My e-revo brushless edition build - RC-Monster Forums

mistercrash · 06:10 PM

The third lipo I have splitting those 2 3S lipos will be for sale, probably to someone in Canada since I don't know if I can ship it outside of the country.

mistercrash · **Servo blocks -** 06.08.2009, 04:05 PM

It was an exciting race weekend, not as many MT racers showed up due to the threatening weather but the rain stayed in the clouds and the racing kept on going. The ERBE was running fantastic, I TQed and ran the fastest lap but a steering servo failure kept me from taking the win in the main so I got second place.
Three things failed on the truck this weekend, the servo stripped gears, when I took it out to know the extend of the damage, I noticed that one of the ''ears'' was broken.

And finally, the rear body mount brace I made with a carbon fiber rod broke. I was jumping the triple in the back stretch and while the truck is just leaving the jump, I notice a marshall in the middle of the path of my ERBE so my reflex was to apply the brakes.... in mid air

I landed very badly with the back of the truck hitting the ground first. That is when I broke the brace.

This goes to show that a brace is needed to keep the rear body mount from flexing too much when running a rear wing. Without the brace, it might have been the body mount or even the chassis breaking. I made a new one using a spare steel P2 pushrod.

This is what I made for my steering servo after I replaced the gears and put a new upper case on it.

These little blocks spread the tension of the screws and nuts I use evenly and keeps the servo case from breaking.

jpoprock · 08.11.2009, 05:23 PM

Quote:

Originally Posted by mistercrash

And finally, the rear body mount brace I made with a carbon fiber rod broke. I was jumping the triple in the back stretch and while the truck is just leaving the jump, I notice a marshall in the middle of the path of my ERBE so my reflex was to apply the brakes.... in mid air

I landed very badly with the back of the truck hitting the ground first. That is when I broke the brace.

This goes to show that a brace is needed to keep the rear body mount from flexing too much when running a rear wing. Without the brace, it might have been the body mount or even the chassis breaking. I made a new one using a spare steel P2 pushrod.

So... do we know yet what LENGTH the rod needs to be in order to fit from the shock mount to the wing? I have a ton of these, and they are either too long or too short. A proper measurement would help, cuz I would like to get some to try!

However, if you do take a hard landing on the wing, doesn't that then just cause more stress and pressure on the shock mount, possibly causing it to rip itself from the chassis? Or bust a bulkhead?? I'd rather lose a wingmount then to destroy either of those!

shaunjohnson · 08.11.2009, 05:33 PM

look at the revo design....you are not going to rip out the shock mount!!
even with that brace in place the weak link might still be the brace or the wing mount but i highly doubt it's gonna take out the shock mount.
he said it's a P2 rocker pushrod if that's any help.

shaun

mistercrash · 12:07 AM

Quote:

Originally Posted by jpoprock

So... do we know yet what LENGTH the rod needs to be in order to fit from the shock mount to the wing? I have a ton of these, and they are either too long or too short. A proper measurement would help, cuz I would like to get some to try!

You sound mad for some reason.

The LENGTH of the rod will change depending on how you fabricate the part that goes on top of the shock tower to secure the rod to. I didn't measure anything when I made this thing. I made the CF part that goes on the shock tower and used that same shock tower as a template to make the holes. Once it was installed, it was just a matter of filling the gap between that part I made and the body mount. I used an old style P2 pushrod that was all aluminum and put a few more threads at each end and cut the excess to make it fit.

Quote:

Originally Posted by jpoprock

However, if you do take a hard landing on the wing, doesn't that then just cause more stress and pressure on the shock mount, possibly causing it to rip itself from the chassis? Or bust a bulkhead?? I'd rather lose a wingmount then to destroy either of those!

The rod ads strength and rigidity to the body mount but the rod is still the weak point. Either the rod will bend (or crack in the case of the CF one) or the ball ends will be pulled out. I have seen aluminum chassis' that were bent upwards and those bulkheads ruined because the M4 screws were pulled out of them when the chassis bent. That rod is a mod that was brought to fix that problem, it has proven to work very well ever since rear wings were introduced to the Revo.

shaunjohnson · 08.12.2009, 03:38 AM

Quote:

Originally Posted by mistercrash

I have seen aluminum chassis' that were bent upwards and those bulkheads ruined because the M4 screws were pulled out of them when the chassis bent.

been there done that, did your threaded insert mod and i'll never go back

one of the best mods for revo ever those threaded inserts!!

jpoprock · 09.24.2009, 11:33 AM

Quote:

Originally Posted by shaunjohnson

been there done that, did your threaded insert mod and i'll never go back

one of the best mods for revo ever those threaded inserts!!

Hey Shaun/MistaCrash...

I've looked thru this thread (which is a LOT of lookin!), and I can't seem to find this mod that you're talking about. I was hoping you could direct me to the post that talks about it?

I like some of the ideas shown on how to strengthen up the rear wing area. I like the one where the shafts mount to the back of the truck, then up to the wing itself. I'm going to get a hold of some P2 rods with hopes to brace my wing up.

Question though.. will I have to fab up a mount for it on the shock mount? My Tekin stabilizer kit has a small screw in the center, but I'm not sure it's adequate to hold. I have some CF that I can cut up and make a mount. I just don't remember if I have a countersink bit. I think I do.

Also, has it been decided as to which "dirt flap" is the best design? Is it the one where you used Gorilla tape, or is it the one where you cut a single piece of rubber? I'm sure both are great!

So, do I still sound mad? LOL! I hope not.

I never intend to come off that way ever! And if I do choose to be mad, you'll know it.

mistercrash · 09.24.2009, 10:56 PM

Quote:

Originally Posted by jpoprock

Hey Shaun/MistaCrash...

I've looked thru this thread (which is a LOT of lookin!), and I can't seem to find this mod that you're talking about. I was hoping you could direct me to the post that talks about it?

I like some of the ideas shown on how to strengthen up the rear wing area. I like the one where the shafts mount to the back of the truck, then up to the wing itself. I'm going to get a hold of some P2 rods with hopes to brace my wing up.

Question though.. will I have to fab up a mount for it on the shock mount? My Tekin stabilizer kit has a small screw in the center, but I'm not sure it's adequate to hold. I have some CF that I can cut up and make a mount. I just don't remember if I have a countersink bit. I think I do.

Also, has it been decided as to which "dirt flap" is the best design? Is it the one where you used Gorilla tape, or is it the one where you cut a single piece of rubber? I'm sure both are great!

So, do I still sound mad? LOL! I hope not.

I never intend to come off that way ever! And if I do choose to be mad, you'll know it.

If you're asking about the no slop Ofna hexes it starts at post #7. For the rear wing I would say yes you would have to make a mount to go on the rear shock tower. The Gorilla tape dirt flaps work good but they are a little soft, the stiff rubber ones were better. No you don't sound mad at all.