Extreme-Flight 88" Yak 54 BUILD

[k8svrick]

The CG on mine is right in the center of the range. I am using a KS-1060 pipe and a 4" carbon spinner. I also put the smoke pump, battery, ign battery and choke servo up front along with the throttle servo in the motor box. There's a lot of stuff up there. Radio batteries are just behind the motor box. I haven't weighed it; guessing it's about 19 pounds.

[Bam Bam]

Hi everyone, i havent had time yet to read this whole thread, i have had the 110" russian thunder yak for a while and it's the best thing in the world. so i brought the 88" as well! i just recieved it and was a bit shocked at the weight of the main gear! it's heavy! heavier than the 110" gear! anyway i'm going to go with the gear from graphtec, has anyone tried this? is it a good fit? They claim that's it's half the weight of stock gear!

i think it's strange that it has metal gear considering that all the other planes i've had from EF have had carbon gear! even the 58" extra!

But hey, i not wineging! i love it it! cant wait to have them both finished next to each other!
Also i am using the DL-55 with RE-2 pipe. i am thinking maybe 13.5" header. anyone care to differ?

[leeMcCrory]

	Quote: Originally Posted by Bam Bam
	Hi everyone, i havent had time yet to read this whole thread, i have had the 110" russian thunder yak for a while and it's the best thing in the world. so i brought the 88" as well! i just recieved it and was a bit shocked at the weight of the main gear! it's heavy! heavier than the 110" gear! anyway i'm going to go with the gear from graphtec, has anyone tried this? is it a good fit? They claim that's it's half the weight of stock gear! i think it's strange that it has metal gear considering that all the other planes i've had from EF have had carbon gear! even the 58" extra! But hey, i not wineging! i love it it! cant wait to have them both finished next to each other! Also i am using the DL-55 with RE-2 pipe. i am thinking maybe 13.5" header. anyone care to differ?

Dont do it dude. The ef undercrackers are the best around. Ive x2 ef110s and a 88. Wish my 110s had metal uc legs. i sure wouldnt wanna harrier land the big yak like i do the 88. the metal legs are way more flexy n dont stress the wood as much on higher impact landings.ie deadsticks.
These planes are so light a few extra grammes helps to hold it down in a wind. So much chat about the lighter products being superior. I just dnt go with buyin bling stuff that doest last the test of time. Heres two ef planes on standard metal uc flying as light as one could wish for.-

YouTube - Broadcast Yourself.

my 88s 3 years old n still going strong. That metal uc is the best imo

[Cheech91060]

Lee - Excellent video
Do you find yourself having to reflex the metal gear frequently? Mine seemed to bow out very easily, enough that I broke a few props. Feels much more solid after moving to graphtech gear.

[JoeAirPort]

I'd never use anything but the aluminum. I had a pan cake recently on my EF Extra and the gear bent like a pretzel saving my fuse. I think Chris H. said he did a similar thing with this Yak at about 10 feet and all it did was bend the gear (engine flame out). There are many other stories like this.

[cjcyclesrc]

I saw the Gear save an airframe once. The plane pancaked from about 10' The only damage was a broke prop, bent landing gear, and a couple cracks on the cowl. The Aluminum gear does a great job of absorbing impacts and not transferring them to the fuse.

I talked to Chris about the very subject when the 110's were coming out with the carbon gear. Chris said he had to go with carbon on the 110 because of the weight. The 110 has a large gear and it would need to be thick to support the weight of a 100cc plane. When the aluminum was made thick enough it was very heavy. The Carbon gear is light and very strong. I've harrier landed mine many times. In the event of a hard hit the fuse would take the damage instead of the gear bending.

I wouldn't be that concerned about the weight of the gear. The 88" handles it fine. If you want carbon so it matches your 110" the Graphtec G2 would be the set to get.

[leeMcCrory]

	Quote: Originally Posted by Cheech91060
	Lee - Excellent video Do you find yourself having to reflex the metal gear frequently? Mine seemed to bow out very easily, enough that I broke a few props. Feels much more solid after moving to graphtech gear.

