FireHead

Every bike I have ever had out at Sand Lake has been checked at one time or another........ If you are going out there you probably need to make sure you are atleast close to being legal or can convince the officers that there test procedure is flawed (long story). :cool:

Centered please.. :cool:

Ha Ha (Nelson from the Simpsons) :laugh:

I have a run a few higher than that without too much trouble.............. though there were some custom crankshafts involved. :geek:

I found pretty much the same thing that you did.....

Girls or boys? :ermm:

Word. :geek:

They are a good product at a great price. Their customer service is great with the exception of a one of their eBay based distributors. I would not hesitate to buy something directly from them. :thumbsup:

Just to give Brandon a hard time............ CMM = Cajun Monkey Mattress (not really) :biggrin:

You may want to define CMM for the masses......... (I have found the same thing by the way. I figure out my ratios in a Catia model. ) :geek:

I heard you where an XS when you go out on the town........ maybe that's normal when you shop at the GAP. :ermm:

Has anyone asked where he rides in the sand in PA?

Isn't it a little cold to be going bare foot in Rock Springs this time of year?

They are not round for a few reasons: 1.) If piston were to be round, then go through heat cycling, it would probably seize due to the piston expanding and contracting in a slightly non-uniform manner. 2.) It allows the rings to do their job in a circular manner. 3.) It also helps abate wear on the piston due to the thrust. 4.) It allows for oil to linger on the cylinder walls. Interstingly enough, a piston doesn't even have to look round to be a piston. Oval pistons and eliptical pistons pop up in OEM's designs every once in awhile.

That's actually not too bad of pricing for a custom two stroke piston.......... (which I know seems like alot of money for normal folks). :thumbsup:

There is a definite upside to designing your own forging and then designing your manufacturing process around it. However, designing enough flexbility into the system to accomodate any future changes without having to change the forging or the tooling. Mahle won't talk to you on the production side of things for less that a few thousand pieces, but Federal Mogul and Eaton are the same way. Mahle has a prototype shop that will do onesy-twosey stuff for alot more money than it's worth, but you have to contact a totally different group of folks within Mahle for that. Wiseco is probably a better place to go for what you're looking for....... :geek:

Most mill-turns can run slow enough to get the job done. It's definitely not the fast way to do things, as an eccentric lathe would be the large quantity manufacturing solution. It's not so much about holding OD tolerance, as it is about holding TIR. Tool post grinding on a lathe is always fun to do and can be done with fairly high accuracy if the operator is skilled enough. There are not all that many piston manufacturers out there these days. Most of the smaller companies are highly specialized or are in the process of going out of business. For special one-off stuff, Wiseco, Mahle, JE, and CP all have good proto-type departments. The owner of CP and I are pretty good friends, so I can get stuff done there easier than me doing it myself, but I don't think CP will touch a two stroke piston project from the general public. :geek:

You just need to make more money............... :biggrin:

Word. FEA is probably necessary.......... and cam turning the pistons is 100% necessary. As most folks know, pistons are not round, they are made of a series of concentric elipses, which requires a cam turning machine or a turn-mill to manufacture them properly. I have designed and manufactured more racing pistons than I want to remember, and because of that experience I can tell you that there are some major reasons why there are not many folks out there who make pistons. :laugh:

I am also interested in the process this guy will use to make the pistons............ As some of us on here know how to make pistons and understand the huge equipment investment required to make real piston and not something that just looks like a piston................ I call BS on this guy without hearing anything further. :biggrin:

The FMF cylinders are actually just T-Rex cylinders with FMF's name on them........ :thumbsup:

I have given straight answers on this subject in the past................... Some people just don't like the technically correct answers.

Is this thread really old? I am confused..............

I have the cable and everything............. He can come down and I'll flash in whatever he wants. :geek:

There's an easy solution to that issue............ just make more money. Then, you won't have any problems. :cool: