Questions and Answers If you have general RC questions or answers discuss it here.

1st attempt at gas, MAYBE!!

Reply

Old 08-18-2010, 08:09 PM
  #1  
josh42575
Junior Member
Thread Starter
My Feedback: (6)
 
Join Date: Dec 2009
Location: Peru, IN
Posts: 22
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default 1st attempt at gas, MAYBE!!

I recently got hold of a Great planes 1/4 scale extra 300 and i'm not sure what to power it with. Ive flown large scale planes but never owned one. The plane calls for a 180 four stroke or a 25cc gas. Im thinking of a good 30cc but im not sure which would be the better or more reliable option. I can get a saito 180 FS which i am much more familiar with but gas is most certainly an option. Im not sure of what are the better engines out there. I'm sure of Saito and if i go with gas im looking for the same reliability. any imput would be greatly appreciated!!!
thanks,
Josh
josh42575 is offline  
Reply With Quote
Old 08-18-2010, 08:54 PM
  #2  
basman
Senior Member
 
Join Date: Jun 2008
Location: Brisbane Queensland , AUSTRALIA
Posts: 349
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!

Josh welcome to the dark side ????? IMHO you can't go past DLE a 30cc rear carb or even side carb if cowl has the room. I have 50 Dl ( deceased front in at 1/2 throlte ) 2/ 55DLE and a 30DLE side carb. I love these motors good price can be picked up local or OS if you are an internet trader heaps of parts muflers readly available.

The 30 DLE I have mounted in a Seagull Super Star 69.3inches http://www.rcuniverse.com/product_guide/kitCompare.cfm
Heaps of power easy to start cheap fuel. I haven't got say more than 8-10 flights on it just because my attention is with the 55 DLE's and doing a lot of practice with that size plane. How every I did hear roomer that there had been some idling issues with the 1st batch 30DLE. Having said that I have had none to speak of and find thier motors awesome.
It wouldn't be hard to find a forum on these motors here somewhere.

One point, don't bench run these motors in. They are air cooled and require that air flow over the fins to maintain a good operating temp. Start em up get it running good ( I haven't had to adjust one from factor set for start up yet ) and get them in the air. Don't do a lot if any long verticle and no hovering. Run them in on standard oil, say lawn boy not synthetic @ 40:1 ADJUST THE RPM RANGE UP AND DOWN !!!!!
I usally mix up a 5lt container of fuel at this mix, then reduce to 32:1 on synthetic premium fuel after that 1st 5lt of fuel.
You can change the plugs if you chose I have had good results with both standard plug and after market.


What wing span What weight the Extra ?
basman is offline  
Reply With Quote
Old 08-18-2010, 09:05 PM
  #3  
josh42575
Junior Member
Thread Starter
My Feedback: (6)
 
Join Date: Dec 2009
Location: Peru, IN
Posts: 22
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!

75" wing span.  My neighgbor is innto large scale aerobats.  I wont have the instruction manual till tomorrow so i cant even remember if it is the great planes model.  I traded a 40 size Ultimate w/ a saito 82 for the plane unused.  The ultimate was beat up but the engine was good so i figure it was a fair deal but now im looking for that unlimited vertical im used to by overpowering my smaller planes.  "60 size extra w/ a saito 115"  type of pull.   without all the extra weight.  Ive got about $350 to spend without having to spend any more on a divorce lawyer so i know im limited but i dont want to sacrifice power and especially reliability. 
I heard the same thing about the DLE 30 but heard the newer or updated version with rear carb has solved their issues

josh42575 is offline  
Reply With Quote
Old 08-18-2010, 09:28 PM
  #4  
josh42575
Junior Member
Thread Starter
My Feedback: (6)
 
Join Date: Dec 2009
Location: Peru, IN
Posts: 22
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!

