Evolution 26GT2...Good bye you JUNK.
09-24-2008 | 01:02 PM
#76
Senior Member
RE: Evolution 26GT2...Good bye you JUNK.
ORIGINAL: 540horses
who said it has 11hp if you cant believe it then dont-who cares. i had a gms 120 with a pitts that turned the same prop 16,000. it must have 10 hp right. my post is for intelligent people. as far as snip -do you know how to modify engines,or just look down on those who do.
ORIGINAL: pe reivers
Hmmm...
11 hp at 16400 from a 26cc engine (thats 420 horses per liter) still looks like a standard typical airplane engine to me, allowable on all airfields, albeit a bit expensive when done.
ORIGINAL: 540horses
ok lets talk 26cc power. take zenoah g26pum case and add 12mm wide bearing to the front where the seal was on the marine motors which use only one bearing in front. its the same case for the plane motors which use 2-8mm bearings. machine hub 4 mm for 12mm bearing clearance and extra support. zenoah chung yang full circle stuffed crank for 26cc boats. red coil with fulley hand ported 26puh heli cylinder on .012 copper base gasket. zero drag seal in rear and boost bottle for cars. g26 marine piston with .8mm ring. walbro ported 257 carb. the outward appearance of the motor is stock except for the coil. the last on took 19hrs of sanding, grinding ,polishing but turned a 15x8 k prop at 16,400 rpm reliably. this motor was lost in crashbut working on a new one with g 270 car cylinder which has better ports and will use 29cc stroker crank. will out perform any 26 by a wide margin if you know how to do it. theres nothing more workable then a zenoah
ok lets talk 26cc power. take zenoah g26pum case and add 12mm wide bearing to the front where the seal was on the marine motors which use only one bearing in front. its the same case for the plane motors which use 2-8mm bearings. machine hub 4 mm for 12mm bearing clearance and extra support. zenoah chung yang full circle stuffed crank for 26cc boats. red coil with fulley hand ported 26puh heli cylinder on .012 copper base gasket. zero drag seal in rear and boost bottle for cars. g26 marine piston with .8mm ring. walbro ported 257 carb. the outward appearance of the motor is stock except for the coil. the last on took 19hrs of sanding, grinding ,polishing but turned a 15x8 k prop at 16,400 rpm reliably. this motor was lost in crashbut working on a new one with g 270 car cylinder which has better ports and will use 29cc stroker crank. will out perform any 26 by a wide margin if you know how to do it. theres nothing more workable then a zenoah
11 hp at 16400 from a 26cc engine (thats 420 horses per liter) still looks like a standard typical airplane engine to me, allowable on all airfields, albeit a bit expensive when done.
An excellent racing engine with a whole team of tecnicians behind it will produce about 20+ HP per liter per 1000 rpm. To boast more is dreaming or bragging.
Normally, when you increase rpm, torque suffers as you go up the rpm range. There is no IF about it. The zenoah 26cc would have to turn 20000 rpm to get 420 hp per liter. This is the math all engines follow.
09-24-2008 | 01:05 PM
#77
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From: Scottsville,
KY
RE: Evolution 26GT2...Good bye you JUNK.
ORIGINAL: 540horses
the modifications ralph does is improvments in ignition design and he does a great job. the type of performance modifications possible is what i explore. because you never heard of me does not mean im not an authority as well.
the modifications ralph does is improvments in ignition design and he does a great job. the type of performance modifications possible is what i explore. because you never heard of me does not mean im not an authority as well.
09-24-2008 | 02:53 PM
#78
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From: mims,
FL
RE: Evolution 26GT2...Good bye you JUNK.
ORIGINAL: pe reivers
If you know power, you also know the limits of a normal aspirated two stroke engine.
An excellent racing engine with a whole team of tecnicians behind it will produce about 20+ HP per liter per 1000 rpm. To boast more is dreaming or bragging.
Normally, when you increase rpm, torque suffers as you go up the rpm range. There is no IF about it. The zenoah 26cc would have to turn 20000 rpm to get 420 hp per liter. This is the math all engines follow.
ORIGINAL: 540horses
who said it has 11hp if you cant believe it then dont-who cares. i had a gms 120 with a pitts that turned the same prop 16,000. it must have 10 hp right. my post is for intelligent people. as far as snip -do you know how to modify engines,or just look down on those who do.
ORIGINAL: pe reivers
Hmmm...
11 hp at 16400 from a 26cc engine (thats 420 horses per liter) still looks like a standard typical airplane engine to me, allowable on all airfields, albeit a bit expensive when done.
ORIGINAL: 540horses
ok lets talk 26cc power. take zenoah g26pum case and add 12mm wide bearing to the front where the seal was on the marine motors which use only one bearing in front. its the same case for the plane motors which use 2-8mm bearings. machine hub 4 mm for 12mm bearing clearance and extra support. zenoah chung yang full circle stuffed crank for 26cc boats. red coil with fulley hand ported 26puh heli cylinder on .012 copper base gasket. zero drag seal in rear and boost bottle for cars. g26 marine piston with .8mm ring. walbro ported 257 carb. the outward appearance of the motor is stock except for the coil. the last on took 19hrs of sanding, grinding ,polishing but turned a 15x8 k prop at 16,400 rpm reliably. this motor was lost in crashbut working on a new one with g 270 car cylinder which has better ports and will use 29cc stroker crank. will out perform any 26 by a wide margin if you know how to do it. theres nothing more workable then a zenoah
ok lets talk 26cc power. take zenoah g26pum case and add 12mm wide bearing to the front where the seal was on the marine motors which use only one bearing in front. its the same case for the plane motors which use 2-8mm bearings. machine hub 4 mm for 12mm bearing clearance and extra support. zenoah chung yang full circle stuffed crank for 26cc boats. red coil with fulley hand ported 26puh heli cylinder on .012 copper base gasket. zero drag seal in rear and boost bottle for cars. g26 marine piston with .8mm ring. walbro ported 257 carb. the outward appearance of the motor is stock except for the coil. the last on took 19hrs of sanding, grinding ,polishing but turned a 15x8 k prop at 16,400 rpm reliably. this motor was lost in crashbut working on a new one with g 270 car cylinder which has better ports and will use 29cc stroker crank. will out perform any 26 by a wide margin if you know how to do it. theres nothing more workable then a zenoah
11 hp at 16400 from a 26cc engine (thats 420 horses per liter) still looks like a standard typical airplane engine to me, allowable on all airfields, albeit a bit expensive when done.
An excellent racing engine with a whole team of tecnicians behind it will produce about 20+ HP per liter per 1000 rpm. To boast more is dreaming or bragging.
Normally, when you increase rpm, torque suffers as you go up the rpm range. There is no IF about it. The zenoah 26cc would have to turn 20000 rpm to get 420 hp per liter. This is the math all engines follow.
09-24-2008 | 04:14 PM
#79
Senior Member
RE: Evolution 26GT2...Good bye you JUNK.
To turn a normal 15x8 prop at those rpm, you need 11hp. Period! The blade tips will be supersonic though, but that seems to bother you none.
If you meant some kind of single narrow blade toothpick prop, please say so instead of badmouthing other engines than the ones you like best.
In standard configuration out of the box, I know of no gas airplane engine that outperforms the 26cc MVVS, sold in the USA as evolution engine. You did not convince me one iota otherwise. Using the data you did does not improve things being beyond the realm of the normal two stroke engine.
Please provide data to back up your claims.
If you meant some kind of single narrow blade toothpick prop, please say so instead of badmouthing other engines than the ones you like best.
In standard configuration out of the box, I know of no gas airplane engine that outperforms the 26cc MVVS, sold in the USA as evolution engine. You did not convince me one iota otherwise. Using the data you did does not improve things being beyond the realm of the normal two stroke engine.
