Running Temperature, how hot is too hot?

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Running Temperature, how hot is too hot?

Post  Jason Woodall on Fri Dec 04, 2015 12:06 pm

Hi Gang,

I just installed a Trail Tech Vapor and was wondering what temperature to program the warning LED at?

I live in the UK and do 120 mile road trips so I'd like to know the numbers to watch on the dash to keep my engine happy...

If I cruise at 70ish, would my engine even be working hard? How many RPM would you say is the sweetspot for long hauls, and low maintenance?

I'm running a sumo set up, on 15/49 sprockets, if I remember correctly...
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Re: Running Temperature, how hot is too hot?

Post  Mauser on Sat Dec 05, 2015 9:38 pm

After 15 mins mine was reading....125F and after 30 minutes that had risen to 150F....not fast riding just 20-30mph down the lanes... BRP smile

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Re: Running Temperature, how hot is too hot?

Post  Jason Woodall on Sun Dec 06, 2015 3:28 pm

I'm still a bit confused, lol

Nothing new I suppose, that happens a lot...
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Re: Running Temperature, how hot is too hot?

Post  Mauser on Sun Dec 06, 2015 5:00 pm

Confused ?, you wanted temperatures I have given you a couple Smile

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Re: Running Temperature, how hot is too hot?

Post  BuRP on Mon Dec 07, 2015 7:05 am

LOL Jason, you go ride, and note the various temps... then program accordingly BRP smile
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Re: Running Temperature, how hot is too hot?

Post  Jason Woodall on Wed Dec 09, 2015 12:06 pm

Cheers, from reading on here, I don't think I need to put much worry into temperature...
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Re: Running Temperature, how hot is too hot?

Post  Hew on Wed Dec 09, 2015 1:20 pm

Jason Woodall wrote:Cheers, from reading on here, I don't think I need to put much worry into temperature...

The only real issue in the UK is if you leave it ticking over or get stuck and rev it on a trail or in traffic. This is due to it not having a fan. Should you think that you need a fan there is loads of info on fitting one to be found by searching the net.
In the UK if the thermostat is OK as long as the bike is moving it will be fine. If it does start to boil you will hear it start to bubble into the expansion tank.
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Re: Running Temperature, how hot is too hot?

Post  Jason Woodall on Wed Dec 09, 2015 1:44 pm

Thanks for the advice Hew, appreciated...
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Re: Running Temperature, how hot is too hot?

Post  BuRP on Thu Dec 10, 2015 9:02 am

You see Jason,

normally Hew gives sterling advice, however this time I to-tal-ly disagree.... as "hearing it bubble.." is wishful thinking. Better watch it, just pay attention when you're going slow or are stuck, for it will boil then.
But hey, maybe Hew's a young lad with sharp ears still? Bump
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Re: Running Temperature, how hot is too hot?

Post  Jason Woodall on Thu Dec 10, 2015 9:56 am

To be honest, when my pig is running you can't hear f**k all, apart from the airbox and exhaust barking. It sounds like the end of the world, but at a stand still there is a chance I might hear a boil up...

So is the only time to worry about temp is when there is no air flowing through the rads?
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Re: Running Temperature, how hot is too hot?

Post  BuRP on Thu Dec 10, 2015 1:49 pm

Yes, or when going slow & technical.
Simple really, when you will struggle the bike will too BRP smile
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Re: Running Temperature, how hot is too hot?

Post  Jason Woodall on Mon May 30, 2016 8:56 am

It seems to lurk around 160 to 180F when I'm pottering around at 60 70mph. That just seems like a high number. Where would you guys set the orange and red warning lights if you were me please?
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Re: Running Temperature, how hot is too hot?

Post  BuRP on Mon May 30, 2016 9:39 am

Max temp for this watercooled thing is around (+/-!!) 115C .... which you will calculate to Fahrenheit pls.
Check it though, it is the temp where it just not starts to boil yet.
Orange - take your pic, after all you can play around if it bothers you Bump
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Re: Running Temperature, how hot is too hot?

Post  Mauser on Mon May 30, 2016 4:36 pm

30 mins of slow riding today...200 degree's Fahrenheit or 93 degree C
Sorry type 150 should have read BRP smile

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Re: Running Temperature, how hot is too hot?

Post  BuRP on Tue May 31, 2016 11:22 am

Ol' Maus',

with your hasty type of riding you'd best get the higher-pressure rad-cap and a fan.
But lemme guess, you got the cap already? Bump
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Re: Running Temperature, how hot is too hot?

Post  Mauser on Tue May 31, 2016 11:31 am

BuRP wrote:Ol' Maus',

with your hasty type of riding you'd best get the higher-pressure rad-cap and a fan.
But lemme guess, you got the cap already? Bump

Why 150 is only 65 degrees C...that's almost chilly listen up no need for mods for my baby she likes things in the slow lane Smile

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Re: Running Temperature, how hot is too hot?

Post  Jason Woodall on Fri Jun 03, 2016 8:29 pm

Hi Guys,

Thanks for the replies. 115C works out 239F...

My temp never rose above 200F on the 250 mile road trip I just did, so I think I will set the Orange at 190 and the Red at 210....

Thanks again for your help. I want to keep this pig for life so I think I am being a bit over protective with it...

Saying that, my new max speed shown is 119 mph on 17" Sumo wheels, and I still haven't maxed the bike out...
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