Hell horn. Posted November 2, 2020 Share Posted November 2, 2020 Looking ace dude. Now I want to build one like that 1 Quote Link to comment Share on other sites More sharing options...
stimpy Posted November 2, 2020 Author Share Posted November 2, 2020 15 minutes ago, Hell horn. said: Looking ace dude. Now I want to build one like that Haha.. Get yer Bully sorted first and driven!! Then sell a kidney and build one 👍🤣 1 Quote Link to comment Share on other sites More sharing options...
Hell horn. Posted November 2, 2020 Share Posted November 2, 2020 My kidneys are worth about £0 unfortunately. Have to keep working on making some money. 1 Quote Link to comment Share on other sites More sharing options...
Hell horn. Posted April 11, 2021 Share Posted April 11, 2021 Bit of an update for this chat. My own designed chassis is growing closer and closer to being right. Need a slight change of rear link mount to help with suck down. And redesign the shock mounts at the rear to then. Also need to sand the chassis down a little bit more to get it looking better. But chucky in places still. Lots of little bits to adjust still Quote Link to comment Share on other sites More sharing options...
stimpy Posted April 11, 2021 Author Share Posted April 11, 2021 Looking good buddy! Keep on it 👍 1 Quote Link to comment Share on other sites More sharing options...
Popular Post aPpYe Posted June 26, 2021 Popular Post Share Posted June 26, 2021 Here you go ... I don't have any pics of it on the rocks as of yet, but here it is. Except for 4WS, the mechanical stuff is all stock. I did wrap balloons around the shocks and installed some knuckle weights. Electronics are labeled in the wiring diagram. I am pretty new to the hobby so I started with budget electronics and will upgrade if anything feels lacking. So far everything feels outstanding! I don't know that expensive electronics will make much difference at this point. It is a real beast! I control it with dual sticks, throttling and steering each axle individually, front with the left stick and rear with the right stick, negating any need for a dig. Everything works fine without an external BEC. The ESC's are each rated for 7.4v, 3A, and the servos stall at 7.4v, 2.4A if I remember right. When these motors eventually wear out, I will get slower, torquier ones, as it is WAY too fast on 3s. Even 2s is a bit much for this crawler. I am able to adjust curves with my transmitter though. STARSCREAM'S BATTLE FORTRESS! My 4 year old had a $50 gift certificate and she got me this. I finally found a use for him! 7 Quote Link to comment Share on other sites More sharing options...
Hell horn. Posted June 26, 2021 Share Posted June 26, 2021 I'd look at the upgraded front axles. The stock ones are crap. The upgraded ones are so much better. Apart from that. A fantastic little car. Quote Link to comment Share on other sites More sharing options...
stimpy Posted June 27, 2021 Author Share Posted June 27, 2021 22 hours ago, Hell horn. said: I'd look at the upgraded front axles. The stock ones are crap. The upgraded ones are so much better. Apart from that. A fantastic little car. I think you mean axle shafts perhaps man!... This is with respect to the standard CVDs the kit comes with - some have had a lot of play in, some apparently have not... Quote Link to comment Share on other sites More sharing options...
stimpy Posted June 27, 2021 Author Share Posted June 27, 2021 @aPpYe Good looking rig. I also have a Bully2, albeit I run the body with my XR10 axles currently.... What turn motors do you have currently? You may be able to use a smaller pinion to bring the speed down. Only point of note is your rear lower links want to be the other way round ideally - so they start with a long rod and curve from the skid.... ( But you may prefer this as is perhaps...) Quote Link to comment Share on other sites More sharing options...
aPpYe Posted June 29, 2021 Share Posted June 29, 2021 I had thought the Bully II axles were much improved upon the originals? Or is it the CVD thing as Stimpy suggested? Yeah, I know about the rear links. I kept bending them and reinstalling them, just a little at a time to get the motor clearance I was after, then I installed them backwards the last time I guess! I keep meaning to get around to it, but I have a couple of stripped bolt heads. Cheap tools and cheap screws I guess. Time to grab the rotary tool ... Quote Link to comment Share on other sites More sharing options...
aPpYe Posted June 29, 2021 Share Posted June 29, 2021 Oh yeah. 16t crawlmaster sport motors. I should have gone for the 20t I guess. Once I dialed in my control stick's d/r curves, I have all the control I want really. s Quote Link to comment Share on other sites More sharing options...
