Tiekie,
Not sure what Paul meant by "a constant speed" but it sounds like you
are unhappy with the performance of the KR (too little power).
Options:
1. Install a bigger engine
2. Reduce the weight of the airplane. Probably not an option.
3. Turbo the one installed.
Concerns: Over heating and / or over-stressing the engine to failure
Fixes: Install an oil cooler or a second oil cooler if you already have
one. Install a plenum for better cylinder cooling or otherwise modify
the cowl. You would also want a positive "boost" control so you don't
over-boost. The boost is most effective at full throttle and/or
altitude as below full throttle setting you can control engine output
with throttle setting and at altitude where you can keep the manifold
pressure at "sea level" or greater for maximum output.
There is no such thing as a free lunch. Calculate the cost and effort
of each option and see which one wins. Of course, the cheapest option
is to fly it as it is.
Larry Flesner
==================================================================================================
On 8/10/2025 3:19 PM, Paul V via KRnet wrote:
I have heard that tp benefit from a turbo you would need to have a
constant speed. Because your max RPMs don’t change you’re still
limited on RPM.
Paul
Sent from my iPhone
======================================================================================================
On Aug 10, 2025, at 1:36 PM, tiekie bernardus via KRnet
<[email protected]> wrote:
Hi Everyone.
Im thinking to install a turbo in my latest KR2 that i have
completed. Im very hesitant to do that, as im sure i will run into
oil cooling problems as the engine have to work harder therefore more
heat is generated.
Any advice would be appreciated whether to go that root or not. Im
sure in the long run i will run into problems with the engine.
Best Regards
Tiekie
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