Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Ultra Sport at 235kmp (143mph)

Reply

Old 02-14-2008, 04:43 PM
  #1  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Ultra Sport at 235kmp (143mph)

Hello guys

This time I want to share with you my ultra sport 40 , I building this beby 5 years ago and about 300 flights and it continues flying .
Four point rolls , slow rolls , snaps , knife pass , slow pass many others and the best of the best hi speed

This model 1991 is an Ultra Fun airplane , one of the best choice in a sport plane to me max. speed 235 kph (143mph)

Engine ............YS 45
Exhaust........... Tuned pipe 7.5 cc
Fuel................. Power Master 10%
Plug.................os R5
Prop.................10x7 PAC
RPM ................ 15,500

I only tach once with the first YS , this is the second YS but I suppose that turns at the same rpm than the first one (I finishes the first one )

Who of you have or had an beby like this ? any pic ? I love this airplane





Attached Thumbnails Click image for larger version

Name:	Nl29490.jpg
Views:	7
Size:	256.9 KB
ID:	878584   Click image for larger version

Name:	Je10731.jpg
Views:	4
Size:	273.8 KB
ID:	878585   Click image for larger version

Name:	Jo30054.jpg
Views:	6
Size:	223.8 KB
ID:	878586   Click image for larger version

Name:	Xq45108.jpg
Views:	4
Size:	86.1 KB
ID:	878587   Click image for larger version

Name:	Ep86398.jpg
Views:	6
Size:	53.3 KB
ID:	878588   Click image for larger version

Name:	Bs13891.jpg
Views:	6
Size:	98.1 KB
ID:	878589   Click image for larger version

Name:	Km96964.jpg
Views:	4
Size:	93.8 KB
ID:	878590   Click image for larger version

Name:	Ih23667.jpg
Views:	5
Size:	53.8 KB
ID:	878591  

Click image for larger version

Name:	Qo10324.jpg
Views:	5
Size:	97.9 KB
ID:	878592  
SpeedBoy is offline  
Reply With Quote
Old 02-14-2008, 09:11 PM
  #2  
combatpigg
Senior Member
My Feedback: (3)
 
combatpigg's Avatar
 
Join Date: Nov 2003
Location: arlington, WA
Posts: 19,891
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

SpeedBoy, once you make a thread about a 177mph plane, you can't go backwards!! [>:]
combatpigg is offline  
Reply With Quote
Old 02-14-2008, 09:31 PM
  #3  
Flyboy Dave
My Feedback: (21)
 
Join Date: Mar 2002
Location: Pinon Hills, CA
Posts: 13,775
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

....ya' gotta' love those Ultra Sports.....[sm=thumbup.gif][sm=thumbup.gif]

FBD.
Flyboy Dave is offline  
Reply With Quote
Old 02-15-2008, 12:10 AM
  #4  
zero-cool
Member
 
Join Date: Aug 2006
Location: south lyon, MI
Posts: 99
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

wow!!! 143 was that with a 20 mph tail wind?or was it"that thing was going 143 miles per hour at least!!!!!! holy sh***"im just kidding.the ultra sport was one of my dream planes when i first started rc.1991 .its clean but the wing is a little thick for high speed.but its a great sport plane.one of the best
zero-cool is offline  
Reply With Quote
Old 02-15-2008, 01:55 AM
  #5  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: combatpigg

SpeedBoy, once you make a thread about a 177mph plane, you can't go backwards!! [>:]
Jejeje Ohhh , came on combatpigg is only for sharing , I know there is no a huge hit , but is verrrrrrry fun

SpeedBoy is offline  
Reply With Quote
Old 02-15-2008, 02:45 AM
  #6  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: Flyboy Dave

....ya' gotta' love those Ultra Sports.....[sm=thumbup.gif][sm=thumbup.gif]

FBD.
Yessss Flyboy Dave , as much that I just order another one , just for in case

Maybe when I build the new one I'll reduce the wide of his wing to gain some speed , like zero-cool say , is some thick for hi speed .

