UK Karting - Notice Board (2-Stroke Karting) : Re: Rotax Max : Fit thermostat or not?

Notice Board (2-Stroke Karting)

Re: Rotax Max : Fit thermostat or not?
Posted by 'Dazz' on 24 May 2012 @ 08:17

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DazzJoined: May 2006
Total Posts: 1
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"I think Dazz is just after an 'objective' answer rather than the 'subjective' answers. Even though they are probably correct."

Exactly right. I am an Engineer so I don't just blindly accept opinions without supporting facts and evidence.

Don't take this personally. You are the victim of BS karting advice I have seen and heard over the years. My view is that if your opinion is sound, it should be supportable with facts, data and evidence.

So the facts as I understand them are as follows.

Early Rotax engines didn't have a thermostat.Some very experienced Engineers at BRP then decided it was a good idea to add one. The modification included a larger radiator. I can only assume that the larger radiator compensates for any reduction in flow through the thermostat. I also have to assume that fitting a thermostat is a factory recommended option.

The Rotax thermostat looks like a smaller version of a standard car thermostat which stay open when they fail and are therefore fail-safe. I have not seen any evidence that a Rotax thermostat has or can reduce engine reliability or cause damage (seizure).

I expect that a thermostat will avoid the use of shutters over the radiator. Automatic regulation of water temperature will allow me to concentrate on driving. It is also one less thing I have to worry about in the pits. That is a big plus for me.

I expect the engine to warm up faster without cold water circulating. That is good for engine life. It will also reduce the risk of cold seizure.

Based on the above facts, there is no obvious downside to fitting a thermostat. There are advantages in fitting one.

I think it is likely (no evidence to support this opinion) that the risk of a cold seizure without a thermostat is higher than the risk of a seizure with a thermostat.

Dazz

Message Thread:

Rotax Max : Fit thermostat or not? by 'Dazz' (23 May 2012 @ 9:57)

Re: Rotax Max : Fit thermostat or not? by 'Ditch' (23 May 2012 @ 11:06)

Re: Rotax Max : Fit thermostat or not? by 'BanzaiBoy' (23 May 2012 @ 11:53)

Re: Rotax Max : Fit thermostat or not? by 'Dazz' (23 May 2012 @ 21:41)

Re: Rotax Max : Fit thermostat or not? by 'Dazz' (23 May 2012 @ 21:11)

Re: Rotax Max : Fit thermostat or not? by 'John' (23 May 2012 @ 22:19)

Re: Rotax Max : Fit thermostat or not? by 'Dazz' (23 May 2012 @ 23:38)

Re: Rotax Max : Fit thermostat or not? by 'John' (24 May 2012 @ 5:42)

Re: Rotax Max : Fit thermostat or not? by 'Danlee' (24 May 2012 @ 7:09)

Re: Rotax Max : Fit thermostat or not? by 'Dazz' << You are here!

Re: Rotax Max : Fit thermostat or not? by 'itpro' (25 May 2012 @ 10:29)

Re: Rotax Max : Fit thermostat or not? by 'Bob' (24 May 2012 @ 7:29)

Re: Rotax Max : Fit thermostat or not? by 'Dazz' (24 May 2012 @ 8:27)

Re: Rotax Max : Fit thermostat or not? by 'BanzaiBoy' (24 May 2012 @ 9:11)

Re: Dazz by 'John' (24 May 2012 @ 11:51)

how you remove it? by 'GR2' (24 May 2012 @ 12:23)

Re: how you remove it? by 'Dazz' (25 May 2012 @ 4:41)

Re: Rotax Max : Fit thermostat or not? by 'NikG' (24 May 2012 @ 14:50)

Re: Rotax Max : Fit thermostat or not? by 'rjbcar27' (24 May 2012 @ 15:32)

Re: Rotax Max : Fit thermostat or not? by 'Dazz' (25 May 2012 @ 5:07)

Re: Rotax Max : Fit thermostat or not? by 'ChristianWood' (25 May 2012 @ 9:22)

Re: Rotax Max : Fit thermostat or not? by 'itpro' (25 May 2012 @ 12:42)

Re: Rotax Max : Fit thermostat or not? by 'fatboynobby' (25 May 2012 @ 21:35)

Re: Rotax Max : Fit thermostat or not? by 'itpro' (26 May 2012 @ 0:30)

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