facthunter Posted May 30, 2023 Share Posted May 30, 2023 Get a piece of HEX offcut OR Trailer axle nuts will most likely be Metric. Nev Link to comment Share on other sites More sharing options...
onetrack Posted May 30, 2023 Share Posted May 30, 2023 (edited) Marty - Yes that Jap motorbike axle nut is M22 x 1.5. It appears it fits a wide range of Jap bikes. I didn't even think of motorbike axle locknuts yesterday. https://specbolt.com/rear-axle-fuji-lock-nut-m22/ Edited May 30, 2023 by onetrack 1 Link to comment Share on other sites More sharing options...
Marty_d Posted May 30, 2023 Author Share Posted May 30, 2023 Yep, although they are 13mm thick. I've only got 16mm total on the threads and I need 6 for the top nuts and another 1 for the bracket, leaving 9mm. So I reckon Blueadventures is right and I should just get some scrap 6mm ally and tap it out. 1 Link to comment Share on other sites More sharing options...
Geoff_H Posted May 30, 2023 Share Posted May 30, 2023 I have used two nuts locked on a thread in the lathe and carbide tools to cut down nuts. This system keeps the tool away from the jaws and an expensive collission. I have also made nuts using hex bar in the lathe. Beware of cheap Chinese dies I have bought some online that don't cut a thread that will connect to a standard bolt. One fastener supplier that sometimes has the odd fastener is Lee Bros of North Parramatta they are an outside chance. But if you find that they have one I will buy it and post it to you. 3 1 Link to comment Share on other sites More sharing options...
old man emu Posted May 30, 2023 Share Posted May 30, 2023 My go to fastener supplier for non-aviation spec stuff is www.bolt.com.au at Smeaton Grange, which is near Camden NSW They list an M22 x.15 locknut for $7.80 Part No BLNMF22x1.5 There is a store in Dandenong. Store Locations WWW.BOLT.COM.AU Find your nearest local Bolts & Industrial Store. 1 Link to comment Share on other sites More sharing options...
facthunter Posted May 30, 2023 Share Posted May 30, 2023 6 MM of Ally is nowhere near the right strength for 11MM dia. Nev 1 Link to comment Share on other sites More sharing options...
Geoff_H Posted May 30, 2023 Share Posted May 30, 2023 90% of the axial load of a bolt is taken in the first one and a half threads. A bolt with a lower modulus of elasticity make load 90% in a slightly larger number of threads. So lock bolt material would not worry me so much. But the galvanic action of dissimilar metals would worry me. 1 Link to comment Share on other sites More sharing options...
Marty_d Posted May 31, 2023 Author Share Posted May 31, 2023 The oil cooler threads are aluminum themselves, I'm pretty sure. 1 Link to comment Share on other sites More sharing options...
spacesailor Posted May 31, 2023 Share Posted May 31, 2023 (edited) Taping alloy is not good , as it binds in the tap thread's. BEST To get' HEX ' BAR ,then you don't have ' galvanic problems. spacesailor Oops read that last post after I hit send . Make them all alloy . Edited May 31, 2023 by spacesailor A little more ! 1 Link to comment Share on other sites More sharing options...
facthunter Posted May 31, 2023 Share Posted May 31, 2023 That's the logical thing to make them from then. Duralumin (TM) is a stronger alloy. . Nev 1 Link to comment Share on other sites More sharing options...
skippydiesel Posted June 30, 2023 Share Posted June 30, 2023 Dis I mis the obvious supply solution in my very quick read through - E mail B Flood with the following part number for an availability & price. Rotax Oil Radiator parts - 4 nuts on part number 242873 2 N 242873 ..2 HEX NUT M22x1.5 (4)h (4)h (4)h (4)h (4)h (4)h (4)h 1 Link to comment Share on other sites More sharing options...
Blueadventures Posted June 30, 2023 Share Posted June 30, 2023 24 minutes ago, skippydiesel said: Dis I mis the obvious supply solution in my very quick read through - E mail B Flood with the following part number for an availability & price. Rotax Oil Radiator parts - 4 nuts on part number 242873 2 N 242873 ..2 HEX NUT M22x1.5 (4)h (4)h (4)h (4)h (4)h (4)h (4)h He did source some. I was actually sorting stuff at the hangar today and unwrapped some bubble wrap and it contained a set of oil cooler connections (items in image except the 1 & 5 parts). Were from an oil cooler we needed 8 months ago. 1 Link to comment Share on other sites More sharing options...
Blueadventures Posted June 30, 2023 Share Posted June 30, 2023 Marty if your ones don't fit or something let me know. 1 Link to comment Share on other sites More sharing options...
Marty_d Posted July 1, 2023 Author Share Posted July 1, 2023 44 minutes ago, Blueadventures said: Marty if your ones don't fit or something let me know. Thanks Mike, will do. They're coming from China so I'm not expecting them for a while. Link to comment Share on other sites More sharing options...
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