Electriceddie
Posts: 330
Joined: 8/21/2002
From: Massapequa Park,
NY, USA
Status: offline
|
Hi Guys,
I have a Viper with a 4 oz. Sullivan Slant on its side in the fuel tank compartment with a 500mAh standard size Futaba battery pack. The plane balances perfect where it is and it has worked out pretty well, but I would like to switch it over to a bladder fuel tank system. My question is in choosing a fuel tank. Should I go with the Jett 4oz. Standard, the Jett 4oz. Slim or the 4oz. Tettra? If I can, I would like to go with a tank that eliminates a major modification job, if any. Is there any that will just drop right in the plane and allow me to keep the battery up there in the fuel compartment with it as well?
Also I was thinking of placing the fuel tank on the CG. line or close to it. I have taken many measurements but still without actually having the tank in your hands it’s hard to figure out which way to go. Of course we do not have any decent hobby shops in my area and the few that are even an hour away would not carry any Jett or Tettra fuel tanks or racing type accessories? So I ask the advice of some of you more seasoned Pro’s out there?
Options:
1.Fuel tank located in the fuel tank compartment:
Am I better off with a Jett 4oz. Standard or Slim, or a Tettra tank? Can I place a Jett or Tettra tank in there with out taking too much wood off of the second former? Will a 500-mAh battery fit in there with it? If I have to open the second former hole more to allow the rear of the tank to fit, will it come in to the throttle servo area too much causing me to have to move the throttle servo back more from its standard location? If not, how about the throttle cable will it clear? Will there be enough room for the cable with the tank and the battery all up front?
2.Fuel tank located on the CG. line:
I f I place the fuel tank on the CG. line, how is it located? Should I center the tank on the CG. line? I will still have to cut and modify the second former, correct? Again which tank would I be better of with of the 3 mentioned above? I was thinking of the Jett Standard tank because it’s shorter and would not interfere with the Aileron servo. I imagine that some of the tank may protrude thru the second former, but there would be plenty of room up there for the battery. The battery could go in the fuel tank compartment closer to the Firewall. What about the placement of the throttle servo, in the fuel tank compartment or move it over in the factory servo tray location?
All of these questions, “Yikes”. It would be so much easier if I had all 3 tanks in my hands. I think I would prefer to go with the Jett standard because from my calculations and measurements the tank is only a little bit wider or rounder as it may be. But the length of the Slim is about an inch longer. Unless this little bit makes a big difference in determining how much wood is removed from the second former. I do not want to loose too much strength factor by removing too much wood. I have looked thru several of the threads and pictures they have helped a bit, but I am looking for answers to specific questions before I go placing all kinds of orders. I have 3 of these planes so thats 3 times everything in orders. LOL........
Thanks Much,
Ed
_____________________________
"GO FAST & TURN LEFT"
|
Printable Version
All Forums >> RC Airplanes >> Pylon Universe - RC Pylon Racing >> Q-500 Racing >> Fuel Tank Selections 
Fuel Tank Selections - 
