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roncarolnikko(at)hotmail.
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 Posted: Sun Oct 01, 2006 5:49 pm Post subject: VW redrive results |
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I got 541KF back in the air after the first engine failed. This time I had
redesigned baffles, and a CHT guage. The oil temp read the same 190-200
degrees, but the new CHT read 450-550 degees. Thinking that the engine was
about to melt again I gave up and called Steve Bennet at Great Plains. His
suggestion was to read the temp from under a head bolt instead ot the spark
plug. The new location shows a happy 250-275 degrees on the side I changed,
and 500-550 on the other side still under the plug. With about 3 hours on
this engine now I am beginnig to trust the installation.
That was the good part. The downside is that I still don't have the GSC
prop dialed in. I also feel that the 1915cc engine is tooooo small. 300'
takeoff roll at sea level, 500fpm climb, 65~ mph cruise, 78~flat out at 60 F
and 850 lbs. I know it's the Speedster, but I need better than that. I
hope to test this motor/prop for the first 40 hours or so then spring for a
stroker crank. 2275 cc should do the trick nicely, but I was hoping to keep
the fuel burn down. Now that I can moniter the engines condition better I
may start over on the prop selections as I believe the Ivo was the one that
gave 370lbs of thrust. I thought it was responsible for my overheating
problems.
Ron NB Ore 1915cc VW 1.6:1 redrive MK IV Speedster 66" GSC/ 72" Ivo
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dave
Joined: 22 Sep 2006
Posts: 1382
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dave
Joined: 22 Sep 2006
Posts: 1382
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| Posted: Sun Oct 01, 2006 6:01 pm Post subject: VW redrive results |
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Ron, I should have added what is your prop speed now with Redrive ?
I have found that GSC props like to run 2000 to 2600 rpm ...........
How many HP is your vw putting out ? I bet it sounds pretty good.
Dave
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roncarolnikko(at)hotmail.
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| Posted: Sun Oct 01, 2006 7:30 pm Post subject: VW redrive results |
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Prop rpm ~2000 I have not dynoed the motor, but i'll bet it's not over 60
hp at these rpms. Sounds really good even when you pull the throttle for
decent. Solid idle and smooth. I have built 1915cc motors that dynoed 115
hp, but they had big cams and carbs. If I build a 2275 stroker it will have
a bigger cam and intake. Playing with a zero time Revmaster in the garage
though so I may have to weld up another mount. (It's paid for) Ron NB Ore
[quote]From: "Dave" <dave(at)cfisher.com>
Reply-To: kitfox-list(at)matronics.com
To: <kitfox-list(at)matronics.com>
Subject: Re: VW redrive results
Date: Sun, 1 Oct 2006 22:00:45 -0400
Ron, I should have added what is your prop speed now with Redrive ?
I have found that GSC props like to run 2000 to 2600 rpm ...........
How many HP is your vw putting out ? I bet it sounds pretty good.
Dave
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roncarolnikko(at)hotmail.
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| Posted: Sun Oct 01, 2006 7:30 pm Post subject: VW redrive results |
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Prop rpm ~2000 I have not dynoed the motor, but i'll bet it's not over 60
hp at these rpms. Sounds really good even when you pull the throttle for
decent. Solid idle and smooth. I have built 1915cc motors that dynoed 115
hp, but they had big cams and carbs. If I build a 2275 stroker it will have
a bigger cam and intake. Playing with a zero time Revmaster in the garage
though so I may have to weld up another mount. (It's paid for) Ron NB Ore
[quote]From: "Dave" <dave(at)cfisher.com>
Reply-To: kitfox-list(at)matronics.com
To: <kitfox-list(at)matronics.com>
Subject: Re: VW redrive results
Date: Sun, 1 Oct 2006 22:00:45 -0400
Ron, I should have added what is your prop speed now with Redrive ?
I have found that GSC props like to run 2000 to 2600 rpm ...........
How many HP is your vw putting out ? I bet it sounds pretty good.
Dave
---
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