News:



  • May 21, 2025, 06:14:06 AM

Login with username, password and session length

« previous next »
Pages: 1 [2]  All   Go Down

Author Topic: Crossfire Extreme XLTC  (Read 26671 times)

Offline Doug Moon

  • 25 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2302
Re: Crossfire Extreme XLTC
« Reply #50 on: June 06, 2013, 12:31:56 PM »
Quote from: Bob Hunt on June 06, 2013, 11:12:14 AM
Yes they are... Do they remind you of this... ?  #^

Bob

Nah, not as much as this....

< ========== << look, just to the left, a little bit.
Logged
Doug Moon
AMA 496454
Dougmoon12@yahoo.com

Offline Mark Scarborough

  • 2015
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 5918
Re: Crossfire Extreme XLTC
« Reply #51 on: June 06, 2013, 02:43:50 PM »
It looks really clean Bob,,
now about that clear,, I think it looks outstanding in satin,, maybe just somme satin gloss  H^^ y1
Logged
For years the rat race had me going around in circles, Now I do it for fun!
EXILED IN PULLMAN WA
AMA 842137

Offline Randy Powell

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 10476
  • TreeTop Flyer
Re: Crossfire Extreme XLTC
« Reply #52 on: June 06, 2013, 07:18:05 PM »
Very slick and professional looking, Bob. Should be a great plane.
Logged
Member in good standing of P.I.S.T
(Politically Incorrect Stunt Team)
AMA 67711
 Randy Powell

Offline Randy Powell

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 10476
  • TreeTop Flyer
Re: Crossfire Extreme XLTC
« Reply #53 on: June 06, 2013, 10:50:21 PM »
Thanks, Bob. The covering is on. Just building up to paint.
Logged
Member in good standing of P.I.S.T
(Politically Incorrect Stunt Team)
AMA 67711
 Randy Powell

Offline Tom Niebuhr

  • AMA Member
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2767
Re: Crossfire Extreme XLTC
« Reply #54 on: June 19, 2013, 07:24:31 AM »
I got word from "an unnamed source" that Bob's Extreme XLTC has had the clearcoat applied and he is wearing his fingers to the bone rubbing it out since they recommend compounding in the first 24 hrs +.

We should see pictures and initial flight reports soon.
Logged
AMA 7544

Offline Airacobra

  • Trade Count: (0)
  • Commander
  • ****
  • Posts: 293
Re: Crossfire Extreme XLTC
« Reply #55 on: June 26, 2013, 01:29:50 PM »
It's just short of a full week since the last post. The way Bob works, this thing has been buffed and has 25 plus flights on it by now, what say you Bob???
Logged
Keith Bryant

Offline Matt Colan

  • N-756355
  • AMA Member
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3521
Re: Crossfire Extreme XLTC
« Reply #56 on: June 27, 2013, 09:21:48 AM »
It looks really good Bob! Really like the tricycle landing gear look!
Logged
Matt Colan

Offline MarcusCordeiro

  • 2013 Supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1872
  • "Never fly faster than your shoulder angel"
Re: Crossfire Extreme XLTC
« Reply #57 on: June 27, 2013, 09:35:01 AM »
Oh boy!!! #^ #^ #^ #^

Marcus
Logged
Live to fly, fly to live
Aces High!

"There's no try. Do or Do not." - Master Yoda

"Wealth and fame, he's ignorant
Action is his reward, look out
Here comes Marcus, man..."

Offline Tom Niebuhr

  • AMA Member
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2767
Re: Crossfire Extreme XLTC
« Reply #58 on: June 27, 2013, 09:58:32 AM »
Bob,
Looks great. Have you raised the gear yet? I that could give a few more "impression points" in flight.
Logged
AMA 7544

Offline Dave Denison

  • Trade Count: (0)
  • Commander
  • ****
  • Posts: 164
Re: Crossfire Extreme XLTC
« Reply #59 on: June 27, 2013, 10:44:29 AM »
Quote from: Bob Hunt on June 27, 2013, 08:18:05 AM
Hi Guys:

 However, as last year's ship is flying amazingly well with the trim changes that Paul Walker suggested. I incorporated those trim changes into the new ship and it seems to like them as well. Will be nice to have two great models to choose from. I'll make my decision on which I'll fly at the Nats by the weekend.

Here are a few finished shots of the ship...

Later - Bob 


Bob.

The new bird looks outstanding, great color contrast.  The trim changes that you and Paul applied to the ship, can you give us more specifics?  I see your leadouts are fairly far forward, has the CG found it's way forward also?....most interested.
Thanks for your time

Dave
Logged
Regards
Dave

ama 41041

Offline Tom Niebuhr

  • AMA Member
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2767
Re: Crossfire Extreme XLTC
« Reply #60 on: June 27, 2013, 11:16:32 AM »
Bob,
Whoops,

I guess I am still rooting for the twin.