Yea i reshape it now n again. Thankfully without taking it off the fuss to do it.
Ive had a few deadsticks over the years. one in particular was during an inverted harrier no joke a foot off the tarmac runway. I was in mid conversation at the time with the clubs chairman about the firestation exercise going on over on the main runway and the engine cut.
Somehow i rolled it to upright, the wing tip just missed the deck and it landed on the wheels n broke the prop when it nosed over. All happened real fast but the undercarrage was bent back on itself by the wheel- all twisted round, but it bent back streight n still has plenty of strength
Ya cane beat a bouncy uc leg

[cjcyclesrc]

	Quote: Originally Posted by leeMcCrory
	Yea i reshape it now n again. Thankfully without taking it off the fuss to do it. Ive had a few deadsticks over the years. one in particular was during an inverted harrier no joke a foot off the tarmac runway. I was in mid conversation at the time with the clubs chairman about the firestation exercise going on over on the main runway and the engine cut. Somehow i rolled it to upright, the wing tip just missed the deck and it landed on the wheels n broke the prop when it nosed over. All happened real fast but the undercarrage was bent back on itself by the wheel- all twisted round, but it bent back streight n still has plenty of strength Ya cane beat a bouncy uc leg

Lee,

I enjoyed the video. Ya'll find some cool places to fly.

[JoeAirPort]

Yeah I saw this video in FG video area. Very cool. You guys have android stick skillz. These people tell me I'm good at my club. They wouldn't think so if they saw your videos. They just have no idea how sick some peoples skillz are. I need to go practice.

[ben_beyer]

I had some of the Graphtech G2 gear and it was good. I never did any harrier landings with but I had one hard landing on a deadstick and the gear did break. However, I had the aluminum as backup and there was no damage to the plane anywhere.

[cjcyclesrc]

	Quote: Originally Posted by ben_beyer
	I had some of the Graphtech G2 gear and it was good. I never did any harrier landings with but I had one hard landing on a deadstick and the gear did break. However, I had the aluminum as backup and there was no damage to the plane anywhere.

What plane did you have it on? I haven't heard of the new gear breaking. The laminated gear was bad about it.

[JoeAirPort]

I had my 30% Edge with Graphtech crack the fuse inside on a gusty wind hard landing (vertical member cracked on one side). I fixed the fuse and reinforced both sides while I was at it. The guy I sold it to had a hard landing and this time the gear was destroyed...not the fuse. With aluminum the fuse is usually fine.

[BR289]

The aluminum gear is best on the Yak....if your doing 3D mainly and harrier landings in particular, I wouldnt change it. The aluminum gear has saved many an airframe from being damaged. Its not really that heavy and that plane is light to begin with so it doesnt really much matter in the end. Its strong enough to to withstand rough landings and has enough "Give" to it to help protect the airframe.
The 110" uses Carbon gear because of the size and weight of the completed plane....then some people will add smoke and such adding to the weight which neccesitates the use of the stiffer carbon gear....
Blair

[ben_beyer]

	Quote: Originally Posted by cjcyclesrc
	What plane did you have it on? I haven't heard of the new gear breaking. The laminated gear was bad about it.

I had it on a WH CAP. It was a little over 17 lbs., I had a dead stick while doing a spin (forgot the high idle) and I was living in Colorado and it was summer so the air was pretty thin. It came down pretty hard on the gear and I had never had a problem with that gear ever. It was glad that the gear broke because like I said, it didn't do anything to the airplane; however, I throughly finished it off the next day at the IMAC contest....

[cjcyclesrc]

	Quote: Originally Posted by ben_beyer
	I had it on a WH CAP. It was a little over 17 lbs., I had a dead stick while doing a spin (forgot the high idle) and I was living in Colorado and it was summer so the air was pretty thin. It came down pretty hard on the gear and I had never had a problem with that gear ever. It was glad that the gear broke because like I said, it didn't do anything to the airplane; however, I throughly finished it off the next day at the IMAC contest....

The new gear just came out. You would have had the older laminated gear. If you go over to the IMAC this weekend check out Damon's Carden Extra with the new gear on it. It made different than the old graphtech gear. There is a video of his extra testing the new gear on Graphtech's website. http://www.graphtechrc.com/