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Item found in the following categories;
> Gas/Glow Engines & parts > IC Glow Engines

PRODUCT ID: S21A
RATED:
ASP S21A Two Stroke Glow Engine
ASP S21A Two Stroke Glow Engine


Tired of all those electric planes infesting your local club?
This high-rpm huge power glow engine can swing a 8x6 prop with ease. No need to worry about expensive batteries here. Just re-fuel and youre off.
Scream through the sky all day with our 21 size 2-stroke glow engine.
 
ABC construction, Aluminum piston with Brass liner thats Chrome plated
Dual ball bearing-supported crankshaft
Dual needle valve carburetor with remote High Speed Needle Valve
Dual bushing-supported connecting rod


Spec.
Displacement: 3.34
Bore: 16.30mm 
Stroke: 16.00mm 
Suggested prop: 8*6
RPM: 2,500 ~ 19,000
Weight: 233g 


 
589g Back warehouse: 0 10+ $39.99
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 Customer rated 5 crowns   
 
View all comments | (20 threads)
Ask a question
25/08/2010
glenn (80%)
I have waited 7 weeks for my engine as of 25/08/10. How much longer must I wait before delivery?
28/07/2010
Alex (100%)
Hey there,
Does it come with glow plug? or do i need to buy one? if so what is best with this engine?
   modeltronics (84%)
No plug is included with the engine. A standard Fox plug would work fine.
24/07/2010
sarpet (72%)
where is all GLOW PLUGS??
20/07/2010
ujklkjl (67%)
hello. this engine can run only on gasoline and oil ?
   modeltronics (84%)
This engine runs on glow fuel
   chapier61 (70%)
Glow fuel: or you buy it in your local modeller store, or you make it yourself mixing 75 to 80 % (good)methanol with 25 to 20 % "castor oil" (ask your physician)this is (with 25% oil) an acceptable mixture for running in your engine. Later, for a little much more performance you can add 5 to 10 % nitromethane...if you can find it somewhere.
4/07/2010
semen (67%)
And complete with this cursor there is a candle ? And still, what it is necessary to buy in addition to it?
   chapier61 (70%)
A candle ? A "glow plug" maybe...yes you must buy one in addition (choose an OS number 8 , it's a good one -amongst other- for this engine).
24/06/2010
matuska (58%)
is it good engine for hyperion .25 mustang ?
   rĂ©al bertrand (43%)
not tray yet
14/06/2010
amirzakwan (46%)
can i use this engine on my 600g foamie cessna??
   siwy (-322%)
t is possible ale it can be for large ,I apply to coach 2000g 1200 spread
   chapier61 (70%)
Too powerfull for a 600g plane I think, mine lift a 2,350 Kg, 35 dm2 trainer without problem with a Graupner 9x4" prop.
15/02/2010
kargo (63%)
Hey Gang, what spinner shaft size do I need with this engine?
   Eric1180 (-53%)
Just a nitro spinner any size or at least some thing smaller than 2.5 inch and bigger then 1 inch. Any over 2.5 is to big and 1 inch is kinda small so any thing in between
20/11/2009
nicohaas (29%)
Why don't hk sell the .40? We need it for (slow)q500
20/11/2009
nicohaas (29%)
Does anybody know howmany revs this engine (.21, 3,5 cc) makes with a apc 7*6?
   chapier61 (70%)
What for ? Can not be far from 15000 revs/minute with such a little prop and custom fuel.
11/08/2009
blueyee (45%)
what size of ASP engine that i need to run a trainer plane with 1600mm wingspan and 2300gram weight?
   ergocentric (92%)
.46 cubic inches would be good (.52 seems a bit big)
for a trainer I would recommend a large flat prop to keep the max speed down, maybe 12x4 inches
   blueyee (45%)
thanks for the info man!! i am considering between ASP .52 and OS .46AX since they both have similar output power.
   chapier61 (70%)
Sorry, ergocentric, I have a trainer 35 dm2 and 2,450 kgs which fly very well with an OS .20 FP (yes, bronze bearing and point twenty !) and a 9 x4 Graupner prop. If the OS can do it an ASP with twin ball bearing and a 2nd generation carburator can do it too much better: don't forget we speak of trainer that cannot be over motorized !
   Sergey (72%)
It will be good .40 .46 .52 for the trainer. Prop 11*7 11*6. Other combinations is not so good.
My first trainer flyes with .52 and 11*7 prop very good and not over powered.
You can try some base aerobatics with this combination. You will make you own deision when get some experience.
   ergocentric (92%)
Yes, chapier61, it will fly, but will it fly inverted?
This is a good size engine for beginning aerobatics as well.

