godzukihop: your hyper 12 is ready
 

Bro., your engine is ready for racing now...... ;)

http://www.rcmanufactory.com/ENG/hy12-000.jpg

http://www.rcmanufactory.com/ENG/hy12-001.jpg

http://www.rcmanufactory.com/ENG/hy12-002.jpg

http://www.rcmanufactory.com/ENG/hy12-003.jpg

http://www.rcmanufactory.com/ENG/hy12-004.jpg

http://www.rcmanufactory.com/ENG/hy12-005.jpg

http://www.rcmanufactory.com/ENG/hy12-006.jpg

http://www.rcmanufactory.com/ENG/hy12-007.jpg

hey blee, how much does it cost for you to modify one of these, i got a mate who might be interested.

mitchell

Hi Benny,
could you mod a picco evo2 .21? are you in HK or usa?
thanks

See PM. :)

I am in USA........ my brother's shop is in HK.

See PM. :)

Hey Benny got your PM thankyou for that!
cheers:)

Replied. :)

Any timings canged ?

Looking at the crankshaft I think not. If so then it is a nice job but forgot to sharpen the closing end.

A well known engine manufacturer has this remark in there product information: (source: novarossi.com)

Yet engine tuners do the exact opposite... :sneaky:

Ok, this is probably getting me flamed again, but I do NOT see ANY modifications to that engine, other than a nice polishing job, which will do almost nothing for the engines performance, in some areas it will even hurt performance.

No timing change on the crank and none on the sleeve.

The teardrops won't improve the performance in a noticeable way.

We had a guy at our track who modified his engine after pictures he found on the web. Looked about the same but wasn't the least bit faster.....:lol:

Are you serious?:rolleyes:

100%.

If you have a different opinion, please tell me what you think, the modifications to this engine are.

well an easy one is the crank....look at the end that the piston attaches to in the first picture and then in the second....you will see that there is a notch in it. Also look at the ports in the sleeve in the first picture then in the rest. U will notice that there have been notches put in the corner....what this does i couldnt tell you but there is a very distinct difference in the original and the modified:sneaky:

No two modifications are the same as are the modifiers. Let the end user be the judge. I don't see where your crditical assumption was necessary or needed. You could've simply said; "let us know how it turns out". Why rain on someone's parade?:(

The main performance of 2-stroke engines comes from the timings in combination with the exhaust. Flowing does help a tiny bit for an easy running engine but it does not boost any performance, even the silicone insert is a meaningless hype.
A nice book you can search to with google to download is is the "Jennings 2 stroke tuning guide"

But hey, if you want to pay for such work I will not stop you but I like to say that a very tiny change to the cranktiming which anyone can do by himself will do more to the performance than this (I must say) nice piece of work.

An engine with less restrictive and properly directed fuel flow, will be more efficient and make more power at a lower temperature, which will definitely be a boost in performance.

Not much modding done at most if the buyer requested certain features then it's understandable other than that timing is a big factor which was not done & the cuts to the sleeve do not look in any way to the average modded engine just looks like 1 specific bit used the details look like very inexperienced

MIND YOUR BUSINESS
 

All of those with the negative comments are truly amazing! Didn't your mothers ever tell you if you have nothing good to say then SHUT UP!!!!:flaming: You guys post as if you are smarter than Murnan. What gives? Are you so insecure that you feel the need to put someone down in a public forum in an attempt to make yourself seem smart. If you really wanted to do the right thing you would have sent Benny or myself a PM expressing your concern. Give the guy a break, you have no idea of the deal I have with Benny. And to end this, if it is no good it is a damn RTR motor, so NO BIG DEAL!!!!

I had a chance to see the Worlds winning engine being disassembled for inspection once. It looked bone stock. No fancy cuts or polishes. I would love to have been able to put a degree wheel on it. :D

That being said, I have found that a little crank work to reduce windage seems to give a nice little performance boost. I don't have the dyno to prove it but the track seems to back me up.

