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Volvo A30C 1:16 |
ari
Eroberer
  
Dabei seit: 23.08.2011
Beiträge: 53
Level: 30 [?]
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25.08.2012 21:51 |
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JensR
Administrator
     
Dabei seit: 16.01.2010
Beiträge: 5.265
Maßstab: 1:14,5 Wohnort: England
Level: 56 [?]
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Hi Ari!
You've linked to the same motor twice.
The RB35 in 1:50 is IMO not enough for the dumper.
I have those in my grader and there it's okay, but I'd be worried that they might be too weak for a dumper that is supposed to haul a load up a hill...
My grader weighs about 9kg and has roughly the power of 5 RB35s.
I'm not a dumper expert, though...
In 1:100, the RB35 would have enough torque, but be pretty slow.
Also, the bushing in the RB35 is not really suited to carrying high loads. You can use the flange of the bushing to support the load.
You can replace the original motor with a Speed 300 (Graupner). These are more powerful, even at 7.2V (their nominal voltage).
Cheers
Jens
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25.08.2012 22:36 |
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ari
Eroberer
  
Dabei seit: 23.08.2011
Beiträge: 53
Level: 30 [?]
Erfahrungspunkte: 264.328
Nächster Level: 300.073
Themenstarter
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26.08.2012 20:36 |
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ari
Eroberer
  
Dabei seit: 23.08.2011
Beiträge: 53
Level: 30 [?]
Erfahrungspunkte: 264.328
Nächster Level: 300.073
Themenstarter
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01.09.2012 15:02 |
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JensR
Administrator
     
Dabei seit: 16.01.2010
Beiträge: 5.265
Maßstab: 1:14,5 Wohnort: England
Level: 56 [?]
Erfahrungspunkte: 29.334.915
Nächster Level: 30.430.899
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It looks like Stahl uses RB35 gearboxes with longer motors.
I remember that the MFA gearboxes are similar to the RB35, but I don't really know.
You can see a build thread of the dumper here:
http://www.modell-baustelle.de/index.php...d&threadID=3884
Tamiya truck axles would work, but I think the differential would be problematic. You could lock the diff and live with the worsened turning circle.
Also, Tamiya truck axles are plastic and might not be up to the stress of a dumper. You could get metal replacements, search for "RC Channels" on ebay/google.
Wenn jemand Ari beim Achsenbau helfen kann, einfach hier posten - auch auf Deutsch, ich versuche dann zu übersetzen
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03.09.2012 14:53 |
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ari
Eroberer
  
Dabei seit: 23.08.2011
Beiträge: 53
Level: 30 [?]
Erfahrungspunkte: 264.328
Nächster Level: 300.073
Themenstarter
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03.09.2012 16:55 |
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