Tegheim - Home made 4 Rotor Wolvo project
Thread Starter
Senior Member
Joined: Nov 2003
Posts: 533
Likes: 3
From: Sweden
Hello guys!
This is embarassing, but I havn't done anything for several months.
When the summer-period comes to sweden, theres trackdays, motocross and other fun stuff to do. The car and rotary-interest has been a winter-project for me past years, and sadly for you guys, it could be so this year also. But as soon as the weather sucks, I'm back in the workshop to hopefully complete the base of the engine, and get some wheels on the new chassi.
It means alot that you're hanging in here and waiting. I will return, no doubt!
My friend completed his BMW M3 E36 N/A-build last month. About 400hp and alot of sweets under the hood, such as carbon-intake for example. runs on E85-fuel, and sounds really nice for an piston-car
This is the best I can get you tonight
http://www.youtube.com/watch?v=rjgnNDfiTBQ
Stay tuned!
The Mooseville Performance will return hard!
This is embarassing, but I havn't done anything for several months.
When the summer-period comes to sweden, theres trackdays, motocross and other fun stuff to do. The car and rotary-interest has been a winter-project for me past years, and sadly for you guys, it could be so this year also. But as soon as the weather sucks, I'm back in the workshop to hopefully complete the base of the engine, and get some wheels on the new chassi.
It means alot that you're hanging in here and waiting. I will return, no doubt!
My friend completed his BMW M3 E36 N/A-build last month. About 400hp and alot of sweets under the hood, such as carbon-intake for example. runs on E85-fuel, and sounds really nice for an piston-car
This is the best I can get you tonight
http://www.youtube.com/watch?v=rjgnNDfiTBQ
Stay tuned!
The Mooseville Performance will return hard!
Thread Starter
Senior Member
Joined: Nov 2003
Posts: 533
Likes: 3
From: Sweden
Well, the year goes againt darker times here in Sweden. Luckily that means more time inside the garage, workshop and with the computer.
Last week I got Solidworks 2011, and startet tonight to practice. It's not much, but I'm satisfied with the result.
The CAD shows my 184mm Tilton clutch. Soon, there will be blo... cnc-****?
Regards Tegheim
Last week I got Solidworks 2011, and startet tonight to practice. It's not much, but I'm satisfied with the result.
The CAD shows my 184mm Tilton clutch. Soon, there will be blo... cnc-****?
Regards Tegheim
Thread Starter
Senior Member
Joined: Nov 2003
Posts: 533
Likes: 3
From: Sweden
Thats so cool.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
Thats so cool.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
I believe someone has done a 4 rotor like you describe, 4 rotors opposed in sets of two. I think I saw a video of a drag car. It may be in the 12 rotor thread elsewhere in this section.
Junior Member
Joined: Aug 2011
Posts: 27
Likes: 0
From: Adelaide
Are you going to be using the standard stationary gear tooth profile? or are you going to be re-designing the tooth profile?
My understanding is that the standard 13B tooth profile makes the rotors "dance" on the gears at high RPM, which makes them touch the side plates.
I was speaking to an engineer who was saying that a "updated" tooth profile would make the rotors more stable on the gears. It would also "soak up" less horsepower, which also makes less heat.
How have you arranged your rotor phasing?
I would have thought that with 4 rotors, you would be able to arrange them to counter weight each other, and not need the counter weights on each end of the shaft? Or would that be a 6 rotor engine? (Thinking that a 4 piston motor is only single phase balanced, where as a 6 cylinder is second phased balanced (Im very tired atm, i think i got my terms wrong))
My understanding is that the standard 13B tooth profile makes the rotors "dance" on the gears at high RPM, which makes them touch the side plates.
I was speaking to an engineer who was saying that a "updated" tooth profile would make the rotors more stable on the gears. It would also "soak up" less horsepower, which also makes less heat.
How have you arranged your rotor phasing?
I would have thought that with 4 rotors, you would be able to arrange them to counter weight each other, and not need the counter weights on each end of the shaft? Or would that be a 6 rotor engine? (Thinking that a 4 piston motor is only single phase balanced, where as a 6 cylinder is second phased balanced (Im very tired atm, i think i got my terms wrong))
Thread Starter
Senior Member
Joined: Nov 2003
Posts: 533
Likes: 3
From: Sweden
Thats so cool.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
The winter is soon here
Among other things, I believe that would create greater strain on the eccentric shaft. Equally distributed rotor position should reduce shaft flex and lend itself to higher rpms. Also, this will sound way cooler.
I believe someone has done a 4 rotor like you describe, 4 rotors opposed in sets of two. I think I saw a video of a drag car. It may be in the 12 rotor thread elsewhere in this section.
I believe someone has done a 4 rotor like you describe, 4 rotors opposed in sets of two. I think I saw a video of a drag car. It may be in the 12 rotor thread elsewhere in this section.
Are you going to be using the standard stationary gear tooth profile? or are you going to be re-designing the tooth profile?
My understanding is that the standard 13B tooth profile makes the rotors "dance" on the gears at high RPM, which makes them touch the side plates.
I was speaking to an engineer who was saying that a "updated" tooth profile would make the rotors more stable on the gears. It would also "soak up" less horsepower, which also makes less heat.
How have you arranged your rotor phasing?
I would have thought that with 4 rotors, you would be able to arrange them to counter weight each other, and not need the counter weights on each end of the shaft? Or would that be a 6 rotor engine? (Thinking that a 4 piston motor is only single phase balanced, where as a 6 cylinder is second phased balanced (Im very tired atm, i think i got my terms wrong))
My understanding is that the standard 13B tooth profile makes the rotors "dance" on the gears at high RPM, which makes them touch the side plates.
I was speaking to an engineer who was saying that a "updated" tooth profile would make the rotors more stable on the gears. It would also "soak up" less horsepower, which also makes less heat.
How have you arranged your rotor phasing?
I would have thought that with 4 rotors, you would be able to arrange them to counter weight each other, and not need the counter weights on each end of the shaft? Or would that be a 6 rotor engine? (Thinking that a 4 piston motor is only single phase balanced, where as a 6 cylinder is second phased balanced (Im very tired atm, i think i got my terms wrong))
Thats so cool.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
How did you determine the best position of the rotors relative to each other?
as in, I see that they're all going to be in different parts of their respective housings at any given time. Why not do like a 4 banger and have 2 up and 2 down? Mostly just curious.
awesome thread. and I can't wait for winter lol.
Rotors ignite at every face.
You want to evenly distribute the ignition events.
limey lurker
Joined: Feb 2010
Posts: 59
Likes: 0
From: Boston, UK
Tegheim, great work again mate
Thread Starter
Senior Member
Joined: Nov 2003
Posts: 533
Likes: 3
From: Sweden
Junior Member
Joined: Aug 2011
Posts: 27
Likes: 0
From: Adelaide
Love the sound of that thing.
From what i remember reading about that car, the tub was junk by the end of the race - but the motor was still running strong and could have run another 24 hour race without drama (estimated by mazda engineers when they stripped the motor down and found between 20 and 30% wear on most parts - IIRC the apex seals were only 16% worn)
