47164 Posted November 16, 2009 Share Posted November 16, 2009 Having often read about powering both bogies on Lima or Hornby locos, has anyone any views on the upsides / downsides of doing this, and any tips on the wiring /pick-up's - as most articles seem to skip this rather vital area of info, and its looks an interesting project for a wet Nov day. Link to post Share on other sites More sharing options...
RMweb Gold Dagworth Posted November 16, 2009 RMweb Gold Share Posted November 16, 2009 I've got various old locos with double power bogies, my Hornby 58 is still the single most powerful thing I own. I've also got a double powered Hornby 86 and lima 87. Both the ACs upset my DCC system for some reason though. Wiring on double powered locos is simple, each bogie will pick up from one side, and feed directly to its motor. Link the feed from that motor to the non connected side of the other motor, and vice versa. The black wheels here are insulated, and will normally have traction tyres. Note that the red and blue leads needs to go to the same ends of the loco on both bogies, and thus the opposite connections on the motor. Hope that helps. Andi Link to post Share on other sites More sharing options...
John C Posted November 16, 2009 Share Posted November 16, 2009 Double motered a Lima 52 some years back and added extra weight still more powerful than any of the new stuff but nowhere near as good controlability wise as the new stuff. Got the parts to do a second one but still havn't got round to it yet. Link to post Share on other sites More sharing options...
Horsetan Posted November 16, 2009 Share Posted November 16, 2009 Similar thing here: double-motored Hornby Hymek, with Ultrascale wheelsets. Not bad. Link to post Share on other sites More sharing options...
47164 Posted November 18, 2009 Author Share Posted November 18, 2009 Many thanks for all the responses. Regards Link to post Share on other sites More sharing options...
298 Posted November 18, 2009 Share Posted November 18, 2009 Hornby are easier to do than Lima, with the latter you need a complete new chassis and alot of surgery to maintain the strength, especially if extra weight is added. It is important to bench test pairs of motors to find ones that start at the same time and run at equal speeds, this can be an issue with lower-powered controllers as one motor can start and take all the current whilst the other stalls. You can also replace the traction tyred wheelsets with plain metal ones and add extra pickups, for improved running. I've done a few AC electrics this way, but beware of an 86 with a hole in the top of the motor block, as it is from an APT and certainly can shift. My model of 86419 has a pair of these motors, and it can handle 30+ coaches.... Link to post Share on other sites More sharing options...
k9-70 Posted January 10, 2010 Share Posted January 10, 2010 Wiring on double powered locos is simple, each bogie will pick up from one side, and feed directly to its motor. Link the feed from that motor to the non connected side of the other motor, and vice versa. The black wheels here are insulated, and will normally have traction tyres. Note that the red and blue leads needs to go to the same ends of the loco on both bogies, and thus the opposite connections on the motor. Hope that helps. Andi Another method of wiring two Ringfield motors to operate as a single motor using the live chassis. K9-70 Ps; sorry Andi, for using your image. Link to post Share on other sites More sharing options...
railroadbill Posted January 31, 2010 Share Posted January 31, 2010 re fitting new wheels (ultrascale) to Hornby/Lima motor bogies, the existing powered wheels have a moulded gear fitted up against the back of each wheel, which appears to fit by means of a large bush in the wheel. Do replacement wheels fit over the gear bushes or should the bush be cut off? Thanks, Bill Also, are ultrascale the wheels to use or are other makes ok? Link to post Share on other sites More sharing options...
Bruciethefish Posted February 3, 2010 Share Posted February 3, 2010 Hi Bill, I think the Ultrascale wheels come with the gears built in, so you just have to fit them in place of the originals... Link to post Share on other sites More sharing options...
hairyhandedfool Posted March 4, 2010 Share Posted March 4, 2010 I have fitted a Hornby 86 and 90 with twin motors, for use on DCC, which have two decoders with the same address. The 86 had a little extra weight added, but is easily capable of propelling eight Lima mk3s and a Hornby mk4 DVT up a 1:50 gradient Excuse the poor quality of the video.... The pick up on each bogie was used to feed both motors/decoders (but remember to swap the orange and grey wires on one motor!) Link to post Share on other sites More sharing options...
34theletterbetweenB&D Posted March 4, 2010 Share Posted March 4, 2010 Hornby are easier to do than Lima, with the latter you need a complete new chassis and a lot of surgery to maintain the strength, especially if extra weight is added. .... A length of plastic U channel (Evergreen or similar) has been my friend for such surgery; a single substantial rigid piece cemented over large areas on both chasis halves makes for a much more stable job, Lima chassis often starting out pretty floppy... ... bench test pairs of motors to find ones that start at the same time and run at equal speeds .... Doubly vital if they are so old as to be worm drive. If they are the supersonic velocity Lima or Hornby pancake/ringfield variety, and this project is for DC control, it may be worth experimenting with the motors in series to tame the maximum speed and see if better low speed control results. Did this with a Hornby 47 and two of their two axle drive ringfields, and a much more civilised beastie was produced. Not as good as the other 47 with a pair of the early 3 axle drive ringfields wired in parallel, but these motors were becoming hard to find. Link to post Share on other sites More sharing options...
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