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Nosewheel Dresser or Chinese/Russian?

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Yakbaas

Joined: 08 Oct 2008
Posts: 10
Location: FAMB

Posted: Fri Nov 19, 2010 10:25 pm Post subject: Nosewheel Dresser or Chinese/Russian?

The nosewheel on my 18T developed some sidewall cracks with 60-70% of thread left.

Which of the nosewheel tyres give the best service?



Riaan

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dsavarese0812(at)bellsout
Guest

Posted: Sat Nov 20, 2010 5:15 am Post subject: Nosewheel Dresser or Chinese/Russian?

If purchasing from Desser in the US and based on my experience  with many, many of their new tires, I would purchase a 400x150 nose tire  from Doug Sapp which is a smooth tire, then ship the new tire from Doug (about  $85 vs. a new tire from Desser at $165) and ship it to Desser for retreading  (about $85 for the retread).  The retreaded tire will be perfectly balanced  because Desser does their own in-house retreading and balancing AND the tire  will last 3-4 times longer than a new Desser tire.  I have had to change  numerous "new" tires from Desser including shipping them back because; 1- there  was no red dot on the tire which is the point on the tire which is placed  adjacent to the valve stem for balancing. 2- the tire would absolutely not  balance regardless of how many times I removed and rotated the tire on the hub  even though the tire did have a red dot on it.

  

 I have discussed this with Desser more times than I can count  and they insist it is not their new tires causing the imbalance.  My  comment to them is, "Well, if the tires were perfectly smooth at all operating  speeds BEFORE I replaced them with your new tires, what would you suggest could  be the problem."  They have no answer for that question.  The last  time I went through this with a set of their new tires for the main wheels, I  replace 3 sets of tires before I found a set that would not vibrate.  And  the reason the 3rd set worked is because Desser said they would pull one set off  the shelf and put them on their balance machine (probably the same machine they  use to balance the retreaded tires) at their California factory.

  

 Dennis

  

  

 [quote]   ---

dsavarese0812(at)bellsout
Guest

Posted: Sat Nov 20, 2010 5:31 am Post subject: Nosewheel Dresser or Chinese/Russian?

BTW, the NEW Desser tires are not manufactured by  Desser.  Desser will not say who manufactures the "AERO CLASSIC" 400x150  and 500x150 tires for them.  Whoever is, their quality control leaves a lot  to be desired.  Desser people have even made comments like, "well, the  tires are for experimental aircraft and it says that on the tire."  Maybe  that means the quality of the tire does not have to be the same as for standard  category aircraft?

 Dennis

 [quote]   ---

rick(at)rvairshows.com
Guest

Posted: Sat Nov 20, 2010 6:07 am Post subject: Nosewheel Dresser or Chinese/Russian?

the Aeroclassic 400x 150 tire as sold by Desser gave me 30 hours and about sixty landings until bald, on my Sukhoi.  After a Cleveland brake and wheel conversion, i switched to Goodyear Flight Custom III and have 150 hours on them after over 300 landings and they still have tread.  Is there a conversion you can make to a US wheel to permit high quality tires instead of chewing gum tires?

Rick Volker 



Sent from my iPad



On Nov 20, 2010, at 8:24 AM, "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:



[quote]  BTW, the NEW Desser tires are not manufactured by  Desser.  Desser will not say who manufactures the "AERO CLASSIC" 400x150  and 500x150 tires for them.  Whoever is, their quality control leaves a lot  to be desired.  Desser people have even made comments like, "well, the  tires are for experimental aircraft and it says that on the tire."  Maybe  that means the quality of the tire does not have to be the same as for standard  category aircraft?

 Dennis

 [quote]   ---

radiopicture

Joined: 23 Jun 2008
Posts: 263

Posted: Sat Nov 20, 2010 7:25 am Post subject: Nosewheel Dresser or Chinese/Russian?

I have my original tires, but I think they little fissures on the side walls.... unusable even for a retread, right?



Also, if you do have them retread, is there a way to get your actual tires back, or do they just throw your tires into the system and you get whatever?



On Nov 20, 2010, at 8:24 AM, A. Dennis Savarese wrote:

[quote]BTW, the NEW Desser tires are not manufactured by Desser.  Desser will not say who manufactures the "AERO CLASSIC" 400x150 and 500x150 tires for them.  Whoever is, their quality control leaves a lot to be desired.  Desser people have even made comments like, "well, the tires are for experimental aircraft and it says that on the tire."  Maybe that means the quality of the tire does not have to be the same as for standard category aircraft?

Dennis

[quote]---

dsavarese0812(at)bellsout
Guest

Posted: Sat Nov 20, 2010 10:55 am Post subject: Nosewheel Dresser or Chinese/Russian?

According to Desser, they will not retread a tire that has  cord showing or sidewall cracking.  You can ship your tires back and they  will retread them for you and return your original tires to you.  That  assumes the tires are "acceptable" for retreading.

 Dennis

 [quote]   ---

czech6(at)mesanetworks.ne
Guest

Posted: Sat Nov 20, 2010 3:55 pm Post subject: Nosewheel Dresser or Chinese/Russian?

