RunRyder - Fury (Basic) .50 Ratio

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Miniature Aircraft Nitro/Gas Helicopters > Fury (Basic) .50 Ratio

Hobbytime
Heliman
Location: East Texas

Just curious what gear ratios you are running in your .50 Fury?

The basic kit comes with 9:1 ratio The head speed needs to run around 1,900 in order to get the engine in the power band which OS states in the manual to be 1.8ps @17,000 rpm. I would imagine optimal head speed would be 1,850 which would be obtainable by 9:3 ratio. The problem at hand is MinAir does not offer a 93 tooth main gear for the basic kit (which means they are no longer available for the older kits either. The only solution is to replace the main gear with a split gear constant drive system at the cost of approx. $160
I do prefer the split gear setup but it is not what I had in mind for a low cost .50 size heli.
Please let me know what you are useing for ratios and how it works out.
Maybe I am off base. Maybe I should leave it alone

Steve......

01-03-2002 Over year old.

beedub
Senior Heliman
Location: Arlington, Tx

You must be bored!

Work is slow eh? Just stay away from the mushrooms and the wife will be happy!

So minature said no go on the 93 tooth? Hmmmmm.......

Here skiddy,skiddy,skiddy.........

Have fun Steve!

01-03-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

David,
I checked with MinAir yesterday and got am email from Tim and he said they do not offer this gear anymore! I also did order one from my LHS and the invoice back from MinAir said "discontiued item"
Tim also said the only way to do it is to change to the split gear constant drive assembly.

Steve.....

01-03-2002 Over year old.

Dr.Ben
Elite Veteran
Location: Richmond, VA, USA

Let's make sure we are all on the same page.

The black 0549-93 93 tooth maingears are gone.

The 0865-93 93 tooth delrin gear is still used in the Fury 50/60 Expert, the ProIIK, and the Fury/YS80 kit. I BELIEVE the 60 Basic has a 9.0 gear in it, unless the box is incorrect.

The constant drive system uses this gear, and the new style non constant drive auto hub 0865-4 I thought used that gear as well.

For David and me, tell us EXACTLY which part number you have been told is out of stock. What is the part number of the auto hub in your Fury kit? Is the part number of your 90 tooth maingear 0865-90?

I think we can get to the bottom of this.

Ben

Ben

01-03-2002 Over year old.

beedub
Senior Heliman
Location: Arlington, Tx

Read his post again

He states he does not want the constant tail drive, so which is left?

01-03-2002 Over year old.

Dr.Ben
Elite Veteran
Location: Richmond, VA, USA

Re: Read his post again

Quote
Originally posted by beedub He states he does not want the constant tail drive, so which is left?

Steve's post was read in great detail. MA sells a 100% constant drive tail for $160 and a nondriven auto hub with gears for $99.95. David explained the distinction in his post. I thought they were including the newer style auto hub in the basic kits. They aren't.

Ben

01-03-2002 Over year old.

beedub
Senior Heliman
Location: Arlington, Tx

Yes, David did explain it in his post. But the question is when did MA start selling this other setup? All of the X-cells I've ever owned had a constant tail on them so I did not even know these other units existed( 2 piece auto hub that is). The ones I have always seen are the ones that come with the basic kit. Is MA going this direction on their kits? If they are it kinda limits people like Steve to what they can use without spending more $$$.

Of course we are getting a little off topic here, Steve also asked about what people have used and how they compare.

Anyway,

01-03-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

Quote
Originally posted by DavidH Steve, You would also have to have your motor mount milled off some where the motor could move forward with the 9.3 to 1 ratio. If you do the auto hub conversion and later on you decide to do the constant drive tail, you want have to buy the whole unit, you can just buy the conversion for that also Hope this helps you David

David, would you have to mill the motor mount? There is already spacer plates on the mount and I just assumed these would be removed.

Back to the original question......... What ratio is optimal for this heli with the OS .50???????????????????

01-03-2002 Over year old.

beedub
Senior Heliman
Location: Arlington, Tx

Thanks

Thanks for the info David!

01-03-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

Fury .50

David, Thanks for your input. I think I will go with the 9.3:1
in your reply you mentioned some part #'s

2) 115-46 plates
1) 115-96
1) 115-98

Are the 115-46 the plates on the main frame that hold the clutch assembly in place?

And what are the xxx-96 & xxx-98?

