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Offline ocram63_uk  
#1 Posted : 01 October 2018 14:50:56(UTC)
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ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 704
Location: England, Suffolk
Hi everyone, I've found on ebay a dealer that is selling only the Swiss green Crock, road number 13302.
The seller says that the loco has been converted with a 5 pole motor and is digital.
He also says that this conversion makes it equivalent to the Marklin 37300 numberig logic, which I think is rubbish.
I believe the retrofitting has been done after the loco was bought as in the Marklin 3300 box the 2 locos were analog.

Does anyone have this Crock ?
How does it run once it is converted ?

Would it be cheaper for me to buy an analog one and convert it myself ?

Thank you
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Offline Nigel Packer  
#2 Posted : 01 October 2018 15:26:54(UTC)
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Nigel Packer

United Kingdom   
Joined: 11/02/2006(UTC)
Posts: 683
Location: Cheshire, UK
Well, I have an unmodified one, and I have most other versions of the crocodile too.

What is it in particular that you want? Is it that specific model of the crocodile? Or any crocodile of that (metal-bodied) generation, such as the 3756 which had 5-star motor and decoder, and close-couplings, from the factory?

It's hard to say how well a converted loco will run, as it depends on how well the conversion was done! With a competent conversion, running should be pretty good. But it's a gamble to buy something like that without seeing it.

There are many Märklin crocodiles to choose from, so it depends on your constraints (price, etc) which would be your best option.

Nigel
Märklin collector since age 5.
H0 Collection from 1935 to today.
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Offline mrmarklin  
#3 Posted : 01 October 2018 17:41:19(UTC)
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mrmarklin

United States   
Joined: 27/10/2004(UTC)
Posts: 895
Location: Burney, CA
I’m having this set converted now. I just recently obtained it.

I’ll report on how well it runs. Most well done conversions run as well as factory equivalent Loks with a similar chip, in my experience.

Dave
From the People's Republik of Kalifornia
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Offline GlennM  
#4 Posted : 01 October 2018 20:07:45(UTC)
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GlennM

United Kingdom   
Joined: 09/05/2011(UTC)
Posts: 2,886
Location: Somewhere, But Nowhere Near Manchester, England
Would be interesting to know what decoder has been used for the conversions.

I have a few (older) conversions done with first generation decoders, and they do not run as well as the later decoders.

I recently undertook a conversion of a Marklin loco with an older LokPilot 3 decoder, did not change the motor just tuned the decoder as per recommendations and the loco runs like a dream even in slow running.

Don't look back, your not heading that way.
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Offline ocram63_uk  
#5 Posted : 01 October 2018 20:22:24(UTC)
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ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 704
Location: England, Suffolk
All, thank you for your suggestions.
I have written to the seller to know who did the conversion and which components have been used.

The seller has replied saying that " i have put the train of the set. I have changed the engine with a better original Märklin 5 star engine. And yes, originally he is not digital but i transformed the train with a original Märklin programmable decoder to digitale. I have also change the lights for using by digitale."

The loco is sold for £ 150 which sounds good to me as I paid the 180 euros for the 3352 5 / 6 years ago and I had to retrrofit it myself on top of this.

The 3352 is in 'brown' livery and I was looking for an affordable 'green' one already digital.

This model looks more modern than the 3352, in my opinion, but I may be wrong.

Should I get the original 3300 set and do the conversions myself instead ?

Have a good evening
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Offline Nigel Packer  
#6 Posted : 01 October 2018 23:33:04(UTC)
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Nigel Packer

United Kingdom   
Joined: 11/02/2006(UTC)
Posts: 683
Location: Cheshire, UK
Originally Posted by: ocram63_uk Go to Quoted Post
All, thank you for your suggestions.

The 3352 is in 'brown' livery and I was looking for an affordable 'green' one already digital.

This model looks more modern than the 3352, in my opinion, but I may be wrong.

Should I get the original 3300 set and do the conversions myself instead ?

Have a good evening



The 3300 set was made as a limited edition only in 1985. The 3352 was made starting in 1987, and has a more modern design of pantographs (in Märklin terms). Later 3352s (1994 onwards) have close couplings, and another newer version of the pantographs.

My recommendation would be to look for a 3756, but you could certainly buy a 3300 set and do the conversion yourself. Doing your own conversions can be quite satisfying, and you could also add sound at the same time if you wished.

Nigel
Märklin collector since age 5.
H0 Collection from 1935 to today.
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Offline ocram63_uk  
#7 Posted : 02 October 2018 13:01:04(UTC)
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ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 704
Location: England, Suffolk
Hi Nigel, thank you for your input.
So the 3756 is analog and is an improvement on the 3352.
Is there a digital Crock, ready to run, which has all the latest improvements out there ?

