quote:

ORIGINAL: indubitably

P 100 RX will push it to 215, but it takes a while to get there. Take off needs 400 ft, and the speed builds slowly. Once up to speed, it will go vertical possibly 1,000 feet before perceptably slowing. And low residual thrust is nice. The P120 SX Will be all around faster getting there, and higher top end. The 160 is frequently used, and is lively, but will not hold a vertical climb if you start slow and point vertical, and hold it. I cannot wait to see what the P180RX will dow for this plane. Will find out in a few weeks when a friend picks his up. We will probably radar him for reference.. The vertical should accelerate, and the take off should be under 200 ft. estimated. The P200SX wont fit, without a lot of work, and im not the one to do it.

quote:

ORIGINAL: basimpsn

quote:

ORIGINAL: SniperWj

the 180rx work just like what you said.

I can give it unlimited vertical come out from slow and low pass.

one word..awesome!


mine weight 10.5kg uat full but tanks is empty

yiming

I wouldn't use any turbine with thrust rating higher than a 170, I did the K-180 in my ultra Flash although the full throttle was not a problem, but my idle thrust was too much for landing. So I swap with my k-170. Notice my video I had to bleed off speed before take off .

http://www.youtube.com/watch?v=k357mbHFCmI

quote:

ORIGINAL: luv2flyrc

quote:

ORIGINAL: gooseF22

when I had the 160 in it, we kept dialing it back...ended up around 24-26 lb thrust.. plenty to go vertical (midwest).. If you have all the speed out of your system, then build it light weight and use one of the smaller lighter engines.. thats what Im doing this winter.. I saw one fly recently with a Tam pipe, lighter servos, and less than 20lb overall weight..yes, less than 20lb.. with a P100.. it flew absolutely beautifully.. would slow to a crawl.. plenty of smash.. Im going to put a wren 100 in mine with the stock pipe, and toss the pilot/cockpit, and take out the smoke.. that should bring me in around 22lb.. FWIW

Yea, I have to agree with you. I prefer the lighter wing loading, less residual thrust and being able to slow it down, though a lot of flap can assist there. I was planning on the Rabbit, but I like to see what others have done and the results they get. Like I said before, I don't need to go ballastic, spent 10 years flying bandits doing that, getting older, like to relax a little more.
Totally agree, have flown flash with Rabbit 100 at 21lbs, and Cheetah at 22lbs aircraft weight. With the lighter engine, the plane handles SO nice, still does 180mph, take off and landings in 150ft. It is faster with the Cheetah, about 225mph but, doesn't ''feel'' as light and becomes more of a straightline speed plane.Also, higher residual thrust and more time to spool down with a bigger engine.  I like the way it will slow to a crawl with the smaller engines.

I fail to see why people continue to hang bigger and bigger engines in them? You get marginal speed gains and lose handling. The Flash was designed as an aerobatic sport jet, not a speed plane.

Mike

quote:

ORIGINAL: wojtek

All flashes and ultras have potential for skin delamination along the hinge areas . The elevator is especially prone to this problem. Usually this will never manifest itself from flight, however transport and ground handling can attribute to this. In the case of the elevator, a bounded landing , or a nose high landing on rougher surface can cause the elevator horns to get pushed up and peel up the hinge area. Bumping the other surfaces can cause a similar problem. Very few have also claimed they have had surface separation after many flight, however there is a possibility this was also from ''handling'' just went unnoticed for some time. hmm, funny some who have posted here already have had this problem and and posted about it in the past .. All said, the UFlash is my favorite sport jet I have ever flown ... and yes, I have had a delamination issue after hitting a divot on a runway and having my plane bounced .. in the air, the plane will take what you can throw at it ..

http://www.youtube.com/watch?v=n8VP4TjRlNI&hd=1



~V~

quote:

ORIGINAL: rcand

quote:

ORIGINAL: wojtek

All flashes and ultras have potential for skin delamination along the hinge areas . The elevator is especially prone to this problem. Usually this will never manifest itself from flight, however transport and ground handling can attribute to this. In the case of the elevator, a bounded landing , or a nose high landing on rougher surface can cause the elevator horns to get pushed up and peel up the hinge area. Bumping the other surfaces can cause a similar problem. Very few have also claimed they have had surface separation after many flight, however there is a possibility this was also from ''handling'' just went unnoticed for some time. hmm, funny some who have posted here already have had this problem and and posted about it in the past .. All said, the UFlash is my favorite sport jet I have ever flown ... and yes, I have had a delamination issue after hitting a divot on a runway and having my plane bounced .. in the air, the plane will take what you can throw at it ..