Thank you for negative comments, I knew you guys are jealous. ;)

Whatever you said, it would not hurt me anyhow....... I just share my joy to friends and they would understand very well. :nod:

My engines are still could run very fast even your comments are acrimonious. :lol:

To all PM senders:

All PMs replied. ;) Thank you!

learning from the negative comment is a good sign!

If you look close enough and look at the right places, you will be supprised!
Timming is important to suit the track in my opinion which many here can do. but Ive seem team engines actually have different "chroming" on the inside and the taper on the piston wear at different places... now...haaaaa... I may have said too much already :sneaky:

Looks like a very nice job Blee! godzukihop I wanna see that thing in action!! I know why you had it done!! :sneaky: It will work!!

See attachement for a Sirio sleeve from from one of the Sirio topdrivers at the worlds in Cordoba. It is a real standard looking sleeve (timings I can not tell). An at the worlds top 4 qualifying engine we all want to have so we do want this stock looking sleeve?

Funny that people always get angry if others have a critical look. Most people find this hobby expensive enough and with common sense it can be very affordable. This kind of tunning (for sure on a RTR engine) has nothing to do with common sense but does set an example that there is a market for it.
Regarding Murnan, I know he he is doing more than only creating fancy looks to the parts.

Modified
 

I value the opinions of The 2 that posted that the engine mods shown will not make a big difference. I have read the 2 stroke tuners book by Gordon Jennings and it is a wealth of information. Crank timing , port timing and height will make alot more difference than fancy cuts and polishing. The posts these guys made are to inform people so they know what there buying and are trying to help.

However I didn't see you correct any timming on your engines. ;)

When you helped to sell edward's engine, you always said cutting on the cylinder sleeve is not necessary and stupid.

Last time you said your enlarged the intake (crankshaft) on GRP engine..... I beblieved you screw up the engine finally and dare not to post any photo.

Now you get free Capricorn engine sponsored, the cylinder sleeve also has cutting on, why you didn't mention that cut is stupid and not necessary.

Obviously, all your comments are business talk, nothing help to anybody. ;)

I am not producing any engine, whether the engines are good or bad is not my busniness and not my concern. I just like to fine tune all brands of engine and share this fun with friends. Up till now, I didn't received any feedback that my modified engines would run slower than original stock engines in the past ten years. Beside, I modify engines for friends basically. They like it, they would come back to request modification again. And you guys are not necessary to spend time to fight your business here. Put your sight further and save your time to fight with JP, Murnan business. ;)

As I mention before the engine will run smoother and only that feeling can make a difference. Beside that, modding a new engine from the box is not giving any information about how it must run without it.

Save your time on your engines and improve your driving skill would be more practical than BS too much here......... beside you may post your engine pictures and offer everybody a lesson and tell how great you are. Here is very open, you may promote your good concept and business here anytime. ;)

Every tuner has different theory and interpretation. An engine whether could run fast or run with “high torque” has been determined on the engine blue print and what material going to be used. Material is very important to engine performance too especially on piston and conrod. (I believe companies have similar concept and design nowadays.) Take a look the pistons on $100 and $400 engines if has chance next time. Everybody could tell the difference. Under the electronic microscope, everybody could tell the true inside story.

Modification is just a fine tuning on the engine since mass production may not have stable and consistent quality. I always want the engine run smoother than as stock rather go to be the fastest one. As everybody knew run faster mean the engine would consume more fuel and shorten the run time and shorten the life time.

You guys always mention about timing……… come on, don’t fool people around and people are not stupid here. (I also have a Mechanical Eng. degree and I was major in automobile and machine design field; and I am in manufacturing industry too.) Only a 0.00XX inches porting cutting would turn the engine become a Ferrari is hard to convince people……. If it is so simple, every engine company could have this done for you before putting into the packaging.

I do not produce engine and do not sell any engine here. I just show and share my joys to friends here. After I have modified 300s engines in past years, I have learnt a lot and knew what should do and what should not do.