This airplanes is still very impressive.
Logged
AMA 7544

Offline Tom Niebuhr

  • AMA Member
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2767
Re: Crossfire Extreme XLTC
« Reply #61 on: June 27, 2013, 12:11:23 PM »
Bob,
I just noticed that your new Crossfire has one motor missing!
Logged
AMA 7544

Offline Dennis Toth

  • 2020 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 4386
Re: Crossfire Extreme XLTC
« Reply #62 on: July 28, 2013, 07:12:21 AM »
Bob,
Great job at the NATs, since you elected to fly the "new" Crossfire let's hear the backstory. Why did you elect to go with it over the other ship? Did the design changes you made work as you intended? Is there more tweaking you can do to get it better or is it really close to peak?

Curious minds want to know. y1

Best,       DennisT
Logged

Offline Randy Powell

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 10476
  • TreeTop Flyer
Re: Crossfire Extreme XLTC
« Reply #63 on: July 28, 2013, 11:12:38 AM »
I'm glad to hear this, Bob. Wouldn't be the same without you.
Logged
Member in good standing of P.I.S.T
(Politically Incorrect Stunt Team)
AMA 67711
 Randy Powell

Offline Dennis Toth

  • 2020 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 4386
Re: Crossfire Extreme XLTC
« Reply #64 on: July 28, 2013, 12:55:50 PM »
Bob,
Great summary, interesting to see how a design evolves. Have you tried the low pitch high rpm with the 12" diameter? It would be interesting to see if the lower pitch would pull out of the corners stronger. It seems that with electric higher rpm seems to draw more current and could require a higher capacity pack even with the lower pitch and same diameter. If it works it would be interesting even if we need more capacity.

Checking the battery pack options it seems that the 5S 1P 2700 TP (10.2 oz) is a lighter option than the 4S 3300 (11.4 oz). The big big break for electric will be when we can recharge in 10 mins or less and use 95% of the pack without reducing battery life or have power drop off.

Best,       DennisT
Logged

Offline William DeMauro

  • 21 supporter
  • Trade Count: (0)
  • Captain
  • *
  • Posts: 800
Re: Crossfire Extreme XLTC
« Reply #65 on: July 28, 2013, 03:14:30 PM »
Quote from: Dennis Toth on July 28, 2013, 12:55:50 PM
The big big break for electric will be when we can recharge in 10 mins or less and use 95% of the pack without reducing battery life or have power drop off.

Best,       DennisT
Dennis,
    We already have the 10 minute charging. We can have the 95% of the pack, IF you want to ABUSE your packs and don't care about lifespan. There are a few that do this. I don't and I don't recommend it but, yes it can be done. Bob, myself and others  have the ability to charge a pack in 9-11 minutes but we rarely go at full speed and usually take 12-15 minutes, It's still a great rate of charge. I regularly bring 12 batteries (6 4s 3700mah and 6 4s 2700 mah) up from storage mode in around 20 minutes. At this point, we may be more limited by the chargers available to us than anything. We are pretty much maxing out what we can get out of 24V power supplies and 110 standard US house current. I've already popped a breaker. What I think we will eventually see are some 48 V power supplies and 2500 watt chargers. 10C charging rates are here, though not the norm yet. At that point we will have 5 minute charge times.
William
Logged
AMA 98010

Offline Dennis Toth

  • 2020 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 4386
Re: Crossfire Extreme XLTC
« Reply #66 on: July 28, 2013, 05:04:48 PM »
William,
I understand there are some cells that are able to take a very high C rate charge but those are not Stunt packs, they are usually 30% heavier then the ProLite cells. I don't know what packs you like but I have tried several an go back to the Thunder Power's. The new G8's are getting there but you still need to leave 20% head room. The only cells that you can charge at 10C and take down to 95% without hurting them are the A123's. Problem is they are very heavy and not available in convenient sizes.  Electric has come a long, long way and is only going to get better.

Best,        DennisT
Logged

Offline john e. holliday

  • 25 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 22966
Re: Crossfire Extreme XLTC
« Reply #67 on: July 29, 2013, 08:49:48 AM »
If you are flying alone I can see the 10 minute charge rate, but is that after the battery has cooled down.   When I was flying with the guys and granddaughter, which made four of us.  I/we would get to fly every fourth flight.   If a person has say at least 3 packs for flying, is that enough time to let a pack cool while using the next pack.   Myself I usually start losing concentration on about the fifth pattern when flying, that is when the play plane comes out or I sit and relax for a couple of hours.   
Logged
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Advertise Here
Pages: 1 [2]  All   Go Up
« previous next »
Tags: