Ordered my F7F-3 with a pair of Admiral 3600mah 40C batteries. Found that they won't fit fully forward in the fuse (about 3/16 to tall). Can I get the proper CG with these batteries without carving out the front of the fuse?
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Originally posted by DPF4052 View PostOrdered my F7F-3 with a pair of Admiral 3600mah 40C batteries. Found that they won't fit fully forward in the fuse (about 3/16 to tall). Can I get the proper CG with these batteries without carving out the front of the fuse?Current Fleet: Flightline Tigercat, Flightline Bearcat, Eflite Corsair, ESM Skyraider, Pilot RC Yak-54 30%:corsair
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Originally posted by DPF4052 View PostOrdered my F7F-3 with a pair of Admiral 3600mah 40C batteries. Found that they won't fit fully forward in the fuse (about 3/16 to tall). Can I get the proper CG with these batteries without carving out the front of the fuse?
The 4000 40C (which are a newer version from a year ago) are slimmer and a tad longer and work perfectly in both the Tigercat and the P-38.
Best regards,Warbird Charlie
HSD Skyraider FlightLine OV-10 FMS 1400: P-40B, P-51, F4U, F6F, T-28, P-40E, Pitts, 1700 F4U & F7F, FOX glider Freewing A-6, T-33, P-51 Dynam ME-262, Waco TF Giant P-47; ESM F7F-3 LX PBJ-1 EFL CZ T-28, C-150, 1500 P-51 & FW-190
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Roaring top 3700’s are a perfect fit too! Check out www.rcjetwerx.comCurrently flying: Twin 80mm A-10, 80mm F5, 80mm A6, 70mm Yak-130, 70mm F-16v2,90mm Stinger 90, 70mmRC Lander F9F, Flightline F7F TigerCat, Phoenix 46 size Tucano, Flyzone L-39
Out of Service: 80mm Mig-21,64mm F-35, 64mm F/A-18
I Want: 80mm A-4, twin 80mm F4J Phantom
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Originally posted by stitch View Postanyone go fms site see that 1700 tigercat oh it,s pretty takes 6cell battery has 2 440kv motors 67in wingspan.silver or blue?Warbird Charlie
HSD Skyraider FlightLine OV-10 FMS 1400: P-40B, P-51, F4U, F6F, T-28, P-40E, Pitts, 1700 F4U & F7F, FOX glider Freewing A-6, T-33, P-51 Dynam ME-262, Waco TF Giant P-47; ESM F7F-3 LX PBJ-1 EFL CZ T-28, C-150, 1500 P-51 & FW-190
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The concensus on both forum sites is 70 with gear upWarbird Charlie
HSD Skyraider FlightLine OV-10 FMS 1400: P-40B, P-51, F4U, F6F, T-28, P-40E, Pitts, 1700 F4U & F7F, FOX glider Freewing A-6, T-33, P-51 Dynam ME-262, Waco TF Giant P-47; ESM F7F-3 LX PBJ-1 EFL CZ T-28, C-150, 1500 P-51 & FW-190
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Always whichever pushes the CG aft the most.
When mains swing parallel to the "main spar" they don't change CG when they go up and down.
Nosewheel almost always swings back which pushes CG back.
There are VERY few models that have the main wheels swing forward. Quite a few where they swing aft.
So in general practice, check wheels up.
Then double-check wheels down, but that will almost always show the CG moved forward, which is fine.
Knowing WHY helps.
This is why almost all glow and gas models the CG check is tank empty The tank is forward of the CG so the worst case is with it empty.
I had a pusher power glow model that had to be checked tank full. The engine and tank were both behind the wing.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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So, here's what I've found...
First, let me give all the credit to coming up with this idea to Warbird Charlie, we got into a discussion back in December about the lack of power in the FlightLine F7F as compared to the FMS version.
CB came up with a great alternative, the FMS 3948 KV760!!
So, using the same ESC and stock props, I have mine mounted and at full throttle there is a 39A draw according to my Watt Meter.
Now, the tricks to the setup are :
1)You need the X style FMS motor mount.
2) the leads to a FMS motor are smaller than the FlightLine ESC plus so you need adapters
https://hobbyking.com/en_us/4mm-male...-3pcs-bag.html
Installation requires redrilling the X mount holes, or drilling new holes in the firewall to mount them.
The stock motors are 600KV so there is an increase of 160kv per motor!
That should give her a bit more poke.
According to Charlie, the prop shafts that the 760's come with is what he uses to mount the LX B-25 props he uses on his F7F, so that's another plus if you're thinking of that route
Grossman56Team Gross!
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Thanx for the accreditation and the wattmeter looks good ;)..........now gitRdun and in the air then tell me/us what the tired Cat can do with a bigger Tiger in the tankLOLWarbird Charlie
HSD Skyraider FlightLine OV-10 FMS 1400: P-40B, P-51, F4U, F6F, T-28, P-40E, Pitts, 1700 F4U & F7F, FOX glider Freewing A-6, T-33, P-51 Dynam ME-262, Waco TF Giant P-47; ESM F7F-3 LX PBJ-1 EFL CZ T-28, C-150, 1500 P-51 & FW-190
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Originally posted by Lon View PostWhy not the 880kv upgrade?Warbird Charlie
HSD Skyraider FlightLine OV-10 FMS 1400: P-40B, P-51, F4U, F6F, T-28, P-40E, Pitts, 1700 F4U & F7F, FOX glider Freewing A-6, T-33, P-51 Dynam ME-262, Waco TF Giant P-47; ESM F7F-3 LX PBJ-1 EFL CZ T-28, C-150, 1500 P-51 & FW-190
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