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RE: NGH 17cc gasoline engine
Thank you for your advice, Sir, and Mr.earl had shown me Fox roller conrod, of cause, the conrod design is important point as considerations. NGH just focus on smaller size 2-stroke and 4-stroke gas engine, so we made many tests and researching on conrod, big size all with roller bearings on conrod, and NGH use roller from Japan, Along with the displacement of smaller and smaller, the tests show the smaller roller always broken easily compare the big size roller. always smaller roller will be broken easy than big size roller. 17 is with a classical .90 glow size, we can't find a suitable available smaller roller match it, if we enlarge crankcase size to fit a available roller, it will be same as a 25cc size. SuperTiger is a great glow engine and remade in US for BME90 with small roller, I am not sure if any available US made smaller roller match BME90, or BME make a custom roller in US. but it is difficult for me to make a custom roller from roller manufactory, because Chinese custom roller is not ok, need from Japan, but it is difficult. I am wonderring if someone have experience run the smaller roller for long time? Engine parts is always easy to damage, others make the conrod with crankshaft together with a body, if broken need replace both parts. BME and NGH is glow style, so the conrod is separated with crankshaft. users can replace it easily. because always crankshaft is stronger not easy to break. so 17 modified with a high strength whole grass conrod, use 20:1 is ok, with no need worries. and IMPORTANT is NGH will supply 100% service if you meet any engine problems.
Posted on: 8/13/2012 7:22 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11192393
RE: NGH 17cc gasoline engine
Sir, if the great classical Propeller fighter P-51's total weight is 9 pound, 17 can perform it. BME90 and NGH17 both made from a typical .90 glow engine size, I am not sure if this P-51 plane installed with a .90 glow engine before, if yes, BME90 and 17 can be matched easily. BME90 is unquestionable No.1 within this range. but 17 will be less lower power and RPM than .90 glow engine because of the gas fuel feature, nitro engine is always bigger power with same size as gas fuel. if you feel less hp with 17, can try NGH25 which made from a typical .120 glow engine size. both are with glow style muffler can be rotated with angles not welding muffler.
Posted on: 8/13/2012 1:56 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11191271
RE: NGH 35 CC Gas engine.
Earl, first ring is pressure ring, second ring is oil ring, they are with different shapes and functions. third groove idea is from glow engine piston store some oil and dirt while engine running. made a solution for supercharging and lubricating, there are two nipples on INTAKE MANIFOLD, and two nipples on Back cover. need be connected with pipeline. Two nipples on Intake-Manifold: one is no pass to intake-manifold but pass to Walbro carb, one connection from back cover, so the pressure from crankcase to carb via this nipple to supercharge. one nipple is pass to intake-manifold and connected from another nipple on back cover. So, when piston move from TDC to BDC, the pressure from crankcase boost to carb and manifold via two connections. when piston move from BDC to TDC, the negative pressure from crankcase will suck gas mixture to crankcase via the another nipple connection （not from carb connection nipple, one-way）, to lubricate the roller bearing, and there is a hole inside the crankshaft, the oil transferred into cam gear for lubrication via this hole. when engine running, the carb will pump twice for each cycle, one is effective pump, one is noneffective, and now make second noneffective pump to send oil to crankcase for lubrication via the seond nipple on manifold to second nipple on back cover. I am sorry it is hard to explain with my poor English.
Posted on: 7/19/2012 7:07 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11161871
RE: Why don't we have more 4 stroke gassers?
yes, professional, same designer.
Posted on: 7/18/2012 6:36 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11160548
RE: NGH 9cc
Jimmy, while piston move from TDC to BDC, fuel transferred via this hole, the fuel pressure make the floater up, and pressure on spring, and then rocker arm down. when piston move from BDC to TDC, floater down and close, and rocker arm up. floater control the fuel transition rate. So please push rocker arm, and see if spring can backspring when your finger leave from rocker arm, same level is not neccessary.
