NGH 38CC 4 stroke
#1428
Join Date: May 2006
Location: North Port,
FL
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I sold my motor and I have lots of parts let me know if you want to buy them.
Have new in package asp 180 muffler too.
http://www.rcuniverse.com/market/ite...itemID=1070898
Have new in package asp 180 muffler too.
http://www.rcuniverse.com/market/ite...itemID=1070898
Last edited by shorte; 05-03-2016 at 03:13 PM.
#1429
Join Date: Feb 2013
Location: BlenheimMarlborough, NEW ZEALAND
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So... I have had my "re-conned" engine flying on the Blackhorse Fieseler Storch. It flies well, the engine suits this model, as mentioned by Tyor, but there is quite a bit of cowl trimming to do!!
What I can say, without fear of contradiction, is that it doesn't run well if 3 out of the 4 mount bolts vibrate loose!!! I was so lucky not to lose this model!!! Well, I take full responsibility for the loosening. I normally locktite the hell out of these and it appears I may have missed that step!! So.... copius quantities of locktite on the mount bolts, and shake-proof washers, and constant monitoring and I think we'll be o.k!!
What I can say, without fear of contradiction, is that it doesn't run well if 3 out of the 4 mount bolts vibrate loose!!! I was so lucky not to lose this model!!! Well, I take full responsibility for the loosening. I normally locktite the hell out of these and it appears I may have missed that step!! So.... copius quantities of locktite on the mount bolts, and shake-proof washers, and constant monitoring and I think we'll be o.k!!
#1432
Join Date: Sep 2007
Location: , SLOVENIA
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#1433
Join Date: Sep 2011
Location: Doylestown, PA
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Boboeing, look here:
http://www.rcuniverse.com/forum/gas-...stroke-52.html
http://www.rcuniverse.com/forum/gas-...stroke-52.html
#1434
Join Date: Feb 2013
Location: BlenheimMarlborough, NEW ZEALAND
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Just a bit of an update on the 38 fitted to the Blackhorse Storch. Have had a hell of a time getting the engine mount bolts to stay tight. I believe the firewall is not built of very good quality ply and is compressing . Also, it seems that, even with locktite on the threads the bolts going into the stand-offs will loosen under the vibration.
So, I have epoxied an aluminium plate onto the back of the firewall, used large fender washers to spread the load of the tightened bolts on both sides of the firewall, and I bored the holes right through the stand-offs so that I can fit a bolt all the way through from front to back and put a nyloc lock-nut on to secure it. I have flown it since and these changes seem to have cured the problem.
This engine is a shaker. The short socket-head screws that thread into the stand-offs might not be good enough even with locktite. Boring through the stand-off and fitting a socket-head screw all the way through with a lock-nut at the rear might be required!!!
So, I have epoxied an aluminium plate onto the back of the firewall, used large fender washers to spread the load of the tightened bolts on both sides of the firewall, and I bored the holes right through the stand-offs so that I can fit a bolt all the way through from front to back and put a nyloc lock-nut on to secure it. I have flown it since and these changes seem to have cured the problem.
This engine is a shaker. The short socket-head screws that thread into the stand-offs might not be good enough even with locktite. Boring through the stand-off and fitting a socket-head screw all the way through with a lock-nut at the rear might be required!!!
#1435
Join Date: Sep 2011
Location: Doylestown, PA
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Just a bit of an update on the 38 fitted to the Blackhorse Storch. Have had a hell of a time getting the engine mount bolts to stay tight. I believe the firewall is not built of very good quality ply and is compressing . Also, it seems that, even with locktite on the threads the bolts going into the stand-offs will loosen under the vibration.
So, I have epoxied an aluminium plate onto the back of the firewall, used large fender washers to spread the load of the tightened bolts on both sides of the firewall, and I bored the holes right through the stand-offs so that I can fit a bolt all the way through from front to back and put a nyloc lock-nut on to secure it. I have flown it since and these changes seem to have cured the problem.
This engine is a shaker. The short socket-head screws that thread into the stand-offs might not be good enough even with locktite. Boring through the stand-off and fitting a socket-head screw all the way through with a lock-nut at the rear might be required!!!
So, I have epoxied an aluminium plate onto the back of the firewall, used large fender washers to spread the load of the tightened bolts on both sides of the firewall, and I bored the holes right through the stand-offs so that I can fit a bolt all the way through from front to back and put a nyloc lock-nut on to secure it. I have flown it since and these changes seem to have cured the problem.
