build a gmaxx and i need help

[suicideneil]

If you have access to CNC equipment then it should be pretty easy, Im sure AngryAlien can provide you with some dimensions, then just pick up center diff to work with.

We at RC-Monster have a proud history of building our own motor mounts and center diff units when there isnt one suitable that you can buy

[Maxxrickard]

i was thinking too buy a CD mount and rebuild it with other materia...som 1:8 mount and CD that is better to use than other?
is it possible to use a "normal" CD för 1:8? will i not break my motor? what gearing? pinion/spur when i use 5s.

yes i use to work with CAD and CNC equipment, but just in wood...

[Maxxrickard]

does anybody know what mount "jordan" started with?:http://www.rc-monster.com/forum/show...?t=9731&page=9
this is beautiful and pretty easy..
...i find it,93$

can i start with any of this one:http://shop.ebay.com/?_from=R40&_trk...All-Categories
i think i would like it in alloy

[ANGRY-ALIEN]

Originally Posted by G-revoRickard

does anybody know what mount "jordan" started with?:http://www.rc-monster.com/forum/show...?t=9731&page=9
this is beautiful and pretty easy..

http://www.rc-monster.com/forum/show...?t=9731&page=6



I believe this is the item you are looking for: X-RAY XB8 Alu Center Diff Mounting Plate Set

Other options to search for are the OFNA LX ONE and OFNA JAMMIN mounts.

Hope this helped...

[Maxxrickard]

thanks, its a start. but i think i would like it in alloy and ofnas/xrays are very expensive(?)

[ANGRY-ALIEN]

Yes they are... you will have to watch ebay for reasonably priced ones... they pop every now and then.

[Maxxrickard]

our truck is beautiful. do you cut the carbon with water?
it should be possible to put the center to the FLM center skidplate.or i am i wrong?

[ANGRY-ALIEN]

Originally Posted by G-revoRickard

our truck is beautiful. do you cut the carbon with water?
it should be possible to put the center to the FLM center skidplate.or i am i wrong?

Thanks man... I got the carbon cut on a CNC router (with a 1/8 tungsten carbide bit)... I think the skid would make a great platform to mount CD with no worries.

Alien

[Maxxrickard]

Mike is a hero. He mailed me back:


"Rickard,

It is my intention to make a batch of these and offer them on the site for sale early in the new year(a couple weeks). J


Mike

RC-Monster

www.rc-monster.com"

[Maxxrickard]

is it any difference between 1:8 center diffs?can i use whichever?
i have HB diffs and i think i will go for a Hot Bodies Center Diff Hardened 50T Lightning:http://www3.towerhobbies.com/cgi-bin...&I=LXLGX1&P=SM

how about the gearing?any suggestions? 2200kv motor and 5s.

it looks that mike will make a batch of these, but if he dont i will build one by my self with a plastic center mount and CF...

[ANGRY-ALIEN]

Originally Posted by G-revoRickard

is it any difference between 1:8 center diffs?can i use whichever?
i have HB diffs and i think i will go for a Hot Bodies Center Diff Hardened 50T Lightning:http://www3.towerhobbies.com/cgi-bin...&I=LXLGX1&P=SM

how about the gearing?any suggestions? 2200kv motor and 5s.

it looks that mike will make a batch of these, but if he dont i will build one by my self with a plastic center mount and CF...

I think some Brands/models may differ with the bearing sizes and overall length... for example: the OFNA LX ONE I'm currently using has larger bearings than the OFNA SPIDER
I want to switch over to... So I am now in the process of redesigning the CD/motor mount to Facilitate it.

I hope the below helps... did some guessing with tire size and diff ratio.

Option 1

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 50
Pinion Tooth Count: 12
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65 - (Not sure if this is the size tire you are using)
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.17 : 1
Total Ratio: 17.91667 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 0.99:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 38.18 mph (61.34 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A


Option 2

Differential Ratio: 4.3 (I am assuming the this ratio is correct)
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 50
Pinion Tooth Count: 11
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.55 : 1
Total Ratio: 19.54545 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 0.91:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 35 mph (56.22 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A

[Maxxrickard]

thanks i think it will help me some day.
what CD should i buy? if mike build a CD mount, what diff fits in that?

[ANGRY-ALIEN]

Originally Posted by G-revoRickard

thanks i think it will help me some day.
what CD should i buy? if mike build a CD mount, what diff fits in that?

Mike is the perfect person to ask... He can tell you what spur sizes and what bearings will fit in there... you should be able to use HB and OFNA with that mount...
not sure what models though... drop Mike a mail and confirm it with him... You can ask JoFreak also, he just got one from Mike.

[Maxxrickard]

hmm if i use a CD do i have to change the diff pinion?(13T)
please help dont understund brians calculation...
2200kv
5s
HB lightning diff 13tpinion
maxx masher tires...


please help me

[ANGRY-ALIEN]

Originally Posted by G-revoRickard

hmm if i use a CD do i have to change the diff pinion?(13T)
please help dont understund brians calculation...
2200kv
5s
HB lightning diff 13tpinion
maxx masher tires...


please help me

Oh... well, as I said before I had to do some guessing since you didn't give a whole lot details before... So I made some changes with the info provided...
I don't think you'll have to change your pinion... See if the below makes any sense to you.

5s

Differential Ratio: 3.3076923076923075 <--- HB lightning diff ratio (13t pinion and 43 spur)
Transmission Ratio: 1 <--- no gear box
Other Ratio: 1
Spur Tooth Count: 50
Pinion Tooth Count: 11
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.8 <---- Mashers
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.55 : 1
Total Ratio: 15.03497 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Rollout: 1.21:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 46.71 mph (75.03 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A

4s

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 50
Pinion Tooth Count: 11
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.55 : 1
Total Ratio: 15.03497 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Rollout: 1.21:1
Total Motor Speed: 32560 RPM
Vehicle Speed: 37.37 mph (60.03 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A


Let me know if this helps..

Alien