Posted on: 7/15/2012 12:36 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11155723
RE: NGH 35 CC Gas engine.
Earl, thank you so much for your professional advice, The next time, I will make more tests with different props, and flight tests and confirm al details before MP, I hope it will be in market from Sep.
Posted on: 7/14/2012 2:38 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11155250
RE: NGH 35 CC Gas engine.
NGH GF38cc 4-stroke gas engine pictures at: http://www.5irc.com/forum.php?mod=viewthread&tid=12097093&extra=page%3D1 videos at: http://u.youku.com/user_video/id_UMjc0NDkxODA0.html
Posted on: 7/14/2012 1:57 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11154641
RE: NGH GT70Twin new when?
Tim, yes you are right, the weight is not just from liner, and other parts add up. GT35 is heavy, so T70 is heavy, at about 2.1kg, it is with a "bowl"-style mounting. and someone like the stock-muffler with slant-pipe, and the welding-muffler with vertical-pipe is ok too. I think I am not good on controlling the engine weight, focuced on strong parts. but I am doing best to control the weight of NGH's first 38cc 4-stroke within 1.4kg, it will bes tested next week and can get the data. thanks!
Posted on: 7/12/2012 5:57 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11152372
RE: NGH 35 CC Gas engine.
http://u.youku.com/user_video/id_UMjc0NDkxODA0.html
Posted on: 7/10/2012 6:10 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11150680
RE: NGH 9cc
Mr. Jimmy, Please visit my video house how to run it. http://u.youku.com/user_show/uid_michaelchow2099 and Please visit GT9 thread : http://www.rcgroups.com/forums/showthread.php?t=1555659, more details in. michael
Posted on: 7/8/2012 5:44 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11147977
RE: NGH 17cc gasoline engine
Thank you so much, Sir, it is really useful and it is a steady structure, and with no need fasten rod and crankshaft together. BME is great based on Great SUPERTIGER.
Posted on: 6/23/2012 6:29 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11128651
RE: NGH 17cc gasoline engine
Thank you very much, Jimmy, and sorry for J15G meantime, J15G is a first Glow-style gas engine from the main glow-designer, there are two hidden troubles on J15G as original, one is the unsuitable carb size to get some problems on middle, WT664A venturi is a little bit bigger. ome is on Rod which need so carefull on the mixture rate and engine-overheat. there is no so small steady roller bearings on so small engine size because designer make an original with classical .90 glow size not amplify it reach .120 size for bigger roller bearings, but GT25B use roller. Generally, the after-sell responsibility must be supplied by company not a person, but I am so sorry for users get no good support after I left. so I accept the criticizes and sorry again. So GT17 changes with a suited WT1022 which is remade from Walbro for just NGH company with a small venturi for GT17 is a still classical size from .90, and make more precisions on all parts to make the engine with no overheat to break rod with a correct mixture rate for a compact engine get enough power, and now we can make an option on GT17B with a new more higher-strength rod. nothing is perfect, we will meet new problems, but the most important is wherever you buy engines from, you will can accept good service from dealers and contact me directly. sorry agains and thank you agains. and GF38cc 4-stroke gas engine will be tested in July, we will share it.
Posted on: 6/23/2012 1:54 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11128544
RE: NGH GT25
http://v.youku.com/v_show/id_XNDEyNDAzNDQ4.htm
Posted on: 6/12/2012 6:20 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11116231
RE: Help to JBA 91 AR
Always can use OS 3# or 8#, can try to find the different with the two type plug, in factory, testers use 4:1 with carbinol + Castor oil, do not add nitro, if want to use nitro, always not exceed 15%
Posted on: 6/7/2012 6:16 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11110627
RE: NGH 9cc Engine input???
Sir, high tempreture might damage the diaphragm if pressure from muffler.
