Gas Engines Questions or comments about gas engines can be posted here

DLE 20cc Gasser! (Data & Links 1st Post)

Old 08-11-2012, 04:23 AM
  #5676
ahicks
 
Join Date: Aug 2008
Location: Waterford, Mi/Citrus Springs, Fl
Posts: 3,457
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: Twin_Flyer

I have no problem understanding the setup, all of them.

My question was, IF you feed the CDI AND the RX via one battery, without some sort of an isloater, isnt there a chance of ignition noise causing interference with the RX?

IE, noise feeding back from the CDI box into the RX via a commen battery connection.

Thats all....

I have only run my DLE 30 on a stand so far, so this part of the hobby is very new to me, though I have been flying since '87.

Bill S.
On the bold, the tech guys will have you convinced there's a potential. The bunch of guys that are actually out there running this setup (for the last few seasons) will tell you that it works fine, no issues. That's it in a nutshell. It's your call to make from there....
ahicks is offline  
Reply With Quote
Old 08-11-2012, 09:29 AM
  #5677
sandyjain
 
Join Date: Dec 2008
Location: New Delhi, INDIA
Posts: 241
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Bill I never said That I do not use an optokill - I said I use an RcEXL one.
I use Life batts. That have 2 Futaba /JR type plugs. 1 goes to the Rx switch and the other to the CDi switch.
The out wire of th CDi switch has the diode.
The diode wire of the switch then goes into the optokill and then onwards to the CDi.
Hence the battery is isolated from the CDi and so is the Rx.

2.4 Ghz systems are inherently less prone to interference.

I use the 1 battery system for only upto 20cc engines/ models. Beyond 20cc or models with digital servos, should be run with 2 batts. May be even redundant/ 2nd battery for the Rx.
sandyjain is offline  
Reply With Quote
Old 08-11-2012, 10:01 AM
  #5678
Twin_Flyer
 
Join Date: Jan 2002
Location: Westhampton Beach, NY
Posts: 831
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: sandyjain

Bill I never said That I do not use an optokill - I said I use an RcEXL one.
I use Life batts. That have 2 Futaba /JR type plugs. 1 goes to the Rx switch and the other to the CDi switch.
The out wire of th CDi switch has the diode.
The diode wire of the switch then goes into the optokill and then onwards to the CDi.
Hence the battery is isolated from the CDi and so is the Rx.

2.4 Ghz systems are inherently less prone to interference.

I use the 1 battery system for only upto 20cc engines/ models. Beyond 20cc or models with digital servos, should be run with 2 batts. May be even redundant/ 2nd battery for the Rx.

In your message dated 8/10/12 you did not mention any type of optokill...

"A dedicated battery is not necessary at all. I run my smaller gassers - dle20 - with just 1 batt feeding the Rx n CDi.
What I like to do is to have 2 swithes....1 fr Rx n other fr CDi. In the wire fom the switch to the CDi I attach the diode.

And yes this works for Life only. for LiPo you will need more diodes, in which case an Ibec may be better.

But I will highly reccomend Lfe for CDi as they give a constant voltage over 80% of their life."


In the end I was just wondering if there any RF issues doing that. I know there are the types who HAVE to use all the new devices just because.

I prefer the KISS system anytime I can!

I do not fly 2.4 ghz (which is why I was asking about RF noise) and I see no reason to change at this time. And with some club members making the switch, there is even less reason (for me) to spend the $$. I have been flying since '87 and only crashed twice due to radio issues. Both times my fault, not the radio itself. Crashed a lot of times over the years actually! lol

As I'm not aiming for a 3D type plane for my 20, i will probably run separate batteries and not worry about the extra weight. On my DLE30 powered Cap, I plan on running two batteries for the RX and one for the cdi.

I do like the idea of using a Life battery with a diode (or two) for the voltage drop. Nice and simple!

