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Old 03-28-2009, 11:28 AM   #1
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Default xxxt MF1 Tranny

Hi guys

I heard alot of guys swapping out their gen2 trannys to the gen1.

Why is that, Is there really a big difference?

thanks
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Old 03-28-2009, 02:19 PM   #2
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I think they changed the ratio with the gen 2. Never used one - i've always used the gen 1.
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Old 03-28-2009, 02:38 PM   #3
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Some people had broken the diff cases when they landed hard (including me). The gen1 diff is a little smoother, but you have to change the whole rear end of the truck.
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Old 03-29-2009, 03:28 AM   #4
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like the above stated: gotta switch the case, the diff gear, axles, tplate, inner hinge plate. I may be missing something else?

it's a great idea to switch to this setup for the summer months when you'll be running outdoors, most likely on an 1/8th scale setup track. It's a lot more stout than the genII case, but you better be ready to replace hinge braces(or whatever they are called). but if you could find an old stock trinity aluminum one...
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Old 03-29-2009, 01:40 PM   #5
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I have found just the opposite with the GenII tranny case to be much more durable. I used to break cases all time in the GenI days. I also noticed that with the GenI you go through the middle idler gears all the time. I can't remember the last time I even changed the idler gear in my BK2 over the last year of racing. I don't get the same extreme wear I did with the GenI.

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Old 03-29-2009, 03:12 PM   #6
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You know, I just noticed this, for anyone who weren't in the RC world, "XXXT MF Tranny" sounds like we're talking about something else...


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Old 03-30-2009, 10:04 PM   #7
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Quote:
Originally Posted by Chris__RC View Post
Some people had broken the diff cases when they landed hard (including me). The gen1 diff is a little smoother, but you have to change the whole rear end of the truck.
the whole rear end? wow
I thought it would pretty much bolt right on.
So the A-arms, axles, hubs, and bolt pattern are differnt?
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Old 03-30-2009, 10:30 PM   #8
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if the memory serves me correctly the arms are can be used but the arm mount and the t plate is different. the variable arm lengths can still be used
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Old 03-31-2009, 01:53 PM   #9
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Ok you can use the arms out. You will need to change the case, idler gear, diff gear, and pivot support (which losi makes alum now for the XXXTCR which uses the Gen1 pivot support) and t-plate. If you put longer screws through the plastic pivot with nuts on the top side this really helps with the strength of the plastic pivots. I use the alum one with longer screws and mini nuts on the top so the screws will not back out of the alum. I think you may need new inner hinge pins as well.
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Old 04-02-2009, 11:17 PM   #10
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Ok, so if I do this

Is it worth it?
Will the change improve the truck? Am I going to notice a difference in driving it?
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Old 04-02-2009, 11:42 PM   #11
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i'm pretty sure the pins will be fine?
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Old 04-03-2009, 12:43 AM   #12
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I am not sure you will see a big effect. The MF2 configuration is a great truck. The QC rear axles are pretty convienent though.
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