Posted on: 5/25/2012 5:05 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11094773
RE: NGH GT70Twin new when?
thanks for your support, Sir, I am sorry that I can't confirm the delivery time until now, I need solve some problems before releasing. yes 70 will be matched with two polished muffler. and 70 still use sleeves and will be heavy. all other size use sleeve, and crankshaft inlet structure, so the crankshaft is heavy and accumulated weight is heavy. I am sorry that I insist the continuing way with glow engine.
Posted on: 5/11/2012 8:11 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11077615
RE: 4-cycle petrol engines
Sir, it is a design drawing with 38cc, but someone modified it as 88cc, I don't why this happened. it is just in manufacture, can't confirm the show time.
Posted on: 4/19/2012 4:28 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11048247
RE: NGH 35 CC Gas engine.
Sir, NGH is a glow-style gas engine with front-carb, so please notice pipeline installation Avoiding high temperature area of the engine like cylinder-head and exhaust and crankcase etc..
Posted on: 4/9/2012 6:16 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11034239
RE: NGH GT 35 Gas Engine..anybody got one??
Sir, NGH is a glow-style gas engine with front-carb, so please notice pipeline installation Avoiding high temperature area of the engine like cylinder-head and exhaust and crankcase etc..
Posted on: 4/9/2012 6:13 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11034234
RE: NGH 9cc
http://www.youtube.com/watch?v=Y2XTjW-ENz8&feature=player_embedded
Posted on: 3/12/2012 5:39 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10997654
RE: NGH 9cc
same
Posted on: 3/9/2012 5:32 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10993515
RE: NGH 9cc
many years ago, Chinese glow engine manufactories copied OS glow engine as a criterion and retained till now, so all Chinese glow engine is same dimension as OS include the installations and muffler connection dimensions....etc. 40 series is a classical size all these years, manufactories always make three size on the same crankcase but different liner for different displacement. the three size is .40, .46, .52, later, nobody use .40 because almost same dimension and weight, but 40 is less HP, so they prefer .46 and .52, later manufactories want to make bigger on this size, they increased the cylinder bore to get the .56 displacement on the same crankcase of .52. so .56 appearred years ago. GT9 is based on a .56 glow engine size, but the different output on Nitro and petrol on same displacement, caused on the dfferent fuel speciality. so usually 9cc is less output than .56 size glow. NGH fuel-delivery-system solved the problem for fuel-transition just, it is with pump and regulator for petrol not for nitro, you can try other carb with this system is ok.others details are all same.
Posted on: 3/8/2012 5:39 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10992139
RE: NGH 35 CC Gas engine.
<span style="FONT-FAMILY: "Times New Roman","serif"; FONT-SIZE: 12pt">http://s1207.photobucket.com/albums/bb472/Wolly22/?action=view¤t=StinsonReliantLQ.mp4
Posted on: 3/1/2012 10:39 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10983670
RE: NGH 9cc
will be shown in March
Posted on: 2/28/2012 5:55 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10980712
RE: NGH 9cc
http://www.youtube.com/watch?v=CWdTA3th0k0&feature=results_video&lr=1&ob=0
Posted on: 2/28/2012 12:07 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10979537
RE: NGH 9cc
http://www.5irc.com/forum.php?mod=viewthread&tid=12087387&extra=page%3D1 please visit the video to check how to install and adjust it.
Posted on: 2/23/2012 7:01 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10973114
RE: NGH 35 CC Gas engine.
