Twin dio possible?

[Majourlittle]

Speed

[eliteguy50]

What are your plans for cooling?

A great opportunity for an lc twin 2t dio.

[Carnie]

What are your plans for cooling?

A great opportunity for an lc twin 2t dio.

By lc im assuming, liquid cooled? If so, It's been done before. You might consult DioSpeedDemon from YouTube. I know he has posted a lot vids on his bike and I believe it's lc. He put the radiator under the front panel an cut out a rectangular hole and replaced it with a metal grate I believe.

[Majourlittle]

Liquid cooled is common, but a 2c2tlc has not been touched.

Last time i saw a water bore, it was beyond my budget. Do they have ones that are under $300?

[Majourlittle]

Digging this sucker out of the bin.

I spent a few nights knocking out a desing in Autocad Inventor and I think that I ahve all of the design kinks worked out... Prototype time!

I have an engine half on our CNC mill and I have pulled all of the bolt holes locations as well as the crank center and the dowel centers out to half-thou from each other. Next plan is to carve this thing out of machinst foam and determine if I can put something together.

I don't have much in the way of pictures, but I will post them up when they come.

[DaylightDies]

Absolutely insane!

[tru72]

[veedubh20]

in taiwan , has done build 2 cylinder dio motor.. not new...

[Majourlittle]

Im not doing this to be unique. I am atempting this for the * of it. I am also doing this on a cnc so that it can be rapidly replicated for others in the

I have an idea of changing the position of the intakes onto the front side of the motor. The theory is that it will pull a/f directly into the crank and will allow for a more compact design.

[LMH]

Nice, mate the intakes to the center section. How do you plan on connecting the cranks together? A coupler of some sort Id assume. I use to have a RZ500 LC, here in the states known as a RD500 LC and the cranks were 2 separate parts, its was a V4 design with upper and lower sets of reeds and 4 upper and lower carbs. Really neat bike I had bought brand new and kept through my 20s. Scary fast for "only" a 500cc.

[Majourlittle]

A little photoporn

Inital idea inspired by input from those that have forgotten more than I know...


Measuring for the critical areas and cutting some foam.









I have the location of all the mounting holes sorted. It all lines up like it should. I need to go through and sort out the way that it is machined out. I plan on splitting the inserted case in half and bolting it together in a four-piece sandwich. I will transfer this all back into autocad and work out the details as well as a machining mount.

Enjoy.

[tru72]

hehe well when you are ready i got some 49mm nicalsil bores for that !|
once get that tested , i want to try some 52.6 cranks 54 bores!

[Majourlittle]

Well it appears that grainger has 175mm long M6 double ended studs for (reasonably) cheap. I think that I may machine this whole thing as one piece. Wonder what a chunk of billet will cost!

[tazland001]

wow that looks kewl. I understand what you are doing but could never do anything like that. What a neat tool you got there. I got a wrench. lol.

No but really hats off. Cant wait to see more. The question is whos gonna ride that thing pegged.

Taz

[Majourlittle]

Alright, me and Mr. Graham bell sat down for a little brain-fart session and after banging my head against the wall for a few hours, this is what fell out.



Basically I will shave 8mm off of each case and then machine this SoB out of some 6061 and build me a motor. As you can see, the intake ports are on the front of the motor and feed directly into the crank... I sized the opening to be 10% of a 28mm carb opening. I think that is correct, but I need some input!

Input required!!!!

Progress will come as follows...

Stage one: Design
I will complete the design now and determine if this is suitable for building

Stage two: Tooling
I will collect the correct tooling and build this part out of foam as shown in the previous posts. This will allow me to work the kinks out.

Stage three: Save my pennies
You think that building a AF is expensive, try doing two, and add the cost of a chunk of AL.

Stage four: Magic
That's right, I cut it.

Stage five: Grow bigger balls