03-31-2023, 07:24 AM | #1 |
Rock Stacker Join Date: Jun 2016 Location: Bulgaria
Posts: 89
| XVD or Universals?
Hello everyone, I'm planing to build a bully 2 from a kit. I actually build one years ago, but sold it (regret it). Anyways, I see that rc4wd released universal shafts: https://store.rc4wd.com/Universal-Se...es_p_7209.html If I remember correctly, my 1st bully 2 kit came with XVDs: https://store.rc4wd.com/XVD-Axle-for...le_p_3303.html What do you guys run nowadays? Whats your opinion? |
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03-31-2023, 10:30 AM | #2 |
Rock Stacker Join Date: Mar 2020 Location: Bay area
Posts: 63
| Re: XVD or Universals?
I run dlux shafts. they will never break and you get increased steering. https://dluxfab.com/7mm-FBA-Bully2-F...afts-p12079026 |
03-31-2023, 03:15 PM | #3 | |
Rock Stacker Join Date: Jun 2016 Location: Bulgaria
Posts: 89
| Re: XVD or Universals? Quote:
Also, how do you mount the wheel hub? You can choose the axles with either the 8mm or wraith/xr stub? | |
04-01-2023, 11:53 AM | #4 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: XVD or Universals?
Universals always, you'll get more angle and strength compared to a CVD/XVD type. If you go the Dlux route you do need their knuckles too. The 8mm stub will require new hubs for your wheels, if you want it to be like stock get the wraith/XR stub. Are you breaking axles? do you need more strength? If so the 8mm stub and huge tang (and new gears) will provide that. I still run stock universals myself and haven't had any issues but I dont do the silly stuff comping makes you do at times (getting bound up and driving through it). Last edited by HumboldtEF; 04-01-2023 at 12:15 PM. |
04-01-2023, 12:01 PM | #5 |
Rock Stacker Join Date: Jun 2016 Location: Bulgaria
Posts: 89
| Re: XVD or Universals?
If I go with the dlux knuckles for 8mm stub and dlux fba axles with 8mm stubs, which hub should I choose so it can be mounted on the stock bully 2 wheels?
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04-01-2023, 12:23 PM | #6 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: XVD or Universals?
These are the 8mm hubs: https://dluxfab.ecwid.com/Wheel-hubs...haft-p19777271 These use a bolt pattern of 6 x .666" which does match up with the Bully wheels, I just double checked. |
04-01-2023, 12:31 PM | #7 | |
Rock Stacker Join Date: Jun 2016 Location: Bulgaria
Posts: 89
| Re: XVD or Universals? Quote:
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04-01-2023, 01:40 PM | #8 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: XVD or Universals?
Thats up to what you prefer. Personally I prefer a narrow track width over a wider one but you also need to consider if you have any clearance issues. I added the Dlux knuckles and had to step up to a wider (RC4WD) hub (not the 8mm hubs) and add a small spacer to get the steering link to clear the tire. I'll try to get some measurements off my Bully II a bit later. I have the Dlux knuckles but not the 8mm stub shafts so these should be close enough that all you might need is some spacers to fine tune them (linked below) If you have a 3D printer you can print these spacers I put up on Thingiverse, these are just to fine tune your fitment: https://www.thingiverse.com/thing:4761180 |
04-01-2023, 02:25 PM | #9 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: XVD or Universals?
Okay I pulled a wheel off my Bully II and if you want it as narrow as possible a .350 hub with a small 1.7mm spacer will match what I did to clear the Dlux knuckles. Or you can play it safe and go 1.5mm wider with a .475 hub. Since the 8mm stub shafts may be slightly different you should probably also email Dlux to see if they have a recommendation, they're pretty helpful. Last edited by HumboldtEF; 04-01-2023 at 03:21 PM. |
04-01-2023, 03:04 PM | #10 | |
Rock Stacker Join Date: Jun 2016 Location: Bulgaria
Posts: 89
| Re: XVD or Universals? Quote:
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02-27-2024, 05:43 AM | #11 |
Newbie Join Date: Jan 2015 Location: Montreal
Posts: 4
| Re: XVD or Universals?
I just bought a Bully 2 kit and I must say I'm a little disappointed with the steering. Not sure if I have a dud but the maximum angle I can get before the wheel starts twitching is less than 35 degrees. On RC4WD's website it says that the XVD can do 50 and the universals can do 45. Do people actually get 45 degrees out of the universals? I'm looking to upgrade but not sure if I want to be disappointed again... On a side note, do people actually get 50 degrees on the XVD's or is mine simply not working correctly?
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02-27-2024, 10:18 AM | #12 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: XVD or Universals?
I've never tried the XVDs so I cant comment on the max angle. I will say that all front axles will surge/twitch when they get close to the max angle especially when theres no load (rig upside down or wheels off the ground), put the rig down and it should lessen a little bit. That said there could also be something wrong. If you can post up a short video that would be helpful. |
02-27-2024, 01:50 PM | #13 | |
Newbie Join Date: Jan 2015 Location: Montreal
Posts: 4
| Re: XVD or Universals? Quote:
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02-27-2024, 06:50 PM | #14 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,482
| Re: XVD or Universals?
Well I just checked my Bully 2 and it does have the CVDs after all. I can get what looks to be about 50° of steering though I did set the trim a bit conservative at maybe 45° just so I dont run the shaft into the drive cup and break things. Its surprisingly smooth at fully lock, it still surges a little bit but not as bad as I was expecting and not as bad as most of my other rigs that use universals. You might try applying some light machine oil or grease to the CVDs. Last edited by HumboldtEF; 02-27-2024 at 07:03 PM. |
Tags |
bully 2, cvd, universals, xvd |
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