G-Mark 061

I would PX a Norvel 049 against it!

cribbs74 wrote:If you don't run it, then someone else will when your pushing up daisies John. Or...... It will get tossed in a dumpster. Why cheat yourself?

Toss it on the Old Timer and let er rip!

I do know that parts are hard to find for it though.

Think of it this way nobody can measure piston to sleeve clearance with the naked eye. Run it until it won't run no more. Tear it down and then clean it up and stick it back in the display box.

The Voice of Reason Ron thanks


Only thing is I'm looking at the nuts money those boxed 010's in Johnnies basement seem to
be fetching lately.........

ian1954 wrote:I would PX a Norvel 049 against it!

Thanx for the offer Ian
I think the Norvel's have been breeding in the basement though.

I have one GMark 060, like yours. Very good engine, the idle is good. I ran it on low nitro fuel (about 5 to 10 %), with a Rossi 1 glow (short plug).
Fix it on a test stand and make your own advice

John Goddard wrote:

ian1954 wrote:I would PX a Norvel 049 against it!

Thanx for the offer Ian
I think the Norvel's have been breeding in the basement though.

I have a rather different problem with G-MARK engines. I don't have a basement but have found that if you fit a nice wooden TopFlite propeller and place them in a nice warm but dark drawer - they mutate!



The longer you leave one - the worse it gets!

ian1954 wrote:

John Goddard wrote:

ian1954 wrote:I would PX a Norvel 049 against it!

Thanx for the offer Ian
I think the Norvel's have been breeding in the basement though.

I have a rather different problem with G-MARK engines. I don't have a basement but have found that if you fit a nice wooden TopFlite propeller and place them in a nice warm but dark drawer - they mutate!



The longer you leave one - the worse it gets!

I've been after a 12 for ever Ian
and Old Full Throttle Phil has a couple of those 30's in boxes which I'm always fondelling when I
go over his......
I've got a very attractive Mrs who I'd happily swap for both or....
OK which one do you want to swap her for....?

If you're wondering she looks like Helena Bonham Carter
probably cos they're 2nd cousins 29times removed or something like that.

John - I am sending you an email!

ian1954 wrote:John - I am sending you an email!

I am not PC and my answer probably not suitable for this site

ian1954 wrote:

ian1954 wrote:John - I am sending you an email!

I am not PC and my answer probably not suitable for this site

Well I can't resist - you mean she could look like this



or this?

The regular plug is a bit of a power robber on these engines. They need a long reach plug and will do about 15000rpm on a 6x3 prop. So compared to a Norvel .061 there is no contest...

I got my first G-mark 061 r/c 24 years ago to replace my COX 074 QueenBee ( aka the COx slug engine) because the 074 wouldn`t pull my ACE Alpha through the air. It seema that a heavily burdened epoxy laden Ace Alpha with standard 3ch (early 1980`s)radio equipment was too much weight for the immensely overweight COX 074QueenBee engine.
That same G-mark .061 is currently in an ACE Wizzard ready to be flown again when I feel like fying a plane that huge once again,yes they last that long.
No,it doesn`t perform like a COX TeeDee or a Norvel,but I`m pretty sure the G-mark will outlast either 1 , I bought G-mark`s just for spare parts.
Yes, the G-mark outweighs both the COX TEEDEE and the Norvel I would say.
I use the merlin flatcoil plugs in mine to boost the performance a litttle until I get into converting the head to accept a merlin flatcoil turbo style plug or a flatcoil globee style plug,then she will be a bit more formidable.
Yes this does work, I had a guy ( Bob@flyfreeflight)work up a head for my G-mark .03 r/c like this and he squeezed out 1600 extra rpm

No, sadly my G-mark .061`s wont mutate into multi cylinder engines no matter how much I wish upon a star,I wish my .03`s would too

ian1954 wrote:

ian1954 wrote:

ian1954 wrote:John - I am sending you an email!

I am not PC and my answer probably not suitable for this site

Well I can't resist - you mean she could look like this

I always wondered why a posh bird would monkey
Around with me Ian.
Put a curly wig on that and tis Senior Management

Busted!!!

I've cut and pasted that remark in a draft to be sent at a later date.

Man
All this blackmail ammo I keep giving
You lot.

john
im with ron on this topic...
... if you arent going to run it, take a picture, hang it on the wall, and send the motor to someone that will!

ian
any more pics of the multis?

cheers
a

Cor you lot are harsh....


I think it's only Kim on here runs more of his motas than I do.

ado1974 wrote:john
im with ron on this topic...
... if you arent going to run it, take a picture, hang it on the wall, and send the motor to someone that will!

ian
any more pics of the multis?

cheers
a

John,

Would you like any framed so that you can dream about them?

ian1954 wrote:
Would you like any framed so that you can dream about them?

thanks ian

John Goddard wrote:Cor you lot are harsh....


I think it's only Kim on here runs more of his motas than I do.

But I do keep a nice stock of runners and try to keep up on my running of engines for the fun of it as well as the flyers lol

Yeah but you've kinda been on the missing
List for a while J

Incidentally have you heard from Indra?
I think the aliens have kidnapped him.

Unfortunately I was on the missing internet connetion lisst

I havn`t heard from Indra either, I hope he is alright

I`d bet Bob@flyfreeflight.com could really jazz up the G-mark.061 with a head coversion for like a globee style flatcoil plug,he was getting 29k out of COX teedee020`s,says about 30k is the hand grenade mark for them if my memry serves me correctly.

I havn`t gotten around to doing a head conversion one of my G-mark 061`s yet.
The G-marks take a long break in period, my first 061 is still running strong after 24 years and my first 030 is still not completely peaked out yet