Thanks,
BIll S.
Twin_Flyer is offline  
Reply With Quote
Old 08-11-2012, 10:08 AM
  #5679
aerobear
 
Join Date: May 2003
Location: Sandy, UT
Posts: 179
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: microdon2

Aerobar \ Sandy Jain - Sounds like using that diode is a good option if you already have the extra battery and swith \ charging jacks. If not, then the Ibec seems like a good - somewhat cheaper - and lighter alternative to a dedicated ignition battery. Agreed?
Depending on your choices and sources of switches and batteries the price may start be be comparable although I don't see it being cheaper. I make my own packs to get the type and number of wires/connectors I want. It also happens to be cheaper than a commerically finished pack. The price of the Ultra IBEC has dropped quite a bit since I last looked at it. If the Ultra IBEC has features that you value highly then the price may be irrelevant. Even though I look for great values I am far from penny wise and pound foolish. I have spent lavishly on RC stuff when I thought it was worth it. Having been frugal were it makes sense makes the occasional lavish purchase much easier.
aerobear is offline  
Reply With Quote
Old 08-11-2012, 03:40 PM
  #5680
RiverLarry
 
Join Date: Aug 2009
Location: Newaygo, MI
Posts: 210
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

+ 1 buy cheep by often !!!

The IBEC are great !!!! a 2000 ma NIMH about 3 15 minn. flights !!! and could make 4

kill suitch and a step down for IING 5.4 V
RiverLarry is offline  
Reply With Quote
Old 08-11-2012, 05:35 PM
  #5681
aerobear
 
Join Date: May 2003
Location: Sandy, UT
Posts: 179
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: RiverLarry

+ 1 buy cheep by often !!!

The IBEC are great !!!! a 2000 ma NIMH about 3 15 minn. flights !!! and could make 4

kill suitch and a step down for IING 5.4 V

Cheap and inexpensive don't mean the same thing. Those that don't understand the difference are an easy mark.
aerobear is offline  
Reply With Quote
Old 08-11-2012, 05:44 PM
  #5682
nomadmariner
 
Join Date: Jul 2011
Location: MacleanNew South Wales, AUSTRALIA
Posts: 33
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I will take the ibec for my gassers I use diodes often for other applications but prefer to fork out a few extra dollars for a quality item that will eliminate any questions. Just my own preference and I readily concede that others have their own opinions but I work on the fact that these are heavy fast flying missiles and I feel more comfortable with the ibec in my planes.
nomadmariner is offline  
Reply With Quote
Old 08-12-2012, 09:19 AM
  #5683
raydar
 
Join Date: Sep 2009
Location: stirling, UNITED KINGDOM
Posts: 436
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I bought a ibec for one of my planes, nice product and works well but I wont buy another, why, because simply I have another three gassers running a single homemade life pack for ignition and rx with no stepdown for rx and I have had zero issues. I am on 2.4 ghz..

I understand the ignition does not require any more than 4.8v, that I will not get a better spark, my ignition will fail prematurely bla bla bla.

If worried about the 6.6 volts then as someonehas said fit a diode, been there done that too, works well for a 0.7 volt drop, but I dont even bother doing that now.

raydar is offline  
Reply With Quote
Old 08-12-2012, 01:00 PM
  #5684
mach2
 
mach2's Avatar
 
Join Date: Nov 2011
Location: bakersfield, CA
Posts: 1,107
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I just like it because it works great. Gives a constant 5.2v to the ign. I love the LED & the optikill. Most of all I like the reliability because im not a real techno guy. I personally will pay a few bucks for insurance on my planes. Ive had bad luck all my life trying to do stuff cheaper, that eventually causes me a lot more money in the long run.

But thats cool for the guys who have the know-how and can-do, to do stuff like make their own batt backs and voltage regulators.

Can you use more diodes to reduce the voltage more? Id want to drop it to less than .7. That would only really bring the actual voltage of a LiFe battery down to its advertised 6.6v.
mach2 is offline  
Reply With Quote
Old 08-12-2012, 01:22 PM
  #5685
triumphman49
 
Join Date: Sep 2005
Location: Decatur, AL
Posts: 364
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

using 2 diodes in series, for LIFE batteries on ignition service, seems to be the norm.

T-man49
triumphman49 is offline  
Reply With Quote
Old 08-12-2012, 10:07 PM
  #5686
sandyjain
 
Join Date: Dec 2008
Location: New Delhi, INDIA
Posts: 241
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Post no. 5646 of 8/10/12?
2ndly Bill if you have a radio that can take a FRsky module- try that. I use it on my Futaba 9 & 10 C. Works like a charm and most inexpensive way to 2.4 . Tx module with 8 channel Rx costs about usd 60.

