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Discussion Starter · #1 · (Edited)
Here is a bit of background on myself. I own 2 49cc cat eye pocket bikes and an mx350. Thanks to CAM2, EPR, and various others on the air cooled section, I was able to fix up my two pocket bikes. I have had my 350 for 5+ years and the batteries finally went out. After reading some posts regarding this subject, I have decided instead of keeping it stock, I want to upgrade it, but need a bit of advice. I want to make this bike a good overall bike. Meaning I would like it to have a balanced top speed, acceleration, and run time.
Desired Upgrades:
Motor- 36v 750 or 1000 watt (bottom mounting bracket)
http://tncscooters.com/index.php?route=product/category&path=52_56
Controller- I'm not sure maybe this one.
http://tncscooters.com/index.php?route=product/product&path=41_74&product_id=182
Batteries- 36v 12ah
http://www.monsterscooterparts.com/ramxbaset.html
Charger- 36v
http://www.monsterscooterparts.com/36vo16amp3ba.html
Throttle- 36v w/ indicators
http://tncscooters.com/index.phproute=product/product&path=65_79_84&product_id=349
Switch/charger port- Could i just use the original one that comes with the 350 or are they not compatible with 36v stuff?
Rear Sprocket- no clue.
 

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that's some big s$*% you are putting in that tiny bike.
you are going to have to try and rig something up to hold it all in. and at the speeds you want, could be dangerous.
why not try another identical motor? you can mount it below the old one and get plenty of power, and more flexibility?

http://www.youtube.com/watch?v=MGtShs_3i8w

(2) 24v motors on 48v 7ah batteries.

80t rear, MX500 tires. they are 16" yours are 12" so your 80t gear will pick up off the line quicker.

simliar to your 350...this is a pocket mod with a 1000watt 36v motor on 48v. same 80t gear
http://www.youtube.com/watch?v=s1UP9MeDra8&feature=relmfu
 

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Discussion Starter · #4 ·
Im basically set on a complete 24 to 48v conversion. Yea it is a small frame, but so far i have been able to fit in the batteries and figure out a spot for the controller. I still need to order the 48v motor, throttle, and charger. I do definitely need to build a case for the batteries/ controller before i take it off road or drive it through any water.
 

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you'll have more power and head room if you run 2 24v motors on 48v than 48v on a 48v motor. that's what i'm trying to tell you. run them in parallel with a 40amp controller. 2 350watt motors will be a beast on 60v! smaller batteries, but more of them.
 

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Discussion Starter · #6 ·
In order to run 2 motors, I would need to fabricate a new mounting area. If i were to mount top bottom, then i would need a new chain and it wouldn't be to go off road. If i do a 48v motor all i would need to do is put the chain guard on for a bit of protection. I might need to drill new holes and possibly fabricate an end cap to protect the back side of the engine in case i drop the bike. I would prefer to do the 48v because it is simpler in my opinion and for some reason want to do a pure 48v conversion since there aren't many mx350's with 48v everything. Also to put 60v in the frame it would need some extra fabrication, which means more money and time
 

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Discussion Starter · #8 ·
The reason i did that was because at first i was just putting random parts together and really did need some help. Since nobody was responding at first, it forced me to kinda figure it out myself and that is how a came up with a complete 48v setup that i am happy with. I still do need some advice on braking though. thanks
 
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