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-   -   MCD MT "clone" 1/5 Conversion (https://www.rc-monster.com/forum/showthread.php?t=14958)

Takedown 09.12.2008 06:54 PM

Dont want to have that risk of stuff getting inside an outrunner. The reason I chose brushed and lead acid is for winter use. The ESC I might get it waterproof and the motor will be fine and the batts are sealed.

Takedown 09.12.2008 07:22 PM

More pics... "FSR 1/5, Cen Matrix FRE TR, Evader EXT."

http://i301.photobucket.com/albums/n...ownRCU/1-6.jpg

http://i301.photobucket.com/albums/n...ownRCU/2-5.jpg

Takedown 09.12.2008 07:24 PM

Also a few pics of the engine. "Yes its a little dirty." :yes: It will be going up for sale here very soon...

http://i301.photobucket.com/albums/n...ownRCU/3-5.jpg

http://i301.photobucket.com/albums/n...ownRCU/4-4.jpg

http://i301.photobucket.com/albums/n...ownRCU/5-3.jpg

Krawlin 09.12.2008 11:31 PM

That's pretty damn awesome Ryan! Shame to convert it IMO, but whatever works for you. But since you are dead set on converting it, I really think you would be better off with a center diff style setup rather than transverse mounting the electric motor and using belt drive. Would still have to do belt drive with the center diff style setup, but it would be less complicated. And might work if you offset that center section a bit. Looks great though, and good luck. :yes:

Takedown 09.12.2008 11:36 PM

Ya I plan on taking out the 2nd gear completely and running a belt from the belt "pinion" to the belt "spur" which is hooked to the bevels shaft for a 1/1 ratio before it hits the center diff for more speed. It shouldnt be to complicated.

Takedown 09.12.2008 11:47 PM

Heres a quick sketch of the belt idea... The 1st and 3rd gear would both have the same belt pinion to make it a 1/1 ratio on the tranny. 2nd gear would be taken out completely or used as a guide.

http://i301.photobucket.com/albums/n...RCU/tranny.jpg

Krawlin 09.13.2008 12:44 AM

Quote:

Originally Posted by Takedown (Post 211956)
Heres a quick sketch of the belt idea... The 1st and 3rd gear would both have the same belt pinion to make it a 1/1 ratio on the tranny. 2nd gear would be taken out completely or used as a guide.

http://i301.photobucket.com/albums/n...RCU/tranny.jpg

Ah ok. That will work well, but I still think that having an inline motor setup instead of transverse would be better. But whatever works best for you I guess.

Takedown 09.13.2008 12:45 AM

If I decided you go directly to the diff I would have to make a bigger and more complicated mount and I would have to dremel the nice pretty aluminum playing that covers and holds the center diff in place.

Takedown 09.13.2008 12:13 PM

Oh no.... Im having 2nd thoughts on converting.

brushlessboy16 09.13.2008 12:19 PM

SNAP OUTTOF IT MAN!!!!!!:lol:

Krawlin 09.13.2008 12:49 PM

Quote:

Originally Posted by Takedown (Post 212095)
Oh no.... Im having 2nd thoughts on converting.

Sorry to all of you electric fans on here, but I am glad that you are having 2nd thoughts about converting. Honestly I think that platform is just too complicated for a good conversion. And besides, the gas engine adds a bit of realism to it, especially with something that big. Put the gasser back in it and enjoy it. :yes::wink:

brushlessboy16 09.13.2008 12:59 PM

Quote:

Originally Posted by Krawlin (Post 212105)
Sorry to all of you electric fans on here, but I am glad that you are having 2nd thoughts about converting. Honestly I think that platform is just too complicated for a good conversion. And besides, the gas engine adds a bit of realism to it, especially with something that big. Put the gasser back in it and enjoy it. :yes::wink:

and enjoy paying for gass:whistle::lol:

Krawlin 09.13.2008 01:02 PM

Quote:

Originally Posted by brushlessboy16 (Post 212109)
and enjoy paying for gass:whistle::lol:

Its alot cheaper than nitro, and get some crazy runtimes on 1 tank....

Takedown 09.13.2008 01:42 PM

Im trying to keep my mind off of gas powered right now. I will for sure convert it, I just get those 2nd thought/urges every once in awhile.

What's_nitro? 09.13.2008 04:06 PM

Quote:

Originally Posted by Takedown (Post 211756)
Ok heres what Im expecting...

Spur/Pinion Reduction Ratio : 1 : 1
Total Reduction Ratio : 3.6 : 1
Tire Circumference : 28.27 inches (718.17 mm)
Total Motor Speed : 6566 RPM
Theoretical Maximum Vehicle Speed : 48.83 mph (78.45 km/h)
Drag-Adjusted Vehicle Speed : 46 mph (73 km/h) - 6% loss
Calculated Loaded KV Value : 172.79
Calculated KT Constant : 6.76 oz-in/A
Calculated Motor Torque : 3.87 ft-lbs
Calculated Axle Torque : 13.95 ft-lbs
Calculated Motor Power : 4180 watts (5.6 HP)

What did you enter for voltage/current draw? The motor you want can only handle 350W. That's less than 1/2 HP. There's no way it will handle 4000W. 350W is in brushed 540 motor territory. I think you'd be lucky if you got 20 mph with that setup your looking at. I'm all for the conversion, but you need to do some more research before you buy. I would want at least 1000W in that truck to get good performance out of it. 1000W is easy: 20V @ 50A. etc. You should shoot Aqwut a PM. He has a lot of experience with big, powerful conversions. Good luck!

:mdr:


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