EricB Posted April 30 Report Share Posted April 30 Undergoing the 5 year rubber replacement on my CTLS. It seems that some parts that make the engine whole are not Rotax, some are FD, and some are unknown. Have others been surprised by a hose or fitting that isn't Rotax? ALSO, if anyone has pictures of the left side of the engine especially showing the water circuit coming down from the top of the engine, that might be very helpful. Mine has a sharply bent hose (which functions fine) but is not anyone's standard. I have all the Rotax manuals and they are most unhelpful in this instance. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted April 30 Report Share Posted April 30 Hi Eric, Give me a call and I can help you out. This side of the engine is easy and yes some hose are not Rotax. The Mfg uses what they want. Rotax only supplies certain hoses. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted April 30 Report Share Posted April 30 There are two different coolant hose arrangements for the CTLS that I have encountered. I don't think the second one is covered in the parts manual, but it does use some 90° fittings. Post a picture if you can. Quote Link to comment Share on other sites More sharing options...
EricB Posted April 30 Author Report Share Posted April 30 Here's the pic Tom requested. One end of the hose is disconnected from what I assume to be the thermostat. Quote Link to comment Share on other sites More sharing options...
Anticept Posted May 1 Report Share Posted May 1 That is indeed the thermostat connection. The rotax installation manual is helpful for determining optional configurations. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted May 1 Report Share Posted May 1 Buy a 90 degree 1" hose for this replacement Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted May 1 Report Share Posted May 1 Attached is a picture of the normal installation. It uses a section of straight 1" hose over a formed aluminum tube. On yours it appears that someone has replaced that with a formed rubber hose. I suppose it will work, but I don't think I would pass one like that without approval from the manufacture. Quote Link to comment Share on other sites More sharing options...
EricB Posted May 1 Author Report Share Posted May 1 I think I now have good direction on this. MANY thanks for Roger for spending time on the phone with me this morning and clarifying so much of what was only part of each story. Thanks also to Tom for posting that picture. This forum is a great resource for the new and experienced FD owner. I'll post a wrap up when Snoopy and I are back in the air. Quote Link to comment Share on other sites More sharing options...
Jim Meade Posted May 2 Report Share Posted May 2 Eric, your plane is SLSA, is it not? If you're not sure of the right part, you could call Airtime Aviation in Tulsa with the airplane serial number and they should be able to help you. Quote Link to comment Share on other sites More sharing options...
EricB Posted May 2 Author Report Share Posted May 2 Airtime told me the 90 hose was "non-standard" and not something they could supply. Lockwood is my first stop for Rotax parts and when they told me it wasn't Rotax, I turned to Airtime. The plane is Experimental status now so I got some great advice from Roger on several ways to deal with that hose. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted May 2 Report Share Posted May 2 Just buy a 90 degree 1" hose at an auto parts. I use these on several different types of aircraft. I use the Gates Green Stripe hose. Quote Link to comment Share on other sites More sharing options...
Jim Meade Posted May 3 Report Share Posted May 3 Eric, my comment was intended to say that Airtime could tell you the correct hose. Indeed, in their position it's understandable they would not recommend a non-standard hose, even for ELSA. I assume you identified the actual new non-standard part when you made your log book entry, otherwise someone would be likely to assume it was the OEM part when it is not. Quote Link to comment Share on other sites More sharing options...
EricB Posted May 3 Author Report Share Posted May 3 In reflecting on your comment, I'm surprised they did not say something like, "Here is the correct hose and part number". He did say he saw nothing wrong with the picture I provided so maybe he was trying not to appear pushy about "buy this" Still. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted May 3 Report Share Posted May 3 There is nothing special about the hose, it is just a 1" or 25mm hose. The Flight Design part is the formed aluminum tube on the inside of the hose to provide its shape. Probably during a previous rubber replacement someone through out the hose without realizing there was an aluminum support tube inside. Quote Link to comment Share on other sites More sharing options...
procharger Posted May 5 Report Share Posted May 5 Can you use a spring in that hose? Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted May 5 Report Share Posted May 5 2 hours ago, procharger said: Can you use a spring in that hose? Probably, but still not an OEM installation. Quote Link to comment Share on other sites More sharing options...
EricB Posted May 6 Author Report Share Posted May 6 Finally decided spring in the 1" hose is the way to go. I've been told "just get a bent hose from (auto parts supplier) but not one auto part house near me has anything close. I've got the spring (too short - too stiff) and the hose We shall see. It is NOT OEM but I have the experimental certificate. Was hoping NOT to deviate from SLSA but have not heard what is the "right" thing to do from Airtime. They did say my current installation "looks fine" but, as Tom notes, not OEM. I'm just glad I have options which my A&P and I can discuss and decide which is acceptable. Spring/hose, pipe/hose, properly bent hose, what a cluster really. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted May 6 Report Share Posted May 6 Gates 21488 should work for a molded hose. https://www.oreillyauto.com/detail/c/gates/air-conditioning---heating/heater-hose/78e5e673c02c/gates-radiator-coolant-hose/gat0/21488?q=heater+hose&pos=3 Quote Link to comment Share on other sites More sharing options...
EricB Posted May 7 Author Report Share Posted May 7 Thanks for that part number Tom. Attached is my general problem at all area auto stores. Maybe I'll see if my local O'R will order it in for future use. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted May 7 Report Share Posted May 7 21488 is the 1" 90 degree hose I use. I buy four at a time Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.