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Search: Posts Made By: Bob93447
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Forum: Seaplanes
06-08-2017, 01:16 PM
Replies: 609
Views: 101,352
Posted By Bob93447

RDIV, I am enjoying watching your...

RDIV,

I am enjoying watching your progress. It looks like an interesting way to build planes. What are you planning to use for covering?
Forum: Seaplanes
05-31-2017, 09:04 AM
Replies: 609
Views: 101,352
Posted By Bob93447

Good Progress! What's the purpose of the extra...

Good Progress! What's the purpose of the extra structure in the center section?
Forum: Seaplanes
05-22-2017, 09:21 AM
Replies: 609
Views: 101,352
Posted By Bob93447

Northstar off the water, After a few...

Northstar off the water,

After a few successful test flights of my Northstar flying off of snow, I was able to do the "water maiden" over the weekend. I'm flying with a Hyperion 3026-970KV...
Forum: Seaplanes
05-08-2017, 09:03 AM
Replies: 609
Views: 101,352
Posted By Bob93447

Rob, The thread you are looking for is...

Rob,

The thread you are looking for is called "Northstar Redo" over on RCG. The author is pmisuinas. His NS came in at 5.5 lbs with a 4 cell lipo in place. Most of what he did was substitute...
Forum: Seaplanes
05-07-2017, 08:41 AM
Replies: 609
Views: 101,352
Posted By Bob93447

Rob, I believe you need to rethink your...

Rob,

I believe you need to rethink your strategy on the lightweight NS. If it is balanced correctly and you remove 200 grams of motor weight, which is behind the cg, you need to remove weight...
Forum: Seaplanes
05-03-2017, 08:28 AM
Replies: 609
Views: 101,352
Posted By Bob93447

Rob, I forgot to mention that I am flying...

Rob,

I forgot to mention that I am flying my Northstar from a lake at an altitude of 1900 meters. It makes a big difference when you use eCalc.

If you are looking to build a "go fast"...
Forum: Seaplanes
04-30-2017, 09:04 PM
Replies: 609
Views: 101,352
Posted By Bob93447

No, I am not thinking about moving the ESC into...

No, I am not thinking about moving the ESC into the pod, I will just move it back a few cm to the compartment that is just to the rear of the forward hatch. It will still require motor leads of at...
Forum: Seaplanes
04-29-2017, 01:57 PM
Replies: 609
Views: 101,352
Posted By Bob93447

Rob, The motor is a Hyperion Zs3026...

Rob,

The motor is a Hyperion Zs3026 with a 970 KV rating. Weight is about 200 grams and it has about a 70 amp limit. (Hyperion motors were manufactured in the same facility as Scorpion Motors...
Forum: Seaplanes
04-28-2017, 07:29 PM
Replies: 609
Views: 101,352
Posted By Bob93447

Rob, I am flying an electric Northstar and I...

Rob,

I am flying an electric Northstar and I located my rudder and elevator servos in the pylon. Both are 25 gram servos and even with that weight in the tail it balances at about 1.5" in front...
Forum: Seaplanes
02-03-2017, 09:50 AM
Replies: 609
Views: 101,352
Posted By Bob93447

16K rpm with a 10x7 3 blade must lead to an...

16K rpm with a 10x7 3 blade must lead to an insanely fast Northstar. Where is your best flying CG?

I'm still sorting mine out. I did not taper the ailerons which makes them quite sensitive. But...
Forum: Seaplanes
01-30-2017, 10:18 AM
Replies: 609
Views: 101,352
Posted By Bob93447

OLD Northstar finally gets airborne

I finally did the maiden flight on my Balsa USA Northstar which was given to me as a kit in 1988. Since the plane is currently located in South Lake Tahoe, the first flight was off of snow since...
Forum: Seaplanes
03-17-2016, 10:44 PM
Replies: 609
Views: 101,352
Posted By Bob93447

With the added downthrust the Seawind is so well...

With the added downthrust the Seawind is so well behaved getting off the water that I have shelved any idea of relocating the step. It is just not necessary to get a smooth, controlled takeoff. I...
Forum: Seaplanes
03-16-2016, 09:16 PM
Replies: 609
Views: 101,352
Posted By Bob93447

Good luck with your Seawind. I know with my...

Good luck with your Seawind. I know with my Great Planes Seawind the primary problem was getting it off the water; it had a horrendous tendency to porpoise on takeoff. For awhile I found that the...
Forum: Seaplanes
03-16-2016, 11:15 AM
Replies: 609
Views: 101,352
Posted By Bob93447

Cougar, Thanks for the information...

Cougar,

Thanks for the information regarding waterproofing. For the seams I will use the sticky stuff that sig sells. I have used it before and it works pretty well.

You mentioned...
Forum: Seaplanes
03-14-2016, 05:15 PM
Replies: 609
Views: 101,352
Posted By Bob93447

Cougar, Did you waterproof the inside...

Cougar,

Did you waterproof the inside of your Northstar? If so, any suggestion for what the use for a lightweight waterproofing?
Also, why the cover on the back of your Nacelle?

Bob
Forum: Seaplanes
03-11-2016, 03:47 PM
Replies: 609
Views: 101,352
Posted By Bob93447

Since I decided to go electric with my Balsa USA...

Since I decided to go electric with my Balsa USA Northstar kit which does not have the locking tabs shown on the original plans, I thought I would use some of the weight savings to put the rudder and...
Forum: Seaplanes
07-03-2014, 11:12 AM
Replies: 609
Views: 101,352
Posted By Bob93447

I plan to use the same outline of the cockpit...

I plan to use the same outline of the cockpit area as the removable canopy version. The difference will be that the triangle stock will be continuous from the front bulkhead back to the bulkhead just...
Forum: Seaplanes
06-24-2014, 07:15 PM
Replies: 609
Views: 101,352
Posted By Bob93447

I'm at the stage in the building of my Balsa USA...

I'm at the stage in the building of my Balsa USA Northstar kit that I need to make a decision regarding the canopy. Given the size of the working space, I'm thinking that a simple hatch, rather than...
Forum: Seaplanes
01-27-2012, 05:01 PM
Replies: 609
Views: 101,352
Posted By Bob93447

RE: Northstar mods - Tell me what you think

I was taking the global view. Everything that attaches to the vertical fin I consider part of the motor mount.

Bob
Forum: Seaplanes
01-25-2012, 12:01 PM
Replies: 609
Views: 101,352
Posted By Bob93447

RE: Northstar mods - Tell me what you think

Isn't the motor mount the best place to save weight when converting the Northstar from glow to electric?
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