If your brakes still work it might be the reservoir or associated tubing leaking (?) The tubes stiffen over time, and the reservoir becomes brittle.
On Tue, Jul 1, 2025 at 10:12 AM Ric Sutton <ricinthel...@outlook.com> wrote: > Hi Gyozo. > Depending on where its leaking from it may be easily repairable. > Mine (dimona mk1) was leaking from the park brake valve portion of the > master cylinder. if memory serves me correctly I replaced the o-rings on > that valve and it was good to go. > cheers > ric > ------------------------------ > *From:* dog@lists.riverland.net.au <dog@lists.riverland.net.au> on behalf > of Laurie Hoffman via dog <dog@lists.riverland.net.au> > *Sent:* Tuesday, July 1, 2025 2:13 AM > *To:* dog@lists.riverland.net.au <dog@lists.riverland.net.au> > *Subject:* Re: [DOG mailing list] Master brake cylinder > > We found that tightening the steering cables rectified bad shimmy on the > straight shaft tail wheel. > Although the suspension tailwheel with the rubber blocks still shimmied > badly after that > I suspect it might be related to softening (or hardening?) of the blocks > over time that may be involved. > With the super Cub we found keeping it highly inflated helped a lot on > sealed surfaces which would have been due to less tread surface making > contact with the bitumen I think. > The other possibility is a slightly bent vertical shaft due heavy landings > and thus throwing the geo.etry out. There is a hell of a lot of load on the > tailwheel on landing particularly on rough ground. > Laurie > > Yahoo Mail: Search, Organize, Conquer > <https://mail.onelink.me/107872968?pid=nativeplacement&c=US_Acquisition_YMktg_315_SearchOrgConquer_EmailSignature&af_sub1=Acquisition&af_sub2=US_YMktg&af_sub3=&af_sub4=100002039&af_sub5=C01_Email_Static_&af_ios_store_cpp=0c38e4b0-a27e-40f9-a211-f4e2de32ab91&af_android_url=https://play.google.com/store/apps/details?id=com.yahoo.mobile.client.android.mail&listing=search_organize_conquer> > > On Tue, Jul 1, 2025 at 8:15 AM, Ian Mc Phee > <mrsoar...@gmail.com> wrote: > Over inflation can start it - we have rubber shock version. > > Ian McPhee > +61 428847642 > > On Mon, 30 June 2025, 20:03 Ian Williams, <i...@agcon.co.nz> wrote: > > Hi all, > I have just had an interesting flight in a Dimona at Swansea in the UK. … > operating on a sealed strip > Had real bad tailwheel shimmying on landing > The tailwheel asst is one of those rubber sprung types > Any ideas the best approach to fix the prob > > Ian W > In uk but normally New Zealand > Sent from my iPad > > On 21 Jul 2022, at 13:02, pattoninfl.aol.com via dog < > dog@lists.riverland.net.au> wrote: > > > Gyozo, > > It's a master cylinder used in Piper Cherokees. I replaced mine about 1 > year ago. I bought mine from a aircraft junkyard here in the US. > > Regards, > Bruce Patton > > > -----Original Message----- > From: Győző Horváth <horvathgyoz...@gmail.com> > To: dog@lists.riverland.net.au > Sent: Thu, Jul 21, 2022 2:55 am > Subject: [DOG mailing list] Master brake cylinder > > Hi, > > It seems that there is a leakage at master brake cylinder of my Dimona. > The belly is full with brake fluid, however the brake still works well. Do > you have experience with it? Is it a Cessna cylinder? What kind of parts > should be ordered for repair and do you know the specifications and source? > > With many thanks and best regards > Gyozo > --------------------------------------------------------------------- > You are subscribed to the Dimona Owners Group mailing list. > This list is archived in public. http://waikeriegliding.com/dog/ > To unsubscribe, send email to: dog-unsubscr...@lists.riverland.net.au > >
