Race 86 Czech Mate Engine Mods

[boomtown]

Super excited to see Smoot and the the fastest little Yak come back. It's been a few years so I was hoping someone with knowledge could share what powerplant mods she has under the cowling. P&W 2800 hung on the front with custom prop we know. What other Secret Pete stuff is hiding in there?

[RAD2LTR]

I don't know that I've ever seen a really in depth rundown of what all has been done to CM's R2800. It might be an interesting read if someone knows.

Will

[GeeBeeZ1931]

I don't know that I've ever seen a really in depth rundown of what all has been done to CM's R2800. It might be an interesting read if someone knows.

Will

Several years ago I asked and was told they just dropped in a 2500 HP factory engine. After all they are the greatest American piston aircraft engine you can get. I had wondered why not the 2800 HP one but believe I was told it wasn't needed. I don't remember if this was Bob Yancy that told me this or Sherm? However it was before its top qual speed of 464 not so long ago. This is a several years old memory so maybe not perfect. However with a 464 mph lap speed I think that means they can hit 500 or more on the straight shots and brothers and sisters that aint hay for a little modified trainer. If some body can please refresh my memory I can remember they took 2nd Gold once or twice and can't remember if they ever got 1st. Seems like one of these was because of pylon cut(S) but still got the well earned position.

[Race5]

They are limited by prop more than engine. The engines they use are just high quality rebuilds with an eye toward not blowing them up instead of making the most power possible.

[boomtown]

They are limited by prop more than engine. The engines they use are just high quality rebuilds with an eye toward not blowing them up instead of making the most power possible.

Do they run ADI?

[Race5]

Do they run ADI?

Yes. They do run ADI.

[marada mx3]

Wasn't it said that CzM was more than a handful to control back when it had the R2000? Seems like it was always on the ragged edge, which is cool and all. This thing must be like a sprint car in the air!

[supercub]

Every time it lands, I hold my breath !!

[RAD2LTR]

Wasn't it said that CzM was more than a handful to control back when it had the R2000? Seems like it was always on the ragged edge, which is cool and all. This thing must be like a sprint car in the air!

It has never raced with an R2000. When Bob Yancy brought it to Reno the first time, it had the firewall forward off his Corsair with a different, much shorter prop.

Yes its always been a handful, very pitch sensitive, essentially zero forward visibility on takeoff or landing, and must take off and land from a 3 point attitude so the prop doesn't strike.

Will

[BellCobraIV]

It has never raced with an R2000. When Bob Yancy brought it to Reno the first time, it had the firewall forward off his Corsair with a different, much shorter prop.

Yes its always been a handful, very pitch sensitive, essentially zero forward visibility on takeoff or landing, and must take off and land from a 3 point attitude so the prop doesn't strike.

Will

Yes its always been a handful, very pitch sensitive, essentially zero forward visibility on takeoff or landing, and must take off and land from a 3 point attitude so the prop doesn't strike.


Very much like Rare Bear Bob and Lyle played sit in each other's cockpits at an event one time. Lyle thought that if improvements could be made to the wing (which eventually happened) the YAK would make a real great racer.


John