Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

How to get the most from a K&B .48 ?

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Old 10-29-2002, 05:31 PM
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BernieG
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Default How to get the most from a K&B .48 ?

I am finishing a Morris Hobbies Tomhawk, and have a K&B .48 for it. I am not sure the K&B will be good enough ! What "tricks" would you use to get the most speed possible from that engine ?

What should I expect on which prop ? Any advice on tuned pipe or other exhaust system are welcome.

If you think I should get another engine, which one and why ? Keeping in mind that the nose of the plane is built and I don't want to do big surgery there.....

Was thinking maybe to get a Jett .50, but I am not sure it worth it. Convince me, if you can.... ;-)

Bernard
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Old 10-29-2002, 11:26 PM
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Ross Airforce
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Default How to get the most from a K&B .48 ?

I have had a K&B 48 for about 3 years. It is in a "Sig somethin extra".
I did the following to it to get outstanding performance:
1. Remove muffler baffle.
2. Use a perry fuel regulator pump.
3. Use an 11 inch prop( smaller prop will not absorb power)
4. Use high nitro fuel.(also runs great on 10%)
5. Balance your prop.

Be careful to rigidly mount the needle valve assembly.
Also use cushioning material to mount the tank or add a tiny amount of "armorall" to the fuel to supress foaming.
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Old 10-30-2002, 12:16 AM
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Default How to get the most from a K&B .48 ?

Originally posted by Ross Airforce
I have had a K&B 48 for about 3 years. It is in a "Sig somethin extra".
I did the following to it to get outstanding performance:
1. Remove muffler baffle.
2. Use a perry fuel regulator pump.
3. Use an 11 inch prop( smaller prop will not absorb power)
4. Use high nitro fuel.(also runs great on 10%)
5. Balance your prop.

Be careful to rigidly mount the needle valve assembly.
Also use cushioning material to mount the tank or add a tiny amount of "armorall" to the fuel to supress foaming.
Thanks, make sense. When you say "outstanding performance", do you have some numbers, so that I could compare mine to "something"?

Bernard
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Old 10-30-2002, 06:29 AM
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Ross Airforce
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Default How to get the most from a K&B .48 ?

Sorry, I have never tached it. It pulls the SE anyway you aim it.
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