The tires from the L-29 fit nicely on the yak nose wheel. Much better tire.



---

radiopicture

Joined: 23 Jun 2008
Posts: 263

Posted: Sat Nov 20, 2010 4:06 pm Post subject: Nosewheel Dresser or Chinese/Russian?

What about the mains? Any substitutes for that?

On Nov 20, 2010, at 6:52 PM, Bill Geipel wrote:



[quote] 

 <czech6(at)mesanetworks.net>



 The tires from the L-29 fit nicely on the yak nose wheel. Much  

 better tire.



 ---

Vic

Joined: 12 Aug 2008
Posts: 116
Location: Southern Bavaria

Posted: Sun Nov 21, 2010 7:03 pm Post subject: Re: Nosewheel Dresser or Chinese/Russian?

Hello,



Desser is most likely not to blame for wheel vibration, because a lot of vibration is caused by the valve and protecting rubber block of the inner tube. This assembly accounts for ~120 gramm unbalance. Plus, the rims on our 18 T are eccentric to the bearings, about 1.5mm on the indicator for the nose wheel. So you may be lucky to compensate eccentricity of the rim by moving the tire around a few times, but you´d have to balance the weight of the valve and rubber as well - not easy for the nose wheel. So I made a new nose wheel rim in aluminium with modern seals, preset taper roller bearings, and near enough balanced by inserting carbide from end mill shafts into the rim opposite the valve. For the main wheels you could put modern car lead weights with sticky tape into the wheel to balance it.



Vic

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wise(at)txc.net.au
Guest

Posted: Sun Nov 21, 2010 8:35 pm Post subject: Nosewheel Dresser or Chinese/Russian?

G'Day Vic,



Are you selling these rims and if sop how much?

I presume that you are using a tyre other than a Desser



Cheers,

Chris.



--

alikatz(at)mbay.net
Guest

Posted: Sun Nov 21, 2010 10:06 pm Post subject: Nosewheel Dresser or Chinese/Russian?

Vic,

   Very nice job on the nose wheel rim...



Jim



Quoting Vic <vicmolnar(at)aol.com>:



 	  Quote: 	
		   



 Hello,



 Desser is most likely not to blame for wheel vibration, because a   

 lot of vibration is caused by the valve and protecting rubber block   

 of the inner tube. This assembly accounts for ~120 gramm unbalance.   

 Plus, the rims on our 18 T are eccentric to the bearings, about   

 1.5mm on the indicator for the nose wheel. So you may be lucky to   

 compensate eccentricity of the rim by moving the tire around a few   

 times, but you´d have to balance the weight of the valve and rubber  

  as well - not easy for the nose wheel. So I made a new nose wheel   

 rim in aluminium with modern seals, preset taper roller bearings,   

 and near enough balanced by inserting carbide from end mill shafts   

 into the rim opposite the valve. For the main wheels you could put   

 modern car lead weights with sticky tape into the wheel to balance it.



 Vic





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 http://forums.matronics.com/viewtopic.php?p=320393#320393





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 http://forums.matronics.com//files/p1040174_204.jpg

Vic

Joined: 12 Aug 2008
Posts: 116
Location: Southern Bavaria

Posted: Tue Nov 23, 2010 4:48 am Post subject: Re: Nosewheel Dresser or Chinese/Russian?

Hello,



thank you for asking, but there are no alu nose wheels for sale at present, maybe when I retire in two years ... Actually this was a very traditional (= time consuming) manufacturing process for a one-off, to replace a corroded magnesium rim . With a little help from CNC machinery one could possibly produce this at  reasonable costs and achieve a superior replacement. This should give the shimmy damper an easy life then. So my idea in case of vibration problems would be to add some lead weights into the originals and have them balanced statically at least, a friendly motorbike shop should be helpful at that. The nose wheel offers only limited range of balancing, see photos. Maybe milling little pockets in the side of the separate flange to fight centrifugal forces for the weights should give reliable positioning combined with the sticky tape. For the main wheels there is ample space inside the cast wheel to balance. The geometric run-out of the rim is not so noticeable vibration-wise, I believe and you have to live with that. But I am working on a mod for modern seals ... 

  As to Desser tires, none required at present, WLAC in UK supply Chinese tires - no idea if they are a good alternative. But shipping from USA to Europe is cost-prohibitive for us on this side of the Atlantic. Am I right in thinking that tires and wheels of 18 T and 52 are the same ? 

  When producing replacements : Is there a legal aspect for the manufacturer like with certified aircraft ? Or in case of experimentals the owner is tinkering at his own risk ? I guess the pilot is in jail with one leg anyway. 



Cheers

Vic

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Nanchang CJ6

Joined: 03 May 2009
Posts: 74
Location: China

Posted: Wed Nov 24, 2010 5:48 pm Post subject: Re: Nosewheel Dresser or Chinese/Russian?

We can supply Chinese tyres 500*150 and 400*150.

If who are interested in it,pls contact us off list.Thanks!

Sarah

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_________________
Sarah's E-mail:lcdzkj@live.cn

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