R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 07-01-2009, 08:00 AM   #1
Tech Master
 
Garet Jax's Avatar
 
Join Date: Jun 2009
Location: Baltimore, MD
Posts: 1,332
Trader Rating: 91 (100%+)
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.
Garet Jax is offline   Reply With Quote
Old 07-01-2009, 08:02 AM   #2
Tech Adept
 
Join Date: Jun 2009
Location: West Coast
Posts: 110
Trader Rating: 7 (100%+)
Default

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.
__________________
Not to be Bashing on T---O Fuels but make sure you take proper precautions and Research a Company before choosing a fuel to run.
NewOne is offline   Reply With Quote
Old 07-01-2009, 08:06 AM   #3
Tech Master
 
cary's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2009
Location: NorCal
Posts: 1,914
Trader Rating: 67 (100%+)
Default

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
__________________
Xray XB8 14,AE RC8T3,XB9 13,Kyosho wheeler,Losi SCTE 2.0,+ More
> The Animal,Frank L. Jr. <
~~~~RedRock Hobbies~~~~
cary is offline   Reply With Quote
Old 07-01-2009, 08:41 AM   #4
Tech Master
 
Garet Jax's Avatar
 
Join Date: Jun 2009
Location: Baltimore, MD
Posts: 1,332
Trader Rating: 91 (100%+)
Default

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?
Garet Jax is offline   Reply With Quote
Old 07-01-2009, 08:43 AM   #5
Tech Lord
 
Frank L's Avatar
 
Join Date: Dec 2008
Location: NorCal
Posts: 12,500
Trader Rating: 148 (100%+)
Default

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.
__________________
- X-Ray/ RC America Team Driver - MKS -
- XB8 - XB8T - XB8 E - OS Spec III - B2102 - 4PXR -
~ SSC ~ Godfather ~ Ironman ~ ButterySmooth ~
Frank L is offline   Reply With Quote
Old 07-01-2009, 09:16 AM   #6
Tech Addict
 
Join Date: Oct 2008
Location: Foley, Al
Posts: 516
Trader Rating: 1 (100%+)
Default

buy the quick change mount. your life will be easier.
__________________
Making a comeback !!
roadracer43 is offline   Reply With Quote
Old 07-01-2009, 09:19 AM   #7
Tech Regular
 
markr04's Avatar
 
Join Date: Jan 2009
Location: TX
Posts: 421
Trader Rating: 1 (100%+)
Default

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.
__________________
Xray 808 2010 Spec - O.S. V-Spec Speed - Airtronics M11-DSSS
Losi 8ight-T 2.0 - RB Killer 9 - Airtronics M11-FHSS-2
Losi XXX-CR - Tekin RS / Novak Ballistic 13.5 - Airtronics M11-FHSS-2
markr04 is offline   Reply With Quote
Old 07-01-2009, 09:53 AM   #8
Tech Lord
 
Frank L's Avatar
 
Join Date: Dec 2008
Location: NorCal
Posts: 12,500
Trader Rating: 148 (100%+)
Default

Quote:
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.
__________________
- X-Ray/ RC America Team Driver - MKS -
- XB8 - XB8T - XB8 E - OS Spec III - B2102 - 4PXR -
~ SSC ~ Godfather ~ Ironman ~ ButterySmooth ~
Frank L is offline   Reply With Quote
Old 07-01-2009, 11:00 AM   #9
Tech Master
 
Garet Jax's Avatar
 
Join Date: Jun 2009
Location: Baltimore, MD
Posts: 1,332
Trader Rating: 91 (100%+)
Default

Quote:
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.
Garet Jax is offline   Reply With Quote
Old 07-01-2009, 11:05 AM   #10
Tech Fanatic
 
mudboger07's Avatar
 
Join Date: Dec 2008
Posts: 939
Default

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.....
__________________
Proud Sponsor of a 10 year old.....
losi 8ightB 2.0/DX3S/VSpec* Revo-3.3*mod slash*blade-mcx*axial GC2
Team Nitro** F-14*Team Terribles/Answer-RC

Ken
mudboger07 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
8IGHT 2.0! BAUSTIN Nitro Off-Road 14679 09-12-2015 07:58 AM
Losi 8ight building and setup JBRacing Nitro Off-Road 8691 06-27-2011 08:43 AM
King Headz Quick Change Ext. Engine Mount Hyper 8, 8.5, ST zJatoRad R/C Items: For Sale/Trade 19 04-15-2011 05:06 AM
R/C Stuff Selling Kenneth Tan Singapore R/C Racers 45728 09-09-2009 07:19 AM
?? for ADAM DRAKE: GRP .21 Tuned Doesn't Fit Losi Quick Change Engine Mount thenetwerx Nitro Off-Road 19 07-10-2009 02:01 PM
** Two Caster ZX1Rs, Nomadio React, Nomadio Sensor ** rstnboy R/C Items: For Sale/Trade 15 05-30-2009 10:13 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 09:00 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net