zero-cool I agree with you , is one of the best sport planes

Btw 143 mph at least jejeje



SpeedBoy is offline  
Reply With Quote
Old 02-15-2008, 03:53 PM
  #7  
ecoliburger
My Feedback: (18)
 
Join Date: Jul 2002
Location: Fairfield, CA
Posts: 254
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

Prop speed is only about 103 at that rpm. Was that at a straight down dive and tail wind? Not trying to crap in your sandwich just wondering how you did it.
ecoliburger is offline  
Reply With Quote
Old 02-15-2008, 06:45 PM
  #8  
combatpigg
Senior Member
My Feedback: (3)
 
combatpigg's Avatar
 
Join Date: Nov 2003
Location: arlington, WA
Posts: 19,891
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

SpeedBoy, I forgot to tell you that you did a great covering job on this bird, too!
It is still too wet and muddy around here to think about flying. So the good news about the fun that guys like you are having is making me more impatient to get out there.
combatpigg is offline  
Reply With Quote
Old 02-16-2008, 02:06 AM
  #9  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: ecoliburger

Prop speed is only about 103 at that rpm. Was that at a straight down dive and tail wind? Not trying to crap in your sandwich just wondering how you did it.
How I did it .......? well my way is , first I get vertical , around 150 mts , then half roll , pull up , try to leave the airplane in the correct direction going towards to the ground aprox 45ΒΊ , traying to no touch the sticks to no brake it until 3 mts before the ground , the speed is increased , pass in front of radar and there is . Of course tail wind , but I think no more than 10 mph of wind.

As a 103 prop speed at that rpm........... With all respect , I dont believe on a theory what say , "X" prop at "X" rpm will fly at "X" speed , there is many factors to consider to obtain the real number and maybe we do not have all . My other patriot with YS 45 too and 10x7 apc at the same rpm fly faster (244km/h) than my ultra sport , again with the same set-up only different airframe. And I'm sure if we put an 10x7 apc at 15,500 on a trainer the speed will change

Attached Thumbnails Click image for larger version

Name:	Ca80522.jpg
Views:	4
Size:	68.0 KB
ID:	879964  
SpeedBoy is offline  
Reply With Quote
Old 02-16-2008, 02:50 AM
  #10  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: combatpigg

SpeedBoy, I forgot to tell you that you did a great covering job on this bird, too!
It is still too wet and muddy around here to think about flying. So the good news about the fun that guys like you are having is making me more impatient to get out there.
Thanks combatpigg , I like you liked

It seems I can't to fly tomorrow either , the weather channel say isolated storms all day [>:]


SpeedBoy is offline  
Reply With Quote
Old 02-16-2008, 10:50 AM
  #11  
Strykaas
Senior Member
 
Join Date: Mar 2003
Location: New York, NY
Posts: 4,571
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

My other patriot with YS 45 too and 10x7 apc at the same rpm fly faster (244km/h) than my ultra sport , again with the same set-up only different airframe. And I'm sure if we put an 10x7 apc at 15,500 on a trainer the speed will change
Haha well said !
Strykaas is offline  
Reply With Quote
Old 02-16-2008, 01:22 PM
  #12  
Razor-RCU
Senior Member
My Feedback: (50)
 
Razor-RCU's Avatar
 
Join Date: Mar 2002
Location: Mira Mesa, CA
Posts: 5,405
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

Once again I do not believe this claim. a 10x7 @ 15.5K? I cannot see you hitting 143mph. Maybe you should have your gun "looked at".

