Easy Turn T-Maxx:Twice the Turning Power with Dual Steering Servos.

[T-MaxxxedOwt]

Whats up Nitro Addicts....Thats right the title isnt a typo...It seems that giving the T-Maxx the same dual steering option as the Revo is a reality.

Thanks to the inspiration of Canadian MGT and a sucessful operation converting my MGT to dual steering servos gave me the idea to do a similar operation on my T-Maxxes and heres what Ive come up with so far...Bear with me on this project because the demo chassis I used for the test fit is one from my newest upcoming project;- 4 Wheel Steer T-Maxx...The chassis is a 4908 extended version but it can be done to the other versions just as easily....

http://i709.photobucket.com/albums/ww99/CAM2_photo/4908%20Wild%20Maxx/x-15taillightassy573.jpg

As soon as the parts that I ordered come in Ill start converting my T-Maxxes;-Bigg Maxx 4908,Madd Maxx 4909 and Mighty Maxx 4910 into dual steering servo machines.



To acheive the dual steering servos the following tools are needed to complete this task: Dremel toolset with cutting wheels and the normal r/c car hand tools for dis-assembly....

For supplies youre gonna need a secondary bellcrank assembly,secondary servo plus additional servo mounts aswell as miscellaneous extra hardware like screws/nuts and washers and a y-connector for hooking the two servos together to add to the receiver box unless you have a receiver box with a 4th auxillary space like the Revos have...

The front bulkhead assembly complete could be removed from the chassis and the lower bulkhead braces plus the receiver box also the existing steering servo must be removed from the chassis...Theres options you can do with remounting the servo box later on in the write-up..

After removing the front clip, existing steering servo and the receiver box from the chassis take a small piece of cardboard and make a trace out of the outter contour of the chassis then take a scissor to cut the shape out.
Stick the cardboard template back onto the steering servo side and trace out the steering servo cutout hole then cut out the servo hole from the template.

Transfer the template over to the opposite side and with a sharpie marker trace out the servo marking in the template then using the dremel and a cutoff wheel cutout the secondary servo hole then test fit the servo.

After the additional servo has been cut-in and mounted-remount the original servo.Then grab the front clip and the new secondary bellcrank assembly #4945...
Remove the steering assist arm from the steering assembly and replace it with the new secondary steering control arm with steering rod and servo horn and then reinstall the front clip back onto the chassis.

Now you have two options on what you can do with the receiver box..It can be put on some stand-offs and raised up over the steering servo or it can be mounted to the front shock tower with the antenna position relocated but for my builds I opted for option #1 because its the most simplest in designs.

Im sure youre asking what Im gonna do about extra battery power for the additional servo..What I did was something similar as my MGT by adding an additional 1.2volt 2450mah energizer rechargeable but you can replace the 4 AA batteries with [4] 1.5volt 2500 mah batteries to provide the extra juice and solder in a connector for the traxxas humppack charger...With 6 volts and 2500mah of power youll have plenty of juice to last a whole bashing session without fail.

http://i709.photobucket.com/albums/ww99/CAM2_photo/4908%20Bigg%20Maxx/x-15taillightassy747.jpg

http://i709.photobucket.com/albums/ww99/CAM2_photo/4908%20Bigg%20Maxx/x-15taillightassy751.jpg

Thanks for looking and watch for my updates.

[T-MaxxxedOwt]

I finally got the time to do the dual servo surgery on my 4908 Bigg Maxx Basher....The surgery was a success in less than 2 hours from beginning to end and I even had time to snap some shots of the action....

I removed the receiver box , marked the spot with a sharpie like dye-kem , scribed out the shape of the servo and cut it in with a dremel with cutoff wheel and used a drill with 1/8 drill bit to drill the servo location holes...one of the markings was a lil off but it was corrected when drilling it out.

http://i709.photobucket.com/albums/ww99/CAM2_photo/4908%20Bigg%20Maxx/x-15taillightassy783.jpg

Heres the servo hole cut out and what it looked like.I test fit the servo and then added the other servo horn..I guess youre noticing that the surgery was performed with the truck as a whole still...It was easier for me to do it that way so I can get out to test it sooner than later....

http://i709.photobucket.com/albums/ww99/CAM2_photo/4908%20Bigg%20Maxx/x-15taillightassy796.jpg

For the servos I went with OFNA SX-0002 metal gear servos...They have descent amount of torque and reliability for the price...I got both servos for 30 bucks shipped with the "Y" connector to hook them together at the receiver box.

http://i709.photobucket.com/albums/ww99/CAM2_photo/4908%20Bigg%20Maxx/x-15taillightassy819.jpg

For the receiver box I used a spare set of throttle servo brackets to attach the receiver box over the servo as seen in the picture below..

http://i709.photobucket.com/albums/ww99/CAM2_photo/4908%20Bigg%20Maxx/x-15taillightassy799.jpg

I just got in an hour ago from testing it out and I have to say this is a "Must-Do" upgrade for all nitro powered T-Maxx bashers/racers.All the bump-steer and over-steer have been totally eliminated for a stronger more positive handling attitude and a better use enjoyability that makes me want to bash harder...Thanks for Looking.

[stouty109]

nice thanks for the step by step i look forward to doing the up grade, only thing im guna do diff is i guna use the stock servo only b/c i have some spare i try it and upgrade later if needed thanks a lot

[T-MaxxxedOwt]

Heres a couple short vids of how my dual servo upgrades operates along with the 2450 mah 6 volt power upgrades...the vids were taken with my cellphone so the quality is pretty crappy but still viewable....


This is my 4908 BiggMaxx w/Sirio.27..Mostly RPM,aluminum & steel components for heavy bashing..weighs in at 13.8lbs

http://s709.photobucket.com/albums/ww99/CAM2_photo/4908%20Bigg%20Maxx/Bigg%20Maxx%20Vids/?action=view&current=M4V02811.flv


This is my 4908 WildMaxx 3.3 w/turbo pipe..Mostly stock plastic components to keep it lightweight...weighs 10.7lbs

http://s709.photobucket.com/albums/ww99/CAM2_photo/4908%20Wild%20Maxx/4908%20WildMaxx%20vids/?action=view&current=M4V02814.flv

[pimper11@]

hi all you people that dont have rechargebel rx pack can simply tie 2 battery packs to gaether i have done this and it works awesome all you have to do is tie the -on one pack to the + on the other pack then hook the loose end to a plug then to the reciever you will notice way more speed,turqe,braking,steering all the good stuff try it and believe me the lil bit of extra wate is worth it:rctruck: