2.2 Comp Clod Build

[cartronicshn]

Originally Posted by pbarsamian

Thanks Guys!

Wheels: I cut them with a bandsaw, lathed each end to get them flat and reglued. That narrowed them about .5 - 5/8" effectively. I didn't measure exact because I cut between the ribbing and took out one of the rib sections on the inside on each wheel. I assumed the ribbing was consistent (and it seemed to be). I'm going to try as is, and if I get annoyed that they aren't narrow enough, I'll pull them and repeat the process to remove a second rib..


More to come...

Ok thanks, and did i say it looks great

Originally Posted by STANG KILLA SS

if i recall right i removed two sections narrownig them to just a hair over 2" wide.

That's what i am looking to do, thanks stang

[pbarsamian]

made some progress, cnc'ed up some 6061 servo mounts. Also got the linkages done for front and rear steer...




Also cut the delrin skid, need to drill it and do the 45 degree chamfers on it...

[hardhead]

Looks great .But those rod ends look small might want to go with 4mm revo ends..

[pbarsamian]

More progress, finished the two piece light bar, (still need to install LEDs and wire them)

[pbarsamian]

Thanks Hardhead,

Re: rod ends, for the 7 bucks it cost me for this set, I'm going to give them a whirl and if it doesn't work, the drill and tap to 4mm is only a mild annoyance and pretty easy to do. But good suggestion...

[pbarsamian]

Finally got a spool of lead rope, any suggestions on starting point for weights fr/rear?

I've got 5lbs worth so as long as the total doesn't go over that, I'm good

[gyrene]

That light bar looks TOUGH!!

[twisted crawler]

Nice setup you have and some very nice work youve done
Like the light bar, nice tuch to a great looking custom truck.
I would love to have a small cnc and lath set up. Keep up the great work.
Looking forward to seeing the finished truck.

[pbarsamian]

Thanks guys.

A bit more progress last night, I'm inching along here...

[skinner]

geez that's one slick build..... on way u did it.

[pbarsamian]

more progress, finished rear grill/ light bar and back trunk panel

[allenvince]

Originally Posted by pbarsamian

Thanks Guys!

Wheels: I cut them with a bandsaw, lathed each end to get them flat and reglued. That narrowed them about .5 - 5/8" effectively. I didn't measure exact because I cut between the ribbing and took out one of the rib sections on the inside on each wheel. I assumed the ribbing was consistent (and it seemed to be). I'm going to try as is, and if I get annoyed that they aren't narrow enough, I'll pull them and repeat the process to remove a second rib..

More to come...

i want to ask whats the difference between NARROW and Standard size of Wheels?thanks

[pbarsamian]

My understanding is that it helps get more pressure on smaller surface area of the tire to get better traction when you don't have a lot of rock surface area to put rubber on. Common sense tells me this is a bit of a balancing act though.

Any of the professors here care to clarify?

[hodgy_789]

This thing is prime man
good job on the milling an CNC. Youve done an awesome job

[pbarsamian]

Thanks Hodgy.

Updates:

1) Cut a delrin lower skid with chamfered edges
2) Modified my Tq2.4 4 ch tx to change the red thumb button on ch3 to a 3 position switch (to allow rear, both, and front dig selection)
4) built the prototype TQ steering mixer for the 4th channel.

The steering mixer takes input from channels 4, 5, and from the second channel 1 space on the TQ receiver. By flipping the channel 4 switch I can now select 4 wheel steering (mixed directly proportional to the steering channel input), crab (again mixed directly proportional to the steering channel), and locked out for front only steering. This is based on a 12F683 PIC with some pretty basic code.





Next step is to build the throttle/DIG mixer...

[pbarsamian]

Got it running!

Finished the electronic mixers and got everything hooked up (provisionally, now I need to tune).

Quick vid of the DIG and steering mixing using a TQ2.4 radio with a 3 way switch added to it:



And a semi-final pic

[pbarsamian]

Now I need to weight the wheels, work on suspension tuning, and figure out if I have the right gear ratio. I ran it on the rock pile in the back and it was ok on the jagged horizontal stuff but the vert felt a bit anemic. I might look into a lowered gear ratio.

I alread broke and replaced a knuckle, I'm starting to think I may be reaching the limits of the clod axles and I'm actively working on figuring out how to get a hold of a set of super bullys (maybe with the 65/1 gear ratio)...