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        Build Log Top Flite 1/7th Scale P-51 ARF Build Log

#1 MattZC Dec 25, 2007 10:30 AM

Top Flite 1/7th Scale P-51 ARF Build Log
 
Hey guys,

For my main Christmas Present, I got the Top Flite 1/7th Scale Arf, (On order) and I am trying to figure out what gear to put in it.
I have heard that the AXI 4130 is a ok motor for the weight of this plane and I am assuming the AXI would go with a 70 amp speed control from Jeti, and probably a 6s 4000 pack.
I also need servo recommendations for this plane. It says on Top Flite's web site that it needs 7 Standard servos and one retract servo, but I am not going to use the Retracts that come with the kit, I am going with Robart Retracts. If I went electric electric, I would not need the throttle servo needed for gas.

http://www.top-flite.com/airplanes/topa0950.html

Merry Christmas to all!
-Matt

#2 flemsus Dec 25, 2007 01:07 PM

Hi. I did not know that you could still get eletric retracts, what are you looking at?
I have built in Giezendanner (electric, no more available) retracts in my H9 P-47 conversion.

Best regards. Flemming Sorensen

#3 MattZC Dec 25, 2007 03:14 PM

flemsus,
I have already purchased Robart retracts for the P-51.

Oh, sorry, I wrote the original sentence badly, I meant the plane would be electric, not the retracts. Very sorry,


-Matt

#4 Robert Belluomini Dec 27, 2007 09:39 AM

I bet you have nice scale retract speeds with those units.
There is a new company that makes electric drives for retracts.
Look here:

https://ws04.ipowerweb.com/smartweb/lado/product4.asp


Quote:

Originally Posted by flemsus
Hi. I did not know that you could still get eletric retracts, what are you looking at?
I have built in Giezendanner (electric, no more available) retracts in my H9 P-47 conversion.

Best regards. Flemming Sorensen


#5 MrN79 Jan 04, 2008 02:36 AM

I have one on order too, should be here sometime in January. Haven't decided on the Robarts or Century retracts, i'll have to wait and see what size wheel i can fit in the well, then i'll decide. I'm running the CC 85HV, E-Flight Power 60, and Flight Power 6S 5000. There is a great article in one of the flying magazines (sorry not sure which one) that discussed Terry Nitsche's electric conversion of the Hangar 9 1.50. Same magazine discussed installing air retracts in giant warbirds. I would definately recommend finding the magazine (i'll post again with the name of it)

#6 RCMustang Jan 04, 2008 08:45 PM

2 Attachment(s)
I had Century Jet Retracts in my TF 1/7 kit. I say had because the kit died many years ago. I still have the retracts. They were excellent quality. If I had two criticisms of them, they would be that they were heavier than the Robarts and they required more modification of the kit because they were more beefy than the Robarts.

Overall, I would recommend them. I have the TF 1/7 kit and still have the retracts. At some time I plan on rebuilding the plane and I'll put in the CJM retracts.

Here's some pics.

#7 MrN79 Jan 04, 2008 11:57 PM

Great looking plane! What size wheels did you end up using with the Century retracts RCM? The Robarts maximum wheel size are 3 1/2", the Century maximum wheel size are 4". My plan is to recover my ARF, install tailwheel retract, wingtip lights, and install the rear exhaust scoop. I'm really looking forward to this project.

#8 RCMustang Jan 05, 2008 08:32 AM

They were actually 3 1/2" wheels. I had wanted to do 4", but the 3 1/2" definately looked and worked best in the wings. I was afraid of cutting away more material in the ribs needed to actually fit in the wheel. The 1/7 model is just not quite big enough to fit the 4" wheels in my opinion. Better builders will probably disagree, but it was not worth the effort for me.

Good luck on the tail wheel retract. I looked into that as well. I opted for less complexity in mine. The only other significant mod I did was working bomb drops/drop tanks. You can see them attached in the picture above. That was very easy. I'll put them on my next Mustang since I still have the doors. I made them removable in case I did not want the weight and power drain of the extra servos.

#9 MrN79 Jan 06, 2008 07:11 PM

I have a feeling i'm going to use the 3 1/2, even though the 4" would probably look better and more scale, but i'll have to see how things go and how much modding i have to do to make the 4" work. The working bombs/drop tanks is a cool option too, i may have to borrow some of that for my plane.

#10 MrN79 Jan 24, 2008 06:32 PM

Still no kit yet, but i've been told it should be here soon (before the end of the month).
I've decided to use the electric retracts from LADO. They are made for the .60 size 1/7 Scale.

#11 MattZC Jan 27, 2008 06:08 PM

Quote:

Originally Posted by MrN79
Still no kit yet, but i've been told it should be here soon (before the end of the month).
I've decided to use the electric retracts from LADO. They are made for the .60 size 1/7 Scale.


Hey MrN79,

Check Tower Hobbies again. Now they say early Febuary. Ugh. :(

-Matt

#12 MrN79 Feb 06, 2008 12:04 PM

Hi Matt,
my LHS has mine on order, he told me end of February now. Just gives me more time to gather all the necessary parts to convert it to electric. A friend of mine did an electric conversion on the TF P-51 kit, he used an E-Flite Power 60 with a CC 125 running 4200 mah 7S (3S/4S combo).

Mark

#13 Socomon Feb 06, 2008 02:39 PM

Anyone know if the thrust angle is built into the firewall of this plane or is it built into the engine mount?

#14 MrN79 Feb 07, 2008 12:22 PM

Doesn't say in either build manual (Kit or ARF), and not sure just by looking at it.

Mark

#15 Socomon Feb 07, 2008 12:51 PM

Yeah - I did not see it in the manual either. It makes the conversion easier if it is in the firewall.


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