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General Category >> Rubber Side Down! >> Overheating
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Message started by CHMcGregor on 01/12/21 at 16:21:14

Title: Overheating
Post by CHMcGregor on 01/12/21 at 16:21:14

Nice night, 30 degrees Celsius, 86 Fahrenheit, burned the best part of a tank of juice, then hit the main road, city center, stuck at walking pace for like 20 minutes, I actually turned the engine off and scooted along like Fred Flintstone for a while, out of concern for the air cooled motor.

Is it possible in a situation like this, that the motor could get real hot and spit some oil, but actually be fine when it cools down?

Also; I have seen somebody saying that the chrome pieces on top of the head are aesthetic only and can actually clamp the head as it tries to expand with heat, as they are made of different metal and so expand at a different speed, resulting in warping and leaking and that it's best to throw them in the bin; anybody else see sense in that?

https://youtu.be/uqrydmeRQx4

Title: Re: Overheating
Post by Serowbot on 01/13/21 at 06:45:06

Ditch those chrome covers... they're ugly anyway.

Title: Re: Overheating
Post by norm92de on 01/13/21 at 12:01:41

Question. What is the consensus on the chrome covers on the cylinder head.
Impair the cooling? Or not. They certainly restrict access.

Title: Re: Overheating
Post by justin_o_guy2 on 01/13/21 at 13:07:41

You can modify one so you can get the plug.

Ugly?
Not to me.

People have put many thousands of miles on stock bikes.
No problem..
Hot day, moving slowly, maybe not good.

Title: Re: Overheating
Post by norm92de on 01/13/21 at 20:27:29

Already modified. No problem getting to anything.

Title: Re: Overheating
Post by Dave on 01/14/21 at 04:14:36

I installed a cylinder head temperature gauge on my bike.

On most summer days on my bike road rides the head temp is around 240 degrees. If I jump on the interstate and cruise at speed it can get up to 270........if the outside air is really hot it can get up to 280.

Once I was stuck in traffic on a 90 degree day (MM took me through downtown Gatlinburg and showed me what the main street traffic jam looks like). It was moving no faster than walking speed and the head temperature got up to 300 - and like you I shut the bike off and duck waddled the bike for a while. On another ride Oldfeller took us up a steep gravel road that required 1st gear travel on a 95 degree day, and once again the cylinder head got up to 300.

The two extremes for the Savage are traffic jams and extended high rpm use on the interstate - the engine does get warm and it also uses loses engine oil at sustained high rpm. The other extreme is the low speed traffic jams where the engine does not get enough cooling air.

Serowbot is likely our hot weather riding expert as he lives in the desert - but I suspect if you are able to keep the bike moving fast enough for cooling air to reach the engine you are not likely to overheat the bike. However - it might be possible to overheat the bike if you decided to ride 90mph for an extended period on a really hot summer day.

I don't know if the chrome covers have any great affect on the cooling. They could help to keep the air channeled into head so it exits the rear and doesn't exit the side of the head - and they do add some surface area......but at traffic jam speeds there is no air flow.

Title: Re: Overheating
Post by ckahleer on 01/14/21 at 15:40:30

I'm thinking a fan would help in traffic jams. Has anyone tried mounting one?

Title: Re: Overheating
Post by Gary_in_NJ on 01/14/21 at 17:12:54

2028222B2F262631430 wrote:
I'm thinking a fan would help in traffic jams. Has anyone tried mounting one?

Install a fan? Seriously, how often are you sitting in traffic that this actually matters. SMH.

Title: Re: Overheating
Post by Dave on 01/15/21 at 03:02:59

3038323B3F363621530 wrote:

I'm thinking a fan would help in traffic jams. Has anyone tried mounting one?

The Savage does not have an excess amount of electrical energy.....especially at slow stuck in traffic speeds. It is likely a fan would run you out of battery - and once the battery voltage drops the ignition system stops working without any warning.

Title: Re: Overheating
Post by justin_o_guy2 on 01/15/21 at 08:48:15

So, yeah, A fan will keep it from overheating.
Wear comfortable shoes.