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Old 07-25-2016, 01:32 AM   #7186
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Originally Posted by mikeygar View Post
could be your o-rings are swollen, pressing hard the washer under the pin. I had that same problem and my diffs felt really tight and gritty. My 3k diff felt heavier than a 5k diff from an older car. Upon inspection the metal washer had wide scratch marks which probably caused the rough and heavy feel.

I changed my o-rings from the orange ones to the black ones (BD-500GM) and diffs now feel free with no binding.
Thats weird, i have the black ones. What part number are you using? Maybe i got the wrong ones :S

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Old 07-25-2016, 08:44 AM   #7187
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could be your o-rings are swollen, pressing hard the washer under the pin. I had that same problem and my diffs felt really tight and gritty. My 3k diff felt heavier than a 5k diff from an older car. Upon inspection the