Yet another Corona build in the works - RC Groups
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Jan 16, 2004, 01:50 PM
Registered User

Yet another Corona build in the works

It seems there will be quite a few new Coronas flying around soon

I received my package from Mike Roffee last week, so I'll be diving into the build this week. It's going to be a pretty standard setup:

Mega 16/15/3 + CC 35
8 cell GP3300 batteries

everything else is stock.

It seems that most people are using 2 4 degree grips rather than the 6 + 4 the manual mentions. Would you recommend I do this from the start?

I'll post construction pics as it comes along. I can't wait to get it in the air!

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Jan 16, 2004, 01:57 PM
Registered User
Welcome Brian.

Yes, especially at the start, use the 4 degree grips. It makes it take a higher RPM to hover, which makes it more stable.

Unless you are flying at several thousand feet altitude, which gives you the higher head speed all by itself.

Jan 17, 2004, 07:10 AM
SCAT-R-D's Avatar
Welcome to THE place to find great Corona info.
I would recommend going with the (2) 4 pitch grips from the start as well. As Don said it will give you higher head speed which will help stabilize the rotor disk. I could not belive the differance when I changed mine out. What was a good flying machine if a bit sluggish, changed to a great flyer!

You've got a good motor/esc and a fine heli, remember to build your crutch square and true and you will have a great flyer too.

Hope this helps

Jan 19, 2004, 08:16 PM
Registered User
Thanks for the tips! I'll post my progress as there is some

Jan 20, 2004, 12:03 AM
Crashing more than flying
Powmaster's Avatar
halljb -

Yes, it appears that several Coronas were sent out last week. I got mine Friday and have been working with it since. Crutch and main rotor finished. Should have it ready to fly by next weekend but I still need batteries - waiting for them in the mail. You and I have the same motor and esc setup. I did receive both the 4 and 6 grips and may use both 4's as suggested by derway.

I'll be interest to know how your first flights go. Please post here. I'll let you know how mines goes. Been practicing with the G2 for several weeks and am pretty good. I will be VERY interesting to see how the Sim and Real worlds co-exist.
Jan 20, 2004, 06:17 AM
Hooked Heli Human
gmaster's Avatar
congrats.. you will love the corona.. its cool.. that it seems there are more new heli owners after xmas around Jan/Feb then anyother time during the year.. i, too, was new last year and started building mine in Jan

welcome to the club
Jan 21, 2004, 11:18 AM
From Earth to the Moon!
albireo's Avatar
It's a great machine. I fly it everyday. Use the 4x4 grips, it's a noticeable improvement in stability.
Have fun! Don't forget to stop by and let us know how it goes.
Last edited by albireo; Jan 25, 2004 at 12:16 AM.
Jan 25, 2004, 12:15 AM
Registered User
After some delays, I finally got to work on it tonight. At this point, the crutch is together (really easy build so far).

Once the canopy goes together, I'll start on the rotor. I assume that's the hardest part.

Jan 25, 2004, 12:28 AM
Crashing more than flying
Powmaster's Avatar
Update on my Corona project -

Tail finished
Main Rotor finished
JR Landing Gear installed (tie wraps)
Motor installed

To do -

Install radio
Install gyro
connect motor to esc
Loosen the Main Rotor gear, stiff and not easy to move (it was before I installed it to main shaft). Any hints on what to look for?

Getting close. Unfortunately, I have to drive 9 hours tomorrow but will continue during the evening.
Jan 25, 2004, 03:37 AM
From Earth to the Moon!
albireo's Avatar
Make sure you don't have the pinion too tight against the bottom gear, it can cause it to bind. Also, if you are not careful it's possible to tighten the motor screws on to the collar below the pinion gear and the motor won't turn. Check all your gears through the drive train and make sure none of them are so tight against each other that it causes one of them to bind. These gears don't (and shouldn't) be tight against eachother. Some people use a piece of paper for gap thickness; I just got used to jamming it tight and backing it off a wee bit...
Should be one of those.
Let us know.
Jan 25, 2004, 11:40 AM
Registered User
I received my corona package from Mike Roffee 3 weeks ago. Finished with all the mechanical work ( finally read the instructions carefully and loosened all the ball links, HUGE difference!). I have one question regarding the length of the right/left cyclic pushrods. In the construction manual, they specify a length for the rods that probably is set up for the 4/6 degree grips. Does anyone have an aprox. length for the 4/4 grip st up?? Thanks to all for the great advice in this forum, I can't wait to get flying.
Jan 25, 2004, 12:23 PM
Crashing IS Flying
jerrysimon's Avatar
Hey if you have the Reflex sim (just got it) then they have a great Corona.
Jan 28, 2004, 05:28 PM
Registered User
At this point I have the crutch and canopy done. I was going to put one of the gyro shelves on the upper rear, but I think I may hold off and mount the gyro on the front. I'm using the voyager gear, so there will be room up there.

I know it will be harder to adjust there, but I didn't like the way the canopy has to open wide when the gyro is on the back.

I've also finished the main rotor through the sub-rotor installation. No problems yet, but a tight fit for some of the screws.
Last edited by halljb; Jan 28, 2004 at 05:32 PM.
Jan 28, 2004, 06:09 PM
Hooked Heli Human
gmaster's Avatar
i cut the canopy near the back to leave area where the gyro shelf i made was.. was easy to do and worked great
Jan 28, 2004, 07:44 PM
BlueGrass Rules
mando's Avatar
Hey Brian , Looking good . Your at great point in the build to do the gro mount in the rear now . Here's a pic that might change your mind . With a little tab of velcro to complete off the closure.

Steve .

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