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Old 11-05-2006, 09:17 PM   #1
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Default Keep stripping second gear (MTX4)

So I am running in the Main and once again my second gear strips out. This is the second time now this has happened. The odd thing is, the engine doesn't seem to have moved back any as the first gear pinion/spur are still matched up to spec. This happened soon after I hit a corner flapper pretty hard lifting my car about 5 inches off the ground... I am not sure if that caused it or not.

What is causing this? How do I correct it?

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Old 11-05-2006, 09:32 PM   #2
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2 things i can think of are the engine is not straight, it may be sitting at an angle to the gears which if it moves slightly may cause one to strip. The other thing is the engine may move under hard acceleration or when the chassis is under severe load in which your best solutions are a 1 piece motor mount.
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Old 11-05-2006, 09:39 PM   #3
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There are a couple of things you can check. Firstly check that the sway bar isnt resting on the 2nd gear housing. Also check that the 2 speed shoes arent rubbing on the chassis brace across the motor. I also had some trouble with mine and it was being caused be the bearing in the 2nd gear housing was moving and causing the housing to move across so that there was only a small amount of the gear running on the pinion. The other thing is if you were still on the throttle when the car came back onto the ground then the load could have caused it to strip.
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Old 11-06-2006, 12:09 AM   #4
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One other thing, are you running a 52,53,or 54 tooth spur?
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Old 11-06-2006, 06:04 AM   #5
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i was told by mugen seiki distributor in singapore about a faulty first batch of clutchbells and mugen sent him another set to rectify those with the 2nd gear strip problem...i used to have those prob but no more... heh...but yeah look out for those gears on an angle or some sort like that.
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Old 11-06-2006, 06:11 AM   #6
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Scott I am running a 52 spur on the second gear...
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Old 11-06-2006, 06:43 AM   #7
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If you guys are looking for Kawahara stuff for your MTX-4 try TEAMTAYLORRACING.net it will probably not be listed on his website but give them a call or send him an email and he will probably have it or can get it for you.
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Old 11-06-2006, 07:04 AM   #8
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over here in socal, the local mtx4 users hardly ever strip gears. i asked them what the story on that was, and they told me that:

"You gotta mesh the 2nd gear first and the 1st gear will be just fine, itll never strip."

dunno if thatll help you, but its worth a shot.
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Old 11-06-2006, 08:11 AM   #9
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Quote:
Originally Posted by nigelnuggets
over here in socal, the local mtx4 users hardly ever strip gears. i asked them what the story on that was, and they told me that:

"You gotta mesh the 2nd gear first and the 1st gear will be just fine, itll never strip."

dunno if thatll help you, but its worth a shot.
100% correct. I've been doing this since the first time I stripped a gear. I've only had 2 others strip out in a whole year.
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Old 11-06-2006, 08:49 AM   #10
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Quote:
Originally Posted by YBSLOW
If you guys are looking for Kawahara stuff for your MTX-4 try TEAMTAYLORRACING.net it will probably not be listed on his website but give them a call or send him an email and he will probably have it or can get it for you.
thanks for the info big guy
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Old 11-06-2006, 10:26 AM   #11
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Quote:
Originally Posted by BIGTACO
Scott I am running a 52 spur on the second gear...
Don't run 52's. Use a 53 or a 54.
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Old 11-06-2006, 11:50 AM   #12
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Thanks everyone. I will give your suggestions a try and see what happens.

Scott: Why shouldn't I run a 52 tooth spur? I downsized the first gear spur to match the overall diameter change.
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Old 11-06-2006, 01:40 PM   #13
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I (and some others) believe that the 52 spurs strip more easily. I was in the same boat as you and many others when it came to downsizing both gears to match. All the 2nd gear spurs are the same diameter. You don't have to change them both to keep the mesh set. They cheat a little on the pitch so you can change one gear and not the other. I believe that is why the 52's strip more easily.
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Old 11-06-2006, 01:41 PM   #14
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Quote:
Originally Posted by BIGTACO
So I am running in the Main and once again my second gear strips out. This is the second time now this has happened. The odd thing is, the engine doesn't seem to have moved back any as the first gear pinion/spur are still matched up to spec. This happened soon after I hit a corner flapper pretty hard lifting my car about 5 inches off the ground... I am not sure if that caused it or not.

What is causing this? How do I correct it?

Check 2nd gear housing. I stripped my every 4 minutes at the World Champ in practices. That was brand new car too.
After I replaced 2nd gear housing and I never strip it again.
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Old 11-06-2006, 03:56 PM   #15
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bigtaco - did u back off the throttle when u went airborne ?
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