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Old 07-20-2005, 11:20 PM   #2986
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I've been running a MH3 motor and just got some C2's and I was wondering how many teeth people are dropping from the stock to 19t. I am currently geared 112/33 running at SoCal. Thanks.
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Old 07-21-2005, 03:40 AM   #2987
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i just noticed that there is a difference in the trust assembly for the CGM and BD diff... on the CGM the trust assembly goes in first then the spring, on the BD, the spring goes in first before the trust assembly... does one assembly method have an advantage over the other? thanks. - jason
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Old 07-21-2005, 03:45 AM   #2988
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Quote:
Originally Posted by Matt Howard
It all depends on the track length and motor used. At the 23T motor race I attended here in S. Korea I geared my Yokomo 23T motor at 5.0
hi matt, what particular motor was it? LR? LT? SR? ST? i'm curious 'cause we're joining a 23T race on saturday and was wondering if i could gear my KATANA and T-MAX as low as yours. thanks - jason
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Old 07-21-2005, 03:45 AM   #2989
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Quote:
Originally Posted by highwayman
i just noticed that there is a difference in the trust assembly for the CGM and BD diff... on the CGM the trust assembly goes in first then the spring, on the BD, the spring goes in first before the trust assembly... does one assembly method have an advantage over the other? thanks. - jason
There is? I guess no one ever noticed it before. I've always built mine with the thrust ball assembly closest to the diff screw head with the spring sitting on top. I really doubt there would be a difference building it either way though.
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Old 07-21-2005, 03:51 AM   #2990
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If you build the diff the way it says in the cgm manual, the screw can break.

The way it has to be built in the bd manual, thsi can't happen...
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Old 07-21-2005, 03:53 AM   #2991
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Quote:
Originally Posted by Matt Howard
There is? I guess no one ever noticed it before. I've always built mine with the thrust ball assembly closest to the diff screw head with the spring sitting on top. I really doubt there would be a difference building it either way though.
Yup... the way you do it would be the based on the CGM manual, the BD manual mounts it the other way around...

maybe i'll try the BD way for now, and on my spare diff i'll do it the CGM way to compare, i'm starting on my LCG conversion now, that's why i noticed the difference...
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Old 07-21-2005, 04:00 AM   #2992
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Quote:
Originally Posted by Martin Hofer
If you build the diff the way it says in the cgm manual, the screw can break.

The way it has to be built in the bd manual, thsi can't happen...

cool... thanks.
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Old 07-21-2005, 04:06 AM   #2993
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Quote:
Originally Posted by highwayman
hi matt, what particular motor was it? LR? LT? SR? ST? i'm curious 'cause we're joining a 23T race on saturday and was wondering if i could gear my KATANA and T-MAX as low as yours. thanks - jason
I belive that Matts motor was a ST... and the Katana would be similar if you have a TS.. but if you have a Laydown brush LT or TL motor.. I would gear about .2 smaller on your final drive..

-Dave
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Old 07-21-2005, 04:08 AM   #2994
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Quote:
Originally Posted by JDM_DOHC_SiR
I belive that Matts motor was a ST... and the Katana would be similar if you have a TS.. but if you have a Laydown brush LT or TL motor.. I would gear about .2 smaller on your final drive..

-Dave
oops, missed that question. Yes, it was a Yokomo ST on a really big and flowing track
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Old 07-21-2005, 04:12 AM   #2995
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I have to turn in my DSL modem tomorrow so I won't be able to check this board a couple times a day like I usually do until I get back to the states. I'll be in temporary lodging for two weeks and I'll try to check in at least once a day.
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Old 07-21-2005, 04:13 AM   #2996
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Thanks dave, thanks Matt...

my 23turn motors are all laydown. the track is meduim sized (can't really remember the dimensions, maybe 150 FT? )

... so my final drive should be 5.2? or 4.8? sorry just making sure... thanks.
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Old 07-21-2005, 04:15 AM   #2997
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I'm not the 23T expert here but you should probably be geared around 5.0-5.5 with those motors on a medium size track. The laydown brushes will give you more RPM than the standups so you can't gear them as low.
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Last edited by Matt Howard; 07-21-2005 at 05:06 AM.
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Old 07-21-2005, 04:17 AM   #2998
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Quote:
Originally Posted by highwayman
Thanks dave, thanks Matt...

my 23turn motors are all laydown. the track is meduim sized (can't really remember the dimensions, maybe 150 FT? )

... so my final drive should be 5.2? or 4.8? sorry just making sure... thanks.
5.2~5.3 but make sure that you chek the temp after 6 mins if you can.. try to saty under 180 F or 85 C.
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Old 07-21-2005, 05:00 AM   #2999
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Quote:
Originally Posted by JDM_DOHC_SiR
5.2~5.3 but make sure that you chek the temp after 6 mins if you can.. try to saty under 180 F or 85 C.

will do thanks... right now we gear it at 5.7, will try 5.2 to 5.3

thanks dave.
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Old 07-21-2005, 05:16 AM   #3000
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Quote:
Originally Posted by highwayman
will do thanks... right now we gear it at 5.7, will try 5.2 to 5.3

thanks dave.
Will go to you on Saturday regarding my gearing! I'll be using a Yokomo Tmaxx ZERO. Nice to know you be using the LCG for this Saturday's big race! Hope the weather clears! Will copy your set up again hehehe

I think I need to change my spur gear to be able to gear that low. And will rebuild the diffs the "BD" way. Having a hard time bringing the chasis down to 4.5mm, I'll just settle for 5mm.

Enjoy your build and see you on Saturday.
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