ROCKY1405

My Feedback: (6)

My hobby-shop owner mentioned the same thing to me about the frayed or poor contacting servo signal line. I'll continue to check everything - it ALL was new when installed and I really tried hard to keep all wires neat and non-chafing but it is amazing on an airplane with 10 servos, how small a BIG fuselage can get in a hurry when you install it all and hook it up.
Thanks for the thoughts on the matter!!
Rocky [8D]

spitfire66

Hello,

I was wandering about the internet and was looking at troybuiltmodels and found this 4 blade prop by biela. Do you think that this p-51 style prop at 19x8 would be a good match with the dle 55 engine? I saw it recommended on the chart, but I am left to wonder if anybody has one or has tried one. Thought some of you might be interested. I would like to hear your thoughts...

http://www.troybuiltmodels.com/items/BP198-4.html

oconcj

My Feedback: (1)

Hi Spitfire

Biella Props are great. I'm not sure if that engine can turn that much prop.

Chris

spitfire66

I only thought it would be possible as some people are turning 22x8 props with their dle 55. I figured losing the standard pitch or diameter per blade would be sufficient for a 3 or 4 blade. The 19x8 I thought shold work out from what I have read, but I have just now bought my first gas engine so I am a novice in training. I read a lot and I am in the research stage of what I want to do. I man can dream right???

fujiman

My Feedback: (133)

19x8x4 should work. you can always check with DLE or the prop manuf. and see what their thinking is on it.

luckyb

The engine manuf. and the prop manuf. always seem (to me ) to overstate the power available or the efficiency of their product. I watched several world class pilots struggle with 4 blade props and end up using them for static only. I've only seen them work well on the big radials. The 4 blades sometimes won't allow the engines into their good power ranges. I'd hate to see someone kill a good plane for the want of a certain look or such. The only way to really know(since there are so many variables) is to get one and test it on your combo. Just my thought............Doug

ROCKY1405

My Feedback: (6)

Hi Guys: Yesterday I finally got out to my shop and started to really try and track down the gremlin that has been causing the servo glitches in my P-51. I'd put it off as long as I could because its been such an evasive problem I was just plain sick and tired of messing with this model. After a lot of poking, prodding, twisting, and tugging on every servo connection I could find I had been unable to get it to twitch on command, so to speak. BUT, at random times it would cycle or twitch the servo on the retract air valve. In desperation I started to use a screwdriver handle and began tapping on the airframe in proximity of the Rx. When I did that I could get the servo to twitch so I knew I was onto the trail of what was causing the problem. I had a pal come over and after a lot of detective work and not a little luck we isolated the problem to a bad joint in the Rx. I dug out a new Futaba R607FS Rx and installed that and then, no amount of tapping or doing anything else would cause any of the servos to twitch so I feel pretty confident that I have found what was causing the problem. Luckily for me, the problem was on the retract valve servo and occasionally on the throttle servo and not on any of the others or it would have cost me this model. The Rx is still under warranty and will be going back to Tower Hobbies later this week. During my investigation I did call Smart-Fly again and spoke to "Bob" there. I was using him as a sounding-board and while he was very busy he could not have treated me better - he was cordial - helpful - patient - and he went out of his way to make me happy. It was not his product that was causing my troubles and I want everybody to know that because earlier I had mentioned I suspected it was and it turned out I was wrong.
The p-51 adventure continues! I love the way this model flies, its a real sweetheart!
Have a good one!
Rocky [8D]

MSC

My Feedback: (5)

Rocky,

Good to hear you've isolated the problem. After reading through your ordeal I suspected the receiver to be the culprit. I've had issues with servo extentions and so it's good to physically check your connections. Like all of our planes we have to continue to execute a little TLC and maintenance once in a while to keep things right....

greecer3

My Feedback: (10)

Anyone have any install pictures or advice on making a zdz 60 fit? I dont want to cut the side of my new leo cowl. Any mufflers that will work?

ROCKY1405

My Feedback: (6)

Yesterday I got in two really nice flights with the P-51 and am happy to report that there were no "glitches" or bad stuff happening on it at all now that I have replaced the defective Rx. Every time I land it tho, I am glad I did the L.G. reinforcement work before I started to fly it because no matter how careful you are, once in awhile you are gonna have a less than perfect landing. That's my story and I'm a-stickin' to'er. [8D] And, yes the oleo's worked very well, and NO, there was NO damage. Honest, you can check!!

