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Old 07-13-2014, 07:43 AM   #5116
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Looks great ^^^

Where did you get the orange shock collars?
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Old 07-13-2014, 07:48 AM   #5117
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Will these work on the XB4 (2014)?

http://www.amain.com/product_info.ph...k-Nut-Orange-2
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Old 07-13-2014, 08:07 AM   #5118
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Not work on XB4 , but you can found it on bay .................
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Old 07-13-2014, 08:08 AM   #5119
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Looks great ^^^

Where did you get the orange shock collars?
Exotek on bay .
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Old 07-13-2014, 10:20 AM   #5120
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Originally Posted by Smokem Racing View Post
Hey guys. Just letting you know we have some option bits for the XB4 on sale for this weekend only. Check them out here - http://shop.smokem-racing.com/XRAY-XB4-Parts_c_17.html

Thanks for your time!
I'm using the Smokem Racing shock towers for the XB4, and they're really good. They have the extra set of holes on the outside for more camber gain/quicker reacting car, and they've been real good for my car on the low-med traction track I race on.
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Old 07-13-2014, 11:42 AM   #5121
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I'm using the Smokem Racing shock towers for the XB4, and they're really good. They have the extra set of holes on the outside for more camber gain/quicker reacting car, and they've been real good for my car on the low-med traction track I race on.
What is the shipping time from the site?
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Old 07-13-2014, 11:47 AM   #5122
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What is the shipping time from the site?
Not bad. I think i got mine in about a week. They're small and it got delivered right to my mailbox.
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Old 07-13-2014, 11:52 AM   #5123
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Is there a longer ball stud available for the rear hub? I have had 2 of them pull out and would like to add a small lock nut on the back to prevent this.

After doing some digging I found these. Gonna give them a shot.
http://www.amain.com/product_info.ph...-2-10mm-Thread
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Old 07-13-2014, 12:34 PM   #5124
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Originally Posted by Synergy View Post
Is the Yokomo a direct replacement or does something need modification?
+1.

Both the B-Max4 III and XB4 run 40T bevels - the pinions look similar in size and mount on a flat side of the CVD...it might work, I'd like to know as well. A buddy of mine is going to lend me a set to try the fit and I'll report back in a week or two - unless anyone else knows?
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Old 07-13-2014, 01:00 PM   #5125
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can you run the kit pinion with the steel ball diff gears or do you need a steel pinion also.
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Old 07-14-2014, 08:37 AM   #5126
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Good job ViK at the jconcepts race
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Old 07-14-2014, 04:00 PM   #5127
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Quote:
Originally Posted by ferrarieeeee View Post
x2, we used to have so many xb4 in our local track but everyone switch to yokomo etc. bcos of the r&p problem
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Originally Posted by ferrarieeeee View Post
metal gears? details please x 2, very interested. Any additional parts required in addition to these two?

http://www.amain.com/product_info.ph...ial-Drive-Gear

http://www.amain.com/product_info.ph...-Ring-Gear-40T
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Originally Posted by brnantunes View Post
Hello anyone allready test xb4 with shorty? Or it's possible convert to shorty?
I have a friend that put yokomo metal dif gear/pinion, it's simple conversion.

Tnks
OK, so I got the Yokomo input and ring gear.

Couple things so far aren't lining up and need your help.

1. ring gear screw holes are too small for m3 screws...what do you do here? drill them out?
2. putting outdrives thru the ring gear they seem a little too long...shim a bunch and where?
3. o ring for the outdrive doesn't fit, what O ring to use?

Anything else?

Can anyone that has done this post up the fix to use the Yokomo metal gears?
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Old 07-14-2014, 06:15 PM   #5128
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Checking the Yokomo BMax4-III manual, it shows M2x8mm screws to be used on the bevel gear, not Xray's M2.5. Your next problem is that the Xray case is M2.5 - so you'll need to enlarge the screw holes in the steel bevel gear to accept the M2.5 screw. If you have a steady hand g'head - but a drill press is best.

Next - the outdrives are Xray outdrives right? What you need to ensure is that the outdrives stick out from the diff the same amount/distance as the stock diff. I wonder if Yokomo outdrives would work - all of a sudden this conversion is a lot more complicated. You may have to shim a little on the inside and outside of the diff to get the right clearances - might even have to cut the outdrive. Dremel time. Be careful, that's hardened Hudy steel, no beers until after the work is done! Sparks!

Lastly, the Yokomo o-ring set is BD-500GM. It does not show the actual size of the proper o-ring to be used. The Xray uses a 5x2mm o-ring, 972050, so my guess is you'll need the Yokomo kit above (about $7, includes shims, gear and cross pins, noe of which will probably fit...) or simply find some other o-ring, maybe a Kyosho? Is the Xray o-ring too big or too small?

How some pics of your progress, matching the Yok/Xray vs. a stock Xray diff?

Did the pinion fit onto the center CVD ok?

http://www.petitrc.com/setup/yokomo/...oBMax4III.html
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Old 07-15-2014, 05:07 AM   #5129
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Quote:
Originally Posted by HeavyD99 View Post
Checking the Yokomo BMax4-III manual, it shows M2x8mm screws to be used on the bevel gear, not Xray's M2.5. Your next problem is that the Xray case is M2.5 - so you'll need to enlarge the screw holes in the steel bevel gear to accept the M2.5 screw. If you have a steady hand g'head - but a drill press is best.

Next - the outdrives are Xray outdrives right? What you need to ensure is that the outdrives stick out from the diff the same amount/distance as the stock diff. I wonder if Yokomo outdrives would work - all of a sudden this conversion is a lot more complicated. You may have to shim a little on the inside and outside of the diff to get the right clearances - might even have to cut the outdrive. Dremel time. Be careful, that's hardened Hudy steel, no beers until after the work is done! Sparks!

Lastly, the Yokomo o-ring set is BD-500GM. It does not show the actual size of the proper o-ring to be used. The Xray uses a 5x2mm o-ring, 972050, so my guess is you'll need the Yokomo kit above (about $7, includes shims, gear and cross pins, noe of which will probably fit...) or simply find some other o-ring, maybe a Kyosho? Is the Xray o-ring too big or too small?

How some pics of your progress, matching the Yok/Xray vs. a stock Xray diff?

Did the pinion fit onto the center CVD ok?

http://www.petitrc.com/setup/yokomo/...oBMax4III.html
thanks for the armchair report but I'm looking for someone that has done this before and KNOWS what works. The guys who posted said it was a easy conversion.

Anyone that has done this and knows exactly what to do can you please post up?

thanks
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Old 07-15-2014, 06:58 AM   #5130
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@Mullet - The M2 vs. M2.5 is a solid answer to your first problem. The rest was certainly armchair. Hopefully someone who has done the conversion will chime in soon. Good luck with your Yokomo modification and don't forget to post it up when you're done.
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