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scalefanuk · 09-06-2009, 05:21 PM

Hi Does anyone have experience of the Aerotech Yak 54 50cc? mine just does not fly great, i have tried c of g at manual position and forward and aft of this just is way too sensitive even with low rates of 20mm on elevator and 30% expo.
I have since heard other people here in the uk having the same problem, does anyone in the us know of this problem?.
Thanks Jt

MikeC3D · 09-06-2009, 09:11 PM

Use more expo....jk

DA2000 · 09-07-2009, 12:03 AM

Make sure the bearings didn't come apart in the elevator control horns. My stock horns did that, causing a lot of play and increased elevator null zone.

forgues research · 09-07-2009, 08:33 AM

	Quote: Originally Posted by scalefanuk
	Hi Does anyone have experience of the Aerotech Yak 54 50cc? mine just does not fly great, i have tried c of g at manual position and forward and aft of this just is way too sensitive even with low rates of 20mm on elevator and 30% expo. I have since heard other people here in the uk having the same problem, does anyone in the us know of this problem?. Thanks Jt

If its that sensitive, you are most likely tail heavy, add a bit of nose weight to start with.

Roger

John Blackwell · 09-07-2009, 08:44 AM

I have owned this plane put the gas tank under the wing tube, balance and fly .this plane is very sensative to balance .I promise you that if the elevator is sensative it is tail heavy.

scalefanuk · 09-07-2009, 02:56 PM

Thanks guys for your input, i cant understand the sensitivity as yesterday i flew it nose heavy it just doesnt make sense to me, maybe i have a bad airframe? my Hanger 9 27% Extra 260 was a joy to fly, maybe i sold the wrong model on

.

Jt

ex300sc · 09-07-2009, 04:10 PM

Hello

Use more expo and check the CG. I know a guy a few years back at an IMAC contest that flew it. He loved it. Try contacting the old owner of Aerotech and maybe thay have some input.

S.Dubai · 09-14-2009, 01:47 AM

We have the same problem here in Dubai with the Aerotech Yak its not stable at all

forgues research · 09-14-2009, 08:18 AM

I flew the 35% Yak from Aerotech and it was very stable and flew quite nicely,

You are tail heavy period. if you check the CG from the plans , there are chances its not right and simply add nose weight for the time being and try it again.

Roger

topflight36 · 09-14-2009, 10:09 AM

I would also say tail heavy. make sure you are balancing it at the right point.

scalefanuk · 09-15-2009, 11:00 AM

Hi,
i have had a few more flights this week and have got it somewhere near now, the c of g is definateley not where it is stated in the manual, its been a case of fly it move the battery and fly it.
I think that there must be a fault with my airframe as it seems too critical to get it feeling somewhere near comfortable not like my 2mtr sukhoi or Extra.
definately not my fave model.
Thanks for your replies
JT

Taurus · 10-03-2009, 07:06 PM

Hi all,

I've just bought the AeroTech YAK 54, unfortunately without an assembly manual.

Could anyone tell me, how I could get a hold of one ?
Thanks a lot.

Taurus

topflight36 · 10-04-2009, 11:20 PM

Check with Rob from Competition airframes on here he might be able to help you

danayak54 · 10-30-2009, 10:12 PM

I have one and u can pull this off line. I can scan and email if you cant find one

dana

	Quote: Originally Posted by Taurus
	Hi all, I've just bought the AeroTech YAK 54, unfortunately without an assembly manual. Could anyone tell me, how I could get a hold of one ? Thanks a lot. Taurus

scalefanuk · 11-29-2009, 06:24 AM

Hi Lads
It has been a while since i posted about my probs with my Yak, it is now sorted thanks to a clubmate.
The tailplane incidence was 2 degrees out , he corrected it and now flies perfect.
I would suggest people that are experiencing my problems check your incidence.

John

09-06-2009, 05:21 PM	#1
scalefanuk Flyin' Around Join Date: Sep 2009 Posts: 6	Aerotech Yak Hi Does anyone have experience of the Aerotech Yak 54 50cc? mine just does not fly great, i have tried c of g at manual position and forward and aft of this just is way too sensitive even with low rates of 20mm on elevator and 30% expo. I have since heard other people here in the uk having the same problem, does anyone in the us know of this problem?. Thanks Jt

09-06-2009, 09:11 PM	#2
MikeC3D 3D JUNKIE Join Date: Jun 2006 Location: SanAntonio,TX Age: 40 Posts: 3,386	Re: Aerotech Yak Use more expo....jk Last edited by MikeC3D; 09-07-2009 at 12:12 AM.