http://www.youtube.com/watch?v=n8VP4TjRlNI&hd=1



~V~

Nice video, what turbine is in this one?

quote:

ORIGINAL: Ramz

http://www.youtube.com/watch?v=o0uUNg543iQ

Here is mine with Kingtech 170. Not sure what the top speed is but it has to be approaching 240. (the radar couldn't pick it up) Flew it beside a buddy's New Rookie that was clocked at 222mph and it is considerably faster. If you don't need a ''speed plane'' like you say, you don't need anything more than a 120. Like the boys have said, one of the new Rabbit 100's or a 100RX would be a great choice. I do find mine has a fair bit or residual thrust but it is easily manageable with a nice long, decent approach and alot of flaps. I normally fly off of 450ft of grass and usually use about 250 ft before she stops. I wouldn't trade my UF for anything....ever. It is worth every penny.

Stratotanker here on RCU makes and sells a wooden stand that is built specifically for the UF...buy one if you haven't already. It is worth every penny (if memory serves, it was right around 100 bones). It makes it soo easy to transport, assemble, disassemble and work on at the field...both upright and inverted. This will prevent any delamination on the rudder or elevator hinges during transport. Like it has been said, the delamination issues are typically user induced.

quote:

ORIGINAL: Ramz

http://www.youtube.com/watch?v=o0uUNg543iQ

Here is mine with Kingtech 170. Not sure what the top speed is but it has to be approaching 240. (the radar couldn't pick it up) Flew it beside a buddy's New Rookie that was clocked at 222mph and it is considerably faster. If you don't need a ''speed plane'' like you say, you don't need anything more than a 120. Like the boys have said, one of the new Rabbit 100's or a 100RX would be a great choice. I do find mine has a fair bit or residual thrust but it is easily manageable with a nice long, decent approach and alot of flaps. I normally fly off of 450ft of grass and usually use about 250 ft before she stops. I wouldn't trade my UF for anything....ever. It is worth every penny.

Stratotanker here on RCU makes and sells a wooden stand that is built specifically for the UF...buy one if you haven't already. It is worth every penny (if memory serves, it was right around 100 bones). It makes it soo easy to transport, assemble, disassemble and work on at the field...both upright and inverted. This will prevent any delamination on the rudder or elevator hinges during transport. Like it has been said, the delamination issues are typically user induced.

quote:

ORIGINAL: Jack28

Luv2flyrc, I fly mine with a Cheetah, I find it hard to slow up for landing, and end up bouncing the landing. I have a New Rabitt 100 in my Boomerang Elan. I have thought about swapping it into the Ultra to see if the residual thrust is the problem. It just keeps going and going with the Cheetah I find it hard to land without that damn bouncing, I grease the landing and it still gets back up and bounces flying on grass. I only have 7 flights on it and only three landings were good ones, all the rest bounced, I broke gear pins once. Any suggestions my cg is at at the rearward cg reccomended in the manual. Tried 4'' flap no crow, tried , 4'' with crow still fast on landing. Growing fustrated ,Love the way it flys its an awesome sport jet . Everyone says it lands great , I have over 265 flights on the Elan and its simple too land and never bounces. Thanks JAck.

quote:

ORIGINAL: rcand

quote:

ORIGINAL: Jack28

Luv2flyrc, I fly mine with a Cheetah, I find it hard to slow up for landing, and end up bouncing the landing. I have a New Rabitt 100 in my Boomerang Elan. I have thought about swapping it into the Ultra to see if the residual thrust is the problem. It just keeps going and going with the Cheetah I find it hard to land without that damn bouncing, I grease the landing and it still gets back up and bounces flying on grass. I only have 7 flights on it and only three landings were good ones, all the rest bounced, I broke gear pins once. Any suggestions my cg is at at the rearward cg reccomended in the manual. Tried 4'' flap no crow, tried , 4'' with crow still fast on landing. Growing fustrated ,Love the way it flys its an awesome sport jet . Everyone says it lands great , I have over 265 flights on the Elan and its simple too land and never bounces. Thanks JAck.

Try more flap and crow like sailing1 has. I had the same problem with a BVM electra and fixed it with crow, also keep trying to hold it off, like you are trying to stall it as it touches down.