Shimmy on nosegear on Aerocet Amphibs

[73T]

I fly a carbon cub on Aerocet amphibs. Put on the floats this spring and found a more noticeable shimmy on the 2 wheels up front - they shimmy until 25mph then it stops. Anyone have any experience with this - I keep full aft on the the stick and no braking but doesn't seem to make a difference. Thanks for any ideas.

[Springloaded]

I have never had any shimmy problems on Aerocets. Flown four or five different Carbon Cubs with them. Wonder if front caster bolt is lose or something.Have you greased it lately? Check tension on front wheel bearings? I would pick the front wheels off the ground and check for anything lose or too tight.
Chuck

[Jon Delamarter]

Response from Aerocet:

Hi Jon,

Is there any noticeable play in the gear arm pivot pin, nose wheel caster pin, or axle?

Was the nose wheel caster adjusted per SB12, to achieve the proper pivot force of 2.25 – 2.75 at the axle center?

Caleb Troumbley

Quality Manager
Aerocet, Inc.
265 Shannon Lane
P.O. Box 2119
Priest River, ID 83856
USA
Tel: 208-448-0400
Fax: 208-448-1644
E-mail: ctroumbley@aerocet.com
E-mail: parts@aerocet.com
Website: www.aerocet.com

[wwibby]

I fly a carbon cub on Aerocet amphibs. Put on the floats this spring and found a more noticeable shimmy on the 2 wheels up front - they shimmy until 25mph then it stops. Anyone have any experience with this - I keep full aft on the the stick and no braking but doesn't seem to make a difference. Thanks for any ideas.

My Aerocets are just two years old. . have had no problems but have lately noticed a little difficulty turning the front
around by hand. I am going to raise it and see if those front wheels are moving freely. I note that mine do not have the grease fitting that the ones they sent me this spring have. I was prepared to change them but I received a notice to not do anything yet. . .gotta follow that up and see what gives. WWW

[Jon Delamarter]

My Aerocets are just two years old. . have had no problems but have lately noticed a little difficulty turning the front
around by hand. I am going to raise it and see if those front wheels are moving freely. I note that mine do not have the grease fitting that the ones they sent me this spring have. I was prepared to change them but I received a notice to not do anything yet. . .gotta follow that up and see what gives. WWW

Wayne, the only part you need to hold off on is the float pump cover; it's got interference issues. Please install the other parts.

Thanks,

[Pete D]

Contact CubCrafter's support, make sure your floats are up to date on their SBs. There have been a couple of updates on the nose wheel assemblies, maybe a year ago or so.

Jon Delamarter - Customer Support Manager
support@cubcrafters.com - e-mail
509.367.5200 - direct

[Joseph206]

Contact CubCrafter's support, make sure your floats are up to date on their SBs. There have been a couple of updates on the nose wheel assemblies, maybe a year ago or so.

Jon Delamarter - Customer Support Manager
support@cubcrafters.com - e-mail
509.367.5200 - direct

Hi Jon,
I bought Tim Martins Floats and the shimmy is bad also.
They are updated with new nose wheel hardware.
I replaced the nose tires
still shimmy.
Any thoughts?????
Regards
Joe

[Jon Delamarter]

Hi Jon,
I bought Tim Martins Floats and the shimmy is bad also.
They are updated with new nose wheel hardware.
I replaced the nose tires
still shimmy.
Any thoughts?????
Regards
Joe

Joe,

On August 16th of last year, I shipped kits for Aerocet Service Letters 11, 12, 13, and 14. Can you confirm that those parts were all installed?

Thanks,

[Joseph206]

Joe,

On August 16th of last year, I shipped kits for Aerocet Service Letters 11, 12, 13, and 14. Can you confirm that those parts were all installed?

Thanks,

H Jon,
Yes all of the Service Letters were installed.
Do you think that we need to shim them tighter with plastic shims????

[Jon Delamarter]

H Jon,
Yes all of the Service Letters were installed.
Do you think that we need to shim them tighter with plastic shims????

Let's see if we can get Aerocet to weigh in on this conversation. Stand by...