Author Topic: Yatsenko Gas Shark - electric conversion while maintaning gas option (Read 3871 times)

jose modesto · « **on:** February 16, 2012, 07:08:33 AM »

At the urging of Orestes Hernandez,I have converted a Yatsenko Gas Shark to electric. The model can be flown as electric or gas.
Electric combo
Motor:Axi2828-12
Battery:hyperion 2500Ma 5s
Timer: hubin FM9
Controller: Castle 45
weight removal:engine,tank,muffler and fuel=20oz
electric combo same weight for the Axi system
The photos show 2 motor conversion one with the Platt and the other with the Axi
The platt system is heavier than the Axi system(use of heavier motor and aluminum mount) the model balanced nose heavy.

jose modesto · « **Reply #1 on:** February 16, 2012, 07:10:55 AM »

add photos of platt install
Aluminum mount made by good friend Jim Damarrel

jose modesto · « **Reply #2 on:** February 16, 2012, 07:13:32 AM »

Photos of Axi install
Jose Modesto

jose modesto · « **Reply #3 on:** February 16, 2012, 07:18:39 AM »

completed model with Axi install
Jose Modesto

Steve Fitton · « **Reply #4 on:** February 16, 2012, 07:36:11 AM »

Is this using two different nose sections, or one nose section with interchangeable motors?

jose modesto · « **Reply #5 on:** February 16, 2012, 07:59:12 AM »

One nose section. This way a real comparison of gas VS Electric power. Same model same CG with the Axi system.
Orestes wants to try electric powered shark,this way he can evaluate the power package and make a decision on electric.
The challenge with the separate fuse front section is that the wing take apart hardware is in the nose section. Alignment of multiple noses is real difficult.
Working on a new shark with the wing take apart hardware in the rear of fuse allowing multiple fuse front end.Electric and gas
with the current gas models this is one way to convert to electric and maintain the GAS option.
Jose Modesto
PS: you and Derek sound like the ST60-VS- pipes arguments when you talk electric. Remember how that turned out.I was on the loosing end the last time.

Dean Pappas · « **Reply #6 on:** February 16, 2012, 08:19:52 AM »

Jose,
That sounds like historical perspective.

Dean

jose modesto · « **Reply #7 on:** February 16, 2012, 08:38:05 AM »

Dean you lived that period. Does it sound the same to you. I'm happy to be on the winning side this time
Jose modesto

Derek Barry · « **Reply #8 on:** February 16, 2012, 08:52:57 AM »

Quote from: jose modesto on February 16, 2012, 07:59:12 AM

PS: you and Derek sound like the ST60-VS- pipes arguments when you talk electric. Remember how that turned out.I was on the loosing end the last time.

Wait a minute, how did my name get brought into this? I have been a good boy lately.

Derek

Derek Barry · « **Reply #9 on:** February 16, 2012, 08:55:57 AM »

and FYI I personally think that electric is much better than that stock gas shark set up. I never could get the one I have to run right, I always wanted to put a PA in it but I am not willing to put that much effort into a plane that I cant fly at the Nats.

Derek

jose modesto · « **Reply #10 on:** February 16, 2012, 10:00:42 AM »

I will agree that the electric Shark should be better.
Orestes has done pretty well with his gas Shark 2 NATS win,Two second place,3 USA team trial placing and one 3rd place world medal. Not bad for a stock motor. (Orestes motors are not stock)
If you had reached out we could of helped you with your Shark and toning your motor.
The reference to you and Steve F was in relation to the ST VS pipes. Your current thoughts on electric reminds me of my arguments against the pipe system back in the eighties.
You and Steve remind me of those times.
"HOOKER STUNT" as the models were always on their backs
I'm glad to be on the winning side this time.
Derek don't get left to far back,Electric will rule the NATS real soon.
Jose Modesto

Steve Fitton · « **Reply #11 on:** February 16, 2012, 10:30:01 AM »

Don't think I'm not watching electric very carefully. I may even make an electric research plane in the next year or so.

jose modesto · « **Reply #12 on:** February 16, 2012, 10:48:22 AM »

Steve drag Derek with you. Electric has to many advantages to ignore.
So are your comments humorous if so please add emotion stickers to your comments.
Looking forward to seeing your electric models
Jose Modesto

Derek Barry · « **Reply #13 on:** February 16, 2012, 12:43:52 PM »

Quote from: jose modesto on February 16, 2012, 10:00:42 AM

I will agree that the electric Shark should be better.
Orestes has done pretty well with his gas Shark 2 NATS win,Two second place,3 USA team trial placing and one 3rd place world medal. Not bad for a stock motor. (Orestes motors are not stock)
If you had reached out we could of helped you with your Shark and toning your motor.
The reference to you and Steve F was in relation to the ST VS pipes. Your current thoughts on electric reminds me of my arguments against the pipe system back in the eighties.
You and Steve remind me of those times.
"HOOKER STUNT" as the models were always on their backs
I'm glad to be on the winning side this time.
Derek don't get left to far back,Electric will rule the NATS real soon.
Jose Modesto

You must not have seen the thread on this forum about me flying Jim Smith's electric at KOI.