However I knew you guys are jealous because you don’t know how to create a fancy engine. I don’t mind you guys keep on criticizing and I will post more pictures later and offer you more chance to have more acrimonious comments. Sounds good eh! :lol:

+1
Not here to flame on you Blee but if you can't take any feedback given then you should of thought twice before posting your work.
No one here is jealous
But you should not rant about a motor that you recieved a couple of months & qoute that the mod that was done was not to your standards & you would have to re do it & then not post any proof what you've done to make it better
Good Luck with your modifications

+1, He should be called an engine detailer, after all that is what he have been doing, making the internals look nice :)

Just help a friend detail modified a sheep engine.......... refilled with my silicone also since a deep scratch was found (on the original silicone) when opened up the engine....... crankshaft and cylinder sleeve cutting have been fine tuned as well.

I have tested mine earlier and have same job on my engine. :smile:

Come on guys...... ;)


http://www.rcmanufactory.com/ENG/Sheep01.jpg

http://www.rcmanufactory.com/ENG/Sheep02.jpg

http://www.rcmanufactory.com/ENG/Sheep03.jpg

http://www.rcmanufactory.com/ENG/Sheep04.jpg

http://www.rcmanufactory.com/ENG/Sheep05.jpg

http://www.rcmanufactory.com/ENG/Sheep06.jpg

http://www.rcmanufactory.com/ENG/Sheep07.jpg

http://www.rcmanufactory.com/ENG/Sheep08.jpg

And again the same remarks:
- no sharpened edge on the closing side
- and so far I can see no timings changed.

And beside that, this engine will run great without any extra work.

Flowing is a better word to explain your work.....

.

What is a Sheep engine:lol:
Still not impressed with what you've done,polishing & using the same tip to dremel a bigger opening does not in any way make it better keep trying you'll just learn more

i have a question. what does murnan do to his engines and make them faster. he must be starting of with an original engine and going from there. what more does he do than blee??

What everybody , who understand the physics of a two stroke engine does.

First, you test a stock engine extensively to get a feel for the stock performance.
Then, you determine where the engine is strong and where it needs improvement., i.e. does it have a lot of torque or more top end power.

Then you you put a degree wheel on the engine and measure all it's ports (crank induction, boost, Schnürle and exhaust)

All this information will give you a pretty good idea how to change the timing to improve the weak points of this engine without destroying the fuel mileage.

Now you modify the engine and go testing again to see if reality confirms your theories. If everything works as you want it to, you document what you did and you are ready to modify this particular engine type.

If not, you go back change the timing even more and go back testing.
if you over did it, you take the next engine and start over.

This way you will, over a long time, accumulate a lot of knowledge and a database, which will help you to get to a good result with less and less testing.

As you can see, to get to this point, you will have invested a lot of money and time and this is the reason why no engine tuner who knows what he's doing, will ever share his knowledge with you, or show pictures of his work online.

When Uriah and I started modifying engines, Richey mods where about the only .12's available.
Our first thought was to get one and copy it. We did get a few clues, but it took quite a long time before we understood what we were trying to do.

To me, EdwardN was a great help. He explained engine theory to me, because we are good friends.
Without his help, I would have probably given up and started buying modified engines.
Here is a quote from Edward: Sleeve cuts and polishing is for fools.
The engines I have seen from him looked as stock as any other engine, but the were beasts.

Ok, of the soap box now....:lol:

As I mentioned a while ago in another topic: Trial and error

Only when you start this modding business.

With every engine you did and the written knowledge that is available, you should be able to reach the understanding work systematically after a while.

Always doing trial and error would be VERY expensive in the long run

If you want some extra performance try something like this, no need for a degree wheel. You will only need a steady hand, if you have an old piston laying around you might want to try it on that first.
I don't do anything with fancy polishing or fancy grooves.
Btw this is al i'm giving you, the rest i will keep to myself.

http://i36.photobucket.com/albums/e3...t/100_2691.jpg
http://i36.photobucket.com/albums/e3...t/100_2692.jpg

I tell you what, lucky Uriah knows how to make them go quick, cause he sure doesn't score any points in the looks department :lol: