Bachmann Standard 5MT

Stop there. There is something wrong with your standard 5. I have 4 x std 4 tanks and 4 x std 5. All The standard 5 will hadle a rake of about 8 bachmann mk 1 coaches on the layout where as the std 4 are only ok with about 6, thus all my std 5 outperform in pulling power my std 4. Therefore i have deduced your std 5 is faulty.

Return to shop.

(I accept I will not be running

"Edward Bray" wrote

Mine will manage a mixed 6-coach train of Bachmann Mk1s and Hornby Gresleys, rather less than the more recent Ivatt 4MT will haul. My Hornby Black 5 has almost identical haulage capabilities as the Bachmann Standard 5.

I looked at the Hornby 5 and couldn't see any satisfactory way of adding weight, but have not yet tried with the Standard.

John.

"Edward Bray" wrote

When I attached said wagons to the Bachmann Standard 5MT it would not move at all and the wheels just spun on the track. Taking all the coaches off and just leaving the 25 wagons the locomotive will move but as soon as it has gone around a corner it starts to slip again.

Eddie, What radius track are you using out of interest ? (Noting Simon and Johns posts)

Andy

Hi Andy, PML and John,

Minumum radius of the curves is 24", and whilst I realise that it is better to have a larger radius than this, it is not as if any of my other locos, struggle with it. I was concerned as the Standard 4MT pulls much more around the same circuit.

I cannot believe the pulling and accelerating power of the Class 40 though, I have had it pulling everything I own that will freewheel and it still accelerates to top speed even around the curves (scale speed of 400mph).

The Standard 5MT seems fine except for a lack of weight, as soon as I fit some weight to the Loco it comfortably pulls the full train and 25 wagons and 5 coaches is a fair old weight, just tried pulling them around the circuit by hand, and I wouldn't want to do that for too long.

Tomorrow, I am going to get my fishing pull scales and see just how much pull it requires to pull this amount of stock.

Eddie.

A few months ago I was doing some load tests up various inclines to test out whether I could include an incline in a layout design. Whilst my results weren't as bad as this the std 5mt did perform badly compared to other locos, in particular the std 4mt tank so generally speaking its performance was poorer than other Bachmann locos. Interesting the Bachmann locos generally faired much poorer than the Hornby locos aswell.

Kevin

(b) over 40 years ago, in Model Railway News, Jack Newton put forward very convincing arguments that model locos should weigh 1 ounce per ton of adhesive weight for the prototype. This is a good figure to aim for. Alternatively, add as much weight as you can before the loco stalls rather than slips when you drive it against a buffer stop.

I am keeping quiet on this ;-) Simon

"John Nuttall"

Adding so much weight that the loco that the loco stalls rather then slips is a bad idea.

It's also one of the better reasons NOT to add traction tyres. Wheels that don't slip, as in adding too much weight and or traction tyres will burn out your motors.

We also need our locos to be able to pull better than the prototype as we typically use much steeper grades and our curves are so sharp that most locos would have to creep around even our most generous curves.

-- Cheers

Roger T.

Home of the Great Eastern Railway

Roger, we are both saying the same thing. You seem to have read into my post the exact opposite of what I said (or intended to say).

For the avoidance of doubt, you can add weight until the loco just continues to slip and not stall.

Jack Newton's calculations were based on exactly the premise in your last paragraph, although I see that my original post included the wrong numbers - it should be one ounce per *three* tons of adhesive weight.

It's all very well to say 'Add weight to the loco.' but with the typical British tender loco. model actual weighting arrangements, and I've no idea how this is arranged on the Bachmann 5MT, it is difficult, depending on the internal space available to find places to put weights and then to make sure that they stay in place. On an HO model of a V.R. 4-6-4 R class loco, I had to cut small pieces of lead to insert in the smoke box, and another piece was glued to the inside of the cab roof. One has to be careful not to affect the balance of the loco, too much weight at one end or the other is not good. Regards, Bill.

"John Nuttall" wrote in message news:43c83d44$0$11102$ snipped-for-privacy@news.optusnet.com.au...

"William Pearce" wrote in news:43ca0390$0$18198$ snipped-for-privacy@news.optusnet.com.au:

Use fine lead shot, put it where you need it then drip candle wax over it. Obviously lead shot doesn't weigh as much as slid lead on a volumn vs volume basis but you can often add more as you can get it into smaller and more awkward places (*). Also the wax can be cleaned away without leaving a mark if for some reason you later with to remove the lead.

(*) Examples being, actually inside bogies, under wagon underframes, smokeboxes, bunkers, inside side/saddle tanks.

The finer the shot the easier it is and of course easier to balance.

"Chris Wilson" wrote

Hi Chris,

Can't see the point in adding ballast weight to bogies (other than to stop them derailing) as this does not put extra weight on the driving wheels and does not increase traction.

John.

"John Turner" wrote in news:dqeboj$v0a$ snipped-for-privacy@newsreaderm1.core.theplanet.net:

Sorry I was drifting of to the general rather than the specific, when I was talking of bogies I had carriages and certain frieght stock in in mind - to keep the wieght as low as possible to stop them going out of balance.