MCD MT "clone" 1/5 Conversion
 

Well I decided yesterday Im going to convert my clone. Ive ran it for about 4 full tanks and got an xcan upgraded pipe & and a higher intake air filter. Im still not satisfied with its preformance so Ive decided to take the plunge and convert it. What Im most likely going to do is buy a 300kv brushless scooter "m" size motor from fleabay or get one off my friends new scooter. I will be using a BidProduct 125a 10s ESC and as for lipos Im not exactly sure yet. Im thinking 10s but I am still debating on that or 8s. Hopefully I can finally get some pics for you guys somtime later today of it and its layout "drivetrain, components, whatever..." But after my hard running on it their is not one sign of wear on the truck. The dogbones/cups are still brand new and the drivetrain alltoghther is holding up spactacular. So will see how this plan goes...:yes:

Before sinking the amount of money in it will take to convert this beast, have you considered a modified motor. I mean usually on this Chinese clones they cheap out on stuff like the motor and electronics so it would be worth a look in my opinion.

Everything on the truck is rock solid and reliable in my opinion. I havent noticed any wear on any parts on the drivetrain and I have not broken any parts after some good bash sessions with it. I dont want another gas engine. The one I have now is a beast for torque but seeing that its a 30cc it has no good topend. The whole gas concept of it just bothers me so Ill just give it a shot...

Ok you guys heres the plan. So far heres what I've chosen for my setup....

ESC "Brushed 36v 650w"- http://www.electricscooterparts.com/...ntrollers.html

Motor "Brushed"- http://shop.vendio.com/remo032/item/.../?s=1220870034

Battery's- Not exactly sure yet...

might be better off runing some lead acids

Running 36v lead acid will weigh in at around 12-20lbs. Im stuck with lipo/liion.

well if it can move a scooter triple the weight, it should move the mcd at triple the speed ;)

Very good repel responce Ben... You've got me thinking- http://www.electricscooterparts.com/batteries.html

:yes: :yes: :yes:

I will be using 6mm bullet aswell.

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)

that motro was only 350w wasnt it? how you gnna get 4000+ out of it

I typed in 350w and it says total watts to be at 4180 total watts so Im guessing its right...

Ok guys here are the long awaited pics... I gutted it yesterday and it is almost 100% prepped for the conversion. Ill get some more pics later.

http://i301.photobucket.com/albums/n...ownRCU/1-4.jpg

http://i301.photobucket.com/albums/n...ownRCU/2-4.jpg

http://i301.photobucket.com/albums/n...ownRCU/3-4.jpg

http://i301.photobucket.com/albums/n...ownRCU/4-3.jpg

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

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

a big outrunner would be nice in there..... :yes:

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.

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

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

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:

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.

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.

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.

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

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

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:

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

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 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:

The thing I dont understand is. I own a currie 400w 24v scooter. I can wheelie with ease on a full battery and can hit 21mph. Im dropping 50w and upping the voltage by almost double. This would be plenty of power for my 1/5? :neutral:

I think the wattage issue may be due to different usage of the unit of measure (the watt). For example: I've seen where brushless systems provide EagleTree data indicating they produce upwards of 3000 watts using a NEU 15-series motor @ 6s.

However, there's no way I could install a 1515 NEU motor and 24v worth of batteries on my pocket bike and move at all or any real speed. But my 1200-watt motor will propel my pocket bike (with me on it) to 28 mph.

Perhaps someone else can chime in on this and explain the logic. Without trying to do calculations, I do know from experience with the permanent DC magnet motors that you could build a potent 1/5 scale vehicle with a 350w motor that's normally rated at 24v. I think the size and weight of the motor make it ideal for use and the fact that you can "over-volt" the motors to 48v without much harm since it's being used for a RC vehicle and not to haul someone around.

Thats exactly what I was thinking killajb. I want to get to the bottom of this. Since my 1/5 has both a Tranny and a Center Diff it took me awhile to calculate everything just right.

Heres is the layout I plan to run and its specs...

http://i301.photobucket.com/albums/n...nRCU/clacs.jpg

Torque from different size also has a major role in a low watt brushless motor. I've seen electric cars (real size) that only has a 3000-5000 watt motor, but they can go as fast as 50mph. It's the torque that's making it go that fast. You can go with one of the large outrunner type motor and it has plenty of torque to move a 1/5 scale to fun speeds or a efficient running set up for long run times.

I do have high hopes with my setup. Im expecting atleast 30mph with higher gearing and some good torque and runtimes.

Ok here is a few pics of the battery placement. In the pics I am using a 4.5ah 12v lead acid which is the same size and the 5ah 12v. I also have a few pics of the fan mod I did. As you can tell its dark and gloomy outside. Its rained all day and is suppose to rain tommoro...

Fan Mod..
http://i301.photobucket.com/albums/n...ownRCU/4-5.jpg

http://i301.photobucket.com/albums/n...ownRCU/2-6.jpg



Battery placements...

http://i301.photobucket.com/albums/n...ownRCU/5-4.jpg

http://i301.photobucket.com/albums/n...ownRCU/3-6.jpg

http://i301.photobucket.com/albums/n...ownRCU/1-7.jpg

is the 12v pack bolted down?

This seems like a very interesting project and I may just try one myself..

I already have a few scooter motors. As well, I have plenty of SLA batteries to try out. The 4.5ah battery is still a beast for this set-up. My fastest pocket bike was when I used lighter, less amp-hour batteries to save overall weight. Try Home Depot, they sell 6v and 12v SLA batteries in 1-2ah range. They are a lot smaller, still cheap and will enable you to place the batteries for better balance. I think a 48v setup would fly. By "over-volting" my permanent magnet DC motors, they seemed to have less torque but obviously way more top end, ideal for RC.

No they arent secured yet. Ill use some xl G3 straps if they fit and I have to make 3 trays. Killajb- I can get three 12v 5ah pb's online shipped for $56.

so how much "gas powering" weight did you remove and how much are the PB batts and electric motor gonna weigh in comparison to what you took out?