Rat Bike Project

[willedoo]

I was looking up some youtube videos last night on fans and some interesting stuff there. One mob were doing a lot of comparisons of temperatures before and after adding fans in different situations. They seemed to do the job ok. They found the highest rear cylinder temperature without fans was out on the highway with the engine working hard. Even though they were going fast, the rear cylinder wan't getting much cooling air.

[facthunter]

Intuitively yes, But airflow around bike engines is complex and sometimes Oil from the seat area  ends up well forward. The front Cylinder on a Vee twin works the Hardest and usually has the Bluer Pipe. Any idea Why?   I like V twins , There's a LOT right about them for a Bike AND a small Plane.Nev 

[Litespeed]

I love flat twins and Guzzi V twins.

 

Others not so much.  But do appreciate a high performance twin sport bike.

 

I am resisting the cruiser v twins until my back wont allow sport riding.

 

You still riding Nev ?

[Marty_d]

1 hour ago, facthunter said:

 I like V twins , There's a LOT right about them for a Bike AND a small Plane.Nev 

Interesting, I thought most v twins would have too much vibration for a plane - I know mine would!

Mind you a purpose built one like the Spirit might be less like a washing machine.

[pmccarthy]

I think the first Anzani was a v twin.

[facthunter]

Torsional vibration wise they are far better. Never have 2 _Pistons stopped at the same time. Nev

[onetrack]

I need to find a T-Shirt that says, "Harley-Davidsons - Destroying Hearing and Promoting Intense Hatred from Peace-Loving Neighbours Since 1911!"

 

I really don't understand why so many H-D owners can get away with open exhaust systems with a road-licenced vehicle.

[facthunter]

Plenty of 4 cylinder Buzz Bombs do it also.  Not Pleasant for the rider as well as the community. Clamp down on the OBVIOUSLY noisy ones. Engine Brakes on trucks are sometimes worse.  They've been going since 1903 and the early ones were Known as "Silent Grey Fellows"  The Later ones meet all the required sound restrictions , and always have. You could hardly Hear my 1916 as it Passed you. . Great bike at that time. Get you anywhere..  Nev.

[onetrack]

Almost without fail, anytime I see a H-D approaching on the highway, and I have my window down, I wind it up. The owners seem to specialise in ensuring they damage your hearing as they overtake or pass. No Jap bike comes anywhere near them.

[facthunter]

Some do.  They are antisocial. Nev

[willedoo]

The straight-through drag pipes seem to appearing everywhere these days. Not so bad with a quiet steady rider, but I think a lot of others like to crank that throttle on just to make a racket. A mate of mine is putting Verex drag pipes on his new Bonneville, about $1,400 for the pair I think it is. He was a bit concerned about getting pulled up with them, but he's an old bloke and rides steady so should be ok. The standard pipes on his Speedmaster sound like a sewing machine. He checked up on putting the drag pipes on it and seems to think the warranty will be ok.