hihosland Posted April 28, 2019 Share Posted April 28, 2019 Is it possible to safely use 18mm coolant hose where Rotax calls for the difficult to source 17mm? many thanks Link to comment Share on other sites More sharing options...
ruffasguts Posted April 28, 2019 Share Posted April 28, 2019 not if it is 24/23 registered not difficult to source Bert Flood can supply but will drain your bank account Mick W Link to comment Share on other sites More sharing options...
onetrack Posted April 28, 2019 Share Posted April 28, 2019 No. The 17mm hose is specifically made for Rotax by Continental. You can get it (qty is per metre) from Aircraft Logistics in NZ, and it's freight-free to Australia. 922 250 - Aircraft Logistics Support 1 Link to comment Share on other sites More sharing options...
Downunder Posted April 28, 2019 Share Posted April 28, 2019 Is it possible to safely use 18mm coolant hose where Rotax calls for the difficult to source 17mm? many thanks [/url]https://www.recreationalflying.com/threads/rotax-912-5-year-rubber-replacement.53514/ Link to comment Share on other sites More sharing options...
skippydiesel Posted April 28, 2019 Share Posted April 28, 2019 Is it possible to safely use 18mm coolant hose where Rotax calls for the difficult to source 17mm? many thanks not if it is 24/23 registered not difficult to source Bert Flood can supply but will drain your bank account Mick W I second Mick W advise regarding dimensions and would go further & include 19/experimental/kit built Rotax 912/914 powered aircraft - why use a hose that may leak when the correct hose is available - false economy. I do not agree that your bank balance will be drained - the 17 mm hose supplied by Floods comes as a straight length that you cut to fit PLUS one short bent length that is purpose moulded for your application - use the correct hose clamps for best security. If you click on Downunder's advice you will find my experience regarding hose replacement - NOTE radiator hoses I used may not suit your application. Repco staff have significant room to negotiate sale price and will take back/refund unused undamaged clean parts. My local Repco is very helpful with selecting radiator hose profiles. Link to comment Share on other sites More sharing options...
cscotthendry Posted May 5, 2019 Share Posted May 5, 2019 Is it possible to safely use 18mm coolant hose where Rotax calls for the difficult to source 17mm? many thanks No, you should never rely on the hose clamp to seal the connection between any hose and what it's attached to. This is not only sound practice, it is likely specified in AC 43(... whatever it is) that specifies aviation maintenance practice. The hose must seal by itself. The clamp is only to mechanically retain the hose on the connection, not to make the seal. 1 Link to comment Share on other sites More sharing options...
dan3111 Posted May 23, 2019 Share Posted May 23, 2019 if 19 rego you can use MACKAY HOSE part number HH1752 comes as 2 metre about $20 from a car parts place 17.5mm Link to comment Share on other sites More sharing options...
skippydiesel Posted May 23, 2019 Share Posted May 23, 2019 if 19 rego you can use MACKAY HOSE part number HH1752 comes as 2 metre about $20 from a car parts place 17.5mm BUT do you get the preformed/bent hose that you will need for an unrestricted coolant flow on one of your above block hoses?????? Link to comment Share on other sites More sharing options...
dan3111 Posted May 27, 2019 Share Posted May 27, 2019 I have got my coolant pipes in a way so don’t need the elbow . 1 Link to comment Share on other sites More sharing options...
skippydiesel Posted May 28, 2019 Share Posted May 28, 2019 I have got my coolant pipes in a way so don’t need the elbow . Great! Link to comment Share on other sites More sharing options...
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