Thread Tools
Mar 07, 2016, 08:47 PM
Registered User
Swaggerjacker's Avatar
Any updates?
Sign up now
to remove ads between posts
Mar 10, 2016, 06:17 AM
Registered User
the RV in parked in the wing rack ATM. we have a large scale racing coming to our field and I need to get my Seagull MSXR ready. I'm still in 2 minds on re-powering the RV a 120 four st would be good and stick the 160 twin in my VQ Grass hopper
Mar 10, 2016, 09:31 PM
Registered User
lfd47's Avatar
My build is on hold. Had to send my motor back to RCGF. It was damaged on delivery. RCGF took care of it and it is on the way back to me.
Also, what servos are you using. Do you think the Futaba S3151 digital servo will be okay. I bought a bunch when they were on sale at Tower.
Speed: 0.21 sec/60 @ 4.8V
Torque: 43 oz-in @ 4.8V
Dimensions: 1.6 x 0.8 x 1.4 in (41 x 20 x 36mm)
Weight: 1.5oz (42g)

I can't find any info on how much torque is required on the servos for this plane.
Mar 11, 2016, 09:30 PM
Registered User
I think you are a little low on the servo power for a 70" plane. if you ran a 6volt pack that would get you close to where I think you should be. and lets face it you aren't flying it 3D. I like to be safe and run around 67 -83oz
Mar 11, 2016, 09:32 PM
Registered User
http://www.mnbigbirds.com/Servo%20To...0Caculator.htm if you want to check here is a program that may put your mind at ease. I'm going to give it a run
Mar 12, 2016, 07:28 AM
Registered User
lfd47's Avatar
Quote:
Originally Posted by propwas1
I think you are a little low on the servo power for a 70" plane. if you ran a 6volt pack that would get you close to where I think you should be. and lets face it you aren't flying it 3D. I like to be safe and run around 67 -83oz
Great info, I was thinking the 3151's were not enough. I plan on flying scale, but I like to tear it up once in a while... Thanks for your help.
Mar 14, 2016, 06:45 AM
Registered User
I ran Hitec 485 on the RV but on any thing bigger, Hitec 645 MG they are my go to servo, then 5645 digital for anything with a big surface the needs to centre spot on
Mar 16, 2016, 03:55 PM
Registered User
lfd47's Avatar
So I had purchased some of these Power HD LF-13mg to try. I have them in my Kaos 60. So far they have been great, no problems. I am going to put these in the RV-8.
http://www.valuehobby.com/radio-syst...3mg-servo.html
Mar 17, 2016, 04:34 AM
Registered User
13 KGs will be more than enough power
Mar 25, 2016, 08:55 PM
Registered User
lfd47's Avatar
Well I finally got the motor mounted. But that's it, been to busy working. The RCGF 21cc twin fits totally inside the cowl. I can't wait to get this plane in the air.
Mar 25, 2016, 09:16 PM
Registered User
have you had a chance to check the CG ? If I go with the 160 twin I will have to add weight to the rear, not too much, but I don't like adding weight anywhere
Mar 26, 2016, 01:52 PM
Registered User
lfd47's Avatar
No I haven't got that far yet. I will keep you posted.
Mar 31, 2016, 08:16 PM
Registered User
lfd47's Avatar
So tonight I did the throttle rod and mounted the ignition. I cut an access panel on the bottom behind the firewall. This is where I mounted the ignition. It is mounted to the bottom of the fuel tank shelf. I figured it would help keep a little more weight off the nose. Test fit the cowl. Just the tips of the exhaust pop out. Should mount up nice. I bought a silver and black prop from Red Wing rc. It matches the color scheme.
Apr 01, 2016, 01:51 AM
Registered User
lookin great you are starting to tempt me to put the 160 in mine
Apr 01, 2016, 08:58 AM
Registered User
lfd47's Avatar
Propwas1, go for it. The plane would be awesome with that motor. I think it can handle the weight.


Quick Reply
Message:

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Seagull Model Vans RV-8 Diamond Di lfd47 Scale Fuel Planes 2 Jul 26, 2016 12:50 PM
Discussion Seagull RV-8 propwas1 Scale ARF/RTF 3 Feb 20, 2016 07:58 PM