It is the Great Planes Avemco sponsored Extra 300
josh42575 is offline  
Reply With Quote
Old 08-18-2010, 10:06 PM
  #5  
Gray Beard
My Feedback: (-1)
 
Join Date: Apr 2003
Location: Hemderson, NV
Posts: 14,380
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!

I don't even have to give it any thought, the DLE 30cc. I like the side mounted carb but only because it's easier to set up but both rear and side carbs are great engines.
Gray Beard is offline  
Reply With Quote
Old 08-19-2010, 05:28 AM
  #6  
basman
Senior Member
 
Join Date: Jun 2008
Location: Brisbane Queensland , AUSTRALIA
Posts: 349
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!

Josh Divorce lawer we have all been there !!!!!!!!!!!!!!!!!!!!!!
If you are one for over powering then here are a couple Iv'e done

1. Sig Extra 300s 72" wing span (DL 50 )
2. Edge 540 77" wing span ( DL 50 )
3. Great Planes Sukhio SU 31 77" wingspan Dle 55 )
All worked extreemly well as it was a choice of lead weight or usable power, so I opted for power and thats what I got , unlimited verticle short take off's and almosy enough power to be close to much ...alost

The Extra I actually had to move the fire wall back 20mm but gave me a change to strenghen the landing gear, all the others the motors fitted straight in. Now because of ground clearance I ran a 20x10 prop with no issues. It didn't over rev the motor and the only time you full throtle was verticle up lines.

You can go here for a thread on the Sukhoi http://www.rcuniverse.com/forum/m_61..._1/key_/tm.htm
The reason I mention this tread is there is a comparison between the 30 and 55 DLE, both have been installed and flying so you can work it out for yourself. The reason I choose the 55 was as I said either weight or power I have every thing up as far forward as possiable and got a perfect balance that included bringing the rudder servo forward not mounted in the tail as suggested.

I am not famillar with the GP Extra 300 so there might be some home work on your part. By the way I fly a Aeroworks 300 Extra .............................love the Extra it does all I want

Hey the GP Sukhoi is a beauty two I get comments every time it's at the feild, nice build too covering and all good job Great Planes [8D] [8D][8D]

basman is offline  
Reply With Quote
Old 08-19-2010, 05:31 AM
  #7  
basman
Senior Member
 
Join Date: Jun 2008
Location: Brisbane Queensland , AUSTRALIA
Posts: 349
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!

Extra 300

Edge 540

Sukhio SU 31
Attached Thumbnails Click image for larger version

Name:	Bz78194.jpg
Views:	31
Size:	190.3 KB
ID:	1486426   Click image for larger version

Name:	Hf98401.jpg
Views:	29
Size:	71.4 KB
ID:	1486427   Click image for larger version

Name:	Us52818.jpg
Views:	40
Size:	78.0 KB
ID:	1486428  
basman is offline  
Reply With Quote
Old 08-28-2010, 03:25 PM
  #8  
josh42575
Junior Member
Thread Starter
My Feedback: (6)
 
Join Date: Dec 2009
Location: Peru, IN
Posts: 22
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!



UPDATE!!!!!!!!!!!!!!!!!!!!!!
went with the FUJI IVMAC 43.   Very easy to start the first time.  ran through about a gallon on the ground with a 20-8 prop.  Saw some elevator flutter which turned out to be the servo reverser i was using.  got rid of it and used mixing instead.  flutter gone.    taxi out and off she went. 

BEAUTIFUL!!!!!!!!!!!!!!!!!!!     lots and lots of power!!!!!!!!!!

josh42575 is offline  
Reply With Quote
Old 08-22-2012, 11:04 AM
  #9  
billgiacomo615
My Feedback: (111)
 
Join Date: May 2008
Location: sapulpa okla
Posts: 35
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 1st attempt at gas, MAYBE!!

where can i find the instructions how to change it from side to rear,i bought a dle30, used one, all the parts are there are there,but there are no instruction, where can i get the instructions that tells how to do it
billgiacomo615 is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service