Please provide data to back up your claims.
09-24-2008 | 04:27 PM
#80
Senior Member
My Feedback: (14)
RE: Evolution 26GT2...Good bye you JUNK.
ORIGINAL: pe reivers
The MVVS (or evolution) 26cc is the most powerful engine in it's class, and as such more demanding on it's users, as well as a bit more prone to failures. The comments on RCU do not reflect the real world, since satisfied users do not complain here.
MVVS took all complaints very seriously, and redesigned the engine without any power sacrifice or weight penalty.
I consider it not very fair to bash a brand engine just because some users seem to have problems with it, and just because they shout hard.
I have had a few users complaining, which could be solved by the twist of a srew driver. I also had some serious complaints, which were properly addressed by the factory, eventually leading to the abovementioned redesign. These issues, though present, did not account for an unacceptable percentage of users. The redesign should reduce this even further, whilst keeping the engine in the top of power to weight ratio engines that makes gas engines of this small capacity suitable for 3D flight.
The MVVS (or evolution) 26cc is the most powerful engine in it's class, and as such more demanding on it's users, as well as a bit more prone to failures. The comments on RCU do not reflect the real world, since satisfied users do not complain here.
MVVS took all complaints very seriously, and redesigned the engine without any power sacrifice or weight penalty.
I consider it not very fair to bash a brand engine just because some users seem to have problems with it, and just because they shout hard.
I have had a few users complaining, which could be solved by the twist of a srew driver. I also had some serious complaints, which were properly addressed by the factory, eventually leading to the abovementioned redesign. These issues, though present, did not account for an unacceptable percentage of users. The redesign should reduce this even further, whilst keeping the engine in the top of power to weight ratio engines that makes gas engines of this small capacity suitable for 3D flight.
-
Just for clarity, is Horizon's Evolution 26GX the redesign that you are referring to?
Ed Cregger
09-24-2008 | 04:36 PM
#81
Senior Member
RE: Evolution 26GT2...Good bye you JUNK.
I do not know Ed. I assume that Horizon sells MVVS gas engines that they make for them, and that they incorporate the latest design changes.
The engine can be recognized by a thicker 9mm crankpin that is longer as well, thus increasing bearing capacity by 43%. To accomodate the larger bearing, the casting had to be changed, as well as the rear cover. If the GX fits this bill, yes, they are the latest design. One of these just won both the Swedish IMAC sportsman and freestyle class 2008.
The engine can be recognized by a thicker 9mm crankpin that is longer as well, thus increasing bearing capacity by 43%. To accomodate the larger bearing, the casting had to be changed, as well as the rear cover. If the GX fits this bill, yes, they are the latest design. One of these just won both the Swedish IMAC sportsman and freestyle class 2008.
09-24-2008 | 04:40 PM
#82
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From: Lakeland,
MN
RE: Evolution 26GT2...Good bye you JUNK.
540horses. Ammuse yourself and learn something. Pe did not state that you claimed to state those hp figures. Its all math. Cruise on over to his website and play with the prop/hp calculator. It requires some HONEST inputs. At the end a calculated hp reading will be very close to correct. I want to see YOUR data and video of said 26cc performing as you describe it.
You say you dont know who Pe is. He is THE person who will prove you wrong everytime. THE person who has more knowledge about performance RC engines than all of us combined.
When was the last time you created a thrust calculator?
Anybody can be a keyboard racer and talk big. I have Desktop Dyno and have built V8 engines over 4000hp(on paper). See, not very credible is it.
You say you dont know who Pe is. He is THE person who will prove you wrong everytime. THE person who has more knowledge about performance RC engines than all of us combined.
When was the last time you created a thrust calculator?
Anybody can be a keyboard racer and talk big. I have Desktop Dyno and have built V8 engines over 4000hp(on paper). See, not very credible is it.