I think you are a nice guy and I am not trying to ruin your day but seriously? 143 with an US? I think you should back away from the radar-gun for awhile---

15.5 on a 10x7 is not impressive for a YS-45, are you sure that is correct?
Razor-RCU is offline  
Reply With Quote
Old 02-16-2008, 02:58 PM
  #13  
asmund
Senior Member
 
Join Date: Nov 2005
Location: Floroe, NORWAY
Posts: 2,825
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

I just wondered if this could be possible too. When calculating pitch speed I only get 102 miles pr hour.
pitch of 7, times 15500 rpm divided by 1056 = speed in miles
asmund is offline  
Reply With Quote
Old 02-16-2008, 03:57 PM
  #14  
vasek
My Feedback: (4)
 
vasek's Avatar
 
Join Date: Jan 2002
Location: Prague, CZECH REPUBLIC
Posts: 4,144
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

It is possible that the speed gun is not well calibrated. It is the same gun that measured 190 miles/hour Patriot.

I like Patriots a lot, but i think it takes a bit "more effort and more $" to get close to the 200 miles/hour mark.

If it were that easy....
vasek is offline  
Reply With Quote
Old 02-16-2008, 04:07 PM
  #15  
Mike Connor
Senior Member
My Feedback: (5)
 
Mike Connor's Avatar
 
Join Date: Jan 2002
Location: Tulsa, OK
Posts: 2,025
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

The pitch speed considering prop camber and unloading puts it over 140 mph. I suspect there is very little slippage when in a 45* dive.
Mike Connor is offline  
Reply With Quote
Old 02-16-2008, 04:12 PM
  #16  
Mike Connor
Senior Member
My Feedback: (5)
 
Mike Connor's Avatar
 
Join Date: Jan 2002
Location: Tulsa, OK
Posts: 2,025
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: vasek

It is the same gun that measured 190 miles/hour Patriot.
The Patriot was 170 mph, not 190, and it was also in a steep dive.
Mike Connor is offline  
Reply With Quote
Old 02-16-2008, 09:33 PM
  #17  
combatpigg
Senior Member
My Feedback: (3)
 
combatpigg's Avatar
 
Join Date: Nov 2003
Location: arlington, WA
Posts: 19,891
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

Does this have anything to do with the time I got radared doing 90 mph on my way to Encinada in a VW Bug?
Now if SpeedBoy comes back a couple of weeks from now saying that he got a LazyBee up to 120 mph, then I will start to wonder.
combatpigg is offline  
Reply With Quote
Old 02-16-2008, 09:55 PM
  #18  
proptop
My Feedback: (8)
 
proptop's Avatar
 
Join Date: Oct 2002
Location: Rome, NY
Posts: 7,022
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: combatpigg

Does this have anything to do with the time I got radared doing 90 mph on my way to Encinada in a VW Bug?
Now if SpeedBoy comes back a couple of weeks from now saying that he got a LazyBee up to 120 mph, then I will start to wonder.

Hey...I've got this LazyBee...and a BVM .91
proptop is offline  
Reply With Quote
Old 02-17-2008, 05:22 AM
  #19  
Strykaas
Senior Member
 
Join Date: Mar 2003
Location: New York, NY
Posts: 4,571
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

Once again I do not believe this claim. a 10x7 @ 15.5K? I cannot see you hitting 143mph. Maybe you should have your gun "looked at".
IMHO the posted video says it all. I have never seen any other Pat go that fast anywhere anytime on RCU. And it looks 170 mph, it's a relatively 'big' bird.
It has already been said, the doppler measure for the Pat confirmed the radar measure, what more could you ask for ? The radar gun seems OK. That looks like thread jamming [sm=thumbs_down.gif].

SpeedBoy, we now need that 143 mph vid
Strykaas is offline  
Reply With Quote
Old 02-17-2008, 10:36 AM
  #20  
easton24
My Feedback: (1)
 
Join Date: Nov 2004
Location: STEDMAN, NC
Posts: 371
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

The 15500 was measured on the ground. Does formula also adjust for the unloading the prop will do in the air? Also with him in a dive?
easton24 is offline  
Reply With Quote
Old 02-17-2008, 05:30 PM
  #21  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: Razor-RCU

Once again I do not believe this claim. a 10x7 @ 15.5K? I cannot see you hitting 143mph. Maybe you should have your gun "looked at".

