3W F8F Bearcat
09-17-2015, 09:03 AM
#1
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3W F8F Bearcat
Can anyone tell me where I can purchase a 3w Bearcat. Also does anyone make proper scale trunion gear for the plane? I would be interested if there is a new in the box one as well depending on the age of the kit.
09-18-2015, 02:53 PM
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Thanks Greg. I was told that he does not import them anymore. To be honest unless I can find someone to make the trunion gear I am stuck. Years ago I had a Bearcat that came from Norway and the gear that was made for it here in the US was not up to the task and after several attempts finally scrapped the project and sold the plane. I got really good at gear up landings though.
If anyone reading this knows where I can find drawings of the full size gear that would be a start.
If anyone reading this knows where I can find drawings of the full size gear that would be a start.
09-19-2015, 04:12 AM
#4
JJP,
i emailed them awhile back asking if they do still order them and there response was yes..
I'm just as much as a fanatic about the Bearcat as you are and the only thing holding me back from ordering one is the gear.
Darryl at Sierra Giant scale has said he would do them if he had at least 6 orders for the gear.
i emailed them awhile back asking if they do still order them and there response was yes..
I'm just as much as a fanatic about the Bearcat as you are and the only thing holding me back from ordering one is the gear.
Darryl at Sierra Giant scale has said he would do them if he had at least 6 orders for the gear.
Last edited by Greg Wright; 09-19-2015 at 06:06 AM.
09-22-2015, 02:13 PM
#8
09-22-2015, 02:27 PM
#9
The first few prototypes will probably be built up wings/tail so as to keep costs down.
3 piece wing split just outside of the gear, so as to allow transport on its wheels.
Separately molded canopy frame. Integrated vertical fin molded into the fuselage.
to answer the question on scale. I try and make all of my scale models as accurate as possible for those who wish to compete with them. Im a bit OCD with things and dont mind completely starting over to fix a problem. The TA152 im doing in all composite had two sets of wing plugs built because the first set has the trailing edge kink in the wrong location.
If the demand to do the bearcat in all composite is there, we will do it, as we are slowly beginning to tool up a new business to offer large scale models that aren't the commonly seen ones.
09-22-2015, 02:39 PM
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Thomas please consider for the gear a simple air over oil instead of the springs. If you look at how Lai Kai of Skymaster fame does his gear it is really good. I have a large scale Comp ARF Corsair and it uses Sierra gear.
The problem with the spring gear on a 50 lb plane is it need to be so stiff that it really transmits shock and loads to the air frame. I also have a Skymaster A-10 which weighs in over 60 lbs and with the air of hydraulic it settles down so gently on the oleo's that it helps the air frame not to mention not launching the plane back into the air.
Sorry for being so long winded.
The problem with the spring gear on a 50 lb plane is it need to be so stiff that it really transmits shock and loads to the air frame. I also have a Skymaster A-10 which weighs in over 60 lbs and with the air of hydraulic it settles down so gently on the oleo's that it helps the air frame not to mention not launching the plane back into the air.
Sorry for being so long winded.
09-22-2015, 02:52 PM
#11
Thomas please consider for the gear a simple air over oil instead of the springs. If you look at how Lai Kai of Skymaster fame does his gear it is really good. I have a large scale Comp ARF Corsair and it uses Sierra gear.
The problem with the spring gear on a 50 lb plane is it need to be so stiff that it really transmits shock and loads to the air frame. I also have a Skymaster A-10 which weighs in over 60 lbs and with the air of hydraulic it settles down so gently on the oleo's that it helps the air frame not to mention not launching the plane back into the air.
Sorry for being so long winded.
The problem with the spring gear on a 50 lb plane is it need to be so stiff that it really transmits shock and loads to the air frame. I also have a Skymaster A-10 which weighs in over 60 lbs and with the air of hydraulic it settles down so gently on the oleo's that it helps the air frame not to mention not launching the plane back into the air.
Sorry for being so long winded.
That said, my partner (who does the machine work) has developed his own version of air/oil shocks for his 1/4 P47. So its a possibility for the bearcat.
Now, that said. 100% of the RC strut/retract manufacturers are clueless on proper spring rate selection for their products.
With a properly selected spring rate, the model should easily compress the spring in the strut slightly while sitting on the ground. It will also be able to absorb any anomolies on the ground during use. Then during landing, you can run a second spring with a much higher spring rate to absorb those bad landings, or you can select a spring rate for the single spring setup so as to account for that.
Ive done some testing on the above and have found what works for a 15# airframe of a Vought V-173 flying pancake. Im not going to up the scale and use my experience from the pancake on the 152. If it works like it does on thd pancake, i see no real need for the extra complication of the air/oil struts.
I just spoke with my partner a little bit ago and it seems we will probably just end up doing the all composite from the get go. It'll be quicker on getting the project started.
09-23-2015, 02:48 PM
#16
Well the Cad model is done and all sliced up. We are going with an F8F-2 variant.
Im finishing up the final details on the design of our new plug machine, so once we get that up and running, we will begin making the plugs.
Expect to see a thread somewhere around the first of the year.
Im finishing up the final details on the design of our new plug machine, so once we get that up and running, we will begin making the plugs.
Expect to see a thread somewhere around the first of the year.
09-25-2015, 04:39 AM
#20
You should do a molded top hat type mount but make it so the Whole firewall is removable from the plane. This makes it so much easier if you need to remove the engine.
Then the builder can mount the fuel tank and Servos for the engine right on the firewall and everything would remove in one piece. This is how i did the firewall on my Wildcat i just finished.
Then the builder can mount the fuel tank and Servos for the engine right on the firewall and everything would remove in one piece. This is how i did the firewall on my Wildcat i just finished.
Last edited by Greg Wright; 09-25-2015 at 04:44 AM.
09-25-2015, 03:54 PM
#21
That is probably how we will end up doing it. The cowl Trailing edge and the wing leading edge are very close to each other, so if you split it at those points it leaves a very small sliver of fuselage between them. Not insurmountable proble by just adding a little fuselage to the inside of the cowling with a lip for the cowl to slide flush with the fuse.
Im really particular about attachment bolts being visible. On the 1/4 TA152, no wing attachment bolts are visible, i would like to carry this over to the bearcat. For the 3 piece wing, it'll be the typical wing tube setup, unless i can talk my buddy into doing a set of foldable wings
Im really particular about attachment bolts being visible. On the 1/4 TA152, no wing attachment bolts are visible, i would like to carry this over to the bearcat. For the 3 piece wing, it'll be the typical wing tube setup, unless i can talk my buddy into doing a set of foldable wings
09-29-2015, 06:02 PM
#22
As far as engines go, anything with dimensions similar to a Moki400 will fit full concealed in the cowling. We will have the firewall position so those ambitious enough to stuff a moki 400 into it will be able to.
The CAD data for the fuselage, cowling, canopy and 2 piece horizontal stab is all complete.
The CAD data for the fuselage, cowling, canopy and 2 piece horizontal stab is all complete.
10-01-2015, 06:21 PM
#25
Price wise... To early to say, but id estimate around the same price as a Carf P47.
The materials for our new cnc machine start arriving monday, ao hopefully by the new year plug construction will begin