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-   -   What would a gas engine be compared to a glow (https://www.rcuniverse.com/forum/beginners-85/10717549-what-would-gas-engine-compared-glow.html)

goirish 09-15-2011 05:32 AM

What would a gas engine be compared to a glow
 
What size gas engine would be compared to a 180 4 stroke. Need to know if my 180 will be OK for my new build.

k1201ltc 09-15-2011 06:26 AM

RE: What would a gas engine be compared to a glow
 
Please don't take my advice on it, but comparing a 1/4 scale DP Cub I am seeing running on 4-stroke OS 200 with pump and my 1/4 scale Balsa USA cub running a G23 , I would think that a G26 would be closer to whatyou may like.

MinnFlyer 09-15-2011 06:32 AM

RE: What would a gas engine be compared to a glow
 
What are you building Gene?

goirish 09-15-2011 06:41 AM

RE: What would a gas engine be compared to a glow
 
1 Attachment(s)
The Cobra-calls for a 50 gasser.

MinnFlyer 09-15-2011 06:44 AM

RE: What would a gas engine be compared to a glow
 
If it calls for a 50, a 180 4-stroke glow will MAYBE get it airbourne

goirish 09-15-2011 06:49 AM

RE: What would a gas engine be compared to a glow
 
Hey if I don't fly more than a couple of feet in the air, I might survive a crash:D:D:D

jetmech05 09-15-2011 07:41 AM

RE: What would a gas engine be compared to a glow
 
A 180 4 stroke would be way under powered for a 50 gasser.....a 50CC gasser is, math wise, roughly a 300 2 stroke glow

goirish 09-15-2011 07:50 AM

RE: What would a gas engine be compared to a glow
 
Probably would not get it out of ground affect, ya think. Looks like I am going to have to break into the piggy bank.

RCKen 09-15-2011 07:52 AM

RE: What would a gas engine be compared to a glow
 


ORIGINAL: jetmech05

A 180 4 stroke would be way under powered for a 50 gasser.....a 50CC gasser is, math wise, roughly a 300 2 stroke glow
What he said!!!!

Ken
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goirish 09-15-2011 08:06 AM

RE: What would a gas engine be compared to a glow
 
I like to fly SLOW[b][/b][X(][X(][X(]

Edwin 09-15-2011 08:33 AM

RE: What would a gas engine be compared to a glow
 
1.80 4-stoke =~ 30cc
1.20 4-stoke =~ 20cc (I have run both in the same plane and found the power to be the same (Saito 120, RCGF 20cc))
3.2 2-st gas =~ 50cc

Rough estimations I use, (10cc =~ .60ci).
Edwin

opjose 09-15-2011 08:50 AM

RE: What would a gas engine be compared to a glow
 


I'd revise that down a bit... though some gasser engines are more powerful for a given size than others.

1.80 4-stoke glow =~ 30cc gas
1.20 4-stoke glow =~ 26cc gas
.91-1.00 4 stroke =~ 20cc gas
35cc 2-st glow ( e.g. BGX-1 OS engine ) =~ 50cc


goirish 09-15-2011 09:16 AM

RE: What would a gas engine be compared to a glow
 
Sounds like I will have to buy a gasser. I don't want to end up with a land rover with wings:D:D:D

MetallicaJunkie 09-15-2011 09:21 AM

RE: What would a gas engine be compared to a glow
 

ORIGINAL: opjose



I'd revise that down a bit... though some gasser engines are more powerful for a given size than others.

1.80 4-stoke glow =~ 30cc gas
1.20 4-stoke glow =~ 26cc gas
.91-1.00 4 stroke =~ 20cc gas
35cc 2-st glow ( e.g. BGX-1 OS engine ) =~ 50cc



good revision..... the other list is outdated....todays reed inducted gas motors are pretty much on par with the same displacement glow engines....

my dle 20 puts out what my 120ax and saito 150 does and my 30cc vs 1.60fx

scooterinvegas 09-15-2011 09:23 AM

RE: What would a gas engine be compared to a glow
 
The DLE-20 pulls the same prop at the same RPM as a OS 120AX.

