a good retract servo for this airplane. No Jr, cause I´m using a 6V. battery. It is Futaba 136 G a good option ?. Also CorsairJock posted in earlier post that he used two standard servos for retract but I readed the entire post twice and could find more details or photos of this set up, so please, Mr. Corsair, can you post some pics and explain to me how you did your retract set up. I know that many of you are using air retracts but I want to keep on mechanicals.
Tx buddies.
Manolo.

Boomerang1

My P-47 uses air retracts but if you want to use mechanicals these may be what you are looking for.
Basically they are air retracts with an electric motor & screwjacks in place of the air cylinder plus
some electronics to make it all work.

http://www.e-fliterc.com/Products/De...ProdID=EFLG400

John.

dbronst3790

My Feedback: (2)

I went through several retarct servos (Hitec and JR) before Iswitched to air. If I was adding retracts today I'd use the e-Flite electrics.

ultimate2

[8D]Tx friends, it looks good, but maybe a little expensive here in Spain and difficult to find. A guy told me that I can find in a shop in Great Britain, also asked to the spanish E-flite dealer for that retract and he told me this morning that it is not avaliable here but he may ask for the next shipment.....[]
http://www.acro3d.com/public/phpbb3/...8920&start=465
Cheers.
Manolo.

P47Tbolt

My Feedback: (20)

here is a link to my T-Bolt being modified to a Razoback.

http://www.rcuniverse.com/forum/m_10...m.htm#10458390

phakur

My Feedback: (13)

Another retract question:

I am considering using the new E-flite electric retracts. Which fit better, the 85 or 90 degree retracts?

Also, can anyone provide feed back on how well they work?

THANKS!!

funkymeter2003

I used the lado retracts in mine, 85 degrees. They work great, I would think the e-flites would be similar. What a great airplane!

orthodoc

I used the eflite 90 deg. Think the 85s might be bit short of true vertical. 90s work great.

patniven

My Feedback: (36)

Manolo,
I've used the JR Sport RT-88 low-profile retract servo on 6 volts. Horizon Hobby lists some 6v specs here:
http://www.horizonhobby.com/Products...080#quickSpecs
Good Luck!
Patrick

CorsairJock

My Feedback: (90)

Mechanical Retracts with 2 Servo Operation Explained
In a nutshell, I used a pair of hi torq, low profile proportional servos mounted side by side, about 1/4" separating them (wing ribs joined at center of wing separates them).
There are several companies who make very simular servos, they are characterized as having the same profile/ shape as most retract servos, and about the same weight (about 1.2 oz).

They can be purchased with or without metal gears: I recommend the metal geared versions.
The cycle times are usually slightly slower due to the gearing, but they typically have between about 80 ~ 110 oz/ in of torque, which is plenty since each one only operates one leg (instead of one servo for 2 legs on typical/ conventional mechanical retract installation).
I usually buy mine from a place that used to be called Balsa Products, but now is known simply as BP, NOT to be confused with the oil spill company (maybe bad idea on their part?).

As installed, because the servos are separated by the wing rib rather than above it: they can be mounted a little lower, WHICH IS GOOD, because standard installation tends to position servo too high in the wing, resulting in linkage clearance issues and possible binding.

And of course, by using PROPORTIONAL servos: speed can be controlled by either a $10 aftermarket device OR the transmitter on some of the higher end models. AND, servo endpoints can be used to PRECISELY setup the linkage for optimum travel, rather than having to choose a precise location for linkage connections and adjustments.

I am extremely happy with my installation, I feel it is better than anything else, because I am able to set each leg to retract at a different speed, thereby looking VERY realistic.

Here is link to one servo option:
http://www.bphobbies.com/view.asp?id...85&pid=W776484