09-24-2008 | 04:56 PM
#83
Senior Member
RE: Evolution 26GT2...Good bye you JUNK.
Octanehuffer,
I worked on inline 9-cylinders of 8500 horses, and they needed only 85 rpm for that.
There's no substitute for cubic inches if you want to keep the rpm down for the same power.
I worked on inline 9-cylinders of 8500 horses, and they needed only 85 rpm for that.
There's no substitute for cubic inches if you want to keep the rpm down for the same power.
09-24-2008 | 05:21 PM
#84
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From: Riverton,
WY
RE: Evolution 26GT2...Good bye you JUNK.
With a real tuned pipe 11hp would be do-able, but it would be the most ill tempered off/on toggle switch engine ever. Never work in an airplane, a boat or dyno maybe
09-24-2008 | 05:36 PM
#85
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From: mims,
FL
RE: Evolution 26GT2...Good bye you JUNK.
ORIGINAL: octanehuffer
540horses. Ammuse yourself and learn something. Pe did not state that you claimed to state those hp figures. Its all math. Cruise on over to his website and play with the prop/hp calculator. It requires some HONEST inputs. At the end a calculated hp reading will be very close to correct. I want to see YOUR data and video of said 26cc performing as you describe it.
You say you dont know who Pe is. He is THE person who will prove you wrong everytime. THE person who has more knowledge about performance RC engines than all of us combined.
When was the last time you created a thrust calculator?
Anybody can be a keyboard racer and talk big. I have Desktop Dyno and have built V8 engines over 4000hp(on paper). See, not very credible is it.
540horses. Ammuse yourself and learn something. Pe did not state that you claimed to state those hp figures. Its all math. Cruise on over to his website and play with the prop/hp calculator. It requires some HONEST inputs. At the end a calculated hp reading will be very close to correct. I want to see YOUR data and video of said 26cc performing as you describe it.
You say you dont know who Pe is. He is THE person who will prove you wrong everytime. THE person who has more knowledge about performance RC engines than all of us combined.
When was the last time you created a thrust calculator?
Anybody can be a keyboard racer and talk big. I have Desktop Dyno and have built V8 engines over 4000hp(on paper). See, not very credible is it.
09-24-2008 | 10:50 PM
#90
Senior Member
My Feedback: (14)
RE: Evolution 26GT2...Good bye POS.
Mine cost me $399.95 a couple of years ago. It is still NIB. I'm thinking about selling it, but only because I'm dropping back to smaller models. Even has the tuned pipe and manifold to go with it. It is a version one engine with the 4.8 VDC ignition system.
In fact, I think I'll list it on RCU during the next few days. Sure is purty.
Ed Cregger
In fact, I think I'll list it on RCU during the next few days. Sure is purty.
Ed Cregger
09-25-2008 | 02:25 AM
#91
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From: Oulu, FINLAND
RE: Evolution 26GT2...Good bye you JUNK.
EUR price have also gone up but not so much. Dollar exchange rate against EUR is so weak that prices have gone up for sure. MVVS/Evolution is not the cheapest engine in the bunch anyway.
09-25-2008 | 03:54 AM
#92
Senior Member
RE: Evolution 26GT2...Good bye you JUNK.
The USD is slowly recovering to levels where exchange rates should be, so prices should drop again.
@ TKG,
I too think 11hp is doable, but it needs massive expertise and at least 20,000 rpm in like you said, an extremely peaky engine if not equipped with a power valve.
The boat guys do run this engine up to 18,000 rpm, or so I heard.
@ TKG,
I too think 11hp is doable, but it needs massive expertise and at least 20,000 rpm in like you said, an extremely peaky engine if not equipped with a power valve.
The boat guys do run this engine up to 18,000 rpm, or so I heard.
09-25-2008 | 07:54 AM
#93
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From: mims,
FL
RE: Evolution 26GT2...Good bye you JUNK.