Charlie P. 09-15-2011 09:25 AM

RE: What would a gas engine be compared to a glow
 
1 Attachment(s)


ORIGINAL: goirish

I like to fly SLOW[b][/b][X(][X(][X(]
We had a Cobra at our annual IMAAFly-In a few years ago with, as Irecall, a twin 300 Saito. It was the next fastest thing to a jet! This is a model of a full-scale racing biplane. Not the best choice for a leisurely fun biplane.

The pilot did give it rave reviews as a nice handling model, however. He was knife-edging and stunting it beautifully.

opjose 09-15-2011 09:29 AM

RE: What would a gas engine be compared to a glow
 

ORIGINAL: scooterinvegas

The DLE-20 pulls the same prop at the same RPM as a OS 120AX.
The AX is a two stroker though and it should be pulling a smaller prop at higher RPM's than the DLE.

Out of curiosity, what RPM's did you clock using which props?


dasquirrelisme 09-15-2011 10:24 AM

RE: What would a gas engine be compared to a glow
 
I wouldnt even want to know how much fuel a 300 glow engine would use......ok maybe I would but wouldnt want to pay for it :D

goirish 09-15-2011 10:26 AM

RE: What would a gas engine be compared to a glow
 
Any good deals on a 50 size, remember now, I'm po folks

kiwibob72 09-15-2011 11:24 AM

RE: What would a gas engine be compared to a glow
 
The DLE range of motors are getting good reviews, and are really 'cost effective' options ..... I;m looking to stick a DLE20 into a H9 60 sized P51 (it actually fits with a wraparound pits muffler!)

scooterinvegas 09-15-2011 11:47 AM

RE: What would a gas engine be compared to a glow
 

ORIGINAL: opjose


ORIGINAL: scooterinvegas

The DLE-20 pulls the same prop at the same RPM as a OS 120AX.
The AX is a two stroker though and it should be pulling a smaller prop at higher RPM's than the DLE.

Out of curiosity, what RPM's did you clock using which props?


I only have DLE-20's and 30's, no 120AX. But in the DLE-20 thread here on RCU, people were comparing the two and they run the same numbers within about 50 RPM's. Favoring the DLE. Im not going to split hairs over a 50 RPM, so I just said they run about the same numbers. :)

Edwin 09-15-2011 11:56 AM

RE: What would a gas engine be compared to a glow
 
I have the DL50, precursor to DLE55. Been a good engine so far. A buddy has one with a lot of hours on it. He likes it.
Edwin

davidhand 09-15-2011 12:13 PM

RE: What would a gas engine be compared to a glow
 
I just assembled a Great Planes Giant Big Stick, it calls for an OS 180 2 stroke, I installed a DLE 30, it seems to be about right. Based on that I'd say that an OS 120 2 stroke was about equivalent to a DLE 20 and an OS 180 2 stroke equivalent to a DLE 30. Hope this helps.

Gray Beard 09-15-2011 12:30 PM

RE: What would a gas engine be compared to a glow
 
Gene, my 1.40 RCS is a 22cc but rear induction and high performance, no longer made or imported. My Brison 2.4 is a 40cc and gives about the same performance as the DA 50, also no longer made that I know of. The DLE 55 is a super buy. If you know any group of guys that get together and order from Hobby King and pay for the express shipping the price of the DLE is even cheaper from them. It's an outstanding engine for the price. Just toss the spark plugs that come with any of them and they are perfect out of the box.

MetallicaJunkie 09-15-2011 12:57 PM

RE: What would a gas engine be compared to a glow
 


ORIGINAL: Gray Beard
My Brison 2.4 is a 40cc and gives about the same performance as the DA 50, also no longer made that I know of. The DLE 55 is a super buy.

are you sure about that, did you mean 3.2?.... my dad used to have a 2.4 and it would swing 18" props around mid 7s similar to what a DLE 30 can do



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