ESE's works engine tuner

[jamathi]

Unlikely i could explain but a picture might help?
Okay its clearly not to scale and a pretty lazy ass attempt at a picture.
Attachment 328650Attachment 328651
It would clearly only work with an engine that had no ancillaries on the disc side of the crankshaft.
Thus the clutch and the ignition would have to be on the other side.
Throw in Flettners variable inlet port timing as well.

It would cause a lot of friction....

[husaberg]

It would cause a lot of friction....

likely i am sure it would but in my defense so do bevel gears.
Is there a rule of thumb for disc friction?
I considered some of those narrow thrust bearings like these.

As it sealed on the outer oring housing i thought it might get away with a little leak arround the disc as it can't go anywhere or is this a big issue as well?
Anyway making it work is the R&D departments issue, i work in the silly ideas department

[eldog]

Never finished.... is actually my middle name

Come on, pull the other one.

you can do it.
choose something and tackle it until you finish.

dont be like me.

[Peter1962]

Unlikely i could explain but a picture might help?
Okay its clearly not to scale and a pretty lazy ass attempt at a picture.
Attachment 328650Attachment 328651
It would clearly only work with an engine that had no ancillaries on the disc side of the crankshaft.
Thus the clutch and the ignition would have to be on the other side.
Throw in Flettners variable inlet port timing as well.

Thx for the explanation. Very interesting. And I hope Flettner is hearing your hint. By the way, I think his idea for a variable inlet disc is a marvel.

[Yow Ling]

Instead of driving a disk valve off the end of the crank or the cross shafts like the RSA, would it be possible to put the disk on the end of an AC 3 phase servo, and run it off an encoder on the crank, you could locate it anywhere, front back top bottom side etc 15000 rpm might be a bit out of the reach of the servo but 3 or 4,000 is doable just put a 1:4 gear train on it. How much power does the disk take to run. Needs a good high voltage winding to power the drive, an added bonus would be variable timing

To give you more of an idea what Im talking about there is a demo video on this page https://www.teknic.com/products/clea...-servo-motors/ watch from about the 4 minute mark will give you an idea of the accuracy and speeds etc.

All this is everyday stuff in the CNC world

[Flettner]

Instead of driving a disk valve off the end of the crank or the cross shafts like the RSA, would it be possible to put the disk on the end of an AC 3 phase servo, and run it off an encoder on the crank, you could locate it anywhere, front back top bottom side etc 15000 rpm might be a bit out of the reach of the servo but 3 or 4,000 is doable just put a 1:4 gear train on it. How much power does the disk take to run. Needs a good high voltage winding to power the drive, an added bonus would be variable timing

I guess my variable housing has a servo anyway. just not a high speed one.

[husaberg]

Instead of driving a disk valve off the end of the crank or the cross shafts like the RSA, would it be possible to put the disk on the end of an AC 3 phase servo, and run it off an encoder on the crank, you could locate it anywhere, front back top bottom side etc 15000 rpm might be a bit out of the reach of the servo but 3 or 4,000 is doable just put a 1:4 gear train on it. How much power does the disk take to run. Needs a good high voltage winding to power the drive, an added bonus would be variable timing

To give you more of an idea what Im talking about there is a demo video on this page https://www.teknic.com/products/clea...-servo-motors/ watch from about the 4 minute mark will give you an idea of the accuracy and speeds etc.

All this is everyday stuff in the CNC world

At highspeed it doesn't even have to rotate at all. As long as it stops in the open position. Its only needed at lower speeds isn't it?

[Yow Ling]

At highspeed it doesn't even have to rotate at all. As long as it stops in the open position. Its only needed at lower speeds isn't it?

Very very good point !

[F5 Dave]

Rotate? Why not just open and close guillotine?

[Yow Ling]

Rotate? Why not just open and close guillotine?

Health and Safety prevent us from doing that

[husaberg]

Very very good point !

with 8000 odd posts i had to have one once, eventually.

Rotate? Why not just open and close guillotine?

Thats a step away from Diesel talk and poppet valves

[Tim Ey]

...
people were making up straight cut primaries for the rd and rz using stock yamaha parts
...

I am at the moment working on my Aprilia RS250 (= Suzuki RGV engine). I allready came to the clue that Suzuki uses the same design for clutch parts on RGV 250, GT250, GT380, DR400... So I modified the original clutch to one frictionplate more using a few GT250 steel plates.
Also the inner hub of the clutch has the same dimensions in these bikes - except for the height. Here the RGV is highest.

I wonder if anyone has done the same thing and may tell me if there is an other Suzuki which straight cut primary gears suit the RGV?!
Cheers to everyone
Tim

[husaberg]

I am at the moment working on my Aprilia RS250 (= Suzuki RGV engine). I allready came to the clue that Suzuki uses the same design for clutch parts on RGV 250, GT250, GT380, DR400... So I modified the original clutch to one frictionplate more using a few GT250 steel plates.
Also the inner hub of the clutch has the same dimensions in these bikes - except for the height. Here the RGV is highest.

I wonder if anyone has done the same thing and may tell me if there is an other Suzuki which straight cut primary gears suit the RGV?!
Cheers to everyone
Tim

No idea re the clutch and primaries for the RGV
But i have seen a SP or F3 RGV parts list posted on the net, have you tried to cross reference the parts numbers?

Murphys law the one you want to see iis the blurry one.
Vincent Crabtree did a nice piece on using a RG250 crank in one for a 54mm stroke with some Snowmobile cylnders that are a bolt on.
They shared the same primary gear. or the spline from memory (RG250)
Lozza (2Tinstitute)brought a crank to do the conversion but i never heard anymore.
The best way to find what clutch parts fit others is to cross reference EBC cataloges and such like.
Honda and Suzuki seem to use the same plate parterns and baskets ove ran over again
For instance pretty much all the up to 250 hondas share 2 types of plates.

[Neal]

I am at the moment working on my Aprilia RS250 (= Suzuki RGV engine). I allready came to the clue that Suzuki uses the same design for clutch parts on RGV 250, GT250, GT380, DR400... So I modified the original clutch to one frictionplate more using a few GT250 steel plates.
Also the inner hub of the clutch has the same dimensions in these bikes - except for the height. Here the RGV is highest.

I wonder if anyone has done the same thing and may tell me if there is an other Suzuki which straight cut primary gears suit the RGV?!
Cheers to everyone
Tim

The tunning works do trick clutch and primary gear parts

[Martin1981]

Jan and/or Frits,

can you please tell me the Big End Pin and Crank Web Diameter of the RSA 125?

Thank You!