Similarly is there a digital 'modern' German Crock as well so that I could get the 2 models separately and make my own 3300 set ? BigGrin
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Offline Nigel Packer  
#8 Posted : 02 October 2018 13:34:51(UTC)
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Nigel Packer

United Kingdom   
Joined: 11/02/2006(UTC)
Posts: 683
Location: Cheshire, UK
Originally Posted by: ocram63_uk Go to Quoted Post
Hi Nigel, thank you for your input.
So the 3756 is analog and is an improvement on the 3352.
Is there a digital Crock, ready to run, which has all the latest improvements out there ?

Similarly is there a digital 'modern' German Crock as well so that I could get the 2 models separately and make my own 3300 set ? BigGrin



No, the 3756 is 6090 Digital. That means it has adjustable acceleration and braking delay, and top speed, settings. And a 5-pole motor. That's why I suggested that one.

A 3722 would be an equivalent E94 German croc.

Of course, you can spend much more than this for a recent production version of each of these. However, the 3756 and 3722 are equivalent to the locos in the 3300 set, but with second generation Digital decoders and performance.

I hope this helps!

Nigel
Märklin collector since age 5.
H0 Collection from 1935 to today.
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Offline ocram63_uk  
#9 Posted : 02 October 2018 19:38:43(UTC)
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ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 704
Location: England, Suffolk
Hi Nigel, thank you very much. The info
you have given me is very interesting.
I will follow your suggestions.
M
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Offline Johnvr  
#10 Posted : 03 October 2018 08:25:40(UTC)
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Johnvr

South Africa   
Joined: 03/10/2010(UTC)
Posts: 1,269
Location: Cape Town, South Africa
Hi,

Here is some information on my conversion of 3556 Crocodile.

3556 Crocodile Conversion

I initially inserted a 60760 Decoder. That was just ok, but at that stage it was all that I was looking for, namely to run it digitally.
Later on, I removed the 60760 decoder and inserted a 60987 mSD3 Sound Decoder. Now it runs superbly, with sound, etc.
In my opinion, upgrading an old locomotive is challenging but also a rewarding part of the hobby when you see it running on the layout.

DSCN3435.JPG

DSCN3423.JPG

DSCN3442.JPG


Regards BigGrin
John
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Offline Ross  
#11 Posted : 03 October 2018 09:12:16(UTC)
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Ross

Australia   
Joined: 25/09/2006(UTC)
Posts: 872
Location: Sydney, NSW
Hi Marco/All,

You may be interested in the following article.

Conversion of 3652 and 3756 with LED Lights

Hope it helps you to do your own conversion.

Ross
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Offline ktsolias  
#12 Posted : 03 October 2018 10:46:16(UTC)
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ktsolias

Greece   
Joined: 01/05/2016(UTC)
Posts: 610
Location: Athens
Here is my conversion of the 3352 which apply to all the crocos with the same frame with Swiss style LED lights ww-red, cabin lights and mLD3 decoder.

https://www.marklin-user...dile--Digital-Conversion

Regards

Costas
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Offline ocram63_uk  
#13 Posted : 03 October 2018 14:26:38(UTC)
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ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 704
Location: England, Suffolk
the seller came back to me saying that he used the 60760 conversion kit.

after reading the links posted on how to convert the Crocks and the 'issue' with the magnet being too big I recalled that when I had my 3352 converted by the Marklin dealer he had forgotten to 'file' the magnet in order for it to run on curves !!!

What now puzzles me about this loco is if he assembled the light correctly or not.

But if I opt for a 3756 directly everything is made correctly by Marklin :-)
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Offline Bigdaddynz  
#14 Posted : 03 October 2018 22:04:57(UTC)
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Bigdaddynz

New Zealand   
Joined: 17/09/2006(UTC)
Posts: 18,665
Location: New Zealand
Originally Posted by: ocram63_uk Go to Quoted Post
Does anyone have this Crock ?
How does it run once it is converted ?


I had this Crocodile and converted it with a 60760 kit. It ran very well. I ended up selling it because I wanted to upgrade to one of the newer Crocs with C-Sine motor to match another Croc with C-Sine, for double heading 2 locos.

Croc1_new.JPG
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Offline dickinsonj  
#15 Posted : 05 October 2018 01:21:38(UTC)
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dickinsonj

United States   
Joined: 05/12/2008(UTC)
Posts: 1,684
Location: Crozet, Virginia
Originally Posted by: mrmarklin Go to Quoted Post
Most well done conversions run as well as factory equivalent Loks with a similar chip, in my experience.

Dave


That is my experience as well. I am almost ready to find the time to convert my old 3356. It was converted to digital a long time ago but with an ancient decoder and it runs like crap compared to today's locos.

But other similar conversion that I have done tell me that with a 5-pole DC motor and a good quality chip it will run just fine, thank you. Cool
Regards,
Jim
I have almost all Märklin and mostly HO, although I do have a small number of Z gauge trains!
So many trains and so little time.
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