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Offline PMPeter  
#1 Posted : 13 March 2019 15:31:40(UTC)
PMPeter

Canada   
Joined: 04/04/2013(UTC)
Posts: 994
Location: Port Moody, BC
With the euphoria surrounding the receipt of a new locomotive there always seems to be a down side that leaves you disappointed. I received this Fleischmann AC version of the E152 yesterday and it runs very nicely, especially at slow speed. The sound is great and I have not yet tested all of the 32 functions available on DCC.

However, the 2 axle front and rear boggies have DC wheelsets with very flat, slightly rounded flanges that derail each and every time on some turnouts that are close to a curve and any 3 way Y turnout not set to straight. It is not a spacing issue since I have confirmed the Marklin spacing is correct and since they are split axles going into an insulated bushing on the shaft they are pushed together as far as possible. In my opinion it is the lack of flange issue as per other DC wheelsets.

My question is, does anyone know of a source for spoked AC front boggie wheelsets that can be bought individually? I can find them on eBay as part of complete boggie assemblies usually only having a single axle, so I don't really want to buy 4 boggies to get the 4 wheelsets that I need. Alternatively I guess I could buy 4 standard needle point spoked wheels, paint the spokes red, and grind off the needle points. Suggestions?

Thanks
Peter
Offline applor  
#2 Posted : 14 March 2019 06:34:51(UTC)
applor

Australia   
Joined: 21/05/2004(UTC)
Posts: 1,404
Location: Brisbane, Queensland
I can't help you with replacement wheels but I wanted to share with you that I had this problem just the other day with a Fleischmann BR86 I converted to AC - the front bogie would derail on points set thrown.

Looking at the front bogie, it had a metal piece that touched the axle to provide earth to the front bogie which bent down from the chassis.

I was able to simply bend the metal further down to provide more down force on the front bogie which resolved the derailments without needing to change wheelsets.
modelling 1954 Germany (era IIIa)
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Offline PMPeter  
#3 Posted : 14 March 2019 14:20:30(UTC)
PMPeter

Canada   
Joined: 04/04/2013(UTC)
Posts: 994
Location: Port Moody, BC
Yes I thought of that and decided to add weight near the front axle by installing the magnet for reed switch activation on the boggie. Made no difference on the thrown turnouts, but gives me nice early sensor activation for my Rocrail control. BigGrin

For now I replaced the front boggie leading wheelset with a standard Roco 40195 with needle point axles and the loco functions perfectly through all turnouts. So perhaps I can get away with only replacing 2 wheelsets (leading in each direction) if I can only find some.

Peter
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Offline Rinus  
#4 Posted : 19 November 2019 10:55:19(UTC)
Rinus


Joined: 20/02/2005(UTC)
Posts: 1,673
Location: Wageningen, The Netherlands
Hi Peter,

I experienced the same problem with this otherwise beautifull locomotive.

Problem should be solved by widening the steps L and r of the bogie.

The stummi forum also mentions decreasing the axle width to 13.8 mm. https://www.stummiforum.de/viewtopic.php?t=163037

I have the same problem, but have not tested this solution.

rinus
Offline PMPeter  
#5 Posted : 19 November 2019 15:26:42(UTC)
PMPeter

Canada   
Joined: 04/04/2013(UTC)
Posts: 994
Location: Port Moody, BC
I had done both of these things and it made no difference. I still have the Roco needlepoint wheels as the lead at both ends and it works just fine, but looks bad.
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Offline Rinus  
#6 Posted : 21 November 2019 12:38:04(UTC)
Rinus


Joined: 20/02/2005(UTC)
Posts: 1,673
Location: Wageningen, The Netherlands
How did you decrease the axle widths? I’m about to give it a try myself.
Offline Rinus  
#7 Posted : 21 November 2019 12:47:24(UTC)
Rinus


Joined: 20/02/2005(UTC)
Posts: 1,673
Location: Wageningen, The Netherlands
Also I just sent an email to MSL where I bought mine. Perhaps they can help.