Hell horn. Posted June 29, 2021 Share Posted June 29, 2021 Yes it's the joints in the front axle shafts. I had 3 sets of them that had massive amounts of play in them. A lot of people in the groups also had issues with them. If yours has no crazy amounts of play in them your all good. But it's worth upgrading them anyway. The upgraded ones are a vast improvement. Apart from that. It's a brilliant car. Did you get the new tyres and foam with it? Now comes with 2 stage foam in them Quote Link to comment Share on other sites More sharing options...
stimpy Posted July 3, 2021 Author Share Posted July 3, 2021 On 29/06/2021 at 20:47, aPpYe said: Oh yeah. 16t crawlmaster sport motors. I should have gone for the 20t I guess. Once I dialed in my control stick's d/r curves, I have all the control I want really. s I run 16t on most of my crawlers. 👍 Quote Link to comment Share on other sites More sharing options...
aPpYe Posted July 11, 2021 Share Posted July 11, 2021 All is good with this car. I swapped the links around. I had R&R'd them so many times trying to get the right amount of clearance (they wanted to touch one of the contacts on the motor) and I ended up putting them on backwards. Derp. I am happy with the 16t, totally. When these burn out I'll go for a 20t just for more low end control, but I probably won't notice the difference. On 3s, this thing tops out at maybe 15mph? 12? Faster than I can run most likely. On 2s, it is a bit more sane. I still can't decide which one I like better. The 3s is 75c, and the 2s is 40c ... Are the U Joints just tighter? More durable? I have not had any issues with the axles it came with. I'm trying to imagine a situation where play in the axle matters ... I don't remember what foam I got. Quote Link to comment Share on other sites More sharing options...
Popular Post Thunderdonkey Posted August 28, 2021 Popular Post Share Posted August 28, 2021 Here is my home-brewed torsion-chassis Kri-Kri. It uses Bully II axles and Etronix 27t motors. There is an extra 250g of lead in each of the Axial front wheels, which have Bully tyres for rock climbing. The rear tyres are GMade Bighorn to give more grip in loose terrain. The Kri-Kri thrives on really rough ground and the loose sharp-edged rocks that we get in old quarries around here. The high-clearance chassis makes it easy to get up steps and over big rocks. It even manages long grass and rushes without trouble. Top speed is 10 kph on 2S, and 15 kph on 3S. I tried the two-stick setup that aPpYe uses, but I found it too complicated in practice. I use an FrSky Taranis X9Lite, with throttle on the left and steering on the right. The left shoulder switch selects 2-wheel or 4-wheel steering. The right shoulder switch selects 1-stick or 2-stick 4-wheel steering. Switch A up or down selects forward or reverse bias for climbs or descents to ensure the car stops with the stick neutral. Switch B up on all my cars is the Kill switch and the Tx will only turn on with this in Kill position. Centre position is unlimited power. Down engages the rotary knob for for power limit from 20 to 60 %. Switch C up or down selects Dig or rear freewheel. With Dig on and 4-wheel steering Kr-Kri can almost turn in its own length! 4 Quote Link to comment Share on other sites More sharing options...
Hell horn. Posted August 28, 2021 Share Posted August 28, 2021 That looks fantastic. Any videos of it in use? I'd love to see it rock Quote Link to comment Share on other sites More sharing options...
stimpy Posted August 30, 2021 Author Share Posted August 30, 2021 Hehe, what an interesting looking beast! Quote Link to comment Share on other sites More sharing options...
Popular Post Ross9999992 Posted October 14, 2021 Popular Post Share Posted October 14, 2021 (edited) Do I get to sneak this in here as an “or moa rig”? Put it back together today with the stock esc/rx because I wanted to play but will have independent front and rear drive when eventually sell my 3ch sticks and get something more aircrafty. I was gonna use my drone tx but I cba with unsprung throttle 🙂 Started life as a rocksta but chopped at it a bit, made some custom/extended links and magicked up some axle extenders to fit the dodgy wheels. Turnigy 9025mg servos fitted and I have 2 sets of metal gears still in packets in my cave (because the stock plastics are still going fine) 👍🏻 Currently looking for a ftx ravine to do a similar job on…far too poor for a proper comp crawler type thing 😂 Edited October 14, 2021 by Ross9999992 4 Quote Link to comment Share on other sites More sharing options...
stimpy Posted October 14, 2021 Author Share Posted October 14, 2021 Brilliant Ross! Half the fun is in building and if it's fun to drive too then great 👍 1 Quote Link to comment Share on other sites More sharing options...
