Does this look OK for cooling?
06-08-2005 | 01:10 PM
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From: Cabot,
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Does this look OK for cooling?
Here are some pics of my setup. Wondering what I can do to cool the motor a little more. I'm still getting temps around 220-225 after I taxi back and shut down (measured with Raytek gun and the "spit" method). I am burning 93 octane with 32:1 H1R oil. 2.5 gallons on the motor. Walbro carb, needles at L7/8 and H1.5. Getting around 6200 RPM with a Bambula 26x8 prop. Sounds rich in flight.
I would like to know what else I can do to lower temps. Retard the timing more? It's set at 6mm.
Thanks.
BTW... my RPMs went from 5,600 RPM with the Bisson Pitts to 6,200 with the Supersonic Pitts... WOW!!!
I would like to know what else I can do to lower temps. Retard the timing more? It's set at 6mm.
Thanks.
BTW... my RPMs went from 5,600 RPM with the Bisson Pitts to 6,200 with the Supersonic Pitts... WOW!!!
06-08-2005 | 03:05 PM
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RE: Does this look OK for cooling?
Looks good so far, keep running the engine as it is still breaking in. Try a 20x10 prop to see what happens until you get a bit more time on the engine. Keep us posted.
Thanks!
Thanks!
06-08-2005 | 04:28 PM
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RE: Does this look OK for cooling?
Ooops... typo in my original post. It's a ZDZ-80 and I am using a Bambula 26x8 prop right now... the recommended break-in prop. I fixed the original.
06-09-2005 | 08:23 PM
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RE: Does this look OK for cooling?
Mike,
I went out again today. It was close to 90 degrees. The high needle is still at the starting point (1.5 turns out) and timing is set at 6mm (measured from the side web). I'm getting 6,120 RPM with a Bambula 26x8 prop.
The temp between the top 2 fins, front of motor, immediately after shutdown is 230F. When I point the temp gun inside the cowl at the bottom fins it was close to 250F.
I don't get it... what am i doing wrong here? Why can't I get this thing to cool down a little? Others say that they are around 210 for temps.
Thanks again for your time.
I went out again today. It was close to 90 degrees. The high needle is still at the starting point (1.5 turns out) and timing is set at 6mm (measured from the side web). I'm getting 6,120 RPM with a Bambula 26x8 prop.
The temp between the top 2 fins, front of motor, immediately after shutdown is 230F. When I point the temp gun inside the cowl at the bottom fins it was close to 250F.
I don't get it... what am i doing wrong here? Why can't I get this thing to cool down a little? Others say that they are around 210 for temps.
Thanks again for your time.
09-15-2005 | 09:43 PM
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RE: Does this look OK for cooling?
Mr Sillyness,
you just gotta take that full baffling out of the front of your cowl. You have got huge exit hole/ area but no flow through the cowl. It looks as though no cooling at all for the crank case and exhaust. The top of your cylinder is in the air flow but nothing else.
Just how it looks to me.
Love Canada by the way.
Brad
you just gotta take that full baffling out of the front of your cowl. You have got huge exit hole/ area but no flow through the cowl. It looks as though no cooling at all for the crank case and exhaust. The top of your cylinder is in the air flow but nothing else.
Just how it looks to me.
Love Canada by the way.
Brad
