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-   -   8ight conversion (https://www.rc-monster.com/forum/showthread.php?t=17034)

bustitup 12.03.2008 05:20 PM

8ight conversion
 
problem
I'm instslling mikes motormount in the 8 and realized the center diff has to be turned backwards (from normal) so the spur gear reaches the pinion...is this correct

the center diff can run properly in the backwards position?

Semi Pro 12.03.2008 07:34 PM

yep the center diff can run in any position

jnev 12.03.2008 09:17 PM

Yep, center diff has to be turned around. :yes:

RCShocker 12.04.2008 12:29 AM

Quote:

Originally Posted by jnev (Post 238649)
Yep, center diff has to be turned around. :yes:

Is that with ALL the Eight conversions?

DRIFT_BUGGY 12.04.2008 01:25 AM

It has to be run backwards, there is no motor out there with a shaft that long to run it around the correct way

bustitup 12.04.2008 01:36 AM

Quote:

Originally Posted by DRIFT_BUGGY (Post 238737)
It has to be run backwards, there is no motor out there with a shaft that long to run it around the correct way


lol..I found that out the hard way.....had the new motormount installed real nice used blue locktight and went to put the motor on and said.....somethings wrong.......but its not just a matter of turning the diff around...you have to take the diff apart to switch the drive cups and bearing around also because they use differant size bearings and the motormount will only work with a certain one

jnev 12.04.2008 01:49 AM

Hmm, thats weird. All I did on mine is turn the diff 180*, and it fit right into the motor mount and diff bulk...

bustitup 12.04.2008 01:56 AM

Quote:

Originally Posted by jnev (Post 238743)
Hmm, thats weird. All I did on mine is turn the diff 180*, and it fit right into the motor mount and diff bulk...

well on mine with mikes losi 8 motor mount.......it has a groove that holds the bearing that over the drive cup shaft...well on my center diff the front drive cup had a larger bearing than the rear drive cup......so when I turned the diff 180deg the bearing was too large to fit in the groove on mikes motor mount...hence having to take the diff apart and switch the bearings.......maybe the guy I bought this eight from had different size bearings for some reason

anyway tomorrow I will post pics of this conversion

hoovhartid 12.04.2008 03:22 AM

Quote:

Originally Posted by bustitup (Post 238741)
but its not just a matter of turning the diff around...you have to take the diff apart to switch the drive cups and bearing around also because they use differant size bearings and the motormount will only work with a certain one

I had the same thing when using the losi conversion. I thought maybe the guy I bought it from used aftermarket bearings, or changed something....I guess thats how it goes. Weird, it wasnt in the losi directions, so I thought it was just something on mine.

....sorry I didnt give you the heads up.
:whistle:

bustitup 12.04.2008 02:21 PM

Well Heres The Pics Of The Conversion
 
THIS IS THE CAR WHEN I RECEIVED IT

http://www.rgcbuilders.net/losi1.jpg

http://www.rgcbuilders.net/losi2.jpg

http://www.rgcbuilders.net/losi3.jpg

STRIPING IT DOWN

http://www.rgcbuilders.net/losi4.jpg

http://www.rgcbuilders.net/losi5A.jpg

PLACING THE BATTERY TRAY AND WE TOOK THE OLD BATTERY BOX AND MADE A TRAY FOR THE MONSTER

http://www.rgcbuilders.net/losi5.jpg

RUNNING THE WIRES SO THEY WILL BE HIDDEN

http://www.rgcbuilders.net/losi6.jpg

http://www.rgcbuilders.net/losi7.jpg

http://www.rgcbuilders.net/losi8.jpg

http://www.rgcbuilders.net/losi9.jpg

bustitup 12.04.2008 02:23 PM

CLOSE UP SHOT OF THE MONSTER TRAY

http://www.rgcbuilders.net/losi11.jpg

ALL FINISHED

http://www.rgcbuilders.net/losi10.jpg

bustitup 12.04.2008 02:25 PM

the car wheelies all over the place in the back yard test......seems like the front diff is not pulling enough.......what diff oil do you guys suggest?

its running a 1512/2.5d on 5s zippy 4000mah 25c-35c geared 48/14

steering on the eight is amazing....going to the track in an hour or so to test it

DickyT 12.04.2008 02:32 PM

Nice conversion! With a 1512 2.5d I'd go with 50k or lighter. I found 100k to be the magic number with my 1515 1y. anything lighter and it unloaded too hard, anything heavier and it was a wheely machine. The 1512 makes less torque so lighter oil in the 30-50k range should suit you well.

bustitup 12.04.2008 02:35 PM

Quote:

Originally Posted by DickyT (Post 238865)
Nice conversion! With a 1512 2.5d I'd go with 50k or lighter. I found 100k to be the magic number with my 1515 1y. anything lighter and it unloaded too hard, anything heavier and it was a wheely machine. The 1512 makes less torque so lighter oil in the 30-50k range should suit you well.

Thanks Dicky but please give me your suggestion for front, center and rear diff oil's....i'm new:neutral:

DickyT 12.04.2008 03:55 PM

I run 7.5'ish (a mixture of 10 and 5) in the front of my Mugen and 5k in the rear. As more of a basher style driver I find this perfect for me. I live by the go into the corner hard and use power to pull me around it method of getting around the track.

If I were a clean line style driver I would go a little lighter, 5-7k front and 3k rear. your driving style will be a determining factor in what oil you want. We all (you, me, and hoov) need to finda common sunday to hit up traktopia ! and one of these sundays you will have to drive down to the yamato track.

bustitup 12.04.2008 04:04 PM

Quote:

Originally Posted by DickyT (Post 238901)
I run 7.5'ish (a mixture of 10 and 5) in the front of my Mugen and 5k in the rear. As more of a basher style driver I find this perfect for me. I live by the go into the corner hard and use power to pull me around it method of getting around the track.

If I were a clean line style driver I would go a little lighter, 5-7k front and 3k rear. your driving style will be a determining factor in what oil you want. We all (you, me, and hoov) need to finda common sunday to hit up traktopia ! and one of these sundays you will have to drive down to the yamato track.


so I take it that means the 50k goes in the center?...right now I only have 3k in the center...its all I have at the moment

hoovhartid 12.04.2008 07:40 PM

Quote:

Originally Posted by bustitup (Post 238907)
.right now I only have 3k in the center...its all I have at the moment

and you're getting wheelies?!?! The front tires should be as big as dinner plates with all the unloading you should be getting.

something is wrong.

does your center diff spin in your hand?
are you sure its 3k?

it almost sounds like the CD didnt go back together correctly and wound up locked.


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