ORIGINAL: pe reivers
The USD is slowly recovering to levels where exchange rates should be, so prices should drop again.
@ TKG,
I too think 11hp is doable, but it needs massive expertise and at least 20,000 rpm in like you said, an extremely peaky engine if not equipped with a power valve.
The boat guys do run this engine up to 18,000 rpm, or so I heard.
The USD is slowly recovering to levels where exchange rates should be, so prices should drop again.
@ TKG,
I too think 11hp is doable, but it needs massive expertise and at least 20,000 rpm in like you said, an extremely peaky engine if not equipped with a power valve.
The boat guys do run this engine up to 18,000 rpm, or so I heard.
09-25-2008 | 09:44 AM
#94
My Feedback: (3)
RE: Evolution 26GT2...Good bye you JUNK.
Some of you may notice that political references were edited out of the messages. This is my opportunity to ask that everyone keep their comments from getting too personal when disagreeing with the comments of other members.
09-25-2008 | 11:03 AM
#95
Senior Member
My Feedback: (4)
RE: Evolution 26GT2...Good bye you JUNK.
I said I would never come back..OK, so I lied..
This nonsense about 26cc engines is getting downright funny..
I converted the first G26s ever done, way back when...Still at it, I kinda know about 26cc engines.
I also kinda know about racing engines and speed...I don't do any mods to engines for better performance, leaving that to those who can...
We have been racing since 1991...ALL sizes, many different planes..
A STOCK G62 with an APC race prop will go about 130 mph turning 9600 in the air..It CAN be done STOCK, I am the engine inspector, have been for 16 years, have seen the insides of hundreds of G62...
A STOCK GT80 with an APC race prop turning about 9000 will clock about 145...
A modified GT80 turning a 19-18 carbon race prop at 12000 will clock about 190..
Our racing racing Herbrandson 289 turning a 21x27 race prop at 9400 clocks about 235..
To suggest ANY modified 26 or 29cc engine will reach 16,400 rpm and go 170 is LUDICROUS...
An 8 pitch prop turning 16,400 is almost fantasy, but for the benefit of the doubt, the ACTUAL speed would be closer to 124...
We race Sundowners with Moki 210s...Best speed so far is about 125 mph..RADAR clocked, no fantasy numbers..
If ANYONE thinks they can make a G26 or Chung Yang 29cc stroker turn a 15-8 prop at 12,000 on the ground with NO PIPE, I will pay $1000 for that engine...
Any takers, or is it just big talk ????
It must turn that rpm on MY test stand here in Williams, Arizona, with MY 15-8 Mejzlik and TNC tach...
As to the MVVS or Evolution being the most powerful 26cc engine, I have my doubts...
A $349 G26EI will run with or exceed any other 26cc engine currently sold, and do it CHEAPER....
G26s are designed to run at high rpm, the heli engines run at 10,000 ALL DAY LONG with no problems...
You don't need a no drag seal on the rear crank extension, just cut it flush with the bearing and put a plug in the case where the seal was...ALL my 26s are done this way..Same for the front seal, the stock G26s have 2 front bearings, the outer one is sealed..
FWIW, a Sundowner running a 2.4 gasser and pipe goes about 135....
Rave on....
This nonsense about 26cc engines is getting downright funny..
I converted the first G26s ever done, way back when...Still at it, I kinda know about 26cc engines.
I also kinda know about racing engines and speed...I don't do any mods to engines for better performance, leaving that to those who can...
We have been racing since 1991...ALL sizes, many different planes..
A STOCK G62 with an APC race prop will go about 130 mph turning 9600 in the air..It CAN be done STOCK, I am the engine inspector, have been for 16 years, have seen the insides of hundreds of G62...
A STOCK GT80 with an APC race prop turning about 9000 will clock about 145...
A modified GT80 turning a 19-18 carbon race prop at 12000 will clock about 190..
