Large scale fabbed straight axle monster - Page 2 - RC-Monster Forums

lincpimp · 01.17.2010, 06:06 PM

Quote:

Originally Posted by JThiessen

Why not step up to the next level on your diffs. Seems like like we are almost at the limit of 1/8th scale diffs now. I'd think some of the 1/5th scale rigs would have something beefier for you to use.

I had thought about that, not sure where to go or what to use... Plus I would like a diff setup that has a case, as my design kinda requires that.

Semi Pro · 01.17.2010, 08:45 PM

interesting project

JThiessen · 01.17.2010, 10:12 PM

Quote:

Originally Posted by lincpimp

I had thought about that, not sure where to go or what to use...

I hear you on that. I looked around at the various 1/5th rigs, and saw nothing diff wise that blew me away. Most just have 2 spider gears. Cen's got a really funky, and quite complex assembly for theirs.

I did see that MCD has what they called "pneumatic" tires on their M/T's. They also have what they call a "lock-unlock" center diff system. They make it sound like it can be locked by the user.
I really like the hydraulic disc brake systems they have too....

NickRummy · 01.18.2010, 10:44 AM

I think the biggest challenge with using 1/5th diffs will be size. It'll be really tough to come up with something that doesn't look WAY out of place under the truck.

Linc, send me an email to nick@rummyrc.com and I'll send you some drawings I've done for a custom set of axles machined from aluminum for my truck. I have a guy lined up to machine a set but it doesn't look like he'll get to them anytime soon. Maybe we can swap some ideas and find someone to make us both a set to bring the cost down. My X-factor axles are NOT holding up the weight and power of the truck. These new axles will for sure

Here's a picture from the early stages of my mock ups that shows the axle link and shock mounting pretty well.

http://i42.photobucket.com/albums/e3...s/DSCF5605.jpg

lincpimp · 01.18.2010, 10:52 AM

Thanks for the pic Nick. I figured that is how you did it, as it is similar to what I did when I had a x factor.

What materials did you use for the links? And the ball ends you are using now look pretty beefy, where did you find those? I know dubro has a pretty wide selection, and I think rpm makes some as well...

NickRummy · 01.18.2010, 11:04 AM

Rod ends are from Junfac. I believe i just used 10-32 threaded rod for the links. Made it nice for mocked up so if they were the wrong length (which they were) I could cut down the rod or make a new rod cheap. Then when they were right I sleeved them with some Delring. I think the delrin i found was from www.mcmaster.com and was 1/2" OD and around 3/16" or 1/4" ID.

They're been punished pretty good and I've never broke one yet!

lincpimp · 01.18.2010, 11:12 AM

Quote:

Originally Posted by NickRummy

Rod ends are from Junfac. I believe i just used 10-32 threaded rod for the links. Made it nice for mocked up so if they were the wrong length (which they were) I could cut down the rod or make a new rod cheap. Then when they were right I sleeved them with some Delring. I think the delrin i found was from www.mcmaster.com and was 1/2" OD and around 3/16" or 1/4" ID.

They're been punished pretty good and I've never broke one yet!

Thanks for that info. I will have to snag up some of those ends and some threaded rod.

Now I just need to find a txt chassis as I do not want to make everything... Any idea where I can find one? Ebay and rctech did not show up anything, and rccrawler did not have any that were not cut/modded...

NickRummy · 01.18.2010, 11:43 AM

Yeh the one extra one I have has been had the bottom cut off which is why I didn't use it.

I have one drawn in CAD if you want the template to cut your own out? No other ideas besides keeping an eye on RCC and Scale. RCMT might be a good place to look. A lot of people won't post those for sale since they aren't common. Might be better off to post a wanted add looking for a set.

suicideneil · 01.18.2010, 01:28 PM

I have a spare stock TXT-1 chassis, just missing the cross brace rods, though those are easy to fabricate from 6mm OD aluminium tubes, 102mm long.

Yours if you want it, just pay postage & a small 'handling' charge..

lincpimp · 01.18.2010, 02:17 PM

Quote:

Originally Posted by suicideneil

I have a spare stock TXT-1 chassis, just missing the cross brace rods, though those are easy to fabricate from 6mm OD aluminium tubes, 102mm long.

Yours if you want it, just pay postage & a small 'handling' charge..

You are such a sweetie Neil... Sent you a pm. I may make it wider or narrower, depending on the body mounting and tranny dimensions.

NickRummy · 01.18.2010, 02:48 PM

Quote:

Originally Posted by suicideneil

I have a spare stock TXT-1 chassis, just missing the cross brace rods, though those are easy to fabricate from 6mm OD aluminium tubes, 102mm long.

Yours if you want it, just pay postage & a small 'handling' charge..

You wouldn't happen to have a MMM you're not using would ya?

lincpimp · 01.18.2010, 03:54 PM

Quote:

Originally Posted by NickRummy

You wouldn't happen to have a MMM you're not using would ya?

Or a pretty blond chic...

lincpimp · 01.19.2010, 01:01 AM

Just to let you guys know, the "wanted" section on rccrawler is handy. I scored a set of plates from Neil here and also got another pair from a guy on rcc. Plus a few other guys hit me up with cut plates, might get them too if they are cheap enough. I have 4 big bodies that need chassis and not having to cut any will speed up the process!

As far as other ideas, what do you guys think about the big bore shocks from the flux? Good idea? Bad idea? Should I be shot? Maybe just beaten senseless?

NickRummy · 01.21.2010, 12:27 PM

Quote:

Originally Posted by lincpimp

Just to let you guys know, the "wanted" section on rccrawler is handy. I scored a set of plates from Neil here and also got another pair from a guy on rcc. Plus a few other guys hit me up with cut plates, might get them too if they are cheap enough. I have 4 big bodies that need chassis and not having to cut any will speed up the process!

As far as other ideas, what do you guys think about the big bore shocks from the flux? Good idea? Bad idea? Should I be shot? Maybe just beaten senseless?

I'd be curious about these as well. I'm in need of about 8-10 savage shocks myself. All the ones I own are plastic or integy and will either break once in use or they don't hold oil. My 1/6th chevy has integy savage shocks that won't hold oil and it's like a pogo stick.

lincpimp · 01.21.2010, 03:26 PM

I know that the integy shocks suck. If you feel like rebuilding the shocks get some team associated green slime to put on the o rings that the shaft rides on. Seems to cure any leaky shocks I have ever had issues with. Now I rebuild all of them with this stuff.

http://www3.towerhobbies.com/cgi-bin...&I=LXSF70&P=ML

I will have to look into the flux shocks and see how they fare on the flux. Maybe I will start a thread in the savvy section!