ElectroStreak build..

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retiredVTT
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Re: ElectroStreak build..

Unread post by retiredVTT » Fri Jan 27, 2012 1:20 pm

Hi Al,

I'm glad to have taken you down "memory lane"...except that was a violent return to reality!
I sure remember my first experience with pulling up while inverted...my litlle Ace Whizzard was instantly rekitted..!

Once this ES is sanded to shape it should be quite slippery looking. I'm going to try a Mega inrunner motor (22/20/3) on a 4S pack with either a 8" or 7" prop (depending on amp draw) to propel it .

If these messy weekends continue..this build will finish up soon..!

Bill
Bill
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MAAC #13708

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retiredVTT
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Re: ElectroStreak build..

Unread post by retiredVTT » Fri Jan 27, 2012 3:43 pm

Few more pics..

..the motor is a sturdy Mega 22/20/3 which should be up to the job on 4S,

..the little JR servos are new and seem to have considerable torque..I mounted them on spruce rails on the bench, then dropped them onto previously attached balsa rails in the fuselage.

..several bottom hatches made from 1/16" ply will blend in with the 1/16" balsa crossgrain bottom pieces to allow access to motor, battery and servos. The grooved landing gear block is visable.

Bill
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Bill
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Re: ElectroStreak build..

Unread post by retiredVTT » Sat Jan 28, 2012 12:26 am

More progress tonight;

..the wing attachment points were completed, so that allowed the closing up of the fuselage bottom, which meant completing three hatches so access to the vitals can still take place.

..the landing gear was formed from 3/32" wire and a small (1.5") set of wheels installed, (for those times when the worms are active on the field..!)


Bill
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Re: ElectroStreak build..

Unread post by retiredVTT » Fri Mar 02, 2012 9:15 pm

...covering is done, servo's installed and connected, motor fired up and showing 605 watts on 4S with a weight of 31 oz. with no battery and 42 oz with a 4S-2650mah lipo pack.

Bill
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astroflyer
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Re: ElectroStreak build..

Unread post by astroflyer » Fri Mar 02, 2012 11:34 pm

another run down memory lane! especially that top picture. she's a clean little beastie, far nicer than the porker they put out as a ARF later on. :lol:

have fun flying her. you'll enjoy it.

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Re: ElectroStreak build..

Unread post by trevor » Sat Mar 03, 2012 8:36 pm

that looks like a little rocket!!! :D
what do you mean low rates and expo???

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Re: ElectroStreak build..

Unread post by retiredVTT » Tue Jun 19, 2012 12:51 am

Getting the ES ready for the July 1st weekend...hooked up the electrics tonight.

Put a 60 amp esc behind the Mega, with just a little 8/4 prop and saw 40 amps and 510 Watts ...yup, that will work..!

Bill
Bill
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david3484
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Re: ElectroStreak build..

Unread post by david3484 » Tue Jun 19, 2012 7:30 am

Looking forward to seeing it.
Dave M

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retiredVTT
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Re: ElectroStreak build..

Unread post by retiredVTT » Tue Jun 19, 2012 10:00 pm

Got it to balance just fine with a 4S 2650mah pack and total weight is 43.7oz ...just an ounce and a bit over the suggested weight of the original kit which was powered with a brushed Goldfire 450 size motor pumping out maybe 300 watts.

I think she's ready..!
(Well, maybe some big red maple leaves for the wing..)

Bill
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Re: ElectroStreak build..

Unread post by retiredVTT » Tue Jul 03, 2012 6:35 pm

I added some dark blue stripes to the bottom for orientation and maidened the ES on July 2nd. It flew well with a 8/4 prop on 4S with the Mega 22/20/4 motor however the motor came down hot to the touch. Although speedy, it was not mind bending so a trip to the motor closet was the order of the day.

The choice for a motor replacement was a Turnigy 3050-2300. It's the same physical size as the Mega but it's one ounce heavier, but this will allow the battery pack to be placed rearward some, instead of being jammed up front.

I ditched the spinner to allow better airflow through the motor and replaced the 8/4 prop with an APCe 8/6.

I did a bench test with the Wattmeter and the figures were just ridiculous...it's not legal to publish them here..!

The thing will be to use throttle management to see whether this combo can be tamed, and only bring the hammer down when the man with the radar gun is in position..!

Bill
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