Project: Lets confuse the hell out of everybody.

[unevolved]

Slightly less than 3 years:

http://www.motoiq.com/projects/mazda/project_mazda_miatabusa.aspx

But still.

[F34R]

3 years from the last update on that Busa swap. Some amazing work they did, I wonder what happened.

[willworkfore30s]

Made any progress on this?

[nokincy]

Don't know if you've seen but here's some motivation.. Er demotiviation.

http://www.motoiq.com/magazine_articles/articletype/articleview/articleid/1519/project-miatabusa-part-1-what-the-hell-we-are-thinking.aspx

[unevolved]

I think the intermediate gearbox is going to be a big hurdle to overcome, and while I hate to say it, possibly the thing that keeps this project from becoming a reality. Very few people have the background in power transmission to design a gearbox capable of reliably holding down 300+ hp in their garage, regardless of how simple it is.

Please don't view this as just another "you can never do it," it's just something I'd be scared of with what I know about engineering.

[petrolhead]

Why not use a V8 made from bike engines, one that already exists. They aren't cheap in think, but neither will this project of yours, be.

[LJ851]

Why would you not use sequential, dog engagement, 6 speed transmissions when you will be carrying them around anyway? Most people would give their left nut for a gearbox setup like that. Plenty of people have made 2 motorcycle 'boxes work in harmony in minis and super sevens.

Since you are going to have to make an intermediate gearbox to get both powerplants meshing anyways, an output flange exiting that 'box should be a relatively simple addition.

[Sagaris]

Seems silly, you could easily mirror a R1 block design to create a V8 have it CNC'ed, get a custom crank made up and done. While my option will proably be more expensive you know you will have a reliable system that has a good weight distribution and non of the harmoics issues.

While what you are trying for is achivable I think you are going the wrong way about it. But who cares what I have to say if you want to do it good luck. keen to see the end results

http://www.h1v8.com/page/page/1564764.htm

I completely agree, I believe I read somewhere on this site that the V8 busa block was about $25k.

[Sagaris]

As far as the clutch set up you would need it would have to just be very heavy basket springs as all the other clutch set ups for drag are centrifugal and only
Get stronger as they spin. Soo yeah.

Good to know, thanks!

[Massimo]

Seems silly, you could easily mirror a R1 block design to create a V8 have it CNC'ed, get a custom crank made up and done. While my option will proably be more expensive you know you will have a reliable system that has a good weight distribution and non of the harmoics issues.

While what you are trying for is achivable I think you are going the wrong way about it. But who cares what I have to say if you want to do it good luck. keen to see the end results

[2l2ltq]

As far as the clutch set up you would need it would have to just be very heavy basket springs as all the other clutch set ups for drag are centrifugal and only
Get stronger as they spin. Soo yeah.

[Keith M]

I watched a YouTube video a couple of years ago that had a spec racer, maybe a Stohr or Radical, at The Ring clocking a sub 7 minute lap with a dual motor setup like you are planning. I'm sure there is a write up on it somewhere.

[unevolved]

Yeah, I think linking the power from two engines rotating in opposite directions to a G260 in a reliable fashion will be your single biggest design challenge. There's precedent for just about every other process except that one.

It's definitely possible, though. If you've got the right combination of money and skill (and more of one can offset the other).

[SirWolfian]

I am fucking subbed,

[Sagaris]

There are a few possibilities for transmitting the torque to the G260 from both engines but as it is shown in the solid model, the thought would be to use a gear drive to connect the engines or an intermediate gear incorporated with the sprockets + chain drive. I would have to sketch it out to explain it clearly but I do have solid ideas for all possibilities, it is more a matter of narrowing down which will be most reliable and cost effective.