Monster beetle uprights - update

[petercabrio]

i hane made a basic aluminium prototype of the monster beetle upright from some aluminium chaneel, check out my showroom

http://www.tamiyaclub.com/showroom_model.a...d=16903&id=2144

intensive testing and other updates to follow

peter

[Headcase]

Hi Peter.

They look great!

Definitely let us know how the testing goes!

Rick

[mymonsterbeetleisbroken]

how did you break the original uprights? ( i seen your pics of the beetle in action, so i got a fair idea[] )

where abouts did they break?

nice metal replacement btw[]

[petercabrio]

they split down the middle, so the bottom part fell off

the other on has cracked diagonally

with these beefed up, what will break next?

peter

[mymonsterbeetleisbroken]

strange way for them to break,

my ones broke where the shock mounts on, the stess on the plastic from the screw that holds the shock on caused it to crack,

i drilled out my new ones and fitted the shock on with a long bolt out of a grasshopper shock, far better way to do it than the screws tamiya says to use!

[petercabrio]

first phase of testing was a sucess[]

I set up my most savage ramp yet to test them, i have two pieces of mdf approx 500mm square, i set up four house bricks and put the first piece of mdf against it at 45 degrees to the ground and then the second at 15 degrees from the ground to the other piece.

This made a jump jet type launch pad.

The truck was run at increasinglyfaster speeds at the ramp until i went full speed, (mine has 20 turn motor and esc so quite fast) and we were jumping 2 metres in length and 1.5 metre in hieght.

No damage, either to the new arms or the rest of the truck[8D]

i also tried full speed over a piece of 75 x 75 wood and it just hopped over[][][]

problem solved

may do some more testing tommorrow[}]

peter

[mymonsterbeetleisbroken]

just dont strip your diff! (like i did again the other day[:I])

so yet again my monster beetle is broken[]

[petercabrio]

sounds like a monster king beetle is calling??

mine is making noises but still ok as standard one, drive shaft keep losing it though!!

peter

[petercabrio]

The new uprights are working well, they have had plenty of grief

Just made some shock tower restraints from aluminium tube flattened and drilled, bent into shape.

The bumper mounting bracket is also aluminium now.

http://www.tamiyaclub.com/showroom_model.a...d=17246&id=2144

drive shafts still letting the truck down, need some cheap thorp units

Peter

[gingerboy98]

So then, when are you going to start selling these, cos I want some!

[petercabrio]

gingerboy

my fabrication skills are not good enough to knock these out to sell on!!!

however you can make them yourself very easily, the hardest part was finding the right stock material to use.

B&Q sell an aluminium 'U' section channel for about £3.50 per metre. If you take the plastic suspension arm in to try it for fit you should be ok.

The rest is done with a small hacksaw and drill. The parts that the axle bolts into are just the flange of the channel cut down with the hacksaw and bent out.

There was a lot of guess work and very little measuring as the channel is not deep enough for a direct copy but if your truck is getting this much abuse you will not be worried about a few degrees of misalignment on the suspension.

the next ones i do i will take some sequence shots

if you want any help just ask

peter

[mymonsterbeetleisbroken]

hay peter beetle, could you do some work on home made mb diffs next[] lol.

i have given up redesigning my locked diff, and now that the bolt i used to lock it has rapidly worn away the diffs outer plastic parts that hold the bearings[] i have given up on my mb all together[V]

[petercabrio]

MMBIB

funny you shouldask, i have been developing a unique drive system to remove all of the inherent design problems with the monster beetle, blackfoot gearbox design.

The new drive train utilises the 540 motor in a unique and flexible mounting arrangement with a flexible drive belt.

the testing didn't go to well as the motor mount wasn't strong enough

any suggestions would be appriciated

http://www.tamiyaclub.com/showroom_model.a...d=17277&id=2144

peter

[Stefan(2)]

i surpose with a ta03s belt tentioner it should work better []

[petercabrio]

think i have sorted it now

http://www.tamiyaclub.com/getuserimage.asp...004230856_2.jpg

(the wheels are going to be changed)

[mymonsterbeetleisbroken]

i love the rubber band idea[] the king monster beetle looks good aswell[8D]

[Cul-Tech]

If I made a locked diff out of delrin would any of you be interested?

Just curious if it would be worth my time, my beetle is parked on the shelf for the same reason.[V]

Mike.

[petercabrio]

have you cast it or machined it?

i think my monster beetlewill become a shelf queen and the king MB will be the runner so gearbox shouldn't be a problem

[Cul-Tech]

I haven't made any yet, I was just curious if it would be acceptable not having a diff. I would machine it, and I would probably make it out of aluminum.

It would be worth the time if I knew it would get some bugs of the shelves onto the streets.

Mike.[8D]

[mymonsterbeetleisbroken]

i would be interested. i need new gearbox sides and the plastic parts that house the bearings first though[]

i keep looking on the bay for an auction just for a mb gearbox - but they are aleays mixed in with loads of parts.

[Cul-Tech]

Maybe I'll give it a go.[]

I have a few other projects going now but when I am done I'll see if I can make something to work.

I will let you fellas know of any progress.

Mike.[8D]

[mymonsterbeetleisbroken]

[]