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HelicopterAntiques or Out of Business › Hirobo (?) HGK .45 Engine
10-22-2009 02:37 AM  8 years agoPost 1
marcw

rrApprentice

Southern California

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It came with the Hirobo Falcon Mk1 I recently picked up. Ive never heard of this brand before and I cant find much about it on the internet. The busybee website calls it a "Hirobo HGK .45" and has one in their Falcon Mk1 as well. Was this engine made by Hirobo? Did it come with the Falcon Mk1? Anyone know anything about this engine?

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10-22-2009 11:47 AM  8 years agoPost 2
Arthur

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Wales. UK

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I still have one of these engines. I got it, as far as I recall in the mid or late 70's and had it in a Morley Bell 47. It is a ringless type and a b***d to start cos it had so much compression. I used to start it with the plug a slightly loose at tick over, then whip the plug lead off and tighten up the plug before it stopped [hopefully]. Needless to say I didn't use it for very long. I was given it to try, by a Ripmax rep. I think it came from Italy or Chzekoslovakia [cant spell it]. It is powerful if you can start it. I only have it cos I never throw any thing away. Arf

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10-23-2009 10:27 PM  8 years agoPost 3
marcw

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Southern California

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Hi Arthur:

I agree it's got TONS of compression. I set mine up in a test stand and got it to start up OK, but I just cant get it to run reliably. It probably needs a carb cleaning and rebuild. For the purposes of flying the Falcon Mk1, I think Ill feel a lot better just installing a modern .45 planker engine for better reliability...it doesnt sound like the HGK has any special historical association with the early Hirobo Falcon helis.

Marc

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10-25-2009 02:06 AM  8 years agoPost 4
Wozza_au

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Adelaide South Australia

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Hi
Where you running any nitro in the fuel? these old high compression engines where designed to be run with little or no nitro and still maintain some performance
I had a hell of a time getting a older Russian motor to run,until I ran it on an 80/20 mix and it ran quite well
Wozza

I see dead pixels

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10-26-2009 03:22 PM  8 years agoPost 5
marcw

rrApprentice

Southern California

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HGK .45

I only have Cool Power 30% so that's probably the issue then. OK, Ive decided just to throw in a new modern .45 into the Falcon, so the HGK is on eBay for sale now:

http://cgi.ebay.com/ws/eBayISAPI.dl...em=330371383232

This ought to make a vintage engine collector happy!

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10-26-2009 04:16 PM  8 years agoPost 6
Wozza_au

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Adelaide South Australia

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Now where is the fun in that
Ive just gone the other way and replaced a new .50 with an period .46
Now its how I remember it back in the late 70's.Walk out to the paddock and spend 1/2 the day trying to get the sucker started,when you did it flew for 30 sec and you would spend the remaining 1/2 of the day picking up the bits of balsa
Good luck with the sale
Wozza

I see dead pixels

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10-26-2009 06:57 PM  8 years agoPost 7
nivlek

rrProfessor

Norfolk England

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I remember HGK engines being around in the late seventies , I can't remember for sure if they were Czechoslovakian or Hungarian .

At the end of the day , it gets dark .

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11-15-2009 06:25 PM  8 years agoPost 8
Blackflys

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Castlegar, B.C. Canada

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I flew these motors in 40 size pattern planes way back in the early 80's. I still have one in running condition & agree that they had good compression & power. I used the Supertiger Blue Head 60carb which dropped right in to get a reliable idle & smooth transition on 5% nitro with a Macs tuned pipe/header. Exhaust port matched an OS 40FSR of the day but these motors really out performed the OS .
The original owners manual has the HGK company listed as HQ in Taiwan.

KR

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11-17-2009 09:38 PM  8 years agoPost 9
heli_headcase

rrKey Veteran

Hovering around Atlanta

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I now own Marc's HGK...

The original owners manual has the HGK company listed as HQ in Taiwan.
Any chance the manual is available for a scan and forward? Would be great to have some documentation available.


HHC

So many heli's - too little time...

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11-18-2009 05:22 PM  8 years agoPost 10
marcw

rrApprentice

Southern California

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Steve, you have way more patience than me bud! If anyone can get it running reliably, it will be you! Hope you can get the manual...at least for the carb. The rest of it is pretty straightforward. Shipping it out to you this afternoon. Good luck and please post back here when you have her up and running you your falcon mk1(?)

Marc

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11-20-2009 04:23 AM  8 years agoPost 11
heli_headcase

rrKey Veteran

Hovering around Atlanta

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Thanks Marc

If I do mount this HGK in the Falcon it will be intended for looks only. Don't think flying it makes much sense when there are 'better' engines available. Don't need a manual for the carb - can't be complicated, unlike some of the YS four-stroke carbs. I just like documentation as it gives more overall info and 'atmosphere' to the device.

I'll let you know when the engines show up. Thank you.

Hey, anyone else out there find that typing on the keyboard of an ASUS EeePC is a pain in the butt? It's so small!!!


HHC

So many heli's - too little time...

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12-07-2009 11:53 PM  8 years agoPost 12
Blackflys

rrNovice

Castlegar, B.C. Canada

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Slow Reply

Hey ...Sorry for not responding. Did not receive a notice on the thread,,,will have to check my preferences.
I have all my engines still boxed after moving. Off work for the month of Dec so I'll give a go at finding the manual & getting it to you.

Ken

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12-08-2009 12:21 AM  8 years agoPost 13
heli_headcase

rrKey Veteran

Hovering around Atlanta

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Thanks!

Hi Ken,

That would be wonderful, thank you.


HHC

So many heli's - too little time...

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HelicopterAntiques or Out of Business › Hirobo (?) HGK .45 Engine
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