Our racing racing Herbrandson 289 turning a 21x27 race prop at 9400 clocks about 235..
To suggest ANY modified 26 or 29cc engine will reach 16,400 rpm and go 170 is LUDICROUS...
An 8 pitch prop turning 16,400 is almost fantasy, but for the benefit of the doubt, the ACTUAL speed would be closer to 124...
We race Sundowners with Moki 210s...Best speed so far is about 125 mph..RADAR clocked, no fantasy numbers..
If ANYONE thinks they can make a G26 or Chung Yang 29cc stroker turn a 15-8 prop at 12,000 on the ground with NO PIPE, I will pay $1000 for that engine...
Any takers, or is it just big talk ????
It must turn that rpm on MY test stand here in Williams, Arizona, with MY 15-8 Mejzlik and TNC tach...
As to the MVVS or Evolution being the most powerful 26cc engine, I have my doubts...
A $349 G26EI will run with or exceed any other 26cc engine currently sold, and do it CHEAPER....
G26s are designed to run at high rpm, the heli engines run at 10,000 ALL DAY LONG with no problems...
You don't need a no drag seal on the rear crank extension, just cut it flush with the bearing and put a plug in the case where the seal was...ALL my 26s are done this way..Same for the front seal, the stock G26s have 2 front bearings, the outer one is sealed..
FWIW, a Sundowner running a 2.4 gasser and pipe goes about 135....
Rave on....
09-25-2008 | 11:22 AM
#96
Senior Member
RE: Evolution 26GT2...Good bye you JUNK.
[quote]ORIGINAL: 540horses
ORIGINAL: pe reivers
snip
its been pointed out to me that i have not presented my engine properly. the readings i have are not the plane on the table rapping the engine up. these are in flight onboard readings during the planes best dive with max rpm recorded. you push the button and it tells you what the engine hit. and yes the prop screams and some guys complain, but i personally loved it. this is in a sundowner at an est. 170mph. ground readings are in the 12,500 range.
snip
its been pointed out to me that i have not presented my engine properly. the readings i have are not the plane on the table rapping the engine up. these are in flight onboard readings during the planes best dive with max rpm recorded. you push the button and it tells you what the engine hit. and yes the prop screams and some guys complain, but i personally loved it. this is in a sundowner at an est. 170mph. ground readings are in the 12,500 range.
However, such an engine is maintenance sensitive. When I sold it because I stopped racing, the engine lived one week before the new owner blew it up, We worked on it every day before and after training, before and after races, whilst he thought it was just a fast bike.
Too bad you did not measure your plane speed through the gates. It is very difficult to estimate plane speeds. In fear of being pedantic, I calculated the speed between 110 an 120 mph (which is very fast for an 8" prop) with the provided data. If you have hard data, I will be most happy to check those in my calculator and update it if required.
09-25-2008 | 01:16 PM
#98
Senior Member
My Feedback: (4)
RE: Evolution 26GT2...Good bye you JUNK.
Thanks, PE..
The above is the first post, don't know about Barrie..
I posted a few things under Antique's name, thought it would be better to just come back as me...
You're dead on about the speed thing, we use radar, some people are very surprised to see that their pride and joy isn't as fast as it looks...
The above is the first post, don't know about Barrie..
I posted a few things under Antique's name, thought it would be better to just come back as me...
You're dead on about the speed thing, we use radar, some people are very surprised to see that their pride and joy isn't as fast as it looks...
09-25-2008 | 07:38 PM
#100
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From: mims,
FL
RE: Evolution 26GT2...Good bye you JUNK.
ORIGINAL: RC Ignition
I said I would never come back..OK, so I lied..
This nonsense about 26cc engines is getting downright funny..
I converted the first G26s ever done, way back when...Still at it, I kinda know about 26cc engines.
I also kinda know about racing engines and speed...I don't do any mods to engines for better performance, leaving that to those who can...
We have been racing since 1991...ALL sizes, many different planes..
