Looks like an interesting design. I particularly like the raised pin, and boxed/strutted style of piston. I can only imagine how light the final product(rod+piston+bolts) will be.

 

Shooting for less than 500g....piston AND rod.

 

I totally agree about the money thing and i know the stuff that they should is def older and out of date for them, but is there any way for it to translate into our market more?

I know most people now are pretty much pushing the limits of design when it comes to making power, but with Masters new design for the masses we could def take efficiency up a huge notch? not sure if that makes sense but, being the little guy I would really like to learn more on the subject!

 

nice read, subscribed...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe &raquo;</TD></TR><TR><TD CLASS="quote">

Would you like to see the G-Code?

This is benefit of working with a real deal CNC guy who has aerospace contracts comes in handy.

Airbus fo da win!!!!</TD></TR></TABLE>
Sure! Got it handy?

Having the right machine and tooling is good. I find having a great apps engineer is better. I was just curious who was milling these on what kind of technology and materials.

I'm just a lowly peon, privileged to work for North Americas largest machine tool importer, so I get to play with some great machines and test cuts frequently. We supply machines to all the leading aerospace, defense, electrical, and motorsports venues. Most job shops have contracts for several vendors if they're "in the biz", so it seems like you have a good machinist worked out.

Thanks,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Cpt Ben &raquo;</TD></TR><TR><TD CLASS="quote">Looks like an interesting design. I particularly like the raised pin, and boxed/strutted style of piston. I can only imagine how light the final product(rod+piston+bolts) will be.</TD></TR></TABLE>


I agree the boxed forged is better, but you can't really use a boxed piston with an aluminum rod because the rod is too big on the small end, it will hit the boxed portion when the rod has any angle too it.


There's also a comment the robert made about not being to worried about the heat in the rod because the piston takes most of it.
I agree that the piston does take a lot of the heat , but then the heat travels through the pin and down the Rod, what's at the bottom of the rod? your bearing and then the oil.

I feel this is way overlooked OIL temps. I have seen a lot of bearing failure's on on motors and when i check them out most of the time the oil is like water and has lost it's viscosity.


Sorry if this is too off topic but it seem this is the only post where there's anyone who would understand what i'm talking about.

 

Yep, there's heat transfer to the rods and bearings and oil. That's why it's important to setup the clearances (vertical and side rod) to have good oil flow. In road race if the oil temps are rising lap after lap you got problems.

We've got a couple things to increase cooling of the rods and pistons. Kinda cool to have full design freedom, only being limited by material choice and "packaging" of the parts in da motor.

Just keep in mind that the ultimate wieght will depend on desired durability as we can make parts paper thin but we ain't racing on the gram scale.

 

what kind of power goals is this setup designed for?

Mostly over my head, but everything looks awesome

 

400whp all motor and 1200whp FI.

 

MOTU,
Apologies if this is a newb question. Not having the engine buidling experience that yourself and some of the posters in this thread have I was curious as to why the rods do not have more conventional H-beam/I-beam design. In fact you removed material (concave radius corners) where compression and tension would be the highest in a bending situation. Also I dont think you've answerd what FEA software you plan on using? I am very interested in this so bump to find out.

 

H-beam is heavy and I-beam has some issues with stress localization in tension.

I am not going to give away too much but you if you want something to be as strong as possible it can't have tight radii.

 

thats good stuff MOTU, some food for thought for me.. yum yum!

 

More experimental pics.

Final form will not look like this. Just eye candy for y'all..."Shock'n Y'all"

 

Just 2 ring it to help get rid of the oil spacer.

 

Nice piston drawing. Can you calculate the approximate weight from the volume? Care to share?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">Just 2 ring it to help get rid of the oil spacer.</TD></TR></TABLE>

Yep

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nikos &raquo;</TD></TR><TR><TD CLASS="quote">Can you calculate the approximate weight from the volume?</TD></TR></TABLE>

Of course, that's the beauty of CAD - know da volume and know da density and booo-ya-ka, you got weight.

 

What no center of mass, moments of inertia from the center of mass and from the principal axes of inertia?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FST GSR 1 &raquo;</TD></TR><TR><TD CLASS="quote">principal axes of inertia?</TD></TR></TABLE>

Please tell me the significance of this?

 

It's significant in the model needs to be created correctly around the pricipal axis , otherwise all the moment numbers are incorrect.

Honestly, I was just hastling you because I know SE a few years ago didn't have the capabilities for any of those calculations or direct FEA. Maybe UGS changed that, I don't know.

 

Coo. I am focusing on a couple things. One is to maintain ring seal on the ring land.

Perhaps you guys will be part of something cool becaue this "show and tell" will become real. Tired of post like Jun3 or Toda C, Pro2 or Pro3, or ACL v. OE, LOL.

SOMETHING REALLY EXCITING AND NEW.

 

For most design work, Ansys is sufficient. If this part were going to see any sort of strong non-linearity ie material, strain, etc. then I would suggest abacus. But then you need a damn PhD in FEA to make it work correctly, lol.

Non-linearity and engine design...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe &raquo;</TD></TR><TR><TD CLASS="quote">Coo. I am focusing on a couple things. One is to maintain ring seal on the ring land.

Perhaps you guys will be part of something cool becaue this "show and tell" will become real. Tired of post like Jun3 or Toda C, Pro2 or Pro3, or ACL v. OE, LOL.

SOMETHING REALLY EXCITING AND NEW.</TD></TR></TABLE>

x2^999999999999

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe &raquo;</TD></TR><TR><TD CLASS="quote">SOMETHING REALLY EXCITING AND NEW.</TD></TR></TABLE>

Thats honestly why I love my job. Keep us posted, maybe some more specific information as you get further would be cool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP &raquo;</TD></TR><TR><TD CLASS="quote">Looks like a beefed up TRX bike piston with an aluminum rod. Nice pieces. But the real problem with the B is air flow.</TD></TR></TABLE>

The K and B series heads Can flow the same CFM

with valves that are close in size

The real problem with b series is Bore size / bore to stroke ratio