Solid axle, OBR twin build

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flat fender kinda jeep look on top:cool: raked back windshield, loads of bracing...running out of tubing but should have enough to finish it...just

suspension articulation is more than any shock travel can give me one wheel down other about 6.5" up...no binding...got some rovan vvc 5b rear shocks on order..they give 70mm stroke...mounted in a couple of inches from the axle tube flanges should give me heaps of articulation...trying to keep this scale as possible so big travel isn't necessary but plenty there if needed

more progress

rear driveshaft, brakes and servo mounted

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front tie rod

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the brakes were a bugger and took bleedin ages. fiddley arsed job..they work good though and should be able to supply enough stopping power with the 5755/digi4 ...hoping to rig up a th cable off the same servo...pipes should be here tomorrow so can start on the top half
 
on the downhill stretch now...

pipes were really easy one just had to cut 3/4" off a toxyc vrc manifold and other one cut a twist and weld both are the same length now too, remounted the spring tabs where they needed to go and sorted...rear mounts will come when i get to rear of cage

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air filters interfered with each other so a angled shredtack and a bit of trimming the lock ring, fit nicely

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started on front end, top tube tacked on

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hope to get front end done and shocks mounted tomorrow and get started on the rear...
 
yep, it is getting a bit lardyback...i picked it up yesterday to get an idea...my target weight (sound like bleedin weightwatchers) is to be under what my old rampiggie weighed, with the cage it was 44lbs wet, ...not sure where it is at the moment but can't have too far to get there(if i have time today i'll run down and weigh it so far)...fortunately there isn't much left to go on other than about another kg of tubing...and same again for batts and tone servo, some for shocks...so may be 3kg more to come....so it'll be close
 
yep, there will be plenty. i'll be welding in a gopro mount too for the drivers eye view...

front shocks mounted and figured the spider web of bracing required that'll still leave room to get the pipes off, clear link arms and driveshaft and fit in a tone servo and linkage just in case plan A steering setup don't work ...took a while to figure so it wouldn't look goofy, few more bits to add and the front end will be super strong

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i'll get the front finished tomorrow then just the top and back to do...had to order a bit more steel, hope to have it by weeks end so i can get it done, stripped down and painted...obr top ends arrived today so will throw those on when the motor comes out for final welding...

so this (have to figure a name for this rig) works out to be about 1/4 scale, 25.75" wheelbase x 4 = 103"..once it's finished i'll weigh it and figure the hp per tonne to see how it compares to 1:1...i should be close to 750hp/t which is close to 1:1 on the bottle
 
scab a lathe from someone and off you go;) that was the key to this build..that, a welder (of course) a hand grinder and basic hand tools, and some spare time...i've about 120hrs into this so far,...it helps to have built full size rigs in the past and have some mechanical know how, granted, but i really believe anyone who's been into rc's for a while could tackle a build like this. the whole idea of posting step by step is just to share ideas on how to go about it and hopefully it'll inspire others to give it a go...i have to thank roofchopper/stiggwelder for inspiring me to start building my own ..i had just been doing cages up until he started posting his builds up,
and one certain hill nothing can get up...first foff jeep gets it's nose over the top but can't get over the lip...with 120hrs and about $2800 build cost this had better make it up there:rolleyes: don't fancy building another one for a while after this one's finished
 
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so been working on the steering cylinders and having the same issues i had with an attempt i did on a full size lifted 97chevy 3/4 ton PU a few yrs ago, i'd cut out the ifs and 4 linked an f350 dana 60 up front with coils...have pics of it somewhere i'll dig out... wanted ram steering for several reasons but it didn't work then either cos bleedin the cylinders is a bugger and rod displacement is an issue, ..think i've figured it out now using 2 one way slaves but need to order 2 more cylinders...
plan b that hopefully will get me by until i figure hydraulics is using cables, easy to install and remove later

more chassis work

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got the rear part of cab bent up and now i am out of steel tube, more should be here Monday..a bit more bracing up front and a removable cross piece for the top of the hood and finish the rear off...hope to get the rear shocks mounted...i'll get a size comparison pics once they're in...it dwarfs all my other rigs....as i said before weight might get a bit higher than i wanted but now not so sure...be interested to seeing the kg's when it's done

plan b steering, with the tonegawa i'm not worried about having the power for this to work, my concern is snapping a cable when it cartwheels down a steep hill , so this is just temporary...unless it works and holds up then it'll stay...coated braided mountain bike gear change cable with non kink lined housing, supposed to be pretty tough but we shall see

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bit of spare time today so got the steering servo mounted, cables all done, pipe mounts done

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got some of the rear frame done, tank positioned and now working on the rear shock mounts..then will finish the bracing

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picked up some .025 galvanized sheet and aluminum sheet ready for some body work

tried the steering on 6v and turns the wheels on the bench no problem, bit slow but a 10000mah 2s 7.4v lipo will fix that :) they peak at 8.4 so will be perfect for the tonegawa's power source
 
dam dude your almost there that sucker is sweet. i was wondering what your thoughts are on the evolution 152 cc boxer twin air plane engine are thanks for the input
doug
 
i looked into all sorts of motors...problem with plane engines is they rev too low...i'd really like to see the honda gx35 four stroke twinned, i look forward to the 4 stroke revolution that will soon come, blowers/ turbos etc...

end of this build is getting ever nearer....shocks mounted, rear bracing finished. just have to finish the front bracing and weld on some body mount tabs then i can tear it down, brace the axles and start painting...need a regular servo for th...had several laying around but they're hiding pretty good right now so will have to pull one from something else to fab the mount

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i'll have to start on the tires pretty quick...
 
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