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5.5HP 53cc Twin Cylinder Gas Engine

5.5HP 53cc Twin Cylinder Gas Engine

The new 53cc twin boxer engine has two horizontally opposed 26.5cc cylinders providing 5.5hp of low vibration power.
The two cylinders dynamically balance the engine, making it a smoother running and more reliable idling engine than a single bore motor of the same size. Having double the spark this engine not only idles better, it also has quicker throttle response and a much nicer exhaust note!

Take note of the CNC machined crankcase and finely cast cylinder head, this is a quality motor!

Features:
• CDI Electronic ignition with auto advance
• Walbro membrane pump carburettor with manual choke
• Automatic advancing electronic ignition
• Dynamically balanced
• CNC machined crankcase
• Finely cast cylinder heads

Specs:
Performance: 5.5hp
Bore/Stroke: 34x29mm
Weight: 1477g
RPM: 1,900~9000rpm
Spark Plug: CM-6
Suggested Props: 22x8~22x10
Fuel: 2 stroke oil/fuel mix (25:1 break-in 40:1 general use)
 
For more power use unleaded fuel with an octane rating of 93 or higher.
Never power the CDI with more than 6v. Doing so will break the CDI module. Take note of your battery packs true voltage when fully charged.


PRODUCT ID: 53-STS


Weight: 1790g
Quantity: 
International Warehouse
stock
10+
Price  HKD2,902.01

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Further discounts available for registered & logged-in customers.
 Customer rated
441
crowns
  
 
Total of 68 discussions.
THE BLACKBIRD  1 points - 10/12/2014
 
Hi just looking at this engine to put in my Bucker Jungmiester could some one give me the dimentions of it please, as in front to back and overall width the cowl on the bucker is 220mm wide and I have 170mm from the cowl front to the fire wall It looks to be a great engine and I want to get one before the stock runs out If it fits Thanks Tony
edgar  4 points - 9/2/2014
 
please post fuel comsumtion i want to know fuel tank capacity
franzi  243 points - 8/28/2014
 
Too bad that HK does not have good exhaust system for this engine. That would be the ideal engine for my purposes. Franzi
Todd  11 points - 7/21/2014
 
Seriously one of my best engines. Huge power, very responsive throttle, very low vibration and easy to start. Amazing Engine for the price. I fly it in a 50 size Extra 3003 and it hovers at around 50% throttle on a Biella 22X8 Carbon which acts a nice break on idle in a dive. Thank you very much Hobby King, I highly recommend this engine!!!!
TeamSF  50 points - 7/18/2014
 
why the difference in weight between US and International Warehouses? Are they different engines? Or just more profit from shipping? Come on HobbyKing...stop playing games. I'm loyal customer, but this dirty tact...has me strongly considering OctopusRC.
 Glyn R 91 points
In UK it is even worse due to the Sales taxes. Still cheaper than any similar engine.
Customer Reviews
Overall Rating
hadirabie
110 likes
ValueUNRATED
QualityUNRATED
6 thumbs up!
a friend of mine has just bought this,...the sound of it is just amazingly sweet..huge HP .. and sucks a load amount of fuel..
5 stars for the price and hp.


11 comments. Reply..

Overall Rating
nsxfun
12 likes
ValueUNRATED
QualityUNRATED
2 thumbs up!
UMS Seidel 9-90 arrived today, and was disappointed that it did not have the nice presentation box the 7-70 had. Perhaps not much of a surprise, given stories of broken boxes in shipment. Now it's just a plain cardboard box, with some polyolefin foam sheet, pour-in foam at the corners, a big honking polyethylene rod over the crank end, and a bit of shrink-wrap around the cylinders. Very good protection, lousy presenta


11 comments. Reply..

Overall Rating
minasi52
14 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
Works today, 11/20/2010, CAUGHT AFTER 4 HITS, THE FANTASTIC RUN, RUN A LOT OF STRENGTH AND PERFECT, WILL PUT IN SBACH NEW 342 CC 50. THANKS HOBBY KING.


1 comment. Reply..

Overall Rating
tonioaltea
376 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
qualcuno ha detto che i carburatori laterali sono difettosi nell'aspirazione, probabilmente non s che nei motori areonautici si mettono i deflettori per convogliare l'aria nel modo corretto, provate e vedrete che non avrete nessun problema, anzi avrete un maggior raffreddamento, per aiutarvi sappiate che i fori d'ingresso devono essere pi piccoli come area di quelli d'uscita se volete un buon scambio termico.Naca aperta scambio pessimo


No comments. Reply..

Overall Rating
Ferenc Benis
20 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
We were a bit affraid of starting it at first. We check every nuts and bolts on it. Did a small modification on the spark pipes to make them a bit tight on spark plugs. In order to give it a sure ground. Used 1:20 (95 octane) mixture , 4*1.2 NiMH battery and a 20*10 Turnigy Cherry Wood Prop.
Made 5-6 turn choke and with a bit of an excitement give it a try. One pull on prop with hand and it started singing. Wonderful Engine! Very recommended!


3 comments. Reply..

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