A STOCK G62 with an APC race prop will go about 130 mph turning 9600 in the air..It CAN be done STOCK, I am the engine inspector, have been for 16 years, have seen the insides of hundreds of G62...
A STOCK GT80 with an APC race prop turning about 9000 will clock about 145...
A modified GT80 turning a 19-18 carbon race prop at 12000 will clock about 190..
Our racing racing Herbrandson 289 turning a 21x27 race prop at 9400 clocks about 235..
To suggest ANY modified 26 or 29cc engine will reach 16,400 rpm and go 170 is LUDICROUS...
An 8 pitch prop turning 16,400 is almost fantasy, but for the benefit of the doubt, the ACTUAL speed would be closer to 124...
We race Sundowners with Moki 210s...Best speed so far is about 125 mph..RADAR clocked, no fantasy numbers..
If ANYONE thinks they can make a G26 or Chung Yang 29cc stroker turn a 15-8 prop at 12,000 on the ground with NO PIPE, I will pay $1000 for that engine...
Any takers, or is it just big talk ????
It must turn that rpm on MY test stand here in Williams, Arizona, with MY 15-8 Mejzlik and TNC tach...
As to the MVVS or Evolution being the most powerful 26cc engine, I have my doubts...
A $349 G26EI will run with or exceed any other 26cc engine currently sold, and do it CHEAPER....
G26s are designed to run at high rpm, the heli engines run at 10,000 ALL DAY LONG with no problems...
You don't need a no drag seal on the rear crank extension, just cut it flush with the bearing and put a plug in the case where the seal was...ALL my 26s are done this way..Same for the front seal, the stock G26s have 2 front bearings, the outer one is sealed..
FWIW, a Sundowner running a 2.4 gasser and pipe goes about 135....
Rave on....
I said I would never come back..OK, so I lied..
This nonsense about 26cc engines is getting downright funny..
I converted the first G26s ever done, way back when...Still at it, I kinda know about 26cc engines.
I also kinda know about racing engines and speed...I don't do any mods to engines for better performance, leaving that to those who can...
We have been racing since 1991...ALL sizes, many different planes..
A STOCK G62 with an APC race prop will go about 130 mph turning 9600 in the air..It CAN be done STOCK, I am the engine inspector, have been for 16 years, have seen the insides of hundreds of G62...
A STOCK GT80 with an APC race prop turning about 9000 will clock about 145...
A modified GT80 turning a 19-18 carbon race prop at 12000 will clock about 190..
Our racing racing Herbrandson 289 turning a 21x27 race prop at 9400 clocks about 235..
To suggest ANY modified 26 or 29cc engine will reach 16,400 rpm and go 170 is LUDICROUS...
An 8 pitch prop turning 16,400 is almost fantasy, but for the benefit of the doubt, the ACTUAL speed would be closer to 124...
We race Sundowners with Moki 210s...Best speed so far is about 125 mph..RADAR clocked, no fantasy numbers..
If ANYONE thinks they can make a G26 or Chung Yang 29cc stroker turn a 15-8 prop at 12,000 on the ground with NO PIPE, I will pay $1000 for that engine...
Any takers, or is it just big talk ????
It must turn that rpm on MY test stand here in Williams, Arizona, with MY 15-8 Mejzlik and TNC tach...
As to the MVVS or Evolution being the most powerful 26cc engine, I have my doubts...
A $349 G26EI will run with or exceed any other 26cc engine currently sold, and do it CHEAPER....
G26s are designed to run at high rpm, the heli engines run at 10,000 ALL DAY LONG with no problems...
You don't need a no drag seal on the rear crank extension, just cut it flush with the bearing and put a plug in the case where the seal was...ALL my 26s are done this way..Same for the front seal, the stock G26s have 2 front bearings, the outer one is sealed..
FWIW, a Sundowner running a 2.4 gasser and pipe goes about 135....
Rave on....