LiFe batts come down to 3.3V/ cell within few min. Or seconds and remain at that for 80%+ of their life. You can check it. So a 2S life is actually a 6.6V output not 7.2 going to 6.6. 1 diode is fairly sufficient.

My double switch with fuel filler, 2100 2s Life batt, optokill with LED and the diode cost less than USD 50 landed.


sandyjain is offline  
Reply With Quote
Old 08-13-2012, 03:59 AM
  #5687
ahicks
 
Join Date: Aug 2008
Location: Waterford, Mi/Citrus Springs, Fl
Posts: 3,457
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: sandyjain

Post no. 5646 of 8/10/12?
2ndly Bill if you have a radio that can take a FRsky module- try that. I use it on my Futaba 9 & 10 C. Works like a charm and most inexpensive way to 2.4 . Tx module with 8 channel Rx costs about usd 60.

LiFe batts come down to 3.3V/ cell within few min. Or seconds and remain at that for 80%+ of their life. You can check it. So a 2S life is actually a 6.6V output not 7.2 going to 6.6. 1 diode is fairly sufficient.

My double switch with fuel filler, 2100 2s Life batt, optokill with LED and the diode cost less than USD 50 landed.

X2 on the bold (including price!). 6.6v within minutes once you get a load on the A123/LiFe. Confirmed watching Hitec A9 flight pack telemetry.
ahicks is offline  
Reply With Quote
Old 08-13-2012, 06:41 AM
  #5688
SpinnerRow
 
SpinnerRow's Avatar
 
Join Date: Oct 2008
Location: Flower Mound, TX
Posts: 1,372
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: ahicks


Quote:
ORIGINAL: Twin_Flyer

I get that, but Sandy said he wasnt using the optikll so his setup is what I wanted to clarify...

Bill S.
I'm going to assume that we're talking 2.4 rigs installed in 20-30cc planes (possibly smaller, maybe a little bigger, some 50cc guys are running it)? Whatever, someplace we might want to use a light weight, single battery system, including those with digital high torque servos, though that's not necessarily the case.

On single battery set ups, I think most guys are using 2 sets of wires coming from a single battery (at least 2, regardless of battery chemistry). Those 2 leads feed 2 switches (hopefully HD switches with fairly heavy wire). One of those 2 switches feed the receiver as you would normally. How the second is set up depends on the individual.

With SpinnerRow's setup (above), the second switch feeds the power ''in'' line on his opti switch. Nice and simple.
I only have one switch. Two ouputs on the switch. One to the RX, one to the optikill.
SpinnerRow is offline  
Reply With Quote
Old 08-13-2012, 07:04 AM
  #5689
ahicks
 
Join Date: Aug 2008
Location: Waterford, Mi/Citrus Springs, Fl
Posts: 3,457
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Sorry Spinner, my mistake. -Al
ahicks is offline  
Reply With Quote
Old 08-13-2012, 07:37 AM
  #5690
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,278
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Well, I didn't find anything wrong with my connections, I also found my voltage regulator does work. When I had first installed it in the 4* after pulling it from the wrecked Dewey I thought it was not working. I reinstalled it yesterday, checked all the connections, and started up the motor.  I ran it for 5 minutes at all throttle settings, without the wing on, picked up the fuse and held it at various angles, except for straight down, that would kill it for sure. Not once did the ignition burp.  

Hopefully problem resolved as a loose connection. Still thinking it was the switch itself, it was pressed against the tank and may not have been fully connected.  

