Cooling Fan Breaks

[cantdrive55]

So I haven't ridden much lately because my cooling fan seems to blow up on me all the time. I've gone through about 4 fans and it drives me nuts. I am using the BWS 100cc fan which is bigger than the standard to help in cooling but I think it is more susceptible to shattering.

I've got an Evo so the rpms are high but there must be some way to stop this from happening...

 

[Jasper V]

I've had the same problem on a piaggio engine.
I solved the problem by machining an aluminium fan.

 

[cantdrive55]

Oh man how much did that end up costing? I figure that would be a good solution but I was afraid that would cost a good chunk of money.

 

[Jasper V]

A friend of mine made a small serie, because more racers in the AC cup had the same problem. In the end they costed €150 each.

 

[Mexicano]

A friend of mine made a small serie, because more racers in the AC cup had the same problem. In the end they costed €150 each.

JasperV,

Can you share a picture of one of those...

Thanks!

 

[Jasper V]

I will take a picture next week.

 

[Mexicano]

I will take a picture next week.

Thanks Jasper V!..I will really appreciate this.

Regards,

 

[Joël]

It is really not recommended to put a 100cc fan on a Evo equipped 50cc bike. The 100cc fan is optimized for a much lower rpm rate and will consume a couple of horsepower when used on a racing cylinder that makes double the revs.

You must not forget that the standard fan gives a lot more air flow when it is turning harder with the Evo cylinder. Therefore you can even lower the fins and still have enough cooling flow.
When lowering the fins, the fan will be less breakable, because the stress on the fin corners decreases.

 

[Jasper V]

Some pix, as I promised.

 

[ruud.]

what is that thing apart gefräst zeg. wel mooi vinnetje zo :W

 

[Mexicano]

Some pix, as I promised.

Thanks Jasper V!...are those fans available for 100 c.c. engines? Bigger ones?

Regards,

 

[Jasper V]

No, it was only available for a 50cc piaggio engine, because about 90% of the riders used that engine in the AC cup.


Btw, this fan is for sale.

 

[Mexicano]

No, it was only available for a 50cc piaggio engine, because about 90% of the riders used that engine in the AC cup.

Btw, this fan is for sale.

It's a shame.....I would love to have one for Mina 100 c.c. engine.....

Regards,