TLT build - Titan

[Sync]

I am getting back into RC trucks again... so i made this web site to document my progress on a TLT build up.

http://www.teeceetee.com/tltbuild/index.htm

suggestions / comments are always welcome


3-26-2006
I got the sw2 chassis in the mail on friday so i started the build up. lots of new pics and comments...

3-31-2006
Whoot!! I "finished" the truck. lots of new pics and comments...

4-08-2006
I got some drive time in and i made some videos. see the bottom of the web site linked from above.

[Crawlsalot]

looks like a good start. Benders chassis is amazing, you will be impressed.

[JeremyH]

Looks good!!

[metomwhou]

Can you give some specs on that esc? I thought those were boat esc's?

[briggs]

Looks good, and yes the bender chassic works great...

[FFRCJosh]

I was wondering where you got the pede tranny. Like all the parts

[Sync]

thanks for the comments, all.

i got the speed control about 5 years ago from UltimateHobbies (i used to live about 5 miles from them) and i bought it for a XXX-T. i wasnt aware that it was an esc for boats. when i bought it, the dude behind the counter pulled the speed control out of a cabinet in the RC truck area. but who knows? looking back on it, i think it was kinda expensive... around $120.00. it is fairly small compared to other esc's i have seen.. about 1" x 1" x 0.5". i am at work right now, so i dont have the spec's on it. when i get a chance, however, i will post it here.

the pede tranny i got from Tammies Hobbies for $50.00. i must say, the people and the service at that shop are excellent ( i spoke with brian 1-800-521-5614). i got my order in 3 working days.

[Sync]

here are the specs on the esc i have:

Keyence A-07R:
Size: 31mm x 26.5mm x 18mm
weight: 26g
FET qyantity: 24
"ON" Resistance: 0.0018 ohms (FET data) / .003 ohms (Actual data)
Applicable motor: over 7 turns
PWM frequency: 2930hz
Receiver/servo regulator: 7.2 V input, 5.8 V output, 1 Amp max.


hmm... with using 2 servos, i wonder if those would draw more than 1 amp?
anyone know what the draw is on the HS-645's?

[Sync]

hah... a little searching and i found the answer (in red):


Control System: +Pulse Width Control 1500usec Neutral
Required Pulse: 3-5 Volt Peak to Peak Square Wave
Operating Voltage: 4.8-6.0 Volts
Operating Temperature Range: -20 to +60 Degree C
Operating Speed (4.8V): 0.24sec/60 degrees at no load
Operating Speed (6.0V): 0.20sec/60 degrees at no load
Stall Torque (4.8V): 106.93 oz/in. (7.7kg.cm)
Stall Torque (6.0V): 133.31 oz/in. (9.6kg.cm)
Operating Angle: 45 Deg. one side pulse traveling 400usec
360 Modifiable: Yes
Direction: Clockwise/Pulse Traveling 1500 to 1900usec
Current Drain (4.8V): 8.8mA/idle and 350mA no load operating
Current Drain (6.0V): 9.1mA/idle and 450mA no load operating
Dead Band Width: 8usec
Motor Type: 3 Pole Ferrite
Potentiometer Drive: Indirect Drive
Bearing Type: Dual Ball Bearing
Gear Type: 3 Metal Gears and 1 Resin Metal Gear
Connector Wire Length: 11.81" (300mm)
Dimensions: 1.59" x 0.77"x 1.48" (40.6 x 19.8 x 37.8mm)
Weight: 1.94oz. (55.2g)


so, 2 of the 645's would draw 0.9 Amps

[Sync]

bump

[Nate666]

nice build

[BENDER]

Nice work, I like the before and after pics.

The battery touching the chassis shouldn't affect the suspension, unless your zip-tie is really tight. I have velcro between the top of the servo and the battery, then I lightly tighten up the zip-tie. The Velcro stops the battery from sliding back and forth, but lets the battery move as needed while the suspension cycles. The zip-tie just keeps the battery from falling off.

Make sure all your rodends are moving freely too. A few guys have had binding issues because they overtightened the links into the rodends. This can pinch the ball in the rod end enough to cause binding.

[racerx]

I've had very good luck w/ the hot glue, I've built 4 tlt's w/ it and never had one slip yet. Including my comp rig and one I built for my 7 tr. old daughter ( and she never lets up on the throttle when bound up!!) I think there are diff. types of glue sticks, some harder than others. Also when I'm locking them I heat up the ring gear side of the diff w/ heat gun so it does'nt cool to fast. Then I turn the gears to "coat" them w/ glue, then slap on the cover and screw it together. Don't forget blue locktight on the small screws.

I forgot to say SWEET! Very nice buidup, I don't have enough patience to take pic's and build at the same time. I always go to the garage w/ the camera and start building and by the time I'm done I've taken only 1 or 2 pics! Oh well, nice work though!!

[Sync]

thanks for the comments, guys.



ya.... the zip tie is very tight. i will have to try the velcro/zip tie idea.

i checked all the balls in the rod ends and they all move freely. the angle on the upper links, however, is great enough that there is some binding. or perhaps it is the screws/bolts/washers that are pressing too tight against the rod ends that is causing it. should all the links (when bolted in) be very free moving?


i also remeasured the chassis height tonight and it is at 3.5 inches (sheesh... i messed up on that messurement from before). when i reassemble everything, i think i am going to move the shocks to the upper holes on the chassis and maybe one hole in closer to the center of the chassis. that should lower the ride height a little (and move the drive shafts in a tad to get more bite). i will probably have to tighten the springs a little as well. hopefully, i wont get too much torque twist from reloacting the shocks.

"Also when I'm locking them I heat up the ring gear side of the diff w/ heat gun so it does'nt cool to fast. Then I turn the gears to "coat" them w/ glue, then slap on the cover and screw it together."


hmm... that is a good idea. all i did was squirt the glue inbetween the gears until it was a gear/glue blob. tonight, when i took apart the diffs (to prep for re-locking), the glue popped out in 3 distinct chunks. oh well. i am going to use JB weld and be done with it



thanks again for the feedback.


i will post more pics as i reassemble this thing

[Sync]

bump

[stephane]

very cool ride like youre project

[Sync]

I got some drive time in and i made some videos.

see the bottom of this page:
http://www.teeceetee.com/tltbuild/

if you cant view them using quicktime, you can download them to your computer and run them using windows media player.

when viewing the videos, if you can see any needed modifications/adjustments that would improve the truck, let me know.

enjoy