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bgreen(at)bimi.org
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 Posted: Thu Dec 05, 2013 4:59 am Post subject: Kolb-List Digest: 8 Msgs - 12/04/13 |
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Skid: Have you given any thought to a Great Plains VW engine for you plane? The 2180 with re-drive should give you 100 hp for take-off and about 70-80 for cruise.
It is already beefed up in the crank and other areas of significance.
I do not want to obligate the folk at GPAS by stating a price but my brand new engine built by Steve at GPAS with re-drive was less than what the Rotax two stroke, two cyl was.
My engine is a four cyl. four stroke air-cooled with dual ignition,starter, alternator, etc.
Just a thought.
Bob Green
MKIIIX
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rowedenny
Joined: 09 Mar 2008
Posts: 338
Location: Western PA
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| Posted: Thu Dec 05, 2013 9:04 am Post subject: Kolb-List Digest: 8 Msgs - 12/04/13 |
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Bob,
I have a local friend, "Roger Sell" who is nearing completion of an Xtra with the GP/Valley Engineering set up. Very nice indeed. Should be a hot performer. Really looking forward to trying it out next summer.
My fuselage is 1991 vintage and is not modified for the VW engine. I am also a weight freak and am pretty confident I'll keep my weight within 10 pounds of the 475 pounds my bird weighs with it's current powerplant. The 85+ hp the 670 offers should be more than ample to hurl my light Mk-3 into the sky at a satisfying clip. It also should make 65-70 hp in the lower 5k rpm range which will give me a solid 65-70 mph economy cruise. As I am doing some of the work myself, reusing my instrumentation and propeller, and starting off with the stock single ignition, I should be able to keep the total close to $5k. If it's over that, wifeys going to crap! Ok, she'll crap even if it's under. 
Anyhow, this option offers me the easiest path to a 85hp and should it not work out, swapping back to my 2SI will be a one day project. Can't beat that with a stick.
Dennis "Skid" Rowe
Mk3, 690L-70, Leechburg, PA
| Quote: | On Dec 5, 2013, at 7:58 AM, Bob Green <bgreen(at)bimi.org> wrote:
Skid: Have you given any thought to a Great Plains VW engine for you plane? The 2180 with re-drive should give you 100 hp for take-off and about 70-80 for cruise.
It is already beefed up in the crank and other areas of significance.
I do not want to obligate the folk at GPAS by stating a price but my brand new engine built by Steve at GPAS with re-drive was less than what the Rotax two stroke, two cyl was.
My engine is a four cyl. four stroke air-cooled with dual ignition,starter, alternator, etc.
Just a thought.
Bob Green
MKIIIX
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