<span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">Thank you all! Let me explain and introduce NGH GT35 engine as details below, it is useful for you to know GT35 structure and use it. Special design on GT35 and it is unique. 1. Glow style vision: (with all NGH size) a) same dimension as classical .180 glow engine size with beam-mounting, you can easy to replace GT35 on your airframe, also the extra rear-standoff for your preference for installation. b) Sleeve made by special wear-resisting material with long life (with all NGH size), this material is with special ring material and will work together for long life. c) Sleeve with high precision (with all NGH size): strictly control for tolerance within 0.003mm, usually made by plated just be 0.025mm in China, this tolerance is very important data on an engine, high precision can keep the high RPM for long time, because when the engine is with break-in and run for any time, at the beginning always engines are with high RPM and powerful, but this situation can’t be last long time, because the engine running has a wastage on the tolerance, this is why always we use a new gas engine with high RPM and powerful at beginning, but it is less power when it works for a short time.<span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: #010158"> <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: #010158"> <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">d) Intake from crankshaft with front carb: let the engine is more compact. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">E) Always use glow-type Muffler: with less noise than Polished-muffler, but maybe some leak same as glow engine, and some can be rotated with 180 degrees. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">F) almost all parts are separated as same as glow engine, we can easy to assemble it and disassemble it, and no need to make the crankshaft with rod as a part, use a Roller-bearings Conrod made by <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: windowtext; FONT-SIZE: 9pt; TEXT-DECORATION: none; text-underline: none">aluminium<span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt"> <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: windowtext; FONT-SIZE: 9pt; TEXT-DECORATION: none; text-underline: none">alloy<span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt"> <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">2. Special converting structure: <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt"> <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">GT35 is with three parts separated, cylinder-head, cylinder-block, crankcase, each GT35 has an extra piston inside the box for converting to side-exhaust or rear-exhaust, we can convert it home, just rotate the cylinder-head and block and liner with 90 degrees together, and replace the extra piston assembly, it is from side-exhaust to rear or from rear to side. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt"> <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">As a real engine manufactory, always we need get some steps; <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; FONT-SIZE: 9pt">The first is size-selection: we always got suggestions from market and dealers and model friends and many people even we do not know each other, because many good suggestions had been considered to match the design. We did our best to match all into one size-selection. And then we make it. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: #434343; FONT-SIZE: 9pt">Process of manufacture: always we met problems, and we keep the discussing with many people to solve it with no secrets. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: #434343; FONT-SIZE: 9pt">Process of test: each new always be tested by many professional experts and my flyers, modify….. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: #434343; FONT-SIZE: 9pt">Share the fruit: let us see and use it which made by all professional advice from yours all. <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: #434343; FONT-SIZE: 9pt"> <span lang="EN-US" style="FONT-FAMILY: "Arial","sans-serif"; COLOR: #434343; FONT-SIZE: 9pt">All helps to me to make some different products not just copy and to be a clone. Really thanks!
Posted on: 2/15/2012 5:19 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10960850
RE: NGH 9cc
http://www.youtube.com/watch?feature=player_embedded&v=TL2h79ANhcE
Posted on: 2/15/2012 3:34 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10960682
RE: NGH 35 CC Gas engine.
Sir. I think you bought a GT35 which is with side-exhaust, the converting is easy, please try to do carefully. 1. research the GT35 with the manual and explorded views. 2. disassemble your GT35, remember the situations of some parts which need to change. 3. take the Ring installed on the extra Rear-pinston, and inside the cyliner-liner 4. rotate the cylinder-head and cylinder-liner with 90 degrees. 5. reassemble it. it is GT35R with rear-exhaust. 6. please do it carfully and think it with all parts are correct situations. NGH gas engine is with classical glow engine style, each size is with sleeve inside for long time works, so All NGH gas engine is any more heavy than others which many by plated-head gas engine. Flyers will use NGH gas engine well if he has experience with glow engine ever. You can use same rate for fuel and oil mixture with 30:1 or 35:1. no problem. I suggest you fly your GT35 first and later you can try to convert it to GT35R. thank you sir. michael
Posted on: 2/9/2012 6:38 PM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10952080
RE: NGH 9cc
Sir, GT9 = One .56 size glow engine + CDI + fule-delivery-system, engine weight 425g, CDI weight 120g, Fule-delivery-system weight: 45g, total weight almost 590g
Posted on: 1/26/2012 4:04 AM by Author "michaelchow"
in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10928396
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