Reposting pics of axle link mounts

[Trac95ker]

Cut the arm off the link arm. Use it as a template. Trace it onto a piece of angle.

Make a left and a right. Screw them to the link arm and put them on the axle. Rotate pinion if desired at this time. Measure the distance between the mounts. Cut a flat piece of angle for the platform. You should take measurments for a servo mount if desired. Cut small pieces of angle for the upper link mounts.

This is what it looks like unassembled.
This is it on the axle.

[NeoSlayer888]

Looks good, I like the limiter straps.

[kingcobra]

the way I did mine was half the work of this one...but both ways do the job I guess.

[Trac95ker]

post some pics.

[Trac95ker]

I searched and saw what you did. You made a servo mount out of a piece of tin. It looks like its held on by two screws. Since you just have a 106 oz servo it may hold up for a little while. Then, your screws will work loose and strip the plastic. If you decide to put BBs in the tires, your servo will become a ground for your battery!

I made something different. My setup strengthens the axle housing and mounts the upper links and steering bell cranks. Of course mine took longer to build. More thought and work went into making it. It was worth it. Like you said "both will work, I guess." Good luck, I'm looking foward to seeing your progress

[kingcobra]

my servo mount is aircraft grade aluminum (extremely strong, don't let its being thin fool you) and not tin. and there won't be any BB's in my tires as I consider that to be cheating. also my screws have thick CA on the threads to help make sure they don't come loose...and so far so good.

[Trac95ker]

I guess cruising around in mud and going over a 1" log (as you bragged about on the other RC forum) doesn't really test your rig. After you've done some real crawling get back to me. If I used your design with my servo (343 oz.) it would have ripped the mount off the axle. As far as the BB's - this is a crawling website and people build and modify rigs in order to go over rocks and climb steep obstacles - BB's are a modification that make your rig more capable. You have done some modifications to your rig...just cause you lower the gear ratio don't mean it's a crawler, so next time don't compare apples to oranges.

[pinkfloydman]

wow that was harsh

[Reflection]

Originally Posted by pinkfloydman

wow that was harsh

But also the truth.

This kingcobra guy came here not long ago bragging on his idea and cartoon crawler,his drawings,to me,look like they came out of a cartoon. Also accusing Dirk Diggler,of all to choose, of not knowing what a real crawler looks like. All his bragging and talking like he knows aaaaaaaall about crawlers and we've yet to see anything thats really that impressive. I mean hell,my 8 year old son can,and is really,build a better crawler out of his Twin than this kingcobra dude. I'm letting my son do all the work on his. I'm helping with where to put stuff and setting things up but he's building everything. He made all his links,locked his diffs,assembled the axles and mounted the axles to the chassis Saturday. On Sunday I helped him assemble his tranny and put it in the chassis,then he mounted his speed control and rec. and he mounted his new LST's. We also painted his body. Mainly all he needs to finish is a servo for the steering and we've got the rest here and ready to go in.

Anyway,kingcobra's links are weenee links,I mean,anyone can go to the LHS and buy that stuff and throw links together but they are weak as hell. They wouldn't last 10 minutes on my rig and they'd be bent all to hell. He used the smallest rod ends around and his links are probly as stout as the lead in a No.2 pencil. His servo mount is weak. His so called "aircraft grade aluminum" Airplaines aren't indistructable ya know. My dad and father in law retired from McDonald Douglas Aircraft Co. in Longbeach,CA. I think it's Boweing now or something,I believe there was a big company merge or something. Trust me,we got alot of material brought home over the years,just cause it's" aircraft grade" doesn't mean a whole hell of alot. If it's thin,geuss what,it's still thin,the "aircraft grade" doesn't make it bomb proof. And then he goes and puts rediculously small tires on it. I mean come on here,anyone of us would atest that one of the biggest things in crawling is ground clearence. If kingcobra knows all about crawlers he would know that going to a smaller tire will hurt his performance.

Honestly,I think kingcobra is just a punk thats full of hot air.

[Trac95ker]

I did'nt appreciate any of his back hand comments. Since he did'nt know the difference between the two mounts, I had to explain it to him. From reading his other posts, it seems like he has a chip on his shoulder.

[kingcobra]

all I did was set the record straight about my rig...and raptor my links are 1/4" 304 stainless steel...I doubt very seriously you can make any stronger then these. the rod ends might break but the link WON'T bend.

[Reflection]

Originally Posted by kingcobra

I doubt very seriously you can make any stronger then these.

I wouldn't be so quick to jump there just yet.

Originally Posted by kingcobra

the rod ends might break but the link WON'T bend.

I wouldn't say that now. I bet I could bend'em :-P

[kingcobra]

not too familiar with your metals are ya? the next hardest metal would be titanium. and its too brittle.

[NeoSlayer888]

At least for ultimate tensile strength SS 304 < SS 19-9 < Titanium Ti-6Al-2Sn-2Zr-2Mo-2Cr-.25Si, Annealed. The numbers for tensile are 505MPa, 838MPa, and 1030MPa. But that is not the bend strength or modulus of elasticity. I think.

[kingcobra]

sounded good...

[diesel72]

If Ti is so brittle as to be unsuitable for links, how is it used for turnbuckles and things like bicycles or aircraft frames?

[kingcobra]

titanium WILL snap in two if given the right force...but you WON'T snap stainless...its a much softer metal than TI, think of stainless as aluminum on steriods. it's kinda soft, much heavier yet doesn't bend as easily and also won't corrode.

[DirkDigler]

Right....Keep in mind that Titanium is mostly used in high stress situations, such as air craft and space craft where there are tremendous G forces put on such materials. Titanium will not tear or be ripped apart under extreme conditions. Titanium is NOT designed for high impact stress, as it is very brittle. The RC hobby industry started pushing titanium as a good material to use on our little pint sized rigs because when people think.....TITANIUM....they think strength, however, the application is completely wrong. In the RC car and truck world, impacts are our greatest source of breakage. Tmaxx's running into curbs and trees, etc! Titanium is a great marketing source for the companies to make tons of money....because, as we all know, Titanium is known to be an expensive metal but when bought in raw form, in bulk, can be relatively low in cost. Stick to aluminum... or like kingcobra said, go with stainless steel if weight is not a major concern. It's much more likely to take the impacts that we like to dish out on our rc cars.

[Trac95ker]

Make two L brackets. Put two countersunk holes in the plate where the L brackets will be mounted. mount the L brackets from underneath ( between the axle and the bottom of the plate). Use two countersunk screws. Lay the servo on the plate and scribe mounting holes. Drill the holes and bolt it together.

[kingcobra]

Originally Posted by Trac95ker

I guess cruising around in mud and going over a 1" log (as you bragged about on the other RC forum) doesn't really test your rig. After you've done some real crawling get back to me. If I used your design with my servo (343 oz.) it would have ripped the mount off the axle. As far as the BB's - this is a crawling website and people build and modify rigs in order to go over rocks and climb steep obstacles - BB's are a modification that make your rig more capable. You have done some modifications to your rig...just cause you lower the gear ratio don't mean it's a crawler, so next time don't compare apples to oranges.

what I meant was it was pusing over small trees that were 1" in diameter and and running right over them....lol