I think I know where you're headed with that question. The box said Blazecut deployed at 220 degrees. I took it on a 100 mile drive this morning and kept expecting it to happen. My oil temp reached about 200 as I cruised between 75 and 80 for more than an hour. No problem 😊👍.
@PaulEllis posted:I think I know where you're headed with that question. The box said Blazecut deployed at 220 degrees. I took it on a 100 mile drive this morning and kept expecting it to happen. My oil temp reached about 200 as I cruised between 75 and 80 for more than an hour. No problem 😊👍.
I'd been recently thinking about the BlazeCut T100E @ 39.37" length. What's pretty much sold me on this unit is it utilizes a "clean" extinguishing agent that is claimed to be similar to Halon (banned in the US) and Halotron (my Amerex extinguisher). I'm MOST impressed with the description claiming this agent leaves no residue that would otherwise make an even bigger mess in the engine compartment. 
The T100E model specs go on to state the system detonates "when Temps inside the protected enclosure rise above a critical threshold of 120C/248F. I do acknowledge that's damned hot, but returning from last year's West Coast Cruise I was tortured by driving hard for 250 miles in 106F heat. 
More than once I noticed the oil temp "pegging" all the way, so I pulled over, opened the lid, and let the compartment "cool" with the 106 degree air. So-o-o, I really don't think I'm being overly paranoid being a little concerned with a BlazeCut exploding without flames erupting. 
The outside temp here in Phoenix hasn't gone below 95 in weeks. It went as high as 118 a couple of days ago. It has to be getting pretty warm in the engine compartment.
Perhaps tomorrow I'll measure the fan shroud with an IR gun out of curiosity.
At that temperature Paul, you must have to wait till late in the evening or early morning to take a ride. I would get sun stroke in those temperatures.
Here in Florida, assuming it isn't raining in the evening, that's when it cools down enough, mid 80's, to cruise out over the bridge across the Choctawhatchee Bay and watch the sunset.
Midday to early afternoon? Not unless you want to come back looking like bacon.
I feel fortunate to have the Cayman for daytime and the Speedster for evenings. I'm gonna make the most of this for as long as possible, but the Speedie may be on the block come spring. I just don't need as many cars as we have unwisely accumulated and I'm out of room.
I think your oil temps could easily exceed 250F and your heads could hit 400 before your engine bay got close to the Blaze Cut trigger temp. It's not going to spring if there isn't a fire.
@IaM-Ray posted:At that temperature Paul, you must have to wait till late in the evening or early morning to take a ride. I would get sun stroke in those temperatures.
I hear you...but it wasn't just a "ride." I was returning from the SOC Cruise and I was 332 miles from home. 
As it was, I stopped (more like collapsed) after 225 miles and spent the night at a Motel 6. I left early the next morning and finally made it home by 10am. I remember those final 107 miles taking 3 hrs. to go through the San Francisco Bay Area in Monday morning commuter traffic. My only "souvenir" was one helluva Farmer's Tan/burn! 
Trust me, I avoid taking Speedy out of her locker whenever the forecast is more than 90 degrees.