Ross9999992 Posted October 14, 2021 Share Posted October 14, 2021 Cheers Stimp 👍🏻 Made a little course around the living room yesterday with the youngest, was great fun. Deffo more capable than it was out of the box. Easily climbing over the ol’ 2L drinks bottle and scaling the famed bits of wood up to the sofa obstacles 😂 Cog is so very low, driving up a wall the rears are almost touching before it flips. Need to do a job on the wheels though. Those tires are quite hard and the wheels are light. Managed to climb probably 45 deg ply but over that it just slips back down. The lightest finger poke on the front end had it easily climbing the same ply at like 70 deg so I guess a load of weight in the front will do a similar job? 🙂 Quote Link to comment Share on other sites More sharing options...
stimpy Posted October 14, 2021 Author Share Posted October 14, 2021 4 hours ago, Ross9999992 said: Cheers Stimp 👍🏻 Made a little course around the living room yesterday with the youngest, was great fun. Deffo more capable than it was out of the box. Easily climbing over the ol’ 2L drinks bottle and scaling the famed bits of wood up to the sofa obstacles 😂 Cog is so very low, driving up a wall the rears are almost touching before it flips. Need to do a job on the wheels though. Those tires are quite hard and the wheels are light. Managed to climb probably 45 deg ply but over that it just slips back down. The lightest finger poke on the front end had it easily climbing the same ply at like 70 deg so I guess a load of weight in the front will do a similar job? 🙂 Hard tyres will play a large part in your issue. Some weight over the front axle can help, generally we are looking for a 60/40 weight bias without going too wild!... Hard to tell from the pic re links but what you want is when the front end unloads is for the front axle to rotate forward - this can be done by altering link lengths - which will then give more bite to the front 👍 Quote Link to comment Share on other sites More sharing options...
stimpy Posted October 14, 2021 Author Share Posted October 14, 2021 (edited) Forgot to post , but managed a day up at black rocks with MRCC and some other chaps the other month... Had a brilliant day there as usual though the rocks were not so grippy as it was cold so mostly ran the Scale LCG rig instead of the MOA. The last time I was here I was running the Y Town chassis which I love , but this bully chassis offers better rear link positions so that in part accounted for greater success 👍 Edited October 14, 2021 by stimpy 2 Quote Link to comment Share on other sites More sharing options...
Ross9999992 Posted October 14, 2021 Share Posted October 14, 2021 (edited) 1 hour ago, stimpy said: Hard tyres will play a large part in your issue. Yeah for sure, I was going to do the old soaking in wd40 but I watched a video where that actually enlarged the tires which is clearly not what I’m after…gonna brush them over (to avoid the beads) once I’ve given them a chopping though to see if that helps. 1 hour ago, stimpy said: Hard to tell from the pic re links but what you want is when the front end unloads is for the front axle to rotate forward - this can be done by altering link lengths That is currently what happens though only a tiny amount. I did look into the geometry and stuff while building it but that was a couple of years ago originally so I’ve since forgotten everything of course 😂 I’ve marked my top links in the pic there, if I straighten (lengthen) them then it kinda squishes itself up (shortens) after climbing some things, as it is it kinda pulls itself down to the floor. I forget why though 🤦🏼♂️ Edited October 14, 2021 by Ross9999992 1 Quote Link to comment Share on other sites More sharing options...
stimpy Posted October 15, 2021 Author Share Posted October 15, 2021 Again hard without it in front of me but I'd say the rear doesn't look awful, the front upper chassis link could do with being lower. Your axles are very different to comp ones but essentially our front upper chassis point wants to be lower than the axle mount point with the upper links... Goodluck! Quote Link to comment Share on other sites More sharing options...
Popular Post stimpy Posted October 16, 2021 Author Popular Post Share Posted October 16, 2021 (edited) Had a Lorra’ fun today!! My mate Al had been on at me about a brilliant spot down Southampton way for ages but I just hadn’t the time..... Until today! About 3/4 mile of rock crawling high traction heaven!! 🥵 XR10 / Bully2 in action, as usual the pics do it no justice and I was having too much fun to remember decent pics!! 😂🙈 Ventru S clinging 👍 Brilliant rock!.. And finally... My mate Al’s Ventru Pro / MOA Again, no justice in the vid! Insanely, I actually managed this move after a few attempts with the sporty ( Ventru S), just had to hang along the rock a little further right before I could pull up... Brilliant day 👍 Edited November 8, 2021 by stimpy 5 Quote Link to comment Share on other sites More sharing options...
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