Derek

Steve Fitton · « **Reply #14 on:** February 16, 2012, 01:09:40 PM »

http://stunthanger.com/smf/index.php?topic=24872.0

Either hit the link or scroll down to my post called "another electric first" a bit down the page, Jose, and you will see where Derek's latest e power comments are.

As far as the weenie roast comment on the other thread, I didn't think a softball like that thread needed a smiley emoticon. You will notice that on this thread I am not busting on you or anyone, just asking normal questions.

Wynn Robins · « **Reply #15 on:** February 16, 2012, 02:32:57 PM »

more great woke Jose - I gotta ask - how do you tighten the bolts on the LHS of the motor once you have it in place - bolts are from the rear to to blind nuts on the spinner ring.......

does the other cowl come off as well?

Thanks

Dennis Adamisin · « **Reply #16 on:** February 19, 2012, 07:21:25 AM »

Another beautiful set-up Jose!

jose modesto · « **Reply #17 on:** February 20, 2012, 07:51:29 AM »

Thanks Dennis. The beauty of this conversion is the ability to fly the same model with the spec gas engine and electric at the same weight and CG. If anyone has remaining doubts about electric power,this model will show them the viability of the electric package.
Jose Modesto

Steve Fitton · « **Reply #18 on:** February 20, 2012, 11:40:54 AM »

I think the e power will be a great improvement Jose. Other than yours, the Yatsenkos, and the Miami guys, I have not seen a Shark with a good consistent motor run with the Retro 60.

jose modesto · « **Reply #19 on:** February 20, 2012, 12:35:43 PM »

Steve.the question is how many have you seen.Derek and Kent. I have had 3 gas models,Orestes has four,Josias has had 3. All with great motor runs.
The Retro 60 is the best 2/4 motor on the market.
Changes to motor 1)change needle to Pa 2) open muffler 3)NO nitro fuel 4)use Yatsenko props.
Jim Damarel has a great running Retro in a RSM shoestring,the 2/4to die for. As Brett has stated "the Retro is what the tiger 60 wanted to be"
I have converted a Gas Shark to electric with (removed all gas hardware)mixed results.the Shark with the gas electric option flyes great with either system (gas/electric
I have an all electric Shark that needs to be finished.That's the model I presented at the 2011Nat's. That one I have high hopes for.
Hope you are right on the electric shark
Will Moore has an electric Shark,he says is the best model ever.
Jose

Derek Barry · « **Reply #20 on:** February 20, 2012, 12:57:07 PM »

I think I would put PAs as the best 2 4 break motors on the market, well off the market now...

I like the sound of the Retro but I do not like the power, and I have had mine running good before, just not every time like Josias, Orestes, and you Jose.

jose modesto · « **Reply #21 on:** May 02, 2012, 07:58:20 AM »

Gas Shark electric conversion,up date with new battery mount.
the mount is made of light ply with velcro battery hold down. the model is a little top heavy requiring some clay on the landing gear.
this model can be flown as a gas with Retro 61 or with axi 2826-12 hyperion 5s 2500. great way for guys to experience electric power with out having to build a new model. You also get to test electric and gas in the same model.
The model with the platt is nose heavy and requires the battery to move back,in order to move battery you have to remove rear tank mount and create new mount for gas tank. I dint want to do this so i changed to the Axi system lighter without changing tank mount.
Jose Modesto

Dennis Adamisin · « **Reply #22 on:** May 02, 2012, 01:48:12 PM »

Jose: maybe you can confirm this (or not)

I heard that Orestes had lost his practice site and was in a bind, is the electric Shark a pragmatic solution for him?

EDIT:
Forgot to add, NICE install(s)

jose modesto · « **Reply #23 on:** May 02, 2012, 02:39:09 PM »

Dennis. yes he did loose flying site electric is an option for him as it will allow him to practice with out attracting to much attention,while maintaining the gas option.
he is getting ready for the worlds but wont take electric overseas. He has not committed to attend the Nat's as of this time.
sina and i have new models with the through firewall motor mounting system. Thanks again for this innovation. The through firewall has allowed us to have one hatch (battery) that allows access to motor and all electronics.
Thanks for sharing this development.
Jose Modesto

Dennis Adamisin · « **Reply #24 on:** May 02, 2012, 07:29:32 PM »

Quote from: jose modesto on May 02, 2012, 02:39:09 PM

Dennis. yes he did loose flying site electric is an option for him as it will allow him to practice with out attracting to much attention,while maintaining the gas option.
he is getting ready for the worlds but wont take electric overseas. He has not committed to attend the Nat's as of this time.
sina and i have new models with the through firewall motor mounting system. Thanks again for this innovation. The through firewall has allowed us to have one hatch (battery) that allows access to motor and all electronics.
Thanks for sharing this development.
Jose Modesto

NO CHARGE Jose! Just glad it works for you.