[Mark]

Mark on February 1, 2023 at 6:48 am #21813

Thanks, Kent.
Speaking of parts, I placed an order with Acorn Welding last Friday and thanked them for being a Piper Flyer sponsor. They were $700 less expensive than Knisley Welding for exhaust heater shrouds, so they saved me $1,400 for the two.

[Kent Dellenbusch]

Kent Dellenbusch on February 1, 2023 at 6:41 am #21812

If parts are needed just let me know. I love looking for parts. 

[Mark]

Mark on January 31, 2023 at 5:16 pm #21811

Tom, thanks for the quick reply. Our flying club Dakota is in for its annual and I remembered your article about the bungees but couldn’t remember the fix.

Mark

[Mark]

Mark on January 31, 2023 at 5:13 pm #21810

Thanks, Jen! I know that I put that month’s issue with Tom’s article where I wouldn’t lose it. If I could only remember where!

Mark

[Tom Machum]

Tom Machum on January 31, 2023 at 3:55 pm #21809

Hi Mark,

As the article says, we did find that one of the bungees was “under load” as described by the maintenance manual. I think the boys (techs) also tightened or replaced just about every single bushing and bolt. It was great following that. Hope this helps!

Tom

[Jen D]

Jen D on January 31, 2023 at 3:38 pm #21808

Hi Mark,
In case Tom is away for a bit, I’m attaching a pdf of that article. Hope this helps

Attachments:

• 0722_PiperFlyerSOFShimmy.pdf

[Mark]

Mark on January 31, 2023 at 7:37 am #21806

 Tom:

Our Dakota has had the same intermittent shimmy for some time. At last year’s annual the shop checked the damper, and it was okay. A few weeks ago we had to change the nosewheel tire and tube and thought that fixed it, but it didn’t.

If memory serves, you solved this problem on your Dak and wrote about it in your column. I saved that magazine for the longest time but now can’t find it. Was it something to do with the steering bungees?

Mark Hall
Greensboro, GA

Attachments:

• 0722_PiperFlyerSOFShimmy_2023-01-31.pdf

[STEVE]

STEVE on October 28, 2020 at 9:34 am #20291

Brake pedals should not pulse unless you have a warped disc, or the brake itself is not free to slide in and out of the guide pins.
From your latest description I would look closely at the brakes.
I hate to say it, but I have seen the aluminum brake housings warped due to excessive torque applied to what’s called the tie bolts.
I recommend that you download a copy of the Cleveland Technician’s Guide at :https://www.parker.com/literature/WBtech.PDF.
Check for a warped disc and to make sure the brake assy slides in and out (without cocking) on the guide pins. If the brake pads are worn unevenly, it shows that the brake is binding instead of sliding.
Let me know what you find.
S

[Tom Machum]

Tom Machum on October 25, 2020 at 4:31 am #20282

Hi Steve,

Tire and tube are relatively new but we’ll look at that closely. We’ll also check the bungees. To me they look like the gizmos that close screen doors without a slam. Perhaps that’s the next step- off to the hardware store to MacGyver up a couple of those!!

The odd piece of this puzzle is that we never get shimmy at all on takeoff and only sometimes on landing and certainly with braking. Let off the braking and it subsides right away. And like I’ve said, the pedal pulsing is more consistent in the R pedal.

Things that make you go hmmmmm 🙂

[STEVE]

STEVE on October 24, 2020 at 2:06 pm #20279

Hi Tom;
Have you changed the nose gear tire and tube??
If not, that’s the next step.
If you want, you can field test the nose gear bungees by disconnecting them at the fwd end and manually pushing and pulling. You should not feel and “slack” You will feel the springs inside compressing and stretching but there should be slack.
Steve