Guillow's Hawker MK-1 Hurricane 16 inch

frankben · Post by **frankben** » Thu Mar 17, 2011 8:10 am

Hello,

My name is Frank and I' m new hear. I am building a Hurricane 16.5 inch for the first time. I hope its going to succeed.
This forum has been a great help for me and I decided to join the club!

You can see my work on http://www.rc-forum.be/phpbb2/viewtopic ... eae27e17d3

Sorry it is in Dutch, I from Belgium

supercruiser · Post by **supercruiser** » Thu Mar 17, 2011 11:27 am

Frank,
Welcome! Your Hurricane looks very nice.
Interesting technique filling portions of the wings with foam.

frankben · Post by **frankben** » Thu Mar 17, 2011 11:55 am

yes, that was an idea, but you can note use dope on those sections, it will eat the foam so I used acrylic varnish on the wing.

frankben · Post by **frankben** » Fri Mar 18, 2011 7:25 am

I think there will be a problem. To balance the 16.5 inch hurricame I have to put 0.63 ounces of lead in the nose so the total weight will be 1.8 ounces.

The wing area is 42.9 sq/inch so the wingload wil be 6.04 oz/sq ft, then the stall speed is 12.2 miles/h

Will this thing fly with rubber power ???????

supercruiser · Post by **supercruiser** » Fri Mar 18, 2011 11:36 am

No.
For rubber power an optimum weight would be 25 grams. Thats about
1 ounce. They will fly o.k. at 32 grams total weight.

BillParker · Post by **BillParker** » Fri Mar 18, 2011 1:20 pm

For Frank:

frankben · Post by **frankben** » Fri Mar 18, 2011 4:29 pm

Thank you for posting my pictures Bill!

Well I just did do a glide test with a total weight of 50 grams and so far it glide very well, it flew strait in a soft angle to the ground. I will see later if de rubber engine will hold the plane in the air

Even if you build the plane as light as possible I think the tail will always drag the aircraft backwards, so we have to put weight at the nose or am i doing something wrong?

Frank

BillParker · Post by **BillParker** » Fri Mar 18, 2011 8:19 pm

some guys like to move the back motor peg forward one bulkhead.

with the 500 series, you build as light as you can, and cross your fingers...

supercruiser · Post by **supercruiser** » Fri Mar 18, 2011 8:57 pm

frankben wrote:Thank you for posting my pictures Bill!

Well I just did do a glide test with a total weight of 50 grams and so far it glide very well, it flew strait in a soft angle to the ground. I will see later if de rubber engine will hold the plane in the air
Even if you build the plane as light as possible I think the tail will always drag the aircraft backwards, so we have to put weight at the nose or am i doing something wrong?

Frank

I would say that most models require nose weight. Especially, scale models.
My Guillow Spitfire weighed 32 grams, 7 grams of that was nose weight.
It flew o.k. It would climb but, had a steep glide angle. Wing loading was .695 grams/sq.in. My unit of measure for determining wing loading is grams/square inch. I know that is improper to mix English and metric but, thats how I've done it for years.

BillParker · Post by **BillParker** » Fri Mar 18, 2011 10:22 pm

The metric system is something they thunk up to cornfuse us country boys...

frankben · Post by **frankben** » Sat Mar 19, 2011 10:03 am

So, my project has come to an end. It is long not perfect but I am pleased for now. I didn't flew it yet but I hope it will whit his 51 grams, 1.79 oz!

oh yes, I hope the wrinkles in the decals will disappear because they are still wet.

Lets hear what you think, for the worse or the better

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John G Jedinak · Post by **John G Jedinak** » Sat Mar 19, 2011 11:31 am

Nicely done!!!

cliffm · Post by **cliffm** » Sat Mar 19, 2011 11:45 am

Very good. Don't get too discouraged if it does'nt fly like a record breaker on your first build as it takes a little time and experience to gather the little tricks involved in getting these pieces of wood and paper to do what you wish. If you pre-dampen the fabric where you are going to apply the decal you may find it solves the wrinkle problem. Have fun.

ADW 123 · Post by **ADW 123** » Sat Mar 19, 2011 6:09 pm

Next time, make sure we keep it light for flight. It looks great though. I bet the paint weighed a ton...

frankben · Post by **frankben** » Sun Mar 20, 2011 7:01 am

Thank you guys

I tried to fly it but it does not, the rubber has not enough power for the 51gr (much to heavy)! however it float nice. I am not disappointed, it was a great experiment to learn of.

I want to build now the p-40 but I make an other topic for that.