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bob.kravis(at)gmail.com
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 Posted: Tue Jun 01, 2010 4:12 pm Post subject: up-sizing tires and wheels |
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My new Firefly has drum brakes and 11x4.00-5 Cheng Shin tires with an outside diameter of just over 10 inches. A friend with 300 hrs. in a Firestar recommended putting on larger tires at once. He felt that the small tires would be prone to snagging on rough ground and increasing the likelihood of a nose over accident. He also thought that the increased gear height would be beneficial in at rest attitude and ground handling. Any thoughts? The plane is at 280#'s with a BRS softpack and electric starter. Just a couple pounds over the allowed 278#'s. I was hoping to rig a pair of Tuff wheels 16 in. like these from Phantom Aero. http://www.phantomaero.com/ (click on Disc Brakes) but Jim there said that the 4x5/8 axles would have to be replaced with 5 in. x 1/2 in. to make it work and that didn't sound to good to me. Suggestions and advice welcomed.
bk
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Tue Jun 01, 2010 4:39 pm Post subject: up-sizing tires and wheels |
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Why not look through the Aircraft Spruce site and see what is available for the wheels you have. You might be able to increase the diameter and try it out without committing to the expense and problems. Worked for me, I'm still running the Nerf tires I put on stock rims right after I bought my Mk III.
Rick Girard
On Tue, Jun 1, 2010 at 7:11 PM, Bob Kravis <bob.kravis(at)gmail.com (bob.kravis(at)gmail.com)> wrote:
[quote] My new Firefly has drum brakes and 11x4.00-5 Cheng Shin tires with an outside diameter of just over 10 inches. A friend with 300 hrs. in a Firestar recommended putting on larger tires at once. He felt that the small tires would be prone to snagging on rough ground and increasing the likelihood of a nose over accident. He also thought that the increased gear height would be beneficial in at rest attitude and ground handling. Any thoughts? The plane is at 280#'s with a BRS softpack and electric starter. Just a couple pounds over the allowed 278#'s. I was hoping to rig a pair of Tuff wheels 16 in. like these from Phantom Aero. http://www.phantomaero.com/ (click on Disc Brakes) but Jim there said that the 4x5/8 axles would have to be replaced with 5 in. x 1/2 in. to make it work and that didn't sound to good to me. Suggestions and advice welcomed.
bk
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