Krockodil Pulling power

[Philbahn]

If you look closely at the wheels of the Croc, I recall that the centre drivers fail to touch the rail - the loco is a Bo-Bo in reality. Having said that, though it's not one of the best haulers, it would still shift half a dozen bogies on the old Bredebahn. Flatter is better!

John it moves 5 bogies up the grade without too much slip. Not bad at speed setting 5 and with a R1 curve at the bottom

 

[whatlep]

If you look closely at the wheels of the Croc, I recall that the centre drivers fail to touch the rail - the loco is a Bo-Bo in reality. Having said that, though it's not one of the best haulers, it would still shift half a dozen bogies on the old Bredebahn. Flatter is better!

Isn't it rather the case that the loco is a 1-Bo-Bo-1, with the outer axles unpowered? From memory I think that the central wheels on each axle are powered and touch the rails, but have blind flanges to enable the Krokodil to get around radius 1 curves.

 

[Philbahn]

Isn't it rather the case that the loco is a 1-Bo-Bo-1, with the outer axles unpowered? From memory I think that the central wheels on each axle are powered and touch the rails, but have blind flanges to enable the Krokodil to get around radius 1 curves.

According to the drawings the inner wheel is unpowered making it the front wheel that drives so effectively there are only two axles that drive it

 

[mike]

its a standard lgb gear boxs, 2 axles with a free wheeling addaed on extra axle.. off the two powered axles ,1 has a smaller diamiture wheel, which is flangeless.. in effect, the 1st axles is powered, and touches the rail,with flange, the second is powered, but no flange, and a smaller diameitur wheel which dosnt touch the rail, the last is a free wheeling,un powered axle, .... its job is to carry the middle axle..

 

[Aljosha]

Teehee, yeah, the croc pulling power, a big grief, it looks strong but isn't.
There's only this to do:
- making the loco heavy (=5-6kg total)
- get rid of all R1 curves/points
- get rid of the unflanged middle axle
- replace it with a flanged one
- possibly even replace the rubber tyre wheel so it won't carry no rubber at all.
- possibly level out some of your gradients (I had to do that on my old layout...)

Please let us know whether you're satisfied with the weight increase already!

 

[Philbahn]

Teehee, yeah, the croc pulling power, a big grief, it looks strong but isn't.
There's only this to do:
- making the loco heavy (=5-6kg total)
- get rid of all R1 curves/points
- get rid of the unflanged middle axle
- replace it with a flanged one
- possibly even replace the rubber tyre wheel so it won't carry no rubber at all.
- possibly level out some of your gradients (I had to do that on my old layout...)

Please let us know whether you're satisfied with the weight increase already!

Now pulls 34 axles and power to spare (17 wagons) or 5 rhb coaches. Happy

 

[Steve]

So what have you done to it Phil , you chipped mine and i think it pulls very well

 

[Philbahn]

So what have you done to it Phil , you chipped mine and i think it pulls very well

Removed existing weight and put a dirty great lead weight in

Have you not read the thread/???????????????????//:bleh:

 

[Steve]

So what have you done to it Phil , you chipped mine and i think it pulls very well

Removed existing weight and put a dirty great lead weight in

Have you not read the thread/???????????????????//:bleh:

If i had would i be asking you

 

[KeithT]

the skates were simply acting as brakes.

True Whatlep, but they do pick up power better and they scrape the track clean. My mallet (no skates as built) has now got worn wheels and really needs clean rails and wheels whilst locos with skates run better.

Skates seem to have the benefit of more direct connection to the motor. I have found that applying power direct to the skates gives a quicker start/higher revs compared to applying it to the wheels.

 

[Steve]

the skates were simply acting as brakes.

True Whatlep, but they do pick up power better and they scrape the track clean. My mallet (no skates as built) has now got worn wheels and really needs clean rails and wheels whilst locos with skates run better.

Skates seem to have the benefit of more direct connection to the motor. I have found that applying power direct to the skates gives a quicker start/higher revs compared to applying it to the wheels.

So what is your 0-60 now ?

 

[KeithT]

the skates were simply acting as brakes.

True Whatlep, but they do pick up power better and they scrape the track clean. My mallet (no skates as built) has now got worn wheels and really needs clean rails and wheels whilst locos with skates run better.

Skates seem to have the benefit of more direct connection to the motor. I have found that applying power direct to the skates gives a quicker start/higher revs compared to applying it to the wheels.

So what is your 0-60 now ?

Very little time espec' as the loco has to be off the track to do it!