Rotax 277 piston port to reed valve conversion

[Desertduler]

I will be posting videos and progress with this engine on my youtube channel as this is a specialized project that not everyone would be interested in.
https://www.youtube.com/user/desertduler1

[Poboy kartman]

Hmmmm.....a Rotax 277 powered Poboy can crusher????

[itsid]

Originally Posted by Desertduler

I will be posting videos and progress with this engine on my youtube channel as this is a specialized project that not everyone would be interested in.
https://www.youtube.com/user/desertduler1

channel added to my bookmarks.

I'll be watching

'sid

[Desertduler]

Originally Posted by itsid

channel added to my bookmarks.

I'll be watching

'sid

Great Sid! I am going to make some videos of engine work and enhancements and porting and I will be logging them on my channel along with Desert kart racing both daytime and nighttime races,along with more expansion chamber building and I will have my wife's kart on there and I am going to build a shifter kart and I am going to use one of my KTM race bike engines on it,a 540 four stroke that I used for Desert racing that I have done some trick engine mods to it and it pulls like a freight train on nitrous oxide!

[itsid]

And I am going to watch them all...
Maybe I can learn a few things

And while I like videos, and I'm perfectly able to sit and stare at yt vids for hours,
it's a bit sad, that you don't intend to post them up here as well.
Since the one thing I do not like on yt is their comment system...
too many trolls, absurd sorting mechanics, and overall annoyingly bad.

'sid

[Desertduler]

Originally Posted by itsid

And I am going to watch them all...
Maybe I can learn a few things

And while I like videos, and I'm perfectly able to sit and stare at yt vids for hours,
it's a bit sad, that you don't intend to post them up here as well.
Since the one thing I do not like on yt is their comment system...
too many trolls, absurd sorting mechanics, and overall annoyingly bad.

'sid

Well if you like them then you can post them here because I am a man of my word and everything I say I am going to do I do as you will see in time. Wait until you see our starter cannon for the races.

[Desertduler]

As far as trolls go, I weed them out, there are indeed some weirdos in the world for sure! And there are a lot of "You should have done this or you should have done that" OK mister brain you show me what you have done or what you have! I know what you are talking about for sure.

[Poboy kartman]

Originally Posted by itsid

And I am going to watch them all...
Maybe I can learn a few things

And while I like videos, and I'm perfectly able to sit and stare at yt vids for hours,
it's a bit sad, that you don't intend to post them up here as well.
Since the one thing I do not like on yt is their comment system...
too many trolls, absurd sorting mechanics, and overall annoyingly bad.

'sid

Did you forget I was HERE?????

[Desertduler]

Originally Posted by Poboy kartman

Did you forget I was HERE?????

Never My Friend! If you were asking me!

[Desertduler]

I have five gallons of 91 octane fuel mixed 25:1 with Maxima K2 oil and 4 brand new tires installed on the kart.I am heading out in the morning to the lakebed to set up a course to torture test this engine.
The temps are going to be mid sixties and by the end of the day I more than likely will have burnt the brand new tires up.I will be setting up a course with tight and open sections in order to see how well this engine works in the dirt.

[Doc Sprocket]

Dynamite! That oughta be a riot. A dry lakebed really does sound like the ideal place to shake something down. One day, I would like to experience that in person.

[Desertduler]

Originally Posted by Doc Sprocket

Dynamite! That oughta be a riot. A dry lakebed really does sound like the ideal place to shake something down. One day, I would like to experience that in person.

Well if you ever make it to my location let me know and I will hook you up! You might just have a blast!

[Desertduler]

https://www.youtube.com/watch?v=IXRLfv7lMnc

I ran five gallons of fuel through this engine today as hard as I could run it and it never missed a beat. My best lap times were when I drove smooth and took advantage of the new powerband that the engine has now. Not too bad for a engine that is intended for use in a utility snowmobile.Kinda like putting lipstick on a pig.

[itsid]

well if that's putting lipstick on a pig... I'd kiss that pig

'sid

[Desertduler]

Good to see ya back!

[landuse]

Yup...it looks like the kart is working

[Desertduler]

Originally Posted by landuse

Yup...it looks like the kart is working

Thanks! I am really happy with it now.

[Desertduler]

This is a 20 gram hollow slug weight inside this wrist pin that I have made for another engine of mine that needed the piston weight to what it was before machining the windows in the skirt.

[Poboy kartman]

Originally Posted by Desertduler

This is a 20 gram hollow slug weight inside this wrist pin that I have made for another engine of mine that needed the piston weight to what it was before machining the windows in the skirt.

Wow....that's a good idea! !! Genius really! !!!...... No machining needed really....and.....almost zero chance of it going anywhere it can do any damage.....

You continue to impress my friend! !!

[Desertduler]

Well I don't know about genius my friend by any means! I made this slug as to have a .002 press fit and I have three small grooves in the outside diameter that are filled with 638 Loctite retainer compound and I have the slug pressed dead center in the wrist pin and I made sure that the wrist pin diameter did not swell as to cause a problem. This would be easier than balancing the crank for the reduction in piston weight if it were to cause a problem.