Project Super-VBS-CF-Gorillamaxx!!!

[lutach]

Originally Posted by jordan...

Ahh ok, lucky then, ill look into another motor mount. Good to know theres still some speed left in it

You should've been flying, but on grass your ESC just went into reduced power mode.

[BL_RV0]

Starting to make sense...

[jordan...]

Originally Posted by lutach

You should've been flying, but on grass your ESC just went into reduced power mode.

It did slow down even more just before i decided to stop, i thoguht it might have been the batteries, but it must have been the ESC. Starting to make sense... .........

[BL_RV0]

[jordan...]

I just pulled the motor and esc off the truck and found i have melted the bottom heatshrink on the ESC, can i just unscrew the heatsinks and re shrink wrap it?







Also, when i pulled the heatshrink off of the gold connectors, i found one of the motor wires had become detached and was only being held in place by the heatshrink. Looks pretty toasty in the connector. Could this have caused the overheating, or is it definately the gearing?



any help would be good, i think this is definately operator error though

[BL_RV0]

Which solder did you use for the bullets? You can just re-shrink the MGM. Make sure to hold the lighter as far away as possible so you don't fry the internals. Why not retrofit your motormount to be adjustable? Why would you (in your right mind) gear so high?

[jordan...]

Not sure what solder exactly, i just bought it from the electronics place. Its 99.3% tin and .7% copper if that helps . Good to know about the mgm, i'll make sure to do that. With the gearing, i had no idea where to start because AFAIK there are no others trucks with the same ratios as this, so i just picked 16t, i didnt think id be THAT far off the mark

I think i might try fit a 50t spur on, to get this gearing thing sorted, i might have to notch the frame rails though. I'm still not sure... I could mod my motor mount to accept a 14t pinion, but i dunno if that will be a big enough drop.

[BL_RV0]

You can do this:
(You have a 42t spur right??)
http://scriptasylum.com/rc_speed/_gear_calc.html
Using the bottom calc with 42/16 gearing it says 31mm shaft spacing. Without changing your motor mount, you can gear 48/10 with 31mm spacing, leaving your motor mount the same, bringing you to a easier 50mph... (probably closer to 45 when all factors are considered)
Here is a 10t pinion and some 48t spurs, not sure which config you need:
http://www3.towerhobbies.com/cgi-bin...?&I=LXUPN2&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXLMT7&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXVHB7&P=7

[JERRY2KONE]

It's called a learning curve RVO. Anyway Jordan that lose connection probably caused most of your overheating problems, but you still want to start out easy with the gearing up front to see how it handles first. Then as you see the data (IE: temps, speed, & operation) you can gear up until you reach a happy medium. I do hope that you did not do any damage to the ESC.

Just clean out that plug and resolder it correctly and you should be fine with that. I would look real closely at the other connections as well. Then work on getting your gearing correct according the the recommendations from Lutach.

[jordan...]

Originally Posted by JERRY2KONE

It's called a learning curve RVO. Anyway Jordan that lose connection probably caused most of your overheating problems, but you still want to start out easy with the gearing up front to see how it handles first. Then as you see the data (IE: temps, speed, & operation) you can gear up until you reach a happy medium. I do hope that you did not do any damage to the ESC.

Just clean out that plug and resolder it correctly and you should be fine with that. I would look real closely at the other connections as well. Then work on getting your gearing correct according the the recommendations from Lutach.

Sorry Jerry, i didn't see this post earlier great advice. I'm going to go with the recommendations of Lutach an BL_RVO and gear it for around 50mph. I don't think i did any damage to the controller, all the components look ok, i did stop straight away when i saw it at 180F