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Quick change engine mount

Quick change engine mount

Old 07-01-2009, 08:00 AM
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Default Quick change engine mount

Hello all,

I have been reading as much as I can on this hobby to educate myself. I have run into a couple of references to using a quick change engine mount.

I have a Losi RTR 2.0 8ight Buggy so I am looking at the LOSA9155, but I really have no idea why I would ever need one.

Can someone dumb it down for me please?

Thanks a lot.
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Old 07-01-2009, 08:02 AM
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You can pull your engine out and put it back in without reshimming it with the quick change mount and also if you use the Losi one you can use a standard 3 shoe clutch system useing the mount if you want.
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Old 07-01-2009, 08:06 AM
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a quick change mount gives you the ability to take the motor
in and out with out having to redo the gear mesh each time
that you do it makes it a lot easier
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Old 07-01-2009, 08:41 AM
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Thanks a lot for the quick responses.

Can I assume that "reshimming it" and "redo the gear mesh" are the same thing?

If so what is it and what is involved in doing/redoing it?
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Old 07-01-2009, 08:43 AM
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I pull my engine before each main and check the clutch. A wise racer told me to do this and it works well to make sure my clutch is up to the duty of a 30 min main. The quick change mount makes this process very very easy. In addition it adds strength that engine mount blocks do not have. This protects the case on your expensive mill from cracking during the abuse that these cars endure around the track. I have been told that when an engine case cracks or breaks a mounting tab usually a one piece mount is not being used. So the quick change mount definatly serves a purpose. I use the king headz one myself but the losi one is good too. BTW the king headz mount will allow you to use a standart 3 shoe clutch system as well.
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Old 07-01-2009, 09:16 AM
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buy the quick change mount. your life will be easier.
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Old 07-01-2009, 09:19 AM
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Quick-change mounts are a waste, imo.

You can use a 3-shoe clutch on the 8ight 1.0 and 2.0 with the stock mounts. I know several racers who use a 3-shoe clutch on their 8ights, but none of them are using a quick-change mount... myself included.

You can remove the engine from the stock mounts without resetting mesh, just like the "quick-change" mounts. I use ball-end hex to make this easy as pie, but others use regular hex without problems.

There was a time when cooling heads were bigger and didn't have cutouts in them. You needed quick-change mounts then.
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Old 07-01-2009, 09:53 AM
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Originally Posted by Garet Jax View Post
Thanks a lot for the quick responses.

Can I assume that "reshimming it" and "redo the gear mesh" are the same thing?

If so what is it and what is involved in doing/redoing it?
They are not the same thing. Gear mesh is the space between the clutch bell and spur gear this takes time to set properly and will need to be reset everytime you pull the engine without a quick change mount. Re shimming the clutch bell is only necessary when you remove the bell from the engine. The shimming here is done via small washer like shims that take up extra space on the shaft of the engine such that the bell only has a very small amount of play .5-1mm. Too much play and the clutch bearings will fail quickly. As with the bell being too tight and not enough space sake thing the bearings will fail quickly. Clutch bell shimming is not necessary every time you pull the engine, only when you pull the clutch bell to heck or. Hange the clutches and or bearings.
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Old 07-01-2009, 11:00 AM
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Originally Posted by Frank L View Post
They are not the same thing. Gear mesh is the space between the clutch bell and spur gear this takes time to set properly and will need to be reset everytime you pull the engine without a quick change mount. Re shimming the clutch bell is only necessary when you remove the bell from the engine. The shimming here is done via small washer like shims that take up extra space on the shaft of the engine such that the bell only has a very small amount of play .5-1mm. Too much play and the clutch bearings will fail quickly. As with the bell being too tight and not enough space sake thing the bearings will fail quickly. Clutch bell shimming is not necessary every time you pull the engine, only when you pull the clutch bell to heck or. Hange the clutches and or bearings.
From reading this, it is clear I have a lot to learn. Is there a guide or a video to help? I have read the guides that came with the Losi RTR and it seems they were written for someone who already knows what they are doing.
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Old 07-01-2009, 11:05 AM
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the quick change mount was the first thing i bought, it makes pulling the motor so much faster, we always pull the motor after both qualifing rounds to change clutch bearings for the main and with the quick change it takes maybe 5 minutes... I highly suggest it.....
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