I think you are a nice guy and I am not trying to ruin your day but seriously? 143 with an US? I think you should back away from the radar-gun for awhile---

15.5 on a 10x7 is not impressive for a YS-45, are you sure that is correct?
It is not strange to me that you not believe and really no problem

You dont believe my speed and is difficult to me believe your speed at only 120 mph with a patriot and jett 50 , you should to be above of that with that set-up .

If you think the radar are wrong then I want to ask you something WHY doppler was agree with it , when the video of my patriot ??? , the radar say 271km/h and doppler say 272km/h a difference of .62 mph , big coincidence !!!......... I dont think so .

As I said in the firts post of this tread I onle tach once the fisrt one YS on my Ultra Sport and I suppose this one (second one YS ) turns at the same rpm , I'll try tach this one and I'll say exactly how many rpm this engine have.



SpeedBoy is offline  
Reply With Quote
Old 02-18-2008, 02:28 AM
  #22  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

ORIGINAL: vasek

It is possible that the speed gun is not well calibrated. It is the same gun that measured 190 miles/hour Patriot.

I like Patriots a lot, but i think it takes a bit "more effort and more $" to get close to the 200 miles/hour mark.

If it were that easy....
Like Mike Connor said , was 170 mph not 190 mph

To be honest I dont think the radar are bad calibrated , we are clocked many airplanes on the filed with this radar .

F-20 - YS 45 - tuned pipe - 10x7 apc - with retracts (kit)........................185 km/h
Patriot 40- YS 45 - tuned pipe - 10x7 apc with retracts (kit )...................217 km/h
Kougar 40- OS 46 AX - stock muffler- 10x7 apc - fixed gear (kit) .........162 km/h
Mustang 40 - surpas 90 - 12x9 apc - retracts (kit)...............................141 km/h
Avistar - os 46 ax - stock muffler - 10x7 apc - fixed gear (arf)...............96 km/h

And many others .

If the radar are grong why it does not mark more speed in that set-up ???



SpeedBoy is offline  
Reply With Quote
Old 02-18-2008, 02:44 AM
  #23  
SpeedBoy
Senior Member
Thread Starter
 
SpeedBoy's Avatar
 
Join Date: Nov 2007
Location: Monterrey, MEXICO
Posts: 461
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)


ORIGINAL: Strykaas

Once again I do not believe this claim. a 10x7 @ 15.5K? I cannot see you hitting 143mph. Maybe you should have your gun "looked at".
IMHO the posted video says it all. I have never seen any other Pat go that fast anywhere anytime on RCU. And it looks 170 mph, it's a relatively 'big' bird.
It has already been said, the doppler measure for the Pat confirmed the radar measure, what more could you ask for ? The radar gun seems OK. That looks like thread jamming [sm=thumbs_down.gif].

SpeedBoy, we now need that 143 mph vid
Thanks Strykaas

Yep I'll try to take video of that 143 mph
SpeedBoy is offline  
Reply With Quote
Old 02-18-2008, 08:28 AM
  #24  
buzzingb
Senior Member
My Feedback: (2)
 
Join Date: Sep 2002
Location: Bruce, MS
Posts: 1,516
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

You have convinced me, I am looking for a YS as we speek. Forget Jett, Nelson, OS etc.
buzzingb is offline  
Reply With Quote
Old 02-18-2008, 09:07 AM
  #25  
combatpigg
Senior Member
My Feedback: (3)
 
combatpigg's Avatar
 
Join Date: Nov 2003
Location: arlington, WA
Posts: 19,891
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Ultra Sport at 235kmp (143mph)

I've been thinking the whole time that SpeedBoy should be sponsored by YS, he is doing good advertising for them.

It is pretty hard to argue with Doppler readings that backup the radar, especially when it is done by a guy he has never met who lives 2000 miles away. Conspiracy? Only if we find out that both of these guys work for YS and Rossi [8D][8D].

combatpigg is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service