British N Gauge Grade Tolerance

[scottmitchell74]

My first layout has a frustrating 3.3 to 4% grade. It's very limiting.

On my new proposed layout I want elevation, but I'm only allowing 2% at most.

I'm wondering how British locos handle 2%?

Thanks!

[ntpntpntp]

There's no single correct answer.   It really does vary by model, and depends on loco weight, number of driven axles, whether or not there are traction tyres,  weight and drag of the train, whether there are curves on the gradient etc.  I would say British N locos generally don't have traction tyres  

2% is generally considered the steepest to go for, but some trial and error is wise.

[Bazza]

I'm wondering how British locos handle 2%?

Some do and some don't, and even those that do will struggle with long heavy trains. It's best to avoid gradients all together (in your layout plans) and if that's not possible then make sure they are as gentle as possible and not greater than 2%.

[Southerngooner]

I took advice from Steve Wright, the builder of James Street, and kept to 1:100 (1%) on my layout. It has 12" radius curves at both ends, and all of my stock, tyres or not, can pull 8 coaches or 25 wagons up the bank and round the corners, which at one end are still on the gradient. If you want long trains (8+ coaches, 25+ wagons) keep the gradients shallow or use locos with tyres; if you need to use steeper gradients be prepared to have to compromise on train length or stock capable of being used.

Dave