009 Society Members Forum

Modelling => Locomotives => Topic started by: Ian Jones on February 16, 2024, 14:07

Title: ARU Model B4008 N-16 Chassis
Post by: Ian Jones on February 16, 2024, 14:07
Hi,

Has anyone tried this chassis before?

https://www.plazajapan.com/2010010000257/ (https://www.plazajapan.com/2010010000257/)

If so, what was your experience?

I'm looking at using this on a Hunslet 040DM.

Kind regards

IanJ
Title: Re: ARU Model B4008 N-16 Chassis
Post by: Graeme Dunbar on February 16, 2024, 14:15
I don't have that chassis, but I do have a couple of locomotives made by or for Yoshiya Kobayashi of Narrow Garage that I think are built from Aru Models kits and they run very nicely.

If the Aru Models quality is as it was they should be good chassis.
Title: Re: ARU Model B4008 N-16 Chassis
Post by: B.Meldon on February 16, 2024, 15:38
I agree. Yoshiya Kobayashi's items are good quality so it should run well. The main issue with these chassis is that the layshaft gear wheel is a bit obvious and hard to hide.
Title: Re: ARU Model B4008 N-16 Chassis
Post by: Ian Jones on February 16, 2024, 23:16
Hi,

Thank you for your input - I might well take a punt on one of those then.

I picked up a couple of Tsugawa TU-16 chassis which are very good for the price, but the ARU 4 coupled chassis will look better under my Hunslet body design that I've had 3D printed, than the non coupled 4w Tsugawa ones.

Kind Regards

IanJ
Title: Re: ARU Model B4008 N-16 Chassis
Post by: Graeme Dunbar on February 17, 2024, 08:48
If you like the Tsugawa chassis, my feeling is that the Aru models one possibly gives it the edge in performance due in part to the large spur gear reduction direct from the motor. I understand that is the more efficient approach, having a worm drive at the slow end of a gear chain.
Title: Re: ARU Model B4008 N-16 Chassis
Post by: B.Meldon on February 18, 2024, 17:43
The gearing on the Tsugawa TU-16 chassis causes issues when starting from a stand.
You have to turn the controller up higher than is ideal to get it moving.
This is an effect known as 'coging'basicaly the gearing is too cource for the size of the axle gear.
This is not an issue if the loco is going to be used going round and round at a comparitivly high constant speed, as was the intenstion of the manufactures, but is not at all good for stop-start opperation and useless for shuntting.

The ARU Model chassis have finner gearing and do not have this problem so in regard to running quality are a far better choice.