Search the Community
Showing results for tags 'wr01'.
Found 4 results
Something I've have in mind for an absolute age but only just got around to starting - my take on a pro-mod WT-01 monster truck. The story begins way back in my early return to RC, the best part of 15 years ago, when I added a second-hand Blackfoot Extreme to my small but growing collection. It came completely stock but was missing the original Tamiya hardbody and was wearing a pre-painted Cross Tiger shell instead. I ran it as it was for a while, but I'd always planned on some upgrades. I was new to the hop-up world and what followed was a mish-mash of unmatched parts that turned the original BFX into something overweight, overdamped and overpowered. Unable to get the 14.4v 550s to play nicely with the Ho Bao monster wheels and axle wideners, I broke it up for parts and sold most of it on, promising myself that one day I would make something better. For a long time other projects took priority, but in November I went to my long-ignored monster truck parts bin and pulled out all the bits I thought I'd need to build another WT-01. Unfortunately I had only a fraction of what I needed, and what I had was badly worn, cracked in places and broken in others, so I figured the cheapest option was to start from scratch with a whole new kit. I found an NIB Mud Blaster II on ebay for under book price, and ordered a JConcepts F250 racerback body, on the basis that this was designed for the Clod wheelbase (10.5") and might look a little neater than the short Brat body over the WT-01's long stride. I already had a spare transmission with full bearings and a cracked case, an NIP case in which to put it all, and some lightly used dogbones and drive parts, plus enough new bearings to refit the new rear transmission and all the corners. As a matter of fact even the F250 is too long for the WT-01. I briefly considered making some staggered suspension arms on the 3D printer to shorten the wheelbase, but a recent post from top builder @IBIFTKH persuaded me to take the plunge and make some custom chassis plates. So - what you see here - and this really is just a teaser of what's to come - is my own take on the WT-01 shorty. The chassis plates are made of 0.5mm plasticard as a prototype / proof of concept / overall size check. If asked I will say that I chose 0.5mm because it's easy to shape and can be cut with scissors as well as craft knife for a very quick build, but the truth is that I had lots of it lying around but I didn't have anything meatier. I took an old cracked chassis plate and cut off all the protruding parts on the back so I could draw around it and mark all the holes. I kept the body post mounts in the stock location because I'd already cut the holes in the body. Then I measured that I'd need to shorten the chassis by 12mm at each end. The rear was easy - I marked the stock transmission holes, then moved them all forwards by 12mm. The front end was a different matter. I hadn't noticed until @Saito2 mentioned in the Cars You Once Enjoyed thread that the front of a WT-01 has no kick-up. The WR-01 has around 8 degrees in the dummy front suspension mount, but Tamiya didn't bother to make an alternative transmission housing or an asymmetrical chassis plate, so the 4wd version has that compromised front suspension geometry. So, rather than just bringing the front holes back by 12mm, I measured back by 12mm at the second-forwardmost of the transmission mounts, then angled the entire transmission back by 8 degrees. As you'll see from the photos this doesn't actually cost and ground clearance - it makes the centre of the truck lower but no lower than the centre of the diff housing. It would be an issue if I was building a crawler, but this truck will spend the majority of its runtime rooster tailing on the gravel lanes on the Imber Range or tearing up the astro at Robin Hood Raceway, so that extra clearance isn't needed. So - here's some rough teaser shots of the new chassis plates and the body in place.
Misses is out, so Tooltime. Always dissatisfied how wobbly the servo is mounted in the WT01/WR01/WR02 chassis. The new DT03 and MF01x chassis however have these nice sturdy mounts. So down to the basement and hack away at the chassis some platicard and a bit of POM. To get this to fit You have to cut away one bit and for more stability add a spacer Which would come out a bit like this This is the first prototype, should be possible to have it printed at shapeway or maybe milled from alloy. Screws for the servo With some spacers makes the height variable Fitted into the chassis Leftside Rightside If I get to it I will make a sketch with some measurements.
This started life as a Blackfoot 3 kit, with the intention of making it 4WD and possibly 4WS. I built it as instructed and bought the extra gearbox/ shafts/ arms/ etc to make it 4WD I then bought a 2nd hand wild dagger? roller for the steering and extra gearboxes. anyway, not so much a build thread but thought some of you might be interested.......................... The gearbox and suspension assembly is held to chassis with 4 screws( well 3 so far in this case, lol ) each side, very easy to work on. I could drill straight through and bolt it but haven't yet. It's a bit rough, first attempt at this, still has sharpie marks where I was going to remove more metal, messed up the steering servo, cut the hole too big and had to add the extra plate, not finished it off yet. I have created a weak spot where I cut past the angle to clear the standard shock tower, maybe next time, just cut it off and work round it? I have some very rough sketches of a chassis idea that I had. I did say rough lol,.. I think another gearbox could be added very easily. Tools used. Cordless drill Round file half round file 3mm drill bit. 2.4m of aluminium angle. (enough of this left to do another, possibly an 8x8) Took it out for a spin today and it drives quite well. I'd say it's better than it was 4wd. Will try and get video soon.