Please login or register.

KRCM

Recent Posts

Pages: 1 ... 8 9 [10]
91
Float Flying at Deseronto / Re: Float Flying Basics
« Last post by Deerslayer on July 26, 2018, 09:24:15 AM »
Are you sure that stuff is rigid enough? The EPP foam in ARF's is more rigid, and is stronger in 'tear-away" resistance. I suppose you could use a thin coat of fibreglass.
It is quite strong. Sands very nicely. Put one layer of Tough tape on the bottom, from tip to the step, for abrasion resistance. Fibreglas, with its epoxy, adds unnecessary weight for little gain over using either Tough tape or just packing tape. A spine of, perhaps 1/4" square balsa along the top centerline, full length, to attach blocks or pads for mounting hardware.

For what the hobby industry charges for floats, it is worth a try to make your own.   Make at least one spare pair, then if yours get broken and hot-glued enough to exceed the Flypaper Golden Ratio, you won't be grounded (or should we say, "watered"?).
92
Float Flying at Deseronto / Re: Float Flying Basics
« Last post by ganguy on July 26, 2018, 08:07:14 AM »
Are you sure that stuff is rigid enough? The EPP foam in ARF's is more rigid, and is stronger in 'tear-away" resistance. I suppose you could use a thin coat of fibreglass.
93
Float Flying at Deseronto / Floats Material - Any interest?
« Last post by Deerslayer on July 26, 2018, 06:45:28 AM »


I located a source for 3" thick styrofoam sheets, the kind used in basement insulation. This stuff is ideal for making floats, wings, fuselages, etc. They are rather pricey and come in a much larger size than I would likely ever need.
Cost is $52 + tax for a 2 foot by 8 foot sheet. This is larger than I will be able to transport in my car, so I would end up cutting a sheet, anyway, probably into two 4 foot sections.

Would anyone else be interested in a shared purchase of a sheet?

My immediate need is for a set of 28 inch floats, for which I have already made  the required template for hotwire cutting the blanks. I may make one or more additional template sets for smaller floats. Another alternative is to bandsaw out floats, as this works very well with the pink or blue styrofoam.
94
Float Flying at Deseronto / Re: Float Flying Basics
« Last post by ganguy on July 25, 2018, 01:43:02 PM »
I need practice. So far I have made 5 water take-offs, and only one successful landing!
95
Float Flying at Deseronto / Re: Float Flying Basics
« Last post by ganguy on July 25, 2018, 01:41:05 PM »
Members should know that Deseronto Club hosted a float fly last Saturday, and because of the wind there was no flying. However we all had a great time, a terrific barbecue, a swap shop, and lots of talk. The next one should be fun! Thans Walter!
Gary - your idea of a Deseronto Club Events category on our site is great.

Reg
96
I sent an E-Mail to Doug of GRAUPNERUSA asking if it was possible to program the throttle cut switch to be mixed with throttle stick position at low throttle before the throttle cut would rearm the motor.


Doug’s response, “COOL IDEA, I WILL WORK ON IT”.
97
Float Flying at Deseronto / Re: Float Flying Basics
« Last post by Wilf on July 24, 2018, 10:37:20 AM »
Thanks Gary, I had the diagrams of which I shared before, but I did not have the article which explains in great detail how to set them up. This was and is a very good article on building and setting up floats. I have flown with floats for a number of years, but I had forgotten about balancing the floats once on the airplane.
98
Here are a couple of things which you may wish to consider:

1. Always use the same switch for Throttle Cut, regardless of the model. It should/will become part of your mental checklist for any time you handle a model and will be foremost in your mind if you need to quickly kill a motor.

2. On Spektrum radios, I use the A switch, which some folks think of as the "Gear switch" - it may even be labelled as such on some radios. It is easily reachable with my Throttle hand and it is fairly clear of other switches. To set Throttle Cut, this switch is pulled toward me. That way, if the radio gets bumped or I brush against the switch, it will not be released such that the motor can start.

3. But, what if you actually use the "Gear switch", either for retracts or, as is sometimes the case, the so-called Gear or 5 Channel is dedicated to being the Mode switch on a stabilizer or other device? Well, the H switch, over on the other side may be a good second choice. A better solution, I think, is to do a Channel Assign and move that channel's controlling switch over to another switch.
99
Float Flying at Deseronto / Float Flying Basics
« Last post by Deerslayer on July 24, 2018, 08:21:43 AM »
Perhaps this is a good place to store some floats information, as some of us may be adding floats to existing land-based planes, or upgrading existing setup.

Atttached is the original RCM article by Mr. Cunningham, from several decades ago.

100
Even with the normal Throttle Cut set up properly (refer to previous posting), some folks are concerned about having  additional protection to ensure that when perhaps their Throttle Cut switch gets bumped while the Throttle stick is partially advanced, the motor will not activate. Not a bad idea for those times when you may be working around the plane on the bench yet it is not convenient or feasible to remove the prop, tie down the aircraft, disconnect power to one of the motor leads, etc.

Here is a very simple solution that will take you about 2 minutes to set up. This is specific to Spektrum but may be similar for other brands:

Choose a switch that you wish to be your secondary means of disarming the Throttle channel. Set up a Mix:

THR > THR
Rate: -100% -100%
Offset: -100%
Trim: Inh
Switch: Switch D ( for example)
In the next line, darken whatever box(s) representing the switch position(s) where you want this safety cut-off to take effect.

Refer to the attached screenshot.

As long as (Switch D here) is in one of the positions (1 or 2 in this example) where this Mix is active, you have disabled the Throttle stick from control of the Throttle Channel. You should have already set the Throttle Trim = 0, via the Trims Menu, so there is no way to move the Throttle Channel away from its -100% or lowest position. Even if you bump your normal Throttle Cut switch. In order to power up the motor, both switches will have to be set in the correct position (0 in this example).

This secondary disarming switch can be either 2-position or 3-position. Just set the position(s) where you want it to disable the Throttle stick.

However, none of this matters if you fail to use it!
Pages: 1 ... 8 9 [10]