brushless 1/5 4wd conversion about to begin! couple questions.

[Mentat]

well. I wont be buying a mini-mill or anything like that. WAY to much at least i think it is. i would rather hire out my projects to a shop. thanks for the info, and the offer still stands on the autocad drawings

[_paralyzed_]

Originally Posted by Ryu James

i like the idea of a cooling system that is small enough to fit on the IGT. that would be perfect for mine. i think i will try to get ahold of him and see if he would just sell me the cooling system. i like how that fan is mounted at rear of vehicle and cools the circular piping.

If you order anything from Chris Fine I am starting a petition to get you banned from RCM.

nitrostarter should be pimp slapped for bringing him up. (Linc?)

Unless your going to spend megabucks he wont even talk to you (like he did to me when I ordered a pinion from him) and if you do spend megabucks he'll only talk to you enough to get your money and then ship at his leisure and give you poor customer service. Do an RCM search on Fine Designs you'll see.

But go down that road if you wish.....

[Mentat]

I still think the Peltier/Thermoelectric cooling systems make the most sense. I would def look into this much more, You dont even need to use the fan. Just the thermoplating is enough.

[Ryu James]

Originally Posted by _paralyzed_

If you order anything from Chris Fine I am starting a petition to get you banned from RCM.

nitrostarter should be pimp slapped for bringing him up. (Linc?)

Unless your going to spend megabucks he wont even talk to you (like he did to me when I ordered a pinion from him) and if you do spend megabucks he'll only talk to you enough to get your money and then ship at his leisure and give you poor customer service. Do an RCM search on Fine Designs you'll see.

But go down that road if you wish.....

haha. ok sounds good. i have always hated fine design stuff anyway. when i first saw a fine design IGT at my local track i thought to myself "what a POS!" the motor and battery on the same side?? anyway, point taken. still not sure how i plan to cool this thing but i can assure everyone here that no matter how it is done it will not even resemble anything like a fine design chop shop build. if i ever build a unit that reminds anyone of a fine design car then just shoot me and bury me with the RC car that i built. lol.

[Ryu James]

Originally Posted by KaztheMinotaur

I just checked my invoice and I deffinately ordered the gear with hub & set screw. This is the part number that I got: A 1C 8MYK15012

that is the same part number as mine but it came without a set screw or hole for one. i am gonna call sdp on monday and see if they will send me a new one with the set screw. you'll have to let me know if yours has the set screw when it arrives.

copy from invoice: A 1C 8MYK15012 1 $19.44/EA $19.44

[KaztheMinotaur]

The gears are scheduled to be delivered on Tuesday so I will let you know. If these gears aren't hardened you could always just drill and tap a set screw hole yourself. Sears sells individual drill and tap sets that range from $4 to $7. Are you goung to grind a flat on the motor shaft for the set screw to hold onto? Are you going to put 2 set screws in the pinion?

I ordered (3) 30mm by 30mm peltier coolers for cooling. They will work great for the ESC but a fan will probably be easier for the motor, because of the round shape.

I ordered some of those Jim Williams strap mounts for the motor. He is about 3 weeks behind making mounts though.

Do you think it would add too much weight to go 10S2P on the batteries?

[Unsullied_Spy]

I'd avoid TECs if I were you. They require a lot of power and if the hot side gets too hot you can burn the entire unit up. If that heatsink isn't enough to keep it cool then put a fan or two on it.

[_paralyzed_]

go 2p. the additional weight will pale in comparison to the additional current available.

[nitrostarter]

paralyzed- Come on now! I wasn't telling him to go through Fine. I even noted that he's a Douche! I was simply giving him the idea's and pictures for a watercooling setup.

[Ryu James]

i bought a craftsman metric tap and die set on ebay 2 weeks ago and it has already come in very handy. i used it to tap and drill holes into a set of aluminum hinge pin braces and then screwed them to the chassis. they are just like the ones you can get on the rampagehopups site but they have been out of stock forever so i just made my own. i was amazed at how well they turned out. the 5mm screws go in very smoothly and perfectly. wish i would have bought one of these sets a long time ago. i used a 1/8" drill bit for the 4mm screws and 5/32" for 5mm screw holes and both worked perfect.

so i thought about tapping the pinion myself but i really want to get the holes straight and all i have for drilling is a cordless dewalt. i do plan to flatten one side of the motor shaft and then put 2 set screws in the pinion cuz it is very long.

[RC-Monster Mike]

Our mod 1.5 pinions use a 5mm set screw. 4mm set screws are used on the mod1 pinions. :)
Oh, and the project is looking good - I am anxious to see the finished truck. :)

[Ryu James]

so i took your advice and Kaz and "grew a set" and drilled and tapped the pinion gear myself. its not perfectly straight but it went a lot better than i expected. here are some pics. you can see how long this gear is. i used 3/16" drill bit and 6mm x 1.00 tap. 6mm set screws go in perfect. fat little stubbies, they are!

[Ryu James]

Originally Posted by RC-Monster Mike

Our mod 1.5 pinions use a 5mm set screw. 4mm set screws are used on the mod1 pinions. :)
Oh, and the project is looking good - I am anxious to see the finished truck. :)

after i typed that i realized that. the reason i was thinking 4mm cuz the ramp uses 6mm screws and i thought they were 5mm so then i thought the smaller ones were 4mm. but i see both a 5mm and 6mm in the stock rampage drivetrain. i ended up using 6mm on this pinion only because i had 2 set screws the right size in 6mm. i didnt have any 5mm ones.

thanks for the feedback mike. btw, i still plan to use your pinions on this. i got the 12t only in case i am having heat issues. if i can get away with running 15t or 16t believe me, i will.

[RC-Monster Mike]

Just don't forget to harden that 12t before you try it - otherwise, you get more practice with the drilling and tapping when you make another one. :)

[KaztheMinotaur]

That pinion is really long. I was thinking about putting the set screw holes on opposite side of the hub from each other instead if "on top of " each other. That was you could make use of the entire length of the pinion if necessary.

For those who use bullet connectors: Do you cover one to prevent accidental shorting?