Solid axle, OBR twin build

[doug banner]

great looking work.if u don't mind me asking where did u get the ring and pinion.

thanks doug

 

[mooman007uk]

hsp rampage/blackout centre spools and pinions..proved to be pretty much indestructible

been busy making the axle shafts, finished the rear axlea and made up front ones, FLM kaylee cvds one cut short and other i machined an extension from a piece of 4140 and welded it all together on the lathe to keep everything true..end pieces are 8mm hex that fits snug over the spool shaft...no pins to break




had to do a bit of machining to get hub pivot and cvd pins aligned



bit of machining to get the clutch case to fit, carrier is a vertigo prot for nutechs, had to make the stand offs...using fg clutch bell and 14t pinion



bent up the bottom of the chassis rail and mocked it up...next will be engine mounts then start to build off the engine rail




i'll add some axle bracing once all the brackets and steering set up is done. sucker is going to be pretty big

 

[maddmike]

That is going to be huge! Put the rampage mt to shame

 

[doug banner]

awsume project and the workmanship is top notch.where did u get the engine and howmany $$$ ? cant wait to see this baby in action keep it up its great

doug

 

[mooman007uk]

had to get the motor from ddm $699.. then order top ends, cooling head and carbs from obr, they haven't had twins for a while...it's cost me probably $300 more this way but i couldn't wait any longer...
anyone need complete rcmk 57cc top ends?

 

[voo2doo]

Very nice Moo...looking forward to the rest of it.
J

 

[doug banner]

was that 3000 for the carbs head cylinders


thanks doug

 

[doug banner]

was that $3000 OR $300 FOR the extras sure would make a great engine for 1/5 scale dragster


thanks again doug

 

[mooman007uk]

oops..typo...$300 more than buying the whole motor from obr
shipping and Canada taxes are what puts it up there as well.

busy yesterday, got the chassis floor figured out..just trying to scab together the gears and drive train before i go nuts with the tubing

 

[doug banner]

do u have any info as to the rmp u can expect out of that twin.i see they say 14 hp thats killer thinking about putting one in a 1/5 sc.top fuel car im working on.thanks for all the help you have been to me.


doug

 

[mooman007uk]

rcmk claim 14hp...the obr full mod top ends i have coming make a tad more but have a lot more torque apparently...someone who has both likened it to a healthy mouse motor compared to a rat motor(350 chev SB to 454BB)
i'm going to run vrc propipes too to max my hp and torque

got the floor pan outline done, spent hrs machining bits to get my gear cluster to work, then spent another few hrs altering the lawnmower shafts and figuring an angled jack shaft only to find that once shortened i didn't have enough angle at the cvd's for wheel travel i'm looking for...bugger...stared at it some, moved the engine/chassis forward an inch and now can go from gear cluster to diff direct with no jackshaft...will clear the motor by just a couple of mm when articulating so just a bit of manipulation and front is done

first i machined down an old stripped hurrax fr hub i had laying around





now i can use a hurrax cvd to mount my gears...the shaft was too short so machined down all parts to gain 7mm

machined 2mm off a himoto 30t gear



4mm off the square




also machined 1mm or so off the cvd where it meets the bearing so it would sit thru 1mm more..and voila hub and gear cluster attached to a hurrax cvd ready for the spline slider and other cvd end welding together



next was to make mounts for the hub, steel welded to the frame on the bottom and aluminum on top bolted to the clutch carrier



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hopefully more progress tomorrow...once my rear driveshaft gear and shaft is done the chassis will take no time

 

[doug banner]

looks great you have been busy keep it up good luck

doug

 

[mooman007uk]

got the rear drive shaft made up and mounted...ended up welding the gear on a shaft that is welded to a rampage brake nut (where my brake will be), left the shaft long until i figure my drive shaft set up







now that's done i started on the chassis, hope to get enough done to mount the 4 links in the next day...decided to use vvc rear shocks all round, they'll give enough travel mounted in the right place

 

[doug banner]

you've done this before i believe hope it's as fast as your build sure is cool

doug

 

[mooman007uk]

i've fabbed a few things in the past...and this should top out around 40mph but will get there in an instant...should throw some decent roosters

got the front driveshaft done





cut and turned down a hurrax cvd and cut the end off a rampage drive cup...just need to weld it all up now



with that done moved on to the front four link...takes bleedin ages making all the brackets and then fitting them...much grinding and filing later









just the front bottom brackets to do and then can start on the back. mocked up a vrc 5b propipe with toxyc manifold..got another one coming...will fit perfect stacked on top each other...pics give you and idea...will run 2 hpi filters straight off the carbs.. that'll leave room out back for the tank and passenger side will be th, brake and steering servos, batt etc





have to stay 4 steps ahead all the time so half the day is figuring stuff and half making it, once the rear links are done it'll be plain sailing

 

[charlieboy]

This thing is lookin awesome mate keep the updates comin can't wait to see this churnin up dunes


If it ain't broke, bash it till it is

 

[mooman007uk]

getting toward the end of the time consuming stuff now.

had to modify the front upper link arms...despite all my measuring and checking for square i missed the step of checking the bleeding steering lock with the wheels on 2 hrs later





rear 4 link done






starting to take shape now








got the brakes just about figured...will go hydro down the road but some modified rampage brakes will work for now...rear driveshaft will complete the drivetrain...whoohoo

other pipe should be here monday then i can finish off the frame, tear it down and paint it...if my head kits come by friday i could have it running by the end of the weekend..possibly

 

[charlieboy]

Simply awesome mate!!!!!!


If it ain't broke, bash it till it is

 

[atom3624]

Quite a beast is taking shape!!

It'll be interesting to see the final articulation of the suspension.
It'll also be interesting to see what will top the chassis!!

Al.

 

[renbar]

great project another top builder love it