Scooterotica

OzOAP wrote:Was told by 'an expert' (there are a lot about), that the tall fin ones dont flow anymore air than short ones, coz of the air gap between them.
I use to leave fins 'indian' height but remove everyother one.

Yes; I noted that when you posted the picture before. Looks interesting. That's the thing with cooling. It's a bit of a black art unless somebody can measure the effects of a deep cowl or a short cowl, or even a flywheel with half the blades removed.

**Please note**
My views are purely opinionated and in no way expert, I write like a two year old and can barely put together a coherent sentence, infact I needed my dog to open a bank account for me.
Copyright protected 'Arry.

No; I'm going to do it now because Corrado told me.

Out of interest can anyone confirm for me the difference between long and short fins is 7mm as i've one to machine myself next week and I cant be sure of the difference. Last time I did one, I bolted it through the centre hole to the bed of a bridgeport miller and milled the fins off to length.

I think a miller is probably the way it's done anyway. Sticking it on a lath and trying to turn down the fins sounds a bit dodgy to me.

Doom Patrol wrote:I think a miller is probably the way it's done anyway. Sticking it on a lath and trying to turn down the fins sounds a bit dodgy to me.

works ok by turning

dont forget you need to ensure the flywheel is balanced correctly

I do mine in a lathe no problem ,just take steady sweeps.As for the number of fins the old MSC plastic fans didn't have many but I never had a problem with cooling, likewise with a varitronic and Indian cowl I have on my TS1 now and the fins are miles away from the cowl.