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PAW 55

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Old 11-02-2008, 01:54 PM
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Mr Cox
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Default PAW 55

Haven't seen many reports for the small diesels so I'll post some numbers that I got today.
We only had around 5°C today and I preheated the engine to get it started more easily.

Engine is a PAW 55 (0.033 cui) BB RC with exhaust collector and it hasn't seen much fuel yet. Ran it today with graupner 7x4 with 30% castor in the fuel and got top revs around 7500rpm and an idle around 2800rpm, sweet sound!

I'm thinking of putting this in an Eastbourne 1913 for some relaxed flying....
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Old 01-12-2009, 06:29 PM
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Default RE: PAW 55

Mr. Cox,
I've had a couple of these rc and with collector I remember getting 8,400 peaked with an apc 7x4 (I'll check my cheat sheets when I get home to confirm my memory)
Treven aka Chevy43 has what he calls his Magic PAW which spins the same prop nearing 10k[:'(] the ******* ! There seems to be a very wide range on these engines.
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Old 01-13-2009, 01:49 PM
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Default RE: PAW 55

Ok, thanks for those numbers. People rarely seem to post numbers from their little diesels, yet I find it a little easier to tune using a tach...

The APC would rev up more easily than the graupner, so I might very well be on par with the "regular" performance then.
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Old 01-15-2009, 05:23 AM
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Default RE: PAW 55

Here is what my note book says I got:

6x3.5 Cox 14,200

7x3 MAS 3,500-12,500

7x4 MAS 10,000

On a different "55":

7x4 MAS 3,500-9,900

7x3 MAS 3,500 - 11,100 Then with a 3" piece of exhaust tubing I got 3,200 - 11,200

8x3 MAS 2,500 -9,000

8x4 MAS 2,500 -8,000

Likes about 12" of exhaust tubing on the bigger props.

Runs about 20+ min on one oz. on the larger props.

Treven

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Old 01-15-2009, 04:16 PM
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Default RE: PAW 55

If I didn't see it w/ my own eyes, I'd call baloney[:@]
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Old 01-17-2009, 09:36 AM
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Default RE: PAW 55

Thanks for that complete table. That's some really good numbers for a 0.55cc engine!
Are you sure it's not an .049 ...?

Looks like I have some running to do on mine (at lower oil contents), I'll also put on a MAS next time for a better comparison.

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