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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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 Posted: Sat Oct 02, 2010 7:10 pm Post subject: How well does the HKS work on a Kolb? |
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The thread concerning the HKS really intrigues me - my first ride in a Kolb was in a basic Twinstar, the one with the open front end and a single carb 46 horse 503, and it performed VERY well with that combination, but it was obviously much lighter than my MKIII.
I also got to fly a single carb (46 horse) 503 powered MKIII 2 up (Kolb used to offer that as one of the options) it was built very light, and it had all the performance of a Cessna 150... IOW it was a real dog.
Obviously there is a lot of difference between a 46 horse 503 and a 60 horse HKS, I suspect that possibly the 4-stroke torque of the HKS would make it not all that much less that the way my MKIII performed with the original 532, which was quite acceptable.
So my question is: Who out there is using an HKS, what are using it on, what does your airplane weigh, and how do you like it?
Richard Pike
MKIII N420P (420ldPoops)
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lcottrell
Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or
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| Posted: Sat Oct 02, 2010 7:51 pm Post subject: How well does the HKS work on a Kolb? |
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Obviously there is a lot of difference between a 46 horse 503 and a 60 horse HKS, I suspect that possibly the 4-stroke torque of the HKS would make it not all that much less that the way my MKIII performed with the original 532, which was quite acceptable.
So my question is: Who out there is using an HKS, what are using it on, what does your airplane weigh, and how do you like it?
Richard,
With the increased weight of the HKS along with the increased HP my take off performance is worse than it was with the 503 however the cruise is faster by about 4 MPH. and the climb is better by about 250 fpm.
I do not have a correct weight for my Firestar II, but with me and full gas, (10 gal) I believe that it weighs about 700 lbs. Using bathroom scales and in as unscientific a manner as is possible I came up with 460 lbs empty.
The value for me is the increase in rebuild time and fuel savings. The answer for me is yes its worth it.
Larry
Note: If you forward this email, please delete the forwarding history, which includes my email address.
[quote][b]
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