I forgot to say that they are Enya engines.

Thanks Dave, looks like the 6002 will be staying on the shelf. I have two 6001's, one with the venturi built into the front housing and the other one with a standard bolt through setup. You can see the difference in the front housing on both engines. Ed.

Disregarding the early Baldy, which was also a model 6001, the later 6001 BB had 2 (minor) varieties. Originally they used two rings but in about '71 they changed to a single ring which copied the just released Enya 60-IIIB. I used an early twin ringed 45 but after an estimated 200 hours of use it was no longer giving one flick starts although once running it was still exactly as normal but I fitted new rings and then back to one flick starts again. At one point the current Australian champ asked me how I got my Enya to run like his ST 46 but I had no answer. All I did was fill with 75/25 all castor, flick and fly .
Then along came the model 6002 so I figured an upgrade was in order. The proper name is Enya 45-II. I fitted it into my usual model but after quite a few flights I wasn't happy with how it ran so I went back to the 6001. It's difficult to figure out why it was disappointing in flight because crankshaft timings were identical to the 6001 (37/50) but port timings were a bit higher in the 6002. Weirdly though the crankshafts are different because the 6001 has a stroke of 19.2mm while the 6002 is exactly 19mm so with the exact same bore (22.3mm) they have different capacities (7.5cc to 7.42cc).

It's been a few years....
But the article I had read stated the Enya 6001 series had the same timing as the ST 46 G21 series.
Wishing you & yours a Happy Thanksgiving &"Tight Lines!"
Wes

Yeah this seems different- sometimes different works.   My son in law Kevin actually has our most recent experiences running the 6001s quite a bit and has found the Xoar 11-5 works about right for his  Sukhoi profile airplane which is pretty light.  Might need to increase pitch on heavier airplanes but I’d be hesitant to increase diameter.  That just makes the engine run hotter.  Most all our Enyas of various size don’t care for too much nitro.  5/25 all castor seems to keep things controlled.   I’m even mixing 2 1/2% and liking that on Enya and Merco engines .   When I go more nitro I can get wild power bursts and critical needle settings.   The first inclination would be to use a smaller venturi or head shims.   The correction actually becomes cutting the nitro way back.  These engines are made and used in places where nitro isn’t allowed or too expensive so are built to run without it.  You may need to find good hot plugs.   Even without nitro they produce good power.   The main struggle I think people have with Enyas is the assume it is broken in when in fact it isn’t.   Two or three hours  - half of which is in the airplane in the air is about the minimum to get most of them consistent and powerful.   BTW it seems to me Kevin is launching at around 9200 with the 11-5.  The sweet prop for the Tigre .46 in my mind is a RevUp 11 1/2- 6EW.  Strangely I don’t recall ever trying that on the 6001.  Maybe I will at some point.  Right now I don’t even have an airplane set up to fly with either engine.  I have one of my original Music kits here that I might build for N30………



Dave

got a lapped piston 6001 45 . Must be a early finned one . From a Orange Spacehound in N. Z. .
Think it was old in the early 70s , if I saw it then . Clear / rectangular Ex. port outlet . No baffle screw lump .

Anyone know anything of these .

It looks like this discussion was covered here on Stunthanger about a year ago:

https://stunthanger.com/smf/open-forum/enya-45-differences-64091/

I should use the search function more often.. Lot's of good stuff here on this site..

Wow.. Covered here ten years ago also:

https://stunthanger.com/smf/engine-set-up-tips/enya-45s/
https://stunthanger.com/smf/engine-set-up-tips/enya-differences-for-stunt-45-50-size/
https://stunthanger.com/smf/engine-set-up-tips/enya-45-bb-(-6001-)-props-rpm/
and
https://stunthanger.com/smf/engine-set-up-tips/enya-45-6002/

     When it comes to most of this stuff, nothing has really changed much, and since this site had been around , like almost 20 years??? There is very little to nothing that hasn't been covered multiple times. I find that most search functions are very particular in how you word your search and if you don't get the results you want at first, reword you search and try again. Volumes and volumes of information here, and when Stuka Stunt was still around, there wasn't ANYTHING that you couldn't find an answer for. Stuka was around for quite a while before Stunthanger, and so much has been lost from sources that haven't been with us for a long time.  But topics tend to get repeated and repeated often, so I think a very high percentage of anything you might want to know is here somewhere!
    Type at you later,
    Dan McEntee

I used to sleeve the crank tunnel down with an aluminium insert.

I also reduced the bypass port in the case in a similar way to the Fox 35.

No timing changes.

It worked a treat.

    Was this for the 6002?? My nexttrip up into the attic I need to see what I have in my stash up there. I was gifted a nice running Enya .45 but not sure which model it is. I think I have some other R/C versions also. I just never had the notion to try them.

    Type at you later,
     Dan McEntee