Sergey: the reason for a large diameter, low pitch prop is to slow the trainer down yet allow plenty of power to get out of bad situations.
6/08/2009
Neto (73%)
what's spinner can i use?
   ergocentric (92%)
a two inch spinner would not be too large on a 1/12th scale combat warbird.

product 9150

really depends on your aircraft more than the engine.
7/06/2009
rsieminski (89%)
What rpm numbers are you getting with what prop? How does it compare to the new, blue headed .15?
   chapier61 (70%)
This engine is far from expensive : buy one ! ... and measure yourself, you 'll be positively asthonished.
19/05/2009
mwilhelm100 (65%)
Is this motor suitable for RC buggies ?
   Kapitan-Panika (56%)
this is aircraft engine. To use in car you need to modernise it
   rsieminski (89%)
You would not need to modernize it. It just wont work. The engines for cars are totally different. Car engines are designed to spin at a very high rpm, and to run on high nitro, and low oil. The porting is totally different. In comparison to a full size automobile, the RC car engine is stuck in 1st gear, and the RC airplane engine is in 2nd or 3rd. This is a great aero engine, just not good for cars. You have to buy one designed for cars.
28/04/2009
ishady (63%)
HELP to HC staff,
As the above inquery: will it work with regular OS glow plug A3 or A8 ?
   rcmodelreviews. (86%)
Yes, an OS#8 would be the best choice though.
25/04/2009
NJGeorgee (68%)
It says ask a question or discuss hings at the bottom, why all the hostility
25/04/2009
Turbobeaver (97%)
This is the A.S.P .21 engine.They also make .25 and .28 size engines as well.Check out just engines dot calm for more info.Do a search for A.S.P .21 to bring up the info for this one once your there.Don't find it listed like the rest for some reason.
24/04/2009
Eric1180 (-53%)
What is with these people asking question in the review section, come on dumb *$$'s. It is for REVIEWS ONLY!!!
   xoon1242 (67%)
I know im not making it any better... but just to let you know. UR NOT ANY BETTER THAN THE GUY who posted the question.
....................so am i.
This customer was awarded a credit for their answer.
24/04/2009
JelleB (84%)
Does anyone have an equivalent power rating (in Watts) for this motor? That would allow for objective comparison with other engines.
   Malfamartin (71%)
I "stole" this nice info from Turbobeaver, so please give him many points.
I think this is what you asked for JelleB!
Specifications

Type Displacement (cc) Bore (mm) Stroke (mm) Output (kw/rpm) Practical rpm Weight (g) Notes
12A 1.94 13.80 13.00 0.45/16.500 3,000-17,000 136
15A 2.45 15.50 13.00 0.50/19.500 3,000-17,000 165
21A 3.34 16.30 16.00 0.55/19.500 3,000-20,000 165
25A 4.04 17.40 17.00 0.65/18.500 2,000-18,000 256
28A 4.57 18.50 17.00 0.74/18.500 2,000-18,500 246
32A 5.22 19.00 18.40 0.86/17.500 2,000-18,000 330
36A 5.90 20.20 18.40 0.94/17.500 2,000-18,000 332
40A 6.46 20.66 19.28 1.14/16.500 2,000-17,500 412
46A 7.49 22.25 19.28 1.30/17.000 2,000-17,500 412
53A 8.49 23.68 19.28 1.46/17.500 2,000-18,000 420
61A 9.95 24.00 22.00 1.68/17.500 2,000-18,000 609
75A 12.40 26.30 22.00 1.80/17.000 2,000-17,500 614
91A 14.93 27.30 25.500 2.20/17.000 2,000-17,500 728
108A 17.22 28.50 27.00 2.40/17.000 2,000-17,500 733
120AR 19.96 30.68 27.00 2.70/9.500 2,000-9,600 940 Ringed
180AR 29.82 35.00 31.00 4.50/7.600 1,800-7,800 1528 Ringed
   Eric1180 (-53%)
Cool thanks man!!!
23/04/2009
Eric1180 (-53%)
Sweet i needed one of these at a HK price
   chapier61 (70%)
Well, buy it...do'nt delay, buy today !
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