4-STROKE vs 2 STROKE?

4-STROKE vs 2 STROKE?

Post by David Fishe » Sun, 14 Jun 1998 04:00:00



Quote:

> Hi,im just getting back into flying r/c and am building a new one.Can someone
> tell me what the  pro and cons are of useing a 4 stroke? Are they harder to
> start than a 2 stroke? Can you use a hand electric starter? Are they harder to
> keep running and get started?
> Thanks Dave..
> KB8MCZ
> DAVID T GARDYNIK
> SHIOCTON,WI

The 4 strokes get a bad rap since most guys are used to tuning their 2
strokes and they end up getting adjusted incorrectly.  A well adjusted 4
stroke is just as easy to handle as a 2 stroke and takes less
adjustments as a bonus.  The thing to remember is that they don't like
to be "peaked" on the mix like a 2 stroke.

Theoretically they have a greater chance of failure due to the larger
number of moving parts but I've found that even my cheap ASP is really
reliable.  And the sound is WAY cooler than a two stroke, IMO!

As far as starting, mine are easy to hand start but they don't take much
of an electric starter to get running.  They don't have quite the
compression of an equivalent two stroke at rest.

--
------------------------
David Fisher
Chico, CA

------------------------

 
 
 

4-STROKE vs 2 STROKE?

Post by KB8M » Mon, 15 Jun 1998 04:00:00


Hi,im just getting back into flying r/c and am building a new one.Can someone
tell me what the  pro and cons are of useing a 4 stroke? Are they harder to
start than a 2 stroke? Can you use a hand electric starter? Are they harder to
keep running and get started?
Thanks Dave..
KB8MCZ
DAVID T GARDYNIK
SHIOCTON,WI

 
 
 

4-STROKE vs 2 STROKE?

Post by Wells Sulliva » Mon, 15 Jun 1998 04:00:00


2-strokes are cheaper and cheaper to fix if they get damaged in a crash.

I prefer 4-strokes myself.  They don't put out as much power / displacement /
weight but can swing a bigger prop compared to a 2-stroke of similar power.  This
means more thrust for takeoffs and climb.  I think 4-strokes last longer too in
the long run.  Scale models should all have 4-strokes!  <G>  If you are learning,
you may be better off with a 2-stroke for simplicity and cost and then go with the
4-stroke later on to put in your 'dream plane'.  4-strokes don't go through plugs
as fast either and are pretty good on the fuel.

 
 
 

4-STROKE vs 2 STROKE?

Post by Robbie&Laura Reynold » Mon, 15 Jun 1998 04:00:00


Quote:

> Hi,im just getting back into flying r/c and am building a new one.Can someone
> tell me what the  pro and cons are of useing a 4 stroke? Are they harder to
> start than a 2 stroke?

No.

Quote:
> Can you use a hand electric starter?

Yes.

Quote:
> Are they harder to
> keep running and get started?

No.

Pros:  They look better, they sound better, they are more aesthetically pleasing
in every way, they sling less oil around, and it's nice to know that all those little
parts are working like a swiss watch.

Cons:  They cost more to buy, and they cost more to repair.  Worth every penny, though.

I especially like the saito 91, and the 26 and 40 surpass.

Robbie

--
Remove anti-spam "X" from return address to reply.
Don't sweat the petty things.  And don't pet the sweaty things either.

 
 
 

4-STROKE vs 2 STROKE?

Post by GUTH » Mon, 15 Jun 1998 04:00:00


I have Saito .91 and .56GK, along with the normal assortment of 2 stroke
engines.  When heading for the field, I just don't feel right if I don't take
one of the 4s along.  The 4 strokes when properly set up are the nuts.
               ^^                        
             ^^^^^                    
Las Vegas Sports Flyer
             ^^^^^
               ^^

 
 
 

4-STROKE vs 2 STROKE?

Post by Paul McIntos » Mon, 15 Jun 1998 04:00:00


And dollar for dollar, they are a beter value because they are so versatile.  Run on
low nitro, they are great putt around engines.  Bump up the nitro, and most 4-strokes
will run with any two stroke.  In any comparison, the YS .91 seems to be king of the
heap for power, reliability, cost, and ease of use.

Quote:

> 2-strokes are cheaper and cheaper to fix if they get damaged in a crash.

> I prefer 4-strokes myself.  They don't put out as much power / displacement /
> weight but can swing a bigger prop compared to a 2-stroke of similar power.  This
> means more thrust for takeoffs and climb.  I think 4-strokes last longer too in
> the long run.  Scale models should all have 4-strokes!  <G>  If you are learning,
> you may be better off with a 2-stroke for simplicity and cost and then go with the
> 4-stroke later on to put in your 'dream plane'.  4-strokes don't go through plugs
> as fast either and are pretty good on the fuel.

--
Paul McIntosh
Desert Sky Model Aviation
ARFs, Kits, Engines
================================
http://www.dancris.com/~warbird/
================================

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4-STROKE vs 2 STROKE?

Post by Vinc » Mon, 15 Jun 1998 04:00:00


Quote:

> Some guys swear by them, but I prefer a two stroke, simpler, lighter, and more
> power to weight ratio, also  cost about half as much.  I you're an engine guy
> I'd say get one, but if you just want power for a standard type fun flyer, I'd
> got with the two stroke.

Ahhhh a breath of fresh air.

Vince
AMA 266036

 
 
 

4-STROKE vs 2 STROKE?

Post by RCKRZ » Tue, 16 Jun 1998 04:00:00


A 4 stroke sounds better . period

                                         Adam

And after breakin they run just as if not more reliable than a 2 stroke.
Adam Tucker
AMA 520901
Hurst Tx

 
 
 

4-STROKE vs 2 STROKE?

Post by Gary Spear » Thu, 18 Jun 1998 04:00:00


Quote:
> Ahhhh a breath of fresh air.

> Vince
> AMA 266036

Too bad it's blowing the wrong way!!