Thanks Steve.......

01-03-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

David,
Again, thanks for your help! I will check it out this evening and let you know how it turns out.

I have a .60 CT with a constant drive in it. I think I will pull it out and see how everything lines up with a 93 tooth gear that I got from Brian (beedub).

This used be be easy before we all started worring about ratios.

Regards,
Steve........

01-03-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

Basic Fury .50 With 93 tooth Gear

Last night I got the Fury down as I wanted to be sure what was involved in making this change. There has is apparently no good info out there regarding this. With my available budgit and the lack of available parts I wanted to see just what was needed.

I had a constant drive that I removed from my CT .60
I removed the 90 tooth gear from it and installed a 93 tooth on the drive hub.
My existing hub from the Fury was removed. Also removed was the clutch access plate pn # 115-46 (this allowed for the larger gear)
The Basic .50 kit uses shims under the motor (pn # 115-47 x 2)
These shims were removed and the clutch assembly was moved toward the front allowing for the larger gear.
(I would also like to note that the basic kit only has 1 clutch access plate and it is located on the right hand side of the frame)
All parts were assembled with the bolts installed in the top 2 holes of the bearing block and the top 2 holes in the frame and clutch access plate.
This setup allowed a perfect gear mesh and no additional parts were required.
This would be a simple and inexpensive upgrade if MinAir would have not discontinued the black one piece gears (pn # 207-93)
Hope this info helps someone

Thanks to all who took the time to respond
Steve........

01-04-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

Fury Clutch Access Plate

David,
That is what I have always thought!
The Fury Basic .50 (sn# 10150042) is what I have and it only has one clutch access plate and it is on the right frame assembly. Left frame doesn't even have the cutout (left frame pn# 115-15) (right frame pn# 115-36) if you check out the manual #115-101 pages 22 & 23 you can see the detail of the frames.

Steve....

01-04-2002 Over year old.

Furyous
Senior Heliman
Location: Detroit, Michigan

Frames for 50

The original Fury 50s had different frames, than the Fury 60. However they are now the same and share a part number. This may be where your discrepancy arises.

Kevan

01-04-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

Fury Frame

This really does facinates me......
This Fury is only 5 weeks old and was shipped from MinAir only days prior to that. Already I have an "old style frame" There also have been numerous changes to the the .60 size machines. My question is why the change? Is this a poor design? Is it unsafe? Or are we just a test-bed or beta site for MinAir? I personnally don't mind being a beta tester but when problems are found why do we have to spend our money finding the solution. Why get rid of the old-style main gears?
the work just fine and they are cheaper..........Wait,,,,,,,,,that may be the key! MinAir sold us these kits cheap and plan to make up the differance.
It is very agravating that in order to change the gear ratio I have to spend around $150. That being the case they should discontinue the basic models and only sell the expert. I would rather layout the extra money up front then to have to spend it now. I could use the $150
dollars to repair a crash intstead of spending it to upgrade it to where it should be.

Steve.......

01-04-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

Fury .50

David,
The kit was puchased on the 23rd of november 2001 it was purchased at Aero Hobbies in Lewisville, Texas

I was there when UPS showed up and bought it right then.

Steve......

Aero Hobbies did receive 2 .60 size expert kits with that order.
The only reason I got a basic kit was because that is all that I could find.
and I did want a .50 size . I already have a ST, CT and a Carbon SE
along with two other manufactures .60 size helis.
I was not wanting to burn anymore fuel than needed, And I was very impressed with the .50 size Hirobo. I felt that MinAir could do it better.

Right now the Hirobo is the most bang for your buck in the .50 market.
........

01-04-2002 Over year old.

Hobbytime
Heliman
Location: East Texas

Fury .50 UPDATE

I have run the Fury with the new gear ration this weekend and it did make quite a differance. The Ratio is now 9.3:1 with the OS .50

I would recommend this ratio to anyone. (The answer to my original question)

The Fury expert comes from the factory with this ratio. The only problem is that most dealers aren't going to stock the .50 because most would rather have a .60

MinAir should still offer the 207-93 gears for the rest of us. As you read in my other posts I had to install a constant drive hub and use a delrin 93 tooth gear. With that said and done all is fine with the Fury.

My head speed is set to 1830 which puts my engine at approx. 17000
The engine is happy there.

Steve......

01-08-2002 Over year old.

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