Rotax radiator leak

Re: Rotax radiator leak

by Roger Lee » 10 years ago

Roger Lee

131 5.38k 5.44k

Out of curiosity how old is the coolant and what type is it?

I would put a new one in, but;

(if you are going to write it off anyway maybe you could have someone that can weld this material take a shot. Then if it doesn't work then no loss. Try a radiator shop and just see what they say)

Maybe the hose in this area has some sideways load on it and couple that with enough vibration may have caused a leak?

Could have been a bad weld?


Just a note**

Before you remove it check for electrolysis. Take a voltmeter and touch a good ground like the battery negative if you can and take the other probe and touch the radiator and see if you have any reading. It should be zero. I have seen this quite a few times in cars, but haven't seen it with a Rotax.
IF you have any reading you need to check the ground to the engine. I have seen where this happens and by grounding the radiator fixes it.

Maybe Rob or someone has or can chime in.

---

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Re: Rotax radiator leak

by Kevin Stewart » 10 years ago

Kevin Stewart

5 184 0

When mine had a pin hole in it I took it to an automotive radiator specialist. He welded, repainted and pressure tested it for about the equivalent of $60. He said that over the years he had repaired a number of light aircraft radiators.

I have had no problems with it since the repair about 4/5 years ago.

Kevin

Re: Rotax radiator leak

by Neil Cooper » 10 years ago

Neil Cooper

23 67 92

the coolant is about three years old I guess. The type is from auto shop and is the same type always used ( see pic)

image_2015-07-20-2.jpg (You do not have access to download this file.)

Re: Rotax radiator leak

by Neil Cooper » 10 years ago

Neil Cooper

23 67 92

also pointed out on forum that there appears to be wearing in the corner also