Meesh

My Feedback: (135)

My Boomerang Torus weighs in at 36.9lbs wet.
I have a Kingtech 100 in it.
Will this be enough engine?
Most flying will be done off of a paved surface.


Thanks for the help.

Bob

Jetkopter

My Feedback: (1)

Will it fly, yes it will. It just not going to be much fun when you have to be at or near full power for most of the flight, not to mention the botched landing scenario where you need the power to save the model. Bob I flew a boomer xl on an 80 for a while and it was boring. Get yourself a 140.

erh7771

My Feedback: (30)

Matters how you fly, there's enough efflux to get the speed up just will take a second to get there... verticals will be in the 5 - 700 foot range vs I can't see my plane range.

Know of KT-100s pushing models like Velox G2s near the 200mph mark... sips fuel (12 oz a min) so you don't have to load the plane down.

raron455

My Feedback: (38)

Yes it will fly it, but like jetkopter stated, its not going to be very thrilling, expect long roll-outs, keep your climb out steady and not too high of an angle, keep your TO flaps down until the gear is up and you have some speed once your outta the backleg turn. Once its flying and clean, I would honestly suspect you still have to be at at LEAST 3/4 power for the whole fight. You will lose a ton of energy in a climb, but with a head of steam behind you you will be able to get up high. And again as previously stated when you come in for a landing
If you have any problems , over or under shoot the runway don't expect your power to come on and the plane to get flying quickly , because it won't happen.

erh7771

My Feedback: (30)

I think a good response questions relative to the "is this enough engine" question is; .....How Do You Want to fly?

For some 199.999 is walkin pace while others want to perform a scale routine or some stable maneuvers.

highhorse

My Feedback: (2)

My XL is a couple of pounds heavier. 90% of the time is at 1/2 throttle on my old 35lb Jetcat Titan, but I do goose it for verticals and on the front side of loops etc. (Keep in mind that any extra thrust you purchase will have a much bigger effect on climb than on top end speed)

IMO you're takeoffs are gonna be fine given that you're flying off of pavement. Barring some financial factor I'm not privy to, my 2c is to fly it with what you have, then go bigger later if YOU feel the need.

Hope this was helpful,
Don.

alasdair

Like they say, depends on you.
You have a thrust/weight ratio of 0.6, improving to 0.7 by the time you land.

If you are a scale flier and want to emulate the performance of a Vampire or other early fighter your Torus will perform very well. It is a Vampire on steroids.
My jet seaplane had its engine turned down to 10 lb for a trial (similar thrust weight to yours) and it took off and flew just great. But I missed the great big vertical manoeuvres and turned it back up.

If you are a hooligan pilot you will be disappointed as most of us like 1:1 thrust/weight.

Meesh

My Feedback: (135)

I'm relaxed 69 year old flyer and don't need unlimited vertical performance. I have the K100 but was a little discouraged when I weighed the plane the other night. The K120 would drop right in. Same weight and physical size as the K100. A friend recommended the upgrade.

alfa1023

My Feedback: (5)

Meesh,

I have a K140 in my Torus and can not imagine flying it with less engine. I usually tool around at 1/2 throttle, but enjoy the full throttle verticals and fast/low passes. If you are buying a new engine for it, I would definitely splurge and at least get a 140 for it, for both the fun factor as well as having the additional power for takeoffs, go arounds, etc.