re-motor a Hornby APT..........help please ?

Discuss Hornby Model Railway products and related topics here. This includes (Lima, Rivarossi, Jouef, Electrotren).
DixieDean
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Re: re-motor a Hornby APT..........help please ?

Postby DixieDean » Mon May 22, 2017 9:59 pm

I've decided to go down the Heljan Class 27 route and have ordered a chassis to deconstruct!

DixieDean
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Re: re-motor a Hornby APT..........help please ?

Postby DixieDean » Wed May 24, 2017 10:34 pm

Chassis has arrived. Anyone know how to get the body of the power car and the driving trailers apart?

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D605Eagle
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Re: re-motor a Hornby APT..........help please ?

Postby D605Eagle » Wed May 24, 2017 11:05 pm

If you google APT coaches theres an extensive post on rmweb from many years ago about making the missing car from the set that has clear instructions on how to get in to the powercar and the ends. It is important that you follow the instructions as its quite easy to break things otherwise

DixieDean
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Re: re-motor a Hornby APT..........help please ?

Postby DixieDean » Fri May 26, 2017 9:38 pm

D605Eagle thanks for that advice, I've now managed to get the things apart.

Can I ask, did you use a Heljan 26/27 Chassis for your conversion, and if so, how did you go about it?

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D605Eagle
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Re: re-motor a Hornby APT..........help please ?

Postby D605Eagle » Sun May 28, 2017 12:39 am

Sorry but I've never remotored an APT If I did I would probably use a Eurostar power bogie as I hear they fit quite easily and you can buy them second hand of peanuts.

DixieDean
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Re: re-motor a Hornby APT..........help please ?

Postby DixieDean » Wed May 31, 2017 5:39 pm

Right, a bit of an update. Got a chassis and dismembered it. Have cut relevant pieces from APT bogie frames and from the Heljan 27 drive units. Have also filed Heljan chassis to a shape and cut off the ends such that it will fit in the APT power car, hopefully on top of a bass reflex speaker. Picking up the chips this weekend at DEMU.

A question: What glue should I use to glue the plastic of the Heljan drive units to the steel or zinc alloy (not sure which) of the APT bogie frames?

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RAFHAAA96
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Re: re-motor a Hornby APT..........help please ?

Postby RAFHAAA96 » Thu Jun 01, 2017 10:29 am

If you Google specialist glues for plastic to metal bonds you will get good info from 3Ms, Masterbond, DirectPlastics, Shop4Glue and others with a wealth of information about why some plastics are notoriously difficult to glue and what to use.

Some will even stick to polythene and teflon (e.g. StarLoc Universal).

It is a complex subject but some of the modern foaming adhesives work as well as the new modified epoxies.
Rob
RAF Halton Brat - 96th Entry
http://www.halton96th.co.uk

DixieDean
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Joined: Sun Jul 10, 2016 4:51 pm

Re: re-motor a Hornby APT..........help please ?

Postby DixieDean » Fri Jun 02, 2017 9:57 pm

Cheers, I'll have a look those in detail

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Re: re-motor a Hornby APT..........help please ?

Postby DixieDean » Sat Jul 15, 2017 6:10 pm

OK. The job is all done now.

I've remotored the power car using the drive chain from a Heljan Class 26, adding sound. The drive towers were installed using Evostick Impact adhesive. I did have to remove the inner retaining lugs on the bogies so that the drive shafts could be installed. However, without them, the bogies had a tendency to fall out. Therefore they were replaced with bent pieces of brass, superglued to the metal below where the lugs were.

I bought 2 of the lighting set off ebay and installed these together with a chip and speaker in the driving trailers. I got the 3 ESU LokSound v 3.5 sound chips as a job lot from legomanbiffo. Lots of new skills learned and in the end went OK.

Left to do are to paint the interiors and replace the wheels. If I do replace the wheels, I do need to get around the problem of current collection on the Driving Trailers, as I am not sure that there are finescale equivalents of wheels which are insulated at one end, as on the originals. I do note however that there is an Everard Junction video on You Tube about this very subject


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