Spot Jett .50 in Sig Kobra!!
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Spot Jett .50 in Sig Kobra!!
I've seen Kobras fly with .40's/46's; would sj .50 be too much for this little airplane? What mods might be required. How would one prop a little beast like this? Would the fuel tank be too small to have a resonable flight? Anyone tried it? Responses appreciated.
Hammer
Hammer
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RE: Spot Jett .50 in Sig Kobra!!
ORIGINAL: J.T. Hammer
I've seen Kobras fly with .40's/46's; would sj .50 be too much for this little airplane? What mods might be required. How would one prop a little beast like this? Would the fuel tank be too small to have a resonable flight? Anyone tried it? Responses appreciated.
Hammer
I've seen Kobras fly with .40's/46's; would sj .50 be too much for this little airplane? What mods might be required. How would one prop a little beast like this? Would the fuel tank be too small to have a resonable flight? Anyone tried it? Responses appreciated.
Hammer
The SJ .50 is the same mounting dimensions as an OS .46 so mounting shouldn't present much challenge. 9-7, 9-8 for starters. An 8 ounce tank will give you reasonable flight time if you don't spend every second WFO, if you can fit 10 ounce then great. Jett bladder tanks highly recommended.
MJD
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RE: Spot Jett .50 in Sig Kobra!!
ORIGINAL: MJD
No, it's fine, and it has probably been done - take a look at the similar projects on the Jett site. Someone stuffed a Jett .90 in a .40 size Patriot - that's a bit more radical than putting a .50 in a Kobra, so I wouldn't stress about it.
The SJ .50 is the same mounting dimensions as an OS .46 so mounting shouldn't present much challenge. 9-7, 9-8 for starters. An 8 ounce tank will give you reasonable flight time if you don't spend every second WFO, if you can fit 10 ounce then great. Jett bladder tanks highly recommended.
MJD
ORIGINAL: J.T. Hammer
I've seen Kobras fly with .40's/46's; would sj .50 be too much for this little airplane? What mods might be required. How would one prop a little beast like this? Would the fuel tank be too small to have a resonable flight? Anyone tried it? Responses appreciated.
Hammer
I've seen Kobras fly with .40's/46's; would sj .50 be too much for this little airplane? What mods might be required. How would one prop a little beast like this? Would the fuel tank be too small to have a resonable flight? Anyone tried it? Responses appreciated.
Hammer
The SJ .50 is the same mounting dimensions as an OS .46 so mounting shouldn't present much challenge. 9-7, 9-8 for starters. An 8 ounce tank will give you reasonable flight time if you don't spend every second WFO, if you can fit 10 ounce then great. Jett bladder tanks highly recommended.
MJD
yeah, what he said Stuffing a .40 into the little Kobra has been done many times before. (although I was always quite happy having a .46 or .50 in the normally .40 size Kougar).
Also, the bubble-jett tank will allow you to use 100% of the fuel. And you do not have to worry as much about padding the tank... kinda can cram it in there as long as it does not get dammaged. At WFO figure on a 6oz tank lasting 4 minutes. For sport use, you use the throttle for start up, landing, in flight... that is good for another minute or so.
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RE: Spot Jett .50 in Sig Kobra!!
Thx guys. So I guess the downside would be the short flight time with the sj 50 in the kobra. I have built the kougar and used a mild k&b .60. Wasn't too fast but flew well. Building doesn't appeal to me as much as an ARF right now, but the Kougar as I remember was quite an easy build, and you can finish it the way you want. If I went that way I hope the Jet would fly it reasonably quick - does anyone have an idea of what the speed might be. I'm guessing maybe 120 - 130 mph. If slower than that, I'd consider something else. I believe you could put a 10 oz tank in the Kougar.
Decisions!
Hammer
Decisions!
Hammer
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RE: Spot Jett .50 in Sig Kobra!!
Kougar or Kobra ---- thick wing - fixed gear ---- not going to go 130 very easily. But folks manage to get Patriot up that high with jett50 or 60lx power, so with some persistance it might happen.
As a reference, a Q-500, such as the Viper ARF, set up for 424 racing, TT40 pro (stock) tops out about 120mph in extended level flight.
As a reference, a Q-500, such as the Viper ARF, set up for 424 racing, TT40 pro (stock) tops out about 120mph in extended level flight.
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RE: Spot Jett .50 in Sig Kobra!!
ORIGINAL: J.T. Hammer
Thx guys. So I guess the downside would be the short flight time with the sj 50 in the kobra. I have built the kougar and used a mild k&b .60. Wasn't too fast but flew well. Building doesn't appeal to me as much as an ARF right now, but the Kougar as I remember was quite an easy build, and you can finish it the way you want. If I went that way I hope the Jet would fly it reasonably quick - does anyone have an idea of what the speed might be. I'm guessing maybe 120 - 130 mph. If slower than that, I'd consider something else. I believe you could put a 10 oz tank in the Kougar.
Decisions!
Hammer
Thx guys. So I guess the downside would be the short flight time with the sj 50 in the kobra. I have built the kougar and used a mild k&b .60. Wasn't too fast but flew well. Building doesn't appeal to me as much as an ARF right now, but the Kougar as I remember was quite an easy build, and you can finish it the way you want. If I went that way I hope the Jet would fly it reasonably quick - does anyone have an idea of what the speed might be. I'm guessing maybe 120 - 130 mph. If slower than that, I'd consider something else. I believe you could put a 10 oz tank in the Kougar.
Decisions!
Hammer
MJD
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RE: Spot Jett .50 in Sig Kobra!!
You're right, I always set my timer for 5 minutes as my non Jett powered aircraft fly relatively quick, and 5 is enough! Would you or anyone have an idea how fast ( mph) a Juno F-20 would go with a Jett .60 LX? Or a Kougar with the same; both with fixed gear.
JTH
JTH