P92 Eaglet Main gear inner tube size

[robparis]

Hi, anyone can say me the exact size of main gear inner tubes of my P92 Eaglet (the P92 JS is the same). Now, it is mounted 13 4x6 TR87 valve type, size of tires are 5x5 Airtrac.
Because, of the low quality of the tubes that resellers sells in Italy, I'd like to buy somethings better.
I've looked from the AircraftSpruce website, but I can't understand which size to buy. There is GoodYear 5x5 or Micheling 5x5 but the valve stem is TR67

Thanks to all

Rob

[TiPi]

Hi Rob, I bought these from Aircraft Spruce: TR67A 06-00755 Leak-Guard tube 500 x 5, not cheap but they have been holding the pressure well.

Both are right angle, TR67 is the longer stem (approx 60mm), TR87 is approx 30mm. I have taken off my wheel pants and fitted wheel caps, so no problem with the longer stem (it actually helps, I can check the pressure without taking the cap off).

[robparis]

Thanks TiPi for your reply. I don't like removing the weel pants. I should have found from Aircraft Spruce the Aero Classic with TR87 stem

[TiPi]

gained 3kg payload, lost no speed, didn't have to replace the broken bracket and can easily inspect the tyres (4 wins)

[robparis]

Hi Tipi, I finally solved my problem. I wrote to Tecnam Italia and they told me that there is a Service Bulletin about inner tubes and the GoodYear inner tubes can mount on Eaglet and all other models. Tecnam SB-017. So, I bought the inner tubes from Tecnam (P/N TU5.0X5TR67B90 BUTYL) and finally I can mount it without remove my wheel pants.