This engine is a shaker. The short socket-head screws that thread into the stand-offs might not be good enough even with locktite. Boring through the stand-off and fitting a socket-head screw all the way through with a lock-nut at the rear might be required!!!
#1436
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So, I have epoxied an aluminium plate onto the back of the firewall, used large fender washers to spread the load of the tightened bolts on both sides of the firewall, and I bored the holes right through the stand-offs so that I can fit a bolt all the way through from front to back and put a nyloc lock-nut on to secure it. I have flown it since and these changes seem to have cured the problem.
#1437
Question, why do folks buy the NHG 38 with all the problems they seem to have? It must be the low price of a engine that sounds good...thinking all the probems can be easy to fix? ? Go fiuure !
#1439
Join Date: Feb 2013
Location: BlenheimMarlborough, NEW ZEALAND
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Hi Tyor,
did you ever have problems keeping your engine mount bolts tight on the Storch? I seem to have sorted it now, but had to make some changes. Storch is a very docile flier ehhhh?
did you ever have problems keeping your engine mount bolts tight on the Storch? I seem to have sorted it now, but had to make some changes. Storch is a very docile flier ehhhh?
#1440
I had to retight them once, because of the soft firewall. Then I use big washers on both sides and lock tight.
on my ESM Val. I use a nylon engine mount, the one that came with the kit. it takes a lot of the vibration.
The storch is a fun plane to fly, Do you put cg where it stands in tha manual? that is very nose heavy.
on my ESM Val. I use a nylon engine mount, the one that came with the kit. it takes a lot of the vibration.
The storch is a fun plane to fly, Do you put cg where it stands in tha manual? that is very nose heavy.
#1441
Join Date: Feb 2013
Location: BlenheimMarlborough, NEW ZEALAND
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Yes, I have the cg fairly much as recommended. When I feel more comfortable with the model I could look at moving it back I guess. Have also struggled with the landing gear a bit. The LH strut, the lower part has fallen out so that the wheel and lower portion of the strut are on the ground. Lucky it didn't happen in the air!!! The small screw which slides in the slot of the upper portion of the strut had vibrated loose. You can not access this screw to tighten because it is inside the strut fairing. I had to pull the strut fairing apart to access the screw. This is not easy to do without causing damage!! I have now Loctited the screw in. I hope it stays in, I don't want to do a one wheel landing with this!!!!
#1442
same thing with my landinggear. I lost one wheel in the air and landed on one wheel one time. that was not to bad. You can hold it on one wheel with the aileron almost to it stop. only broke the prop I was alone that day som had the camera on a stand.
https://www.youtube.com/watch?v=5T1nkZGnmRg
https://www.youtube.com/watch?v=5T1nkZGnmRg
#1443
I have made a mod on my landinggear from a old svenson kit.
https://www.youtube.com/watch?v=CFOzZPD_ZxM
https://www.youtube.com/watch?v=CFOzZPD_ZxM
#1444
Join Date: Feb 2013
Location: BlenheimMarlborough, NEW ZEALAND
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Hahhah!! Well done landing with one wheel!! I will avoid it if I can!!
Your replacement landing gear looks really good. Very scale and I bet it works well!!
Your replacement landing gear looks really good. Very scale and I bet it works well!!
#1445
Join Date: Sep 2011
Location: Doylestown, PA
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Would this NGH 38 CC engine be powerful enough for an 81 inch Spitfire with an all up weight of 18 pounds ? I've seen it on an ESM VAL with an 81 inch wing span but have no idea how much that model weighs.
#1447
Join Date: Sep 2011
Location: Doylestown, PA
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I noticed that the needles are at such an angle at the back of the carburetor that it may be hard to make adjustments once mounted on an air frame. Have there been any issues or concerns there?
#1448
Join Date: Nov 2014
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Prop Throwing
Have my un-flown GF-38 now installed in my Flair Tiger Moth and an initial ground run performed just to prove the throttle and fuel connections. However the engine continues to occasionally stop causing what I think is called a hydraulic lock, which in turn results in the prop coming lose. Is that a sign that the timing is not correct?
On the positive side the home made exhaust is a great success making the engine a lot quieter.
On the positive side the home made exhaust is a great success making the engine a lot quieter.
#1449
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Join Date: Jan 2002
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When i had that happen on my yS120's and OS 120 Four cycles the engine was too lean and pinging or preignition.
once enriched them a bit the issue went away, Did not take much either
maybe that's your issue?
Bill S.
once enriched them a bit the issue went away, Did not take much either
maybe that's your issue?
Bill S.