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-   -   super bit charge mosfets (http://tinyrc.com/forums/showthread.php?t=12286)

boho 07-13-2003 03:25 AM

super bit charge mosfets
 
I've got a super bit/porsche. It seems to have an extreme amount of torque. Can somebody check the mosfets and see if they are putting out less ohms. I put a 3.8 in it and it still has tons more torque then the old stocks. In fact any motor I put in seems to achieve it's top speed very rapidly in the new bits.

Also has anybody experienced any glitches yet? mine sometimes continues to go forward or back after I let off the gas. I wasn't pushing anything else either.

PseduoRooter 07-13-2003 09:08 AM

Yup mine does the very same thing. And the tires spin quite a lot on take off. Even with the stock 1.6. I put a KIT 2.6 in my LP500 till I get something better. Man does it ever spin now!

jono123 07-13-2003 10:06 AM

ME 3
 
im having the same thing as u guy with my lambo includin the stiking motion. is any of ur ranges realyy rubbish aswell say about 5 to 6 feet?
i cant find a crip cap either?????????????
i think the body of the lambo is beute though:D

PseduoRooter 07-13-2003 02:46 PM

My range seems to be slightly better than average for an unmodded bit. I definately get more than 5 or 6 feet though.

boho 07-13-2003 08:55 PM

My range is pretty darn good. It sounds like tomy forgot to use quality control on these cars.

Also, my prsche's chassis has a very low ground clearing. It kept catching on little pieces of crud on the ground, or it would catch easily on carpet. I wipped out my dremmel and went to town. Made the ground clearence higher. It doesn't get caught on crap now.

jono123 07-14-2003 02:41 PM

how much range du u lot get?and any suggestions why u r getting so much range and im not?mine is a 27mhz A

hue35 07-14-2003 03:06 PM

I don't own one of these cars yet, but I'd bet the smaller rear wheel diameter has a lot to do with the increase in torque.

hue35

PseduoRooter 07-14-2003 05:08 PM

The tires on the new ones are the exact same size a pullback wheel. Not as wide mind youn but same height.

hue35 07-14-2003 06:30 PM

Right... and, that smaller diameter is what delivers the extra torque.

PseduoRooter 07-14-2003 09:03 PM

Makes sense.

nghts 07-15-2003 01:08 AM

if ur getting sliding wheels it might be that one of the wheels is loose on the axle, happened to me once

PseduoRooter 07-15-2003 07:13 PM

Not sliding wheels, just lots of wheelspin on takeoff. Seems to be due to the slightly smaller rear tires ;)

DarkTari 07-15-2003 07:39 PM

They all have about 0.1 ground clearance (none) but a set of 9.5mm alloy's will take care of that!

boho 07-17-2003 08:41 AM

Jono, sorry I never got back with you. Mine is 27mhzB. As far as why some get good range and some don't, well that's a bit of a mystery, to me at least. I've tried all the range modifications, but some just won't get much better. It's a fact we have to live with. Until I became a communications electronics guru, then I just wont understand it fully.

I do know that most bit/micro cars don't have enough power going to their antenna though. They have weak signals because of weak design.

Take r/c planes for example. They use controllers that put bit controllers to shame and they average about 200~800ft range.

Oh, and Tari, those rims are money. That's my next project.

boho 07-17-2003 10:12 AM

Hey, anybody check those mosfets yet? I have a cheap multimeter, but I'm not sure exactly how to test it. Also, it's cheap. It might not be able to test it.

I just ordered a bunch of batteries. As soon as they get here I'll dual cell the super bit. I'll let you guys know how it comes out and compares to the old ones. Right now the stock super does seem to have alot on my old stocks, if I could just fix that friggin sticking problem!:mad:


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