Steamer

[steamer]

It's sitting on my kitchen table as of five minutes ago. Just looking at it trying to remember where I left off. Been putting off building the two stage dump cylinders but now have no excuses left, so I guess it's time. There different as the oil is fed through the rod and not the cylinder so that going to take some thought

It's been painted so I'll get some shots up. Someone else wanted to know about the wheels and rims, so I'll do that too.
Thanks for the comments on the Aeromax.
Rob

[RCLogger]

Rob. The aeroMax looks very good. Well a little to good, I can't wait to get it dirty and smash the box up. Lol.
P.S. Those mud flaps are not going to look that clean for to long

Greg

[chaseracer]

the is a sweet looking areomax Rob.. and the transfer dump looks awesome. great combo

[steamer]

Thanks for the comments on the Aeromax, I'm just glad it's finished. Here's some shot of the mammoth with a splash of paint.



Just finishing the hand rails and then on to the dump cylinders.
Thanks for looking Rob

[RCP57]

Lookin good Rob!

[RCLogger]

Looks like the Mammoth will be ready to move some mud this weekend ? OR WATER

A weather man said today the rain will stop sometime in MAY ! GREAT.....

greg

[steamer]

Just an update of the wheel system. I turned the rims from delron and on the back made it one rim with a two tire bead.

To hold the wheels on I embedded 3/16" rod into the hubs with epoxy to drive the rims.

picture of rim from front and rear.


A couple of shot with the painted and installed rims.


Ive also started on the cylinders and here's the first results.

When I get a little further along with the cylinders I'll post some more pictures.
Thanks for looking.
Rob

[RCP57]

Hey Rob lookin good! Lou and I just spent the afternoon talkin trash about you...HAHA not really but he did say that you were making progress and obviously you are!

Reg

[flexintex]

Originally Posted by steamer

Just an update of the wheel system. I turned the rims from delron and on the back made it one rim with a two tire bead.

To hold the wheels on I embedded 3/16" rod into the hubs with epoxy to drive the rims.

picture of rim from front and rear.

Rob!! I am trying to dually the rear just like you. looking at options. I am now considering getting new rear rims 3d printed. Do you have the specs of the super wide rim you made? or was there a file you used? I'm assuming you turned them manually, but not sure. Any help with measurements would be great!

[tracksntreadslou]

Looking very good rob..that brute will be able to haul twice as much as Regs Uclit lol ..Hey I hope you can forgive me about the trash talking..

[RCP57]

What? That's it...I'm building a 797 in 1/10 scale! Haha

[steamer]

Wow Reg that things going to be huge. You will almost be able to sit in and drive it. Been working building the two stage cylinders and they now are finished. Still haven't tried them yet but I think I have all the bugs worked out. Will try to get pictures up tomorrow.
Rob

[Espeefan]

Nice work on the Mammoth, Rob. The new rims are nice. The Aeromax looks like a really nice truck too. The dump trailer fits it well.

[Dairyland Trucker]

The dump looks better with the new planitary hubs and painted, the dump trailer is awesome as well love it looks like what we have used a Clements bridger trailer...

[steamer]

Well here's the latest on the cylinders. First picture has one cylinder in pieces and one together. First big problem I had was I was trying to hold too close a tolerance on the rod guide bushing and this caused them to bind up.

So I took everything apart and polished the piston rods down another 2 thou and they seemed to work better but still hung up coming back down. Should say these are single acting so are supposed to fall when the pumps are reversed and remove the oil.

What I think is happening is the oil is creating suction when the pistons bottom out in the bores as there's no way for the trapped air and oil to escape.

So I think the next job will be to drill an #80 drill out through the end of the first stage guide bushing and the end of the second stage guide rod. It's a long shot and I'm hoping that it will break the vacuum to stop the hangups.

One thing I must say is that there is no lack of lift with those small wedico pumps. With the large bore of 3/4" and the small one at 3/8" it will lift a 11 kilo bag of lead up like crazy. Even tried the bag out on the rock lid and it didn't change at all. From box down to full up about 10 seconds.
Thanks for looking
Rob

[RCP57]

Lookin real good Rob!

[Lil Giants]

That looks awesome Rob, I'm sure it works super slick!

What's your closed vs open lengths?

Pics of them installed open & closed would be a treat!

Is there a procedure you do to bleed the cyl when 1st oil is pumped?

The rule of thumb I have always done with the wdc & Leimbach telescopes to remove all the air was to turn the cyl upside down, so the entry of oil is at the top. Then extend the cyl with pumped oil, keeping some resistance pressure by holding base in my hand - other end against my knee till its fully extended. Relax, wait a few minutes for air bubbles to rise to entry/exit fitting. Then with some force by my own hand 1st & then activating pump to reverse oil flow with constant hand force too till cyl is fully retracted. Repeat process 2 more times to ensure every last air bubble is out of the system and hopefully telescope works smoothly.

[RCLogger]

Nice work Rob. Thanks for the photos

[steamer]

Here's a picture and a couple of Video from the Trains show yesterday in Campbell River
Good comparison of the 966 and 980 side by side.

Vid

Vid

Vid


More to come after todays show.
Thanks for looking
Rob

[Lil Giants]

More to come after todays show.
Thanks for looking
Rob

It's great to see what you posted thus far Rob.. I was waiting to comment after you posted the rest of the eventful wkend.