Rinus
Offline hxmiesa  
#8 Posted : 21 November 2019 13:00:56(UTC)
hxmiesa

Spain   
Joined: 15/12/2005(UTC)
Posts: 2,765
Location: Spain
Originally Posted by: Rinus Go to Quoted Post
How did you decrease the axle widths? I’m about to give it a try myself.

Some of the members here with a professional attitude towards the hobby, will advise you to buy expensive tools from f.x. "Foremann" (sp?), but I just use two pieces of wood with holes in them, place the axle between the wood, and tap away lightly with a hammer on one end.
I think 13,9mm is better than 13,8. (also according to jvuye)

Best regards
Henrik Hoexbroe ("The Dane In Spain")
http://hoexbroe.tripod.com
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Offline PMPeter  
#9 Posted : 21 November 2019 16:01:13(UTC)
PMPeter

Canada   
Joined: 04/04/2013(UTC)
Posts: 994
Location: Port Moody, BC
I use the Fohrmann "Radsatz Richtgerät". Fohrmann link
Offline Rinus  
#10 Posted : 23 November 2019 10:42:42(UTC)
Rinus


Joined: 20/02/2005(UTC)
Posts: 1,673
Location: Wageningen, The Netherlands
While waiting for the reply from MSL, I was wondering: would the wheel sets from the PIKO E52 be a solution?

They are not that good looking, but as it would fit the purpose why not?
Offline PMPeter  
#11 Posted : 23 November 2019 16:04:17(UTC)
PMPeter

Canada   
Joined: 04/04/2013(UTC)
Posts: 994
Location: Port Moody, BC
Originally Posted by: Rinus Go to Quoted Post
While waiting for the reply from MSL, I was wondering: would the wheel sets from the PIKO E52 be a solution?

They are not that good looking, but as it would fit the purpose why not?


Based on the Piko spare parts list those wheels are the same for AC and DC. Therefore, I have to assume they are DC type with the same low flanges as the Fleischmann ones. The key problem I have found is the wheel diameter. The Fleischmann ones that come with the loco are 9.8 mm dia. with low flanges. The Roco needlepoint ones that work nicely with the large flange are 9 mm dia. The closest Marklin spoked ones I can find are 10.4 mm dia. and they are too large and will not rotate.

Peter
Offline Rinus  
#12 Posted : 26 November 2019 10:26:03(UTC)
Rinus


Joined: 20/02/2005(UTC)
Posts: 1,673
Location: Wageningen, The Netherlands
Got a reply from MSL yesterday. They responded quickly ThumpUp

They actually refered to the operations manual.
Link to Manual

On figures 7 and 8 it is shown that by altering the position of a stepladder, the loco should be able to negotiate curves smaller than R3.

I tried and even when completely removing the stepladders, the front bogie immediately derailed when going in the narrow curve of a 2269 K-track switch.

My opinion is that the flanges of the wheels are to small to handle the frog of the switch and there is too little pressure on the bogie.

Keep you posted on further replies from MSL.

Rinus

Offline PMPeter  
#13 Posted : 26 November 2019 15:46:16(UTC)
PMPeter

Canada   
Joined: 04/04/2013(UTC)
Posts: 994
Location: Port Moody, BC
Yes I agree. That is the conclusion I came to in my very first post of this thread. The very low flanges are the problem. The next problem is I cannot find any suitable replacement AC wheels.
Offline Rinus  
#14 Posted : 30 November 2019 21:21:41(UTC)
Rinus


Joined: 20/02/2005(UTC)
Posts: 1,673
Location: Wageningen, The Netherlands
Hi,

Replacing the front wheels with Märklin replacements 206735 or 201663 appears not to be an option. I checked the availability at my local dealer and it seems they are no longer available. Confused

However I did make some progress with MSL. After exchanging some emails they offered me to return the item to them, so they can send it to Fleischmann for repairs.ThumpUp

I’ll post the package next week and keep you informed.

Rinus
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