Coolant Line Clamp

H. Paul Shuch is a Light Sport Repairman with Maintenance ratings for airplanes, gliders, weight shift control, and powered parachutes, as well as an independent Rotax Maintenance Technician at the Heavy Maintenance level. He holds a PhD in Air Transportation Engineering from the University of California, and serves as Director of Maintenance for AvSport of Lock Haven.

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dstclair
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Coolant Line Clamp

Postby dstclair » Thu Jan 04, 2018 6:31 pm

What is missing in this picture?
20180104_161633 (2).jpg
20180104_161633 (2).jpg (173.14 KiB) Viewed 2498 times

Yeah -- a clamp. So Rotax mechanics out there -- what kind of clamp do I need to get from Ace Aviation or AviationZone? Just a hose clamp?
dave

3Dreaming
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Re: Coolant Line Clamp

Postby 3Dreaming » Thu Jan 04, 2018 6:48 pm

There is no pressure there, so any kind of clamp should do as long as it doesn't pinch the tube. On the CT's I use a Oetiker, because it is simple and I have them here.

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dstclair
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Re: Coolant Line Clamp

Postby dstclair » Thu Jan 04, 2018 7:08 pm

thanks -- what size is the line and/or what size clamp?
dave

3Dreaming
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Re: Coolant Line Clamp

Postby 3Dreaming » Thu Jan 04, 2018 9:18 pm

dstclair wrote:thanks -- what size is the line and/or what size clamp?


Flight Design uses a different hose than what you have in your picture, so I can't advise on clamp size.

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FastEddieB
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Re: Coolant Line Clamp

Postby FastEddieB » Fri Jan 05, 2018 8:51 am

From the picture, it looks like it may have just had a turn of safety wire around it.

Google came up with this:

Image

May not be kosher, but as 3dreamer said it’s not under any pressure, so that may have been enough to hold it.

There is a company that sells a tool that utilizes safety wire to replace small clamps:

Image

https://clamptitetools.com

I’ve never used that kit, but have secured small, non-critical hoses on motorcycles with safety wire to good effect. On my Sky Arrow, I’ve only used it to secure the ends of firesleeve.
Fast Eddie B.
Sky Arrow 600 E-LSA • N467SA
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MrMorden
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Re: Coolant Line Clamp

Postby MrMorden » Fri Jan 05, 2018 11:19 am

Mine didn't have a clamp on the coolant reservoir at all when I got the airplane; I added an Oetiker at the first annual. But the nipple being plastic, be careful how much clamping force you put on it. If you just gorilla smash it down it might crack and I think that cheap plastic bottle is about a $100 Rotax part.
Andy Walker
Athens, GA
Sport Pilot ASEL, LSRI
2007 Flight Design CTSW E-LSA

rsteele
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Re: Coolant Line Clamp

Postby rsteele » Fri Jan 05, 2018 11:34 am

I have some these clamps in my installation. It came that way for some of the connections and I made a few myself with a borrowed tool. Very easy to use, not so easy to get looking as neat as those in the photo. I'd want to practice more before using it on anything that might leak. I just used it so secure fire sleeve.

Ron

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dstclair
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Re: Coolant Line Clamp

Postby dstclair » Fri Jan 05, 2018 2:41 pm

MrMorden wrote:Mine didn't have a clamp on the coolant reservoir at all when I got the airplane; I added an Oetiker at the first annual. But the nipple being plastic, be careful how much clamping force you put on it. If you just gorilla smash it down it might crack and I think that cheap plastic bottle is about a $100 Rotax part.
Don't know if mine had a clamp or not but with the recent cold blast here in Dallas, I noticed coolant on the hangar floor and had a small stream on the belly after my last two flights. Note in the picture that the line isn't pushed snug against the bottle so this is probably why it started leaking. Pushed it snug last night and had no fluid on the floor this morning when I went to put a 7/16 in fuel inject clamp on. I tightened to just where the clamp could not be rotated so hopefully I didn't win the opportunity to buy a $100 plastic bottle.

I made a royal mess disconnecting the line so it'll be a flight or two before the residual fluid is blown off the engine and I can determine if it is fixed.
dave

TimTaylor
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Re: Coolant Line Clamp

Postby TimTaylor » Fri Jan 05, 2018 3:51 pm

FastEddieB wrote:From the picture, it looks like it may have just had a turn of safety wire around it.

There is a company that sells a tool that utilizes safety wire to replace small clamps:

Pliers
Commercial Pilot Airplane Single & Multiengine Land; Instrument Airplane; Sport Endorsement Airplane Single Engine Sea; Flight Instructor Airplane Single And Multiengine; Ground Instructor Advanced Instrument

roger lee
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Re: Coolant Line Clamp

Postby roger lee » Sat Jan 06, 2018 12:07 am

Almost any clamp here on the reservoir bottle hose would work since there is no pressure. It just needs to be secure enough not to slip off.
Roger Lee
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