Doomking

My Feedback: (38)

I still love my 72mhz gear.....2.4 can wait.

ROCKY1405

My Feedback: (6)

Yeah, I'm not all that convinced its such a "great" improvement myself. []

fujiman

My Feedback: (133)

why do we always fight new tech????????

rc34074

My Feedback: (5)

We "fight" new tech because the people who sell it aren't always willing to stand behind it when they have faults. You can argue that some people don't follow the directions or don't read or something else, but people are people and if you are going to sell to the general r/c flyer that kind of stuff is guaranteed to happen. So these companies need to either accept it or they will feel hassled by the guaranteed/inevitable response from the typical pilot, and they will whine about it either within the company or online here.

2.4 is a great idea. Perfection will come from gradual improvements. But noone should be mad or even surprised when these issues come up whether its in radios, engines, servos, arfs etc.

If you don't want to be surprised you should only buy items that have been sold for several years so any problems they have are well known before you buy them. So that is what some people are doing.

But if you buy the new stuff and you are realistic you will know that every now and then one of those issues will cost you some money, whether for repairs or for a new plane or radio, etc. Some sellers will stand behind their products better than others, etc.

Anyway I'm done typing, and I will wait to see allt he interesting posts that happen now .

Ed

ROCKY1405

My Feedback: (6)

Oh, I'm not fighting new "tech" at all, but I am surprised at how the 2.4 stuff I've seen has shown a pretty darn perplexing failure rate at my field here on the MN tundra this past season. My Rx went bad on this P-51 and last Sunday I watched a Pal's giant scale P-47 with the 2.4 Rx have the throttle and rudder servo's cycling back and forth while in flight. It's flown for 2 seasons w/o any troubles, it passed a range check so the problem caught us totally by surprise. We were just barely able to get the model down before everything else went out of control too. Between the two of us, we have about 100 years of successful model building and flying experience and if we are having trouble with this 2.4 stuff, I figure a LOT of other people are too. Its heart-breaking to spend the money, time, and expertise to get one of these models in the air and then have a component fail and cause its loss. We both have had less trouble with the 72 MHZ equipment over our years of R/C flying than we've had with the 2.4 and we've only had the 2.4 equipment for about 3 years. I'm just telling you what I've seen at my field. I'm not flaming anything or trying to start a fight.
Best Regards,
Rocky

Bdsbob

My Feedback: (20)

I am starting a TF P-51 Giant ARF build shortly. I am planning on installing Sierra retracts, JR8611A servos and a ZDZ 80.

I haven't found any pictures of this plane with a ZDZ 80 in it. Does anyone have a picture they could share?

Thanks!

RoysterDW

Im about 70% through my build of my TF P51. Using a DA50 with a Secraft floating engine mount. Have few questions but will go through this long thread and hopefully find some hint, tips and mods to make my build life a bit easier!

Will post up some pics soon!

fujiman

My Feedback: (133)

major tip!!!!!!!!!! reinforce fire wall/eng. mount area!!!!!!!!! install the horizonal stab relocation kit and reinforce that area of fuse.!!!!!!!!!!!! these arfs and arc kits are built very light in all the wrong places!!!!!! do the wing spar mods. and landing gear mount mods., also. all these are in this l-o-n-g thread.

RoysterDW

install the horizonal stab relocation kit??

GSNut

My Feedback: (8)

[b] Needed (Modification) on version B if I remember right. also covered in this thread somewhere probably by Spychalla.

Cheers[b]

fujiman

My Feedback: (133)

yes!!!!!! TF put the dang thing in the wrong location (too low) check the tread for details and for ordering from leo spychalla.

AirWizard

My Feedback: (3)

Must be the B model because my D flies fine without it.

RoysterDW

How do you tell what versiom one has?

AirWizard

My Feedback: (3)

The P-51D has the bubble canopy

RoysterDW

Ah OK you guys are referring to the actual P51 (B,D) not the Top Flites build version. (Derr) In that case I have a P51D.