09-07-2009, 12:03 AM	#3
DA2000 Bad-ass Super Contributer! Join Date: Jan 2006 Location: Midland, Texas Age: 42 Posts: 642 Awards Showcase Total Awards: 1	Re: Aerotech Yak Make sure the bearings didn't come apart in the elevator control horns. My stock horns did that, causing a lot of play and increased elevator null zone. __________________ Daniel Rathbun

09-07-2009, 08:44 AM	#5
John Blackwell Bad-ass Super Contributer! Join Date: Oct 2007 Posts: 258	Re: Aerotech Yak I have owned this plane put the gas tank under the wing tube, balance and fly .this plane is very sensative to balance .I promise you that if the elevator is sensative it is tail heavy. __________________ J&J Tailwheels - Engineered R/C Excellence www.jjtailwheels.com

09-07-2009, 02:56 PM	#6
scalefanuk Flyin' Around Join Date: Sep 2009 Posts: 6	Re: Aerotech Yak Thanks guys for your input, i cant understand the sensitivity as yesterday i flew it nose heavy it just doesnt make sense to me, maybe i have a bad airframe? my Hanger 9 27% Extra 260 was a joy to fly, maybe i sold the wrong model on. Jt

09-07-2009, 04:10 PM	#7
ex300sc Bad-ass Super Contributer! Join Date: Apr 2009 Location: Bradenton FL Posts: 263	Re: Aerotech Yak Hello Use more expo and check the CG. I know a guy a few years back at an IMAC contest that flew it. He loved it. Try contacting the old owner of Aerotech and maybe thay have some input.

09-14-2009, 01:47 AM	#8
S.Dubai Uber Contributer Join Date: Aug 2009 Location: U.A.E, Dubai Posts: 176	Re: Aerotech Yak We have the same problem here in Dubai with the Aerotech Yak its not stable at all

09-14-2009, 08:18 AM	#9
forgues research Bad-ass Super Contributer! Join Date: Feb 2006 Location: Canada Posts: 3,189	Re: Aerotech Yak I flew the 35% Yak from Aerotech and it was very stable and flew quite nicely, You are tail heavy period. if you check the CG from the plans , there are chances its not right and simply add nose weight for the time being and try it again. Roger __________________ Sbach 342 http://www.rcxmachines-na.com Turbine spark ignitions Fiber Optic servo extensions Engines Standoffs

09-14-2009, 10:09 AM	#10
topflight36 In the weeds Join Date: Sep 2006 Age: 26 Posts: 2,563	Re: Aerotech Yak I would also say tail heavy. make sure you are balancing it at the right point. __________________ Power-HD On Air RC RED AERO

09-15-2009, 11:00 AM	#11
scalefanuk Flyin' Around Join Date: Sep 2009 Posts: 6	Re: Aerotech Yak Hi, i have had a few more flights this week and have got it somewhere near now, the c of g is definateley not where it is stated in the manual, its been a case of fly it move the battery and fly it. I think that there must be a fault with my airframe as it seems too critical to get it feeling somewhere near comfortable not like my 2mtr sukhoi or Extra. definately not my fave model. Thanks for your replies JT

10-03-2009, 07:06 PM	#12
Taurus Flyin' Around Join Date: Aug 2009 Location: Munich, Germany Age: 54 Posts: 2	Re: Aerotech Yak Hi all, I've just bought the AeroTech YAK 54, unfortunately without an assembly manual. Could anyone tell me, how I could get a hold of one ? Thanks a lot. Taurus

10-04-2009, 11:20 PM	#13
topflight36 In the weeds Join Date: Sep 2006 Age: 26 Posts: 2,563	Re: Aerotech Yak Check with Rob from Competition airframes on here he might be able to help you __________________ Power-HD On Air RC RED AERO

11-29-2009, 06:24 AM	#15
scalefanuk Flyin' Around Join Date: Sep 2009 Posts: 6	Re: Aerotech Yak Hi Lads It has been a while since i posted about my probs with my Yak, it is now sorted thanks to a clubmate. The tailplane incidence was 2 degrees out , he corrected it and now flies perfect. I would suggest people that are experiencing my problems check your incidence. John

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