Search found 32 matches

by mmmbeeer
Fri Nov 02, 2012 11:36 am
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Can't tell if it's running slower than it should without seeing a video. I measured the loop and worked out the dc loco was doing an average scale speed of 110MPH, it didn't appear to be that fast to me, so it was going like a bat out of hell. I didn't have time to measure the dcc loco, I'll do tha...
by mmmbeeer
Thu Nov 01, 2012 3:37 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Can't tell if it's running slower than it should without seeing a video. I'm not going to convert it back to dc again as I've put the decoder back in. You have given me an idea though. I'm going to measure the loop, do the maths, and work out lap times for variuos speeds. It'll be an average 'cause...
by mmmbeeer
Thu Nov 01, 2012 2:55 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Hi Its hardly surprising with some 15 volts dc on the rails. Must go like a rocket (Not the old loco!) and the motor windings will be reaching almost burn out failure conditions! It didn't reach re-entry speed but it did stay on the track. Not quite scale full speed I think, with no carriages in to...
by mmmbeeer
Thu Nov 01, 2012 2:05 pm
Forum: General Model Railway Discussion / News
Topic: DCC question
Replies: 14
Views: 1211

Re: DCC question

If you remove the dcc blanking plug to fit a decoder don't chuck the blanking plug. As I discovered last night, it's not blank at all; it does make connections for dc running. So when I converted a dcc loco back to dc for testing I had to fish the "blanking plug" out from the bottom of an ...
by mmmbeeer
Thu Nov 01, 2012 1:55 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Here's what I tried last night: 1. ran a dc engine at top speed and measured supplied voltage to track - 11.5v dc. 2. Gave dcc engine wheels thorough cleaning, ran on dcc at full throttle - still ran slow. Disconnected dcc decoder and replaced blanking plug, ran on dc at full throttle, engine ran a ...
by mmmbeeer
Wed Oct 31, 2012 3:25 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

poliss wrote:Do you mean measure the output of the Elite? Can't be done accurately with a standard multimeter.


no - the dc controller
by mmmbeeer
Wed Oct 31, 2012 2:44 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Hi Flashbang - I see you were answering similar questions regarding a Bachmann Tornado nearly 3 years ago on Model Railways forum. Yeh - higher than spec dc output from trainset controller makes sense, exactly what I've been using for dc (some would argue the Elite is similar I know). I'll measure i...
by mmmbeeer
Wed Oct 31, 2012 1:38 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

poliss wrote:The standard Hornby R8249 decoders do not support CVs 2, 5 and 6 so you can't adjust them.


doooh!!!

Any suggestions which decoders do support cv5? I suppose I can read what Hornby cv5 is set to and if it's max then that's that?
by mmmbeeer
Wed Oct 31, 2012 1:34 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

I've serviced the locos, the motor is the the main body on both. Wheels cleaned and electro-lub'ed, bearings, couplings oiled. They ran OK on dc, perhaps I'll recheck them on dc. I'll definitley look at cv5 and bump it up if I can, or try different decoders when they arrive. If that don't work I'll ...
by mmmbeeer
Wed Oct 31, 2012 1:25 pm
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

I have serviced the locos, they have the motor in the main body. I cleaned the wheels with one of those nylon pen brush thingies and electro-lub'ed them. I also oiled all the bearings. But I haven't looked at the gears. The thing is, they ran ok on dc but really slow on dcc. Spose I can recheck on d...
by mmmbeeer
Wed Oct 31, 2012 11:57 am
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Looks like the JMRI Layout Editor can do occupancy as well as controlling engines, turnouts, signals, etc. I'll definitely take a look at the JMRI forum. Well I think that's gonna save me 50-60 quid which my wife will definitely approve of.
by mmmbeeer
Wed Oct 31, 2012 11:33 am
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Well worth a look. If you are prepared to spend a little time on it then JMRI is a really powerful peice of kit I was thinking of buying the Hornby dcc control software, so I looked at the trial version. It was very retro but worked OK. At first glance the JMRI suite could offer a free solution ins...
by mmmbeeer
Wed Oct 31, 2012 11:20 am
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

capacitors usually affect the slow running if memory serves, but it cant hurt to give it a try What are the locos you are having issues with? One is a Hornby Mallard, can't remember model number but it was a limited edition, one is a Hornby Railroad Falcon, both bought second hand on eBay. They're ...
by mmmbeeer
Wed Oct 31, 2012 11:16 am
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

as you are using an elite download the JMRI software and connect your PC to the Elite http://jmri.sourceforge.net/ Within the JMRI package is a program called decoder pro which you can use to program CVs. A very useful feature of Decoder pro is the ability to "backup" the deocoder setting...
by mmmbeeer
Wed Oct 31, 2012 11:11 am
Forum: General Model Railway Discussion / News
Topic: DCC Engines Running Too Slow
Replies: 35
Views: 4366

Re: DCC Engines Running Too Slow

Just remebered, read somewhere on t'internet - "on dcc engines recommend removing the suppressor capacitor as the decoder will provide suppression and engine will run better". Could make sence- a capacitor across the feed to the motor could shunt some of the pwm signal????

Go to advanced search