Here's hoping no more issues and I can actually run a tank through it while in the air and not on the ground. Seems like every time I get in the air, something goes amiss and I have to land.  A couple weeks ago, a wheel pant came off, last week the ignition kept cutting out. Darn it only have 4 flights on the plane! 
acdii is offline  
Reply With Quote
Old 08-13-2012, 01:14 PM
  #5691
WindGap
 
Join Date: Aug 2010
Location: Irmo, SC
Posts: 228
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Which of the two jtec pitts muffler would be quieter?
WindGap is offline  
Reply With Quote
Old 08-14-2012, 05:38 AM
  #5692
SpinnerRow
 
SpinnerRow's Avatar
 
Join Date: Oct 2008
Location: Flower Mound, TX
Posts: 1,372
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: WindGap

Which of the two jtec pitts muffler would be quieter?
I've got both the compact wrap around pitts and the regular wrap around pitts. The bigger one makes the motor sound more like a DLE 30 - more deep and resonate tone and the compact sounds about the same as the stock muffler but takes 300rpm off the top end. I had to use the compact pitts in a World Models P-51 to clear the cowl and it worked well. I plane to try the Valley View wrap around Pitts next.
SpinnerRow is offline  
Reply With Quote
Old 08-14-2012, 11:25 AM
  #5693
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,278
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

mine still sounds like a chain saw even with the PITTS muffler.    Guess I better go find some Husquavarna stickers for my plane.
acdii is offline  
Reply With Quote
Old 08-14-2012, 06:39 PM
  #5694
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,278
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

OK my flying weedwacker is FINE!  Flew it for about 15 minutes tonight, and it flew great.  Dang it, still have half a tank of gas left though.  I'm finally getting some flight time on my DLE20.
acdii is offline  
Reply With Quote
Old 08-16-2012, 12:37 PM
  #5695
Falcon32
 
Falcon32's Avatar
 
Join Date: May 2006
Location: Neath, UNITED KINGDOM
Posts: 332
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Hi Guys
I have a question on the DLE 20.
Mine runs great, good idle, transition and top end, but it's a bit sluggish to start first time of the day.
What's your preferred method of starting this one? Choke position, throttle position etc.

Thanks
Falcon32 is offline  
Reply With Quote
Old 08-16-2012, 01:05 PM
  #5696
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,278
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Full choke, 1/4 throttle, and watch your hands.  Once it pops off let it run a little bit before taking off the choke.
acdii is offline  
Reply With Quote
Old 08-16-2012, 01:12 PM
  #5697
FSFLYER
 
Join Date: Apr 2004
Location: Sykesville, MD
Posts: 115
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I was having trouble starting mine before the first flight of the day. Took something like over 60 flips to get it to pop with the choke on. I think it just doesn't have a strong fuel draw on choke. I have a fueling "T" in the line from the tank to the carb. I now fuel the tank until it spills a little bit out of the vent. Without removing the fueling line, I close the choke and with the ignition off, flip the prop 4-5 times. Disconnect the fueling line, turn the ignition on and flip with the choke on. It usually pops in a few flips. open the choke and its starts withing 4-5 flips. Nice thing is it sits sometimes over an hour between flights....it will usually start with one flip...no choke. Great little engine! I think my starting problem was that when I removed the fueling line I introduced air into the line. By choking with the fueling line still connected seems to be a simple fix. Would be interesting to see if this works for you too.
FSFLYER is offline  
Reply With Quote
Old 08-16-2012, 03:57 PM
  #5698
ahicks
 
Join Date: Aug 2008
Location: Waterford, Mi/Citrus Springs, Fl
Posts: 3,457
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Check your choke plate to see if it's really sealing the the carb throat properly. You may have to loosen the screw and let it recenter. While you're at it, seal up that hole in the choke plate. Solder works good, but there are other solutions as well. It doens't need to be there for our application. That done, then you should be drawing some fuel when the choke is closed....
ahicks is offline  
Reply With Quote
Old 08-17-2012, 05:01 AM
  #5699
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,278
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Electric starters work wonders on the first start of the day.
acdii is offline  
Reply With Quote
Old 08-17-2012, 06:48 PM
  #5700
mach2
 
mach2's Avatar
 
Join Date: Nov 2011
Location: bakersfield, CA
Posts: 1,107
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Hey Spinner. What size P51 did you put it in? Ive got the .46 size and I am running a Thunder TIger .61 Pro in it. I love that little plane (Miss America).  I picked it up from a guy getting out of the hobby for $100 bucks. I know guys put big motors in them for racing. I actually thought for a second about putting a DLE20 in it.  It would land at 1000mph, but it would be a blast in the air!

Jeremy
mach2 is offline  
Reply With Quote


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 11:41 PM.