Go Back  RCU Forums > RC Airplanes > RC Jets
Reload this Page >

C-ARF Ultra Flash build Thread + Video

Notices
RC Jets Discuss RC jets in this forum plus rc turbines and ducted fan power systems

C-ARF Ultra Flash build Thread + Video

Old 09-15-2019, 10:48 AM
  #6226  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks Dave. Do you have any shots of the tailcone and how far the pipe should go in? I have two buddies and they left a gap and the tailcone is scorched on the inside and outside at the end....
AEROSHELDON is offline  
Old 09-15-2019, 01:19 PM
  #6227  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Normally the outer pipe is 8-10mm inside the cone, it should not scorch like this. You can cut the tailcone shorter, that’s no problem. The inner steel pipe must be inside the outer alloy pipe 10mm approx to draw cool air.

regards

Dave
Dave Wilshere is offline  
Old 09-16-2019, 06:50 AM
  #6228  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks! Sorry for all the questions, but this thread is invaluable.

If I get the tab that is on the rear of the canopy to clear the tank, it sits back this far, is that OK??


AEROSHELDON is offline  
Old 09-16-2019, 07:01 AM
  #6229  
Dieselman1220
My Feedback: (25)
 
Dieselman1220's Avatar
 
Join Date: Feb 2004
Location: McAllen, TX
Posts: 801
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

That should be fine, not terribly critical.
Since you have the Evo what are your thoughts on the included gear? Ive had a classic with pro link gear and an ultra with the recommend behotec/air tech combo.
Both were great! Hope this new JP hobby set up is too.
Dieselman1220 is offline  
Old 09-16-2019, 07:04 AM
  #6230  
cmjets
 
cmjets's Avatar
 
Join Date: Apr 2005
Location: Pontevedra, SPAIN
Posts: 1,636
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

The problem is that the top round shape hit with the close system, in my tanks that is solvent:


cmjets is offline  
Old 09-16-2019, 07:05 AM
  #6231  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

The gear seems fine but I replaced the controller with the Ultimate Jets one just out of preference.
AEROSHELDON is offline  
Old 09-16-2019, 07:13 AM
  #6232  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Originally Posted by cmjets View Post
The problem is that the top round shape hit with the close system, in my tanks that is solvent:


That looks nice. Why is the vent outlet so low?? How can you fill the tank all the way up?
AEROSHELDON is offline  
Old 09-16-2019, 07:25 AM
  #6233  
cmjets
 
cmjets's Avatar
 
Join Date: Apr 2005
Location: Pontevedra, SPAIN
Posts: 1,636
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

My vent has a internal tube that go to top, simple and effective !
cmjets is offline  
Old 09-16-2019, 07:34 AM
  #6234  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thank you all.
AEROSHELDON is offline  
Old 09-17-2019, 12:09 PM
  #6235  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Couple more questions as I worked on this a bit at lunch....
1-what is the brass colored cylinder? It was in the package with the nosewheel stuff.
2-should the stud that threads in be at this position? It's just hand tight and the servo arm is not drilled, but it does not appear that it will retract without contacting the fuselage.

what is this on the EVO?


this is going to hit, do I have it correct and I will need to cut the fuse?
AEROSHELDON is offline  
Old 09-17-2019, 12:21 PM
  #6236  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Spare nose pin and sleeve.
Take the nut off the steering arm and screw the stud in fully (add a little thread lock) till the linkage is parallel, you might have to trim the opening slightly.
Dave Wilshere is offline  
Old 09-17-2019, 12:23 PM
  #6237  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks! The nut shall be removed. Brilliant... sometimes you can't see the forest for the trees as they say.
AEROSHELDON is offline  
Old 09-23-2019, 04:03 AM
  #6238  
BoomerSooner
My Feedback: (80)
 
Join Date: May 2005
Location: Norman, OK
Posts: 235
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Does anyone know if you can order the EVO with Electron retracts instead of the JP retracts?
BoomerSooner is offline  
Old 09-23-2019, 05:07 AM
  #6239  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Speak to whoever your Rep is. But the JP retracts are holding up great and are much lighter than the Electron set. My Joker is over 100 flights without a single retract issue
Dave Wilshere is offline  
Old 10-04-2019, 06:46 AM
  #6240  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

It would give me a bunch more space to add the Mercury under this plate.... any concerns with that??


AEROSHELDON is offline  
Old 10-04-2019, 10:46 AM
  #6241  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Not so easy to check connections, but since the screen is separate it should be fine.
Dave Wilshere is offline  
Old 10-04-2019, 10:56 AM
  #6242  
Dieselman1220
My Feedback: (25)
 
Dieselman1220's Avatar
 
Join Date: Feb 2004
Location: McAllen, TX
Posts: 801
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Hey DW, is the intake available as an option for the EVO?
my rep was unsure.
Dieselman1220 is offline  
Old 10-04-2019, 12:03 PM
  #6243  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Nope. But really it’s not needed. The UF small inlets and small fuse cross section has the least impact on drag of any model I have flown

Dave
Dave Wilshere is offline  
Old 10-05-2019, 06:43 AM
  #6244  
AEROSHELDON
My Feedback: (99)
 
AEROSHELDON's Avatar
 
Join Date: Mar 2002
Location: Highlands Ranch, CO
Posts: 968
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Originally Posted by Dave Wilshere View Post
Not so easy to check connections, but since the screen is separate it should be fine.
Thank you Dave. Yeah I do not like to bury things but I have ran out of room in there.
AEROSHELDON is offline  
Old 10-05-2019, 02:52 PM
  #6245  
paulhat
 
Join Date: Dec 2006
Location: , AUSTRALIA
Posts: 342
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Maybe put some hot glue, silicone or whatevs on the connectors.. Otherwise I would always be worrying one of those connectors was coming loose.
paulhat is offline  
Old 10-06-2019, 02:32 AM
  #6246  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

The second UF I built back in 2011 for P-80SE power reappeared at JMA Sculthorpe 2019 with latest owner Tobi Newton, now P-140Rx powered. As always there were other UF's flying.

Dave Wilshere is offline  
Old 10-06-2019, 05:03 AM
  #6247  
paulhat
 
Join Date: Dec 2006
Location: , AUSTRALIA
Posts: 342
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

It sure is an amazing model. Every time I fly mine I enjoy it.
paulhat is offline  
Old 10-06-2019, 09:18 AM
  #6248  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I was loving mine yesterday too, with a 2 mile runway and a big airfield I could give it some beans comfortably, it climbs faster than many models fly horizontally :-)
Dave Wilshere is offline  
Old 10-25-2019, 04:39 AM
  #6249  
cbk07
My Feedback: (64)
 
Join Date: Dec 2001
Location: farmington, CT
Posts: 623
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I have been keeping my eyes open for an Ultra Flash for a while, but nothing has been popping up within driving distance. A couple of guys have told me I would be happier with an original Ultra Flash than an Evo. Now that the Evo has been out for a while, can anyone that has flown both comment on the pros/cons of one over the other? From what I can gather, the Evo is lighter but slower. Thanks
cbk07 is online now  
Old 10-25-2019, 11:11 AM
  #6250  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 10,852
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Slower....!! Balls out top speed maybe a couple of MPH. I say maybe as the UF would suffer the least from not having full ducting. I can tell you a lighter airframe is better, so the Evo is a better version of a really good airframe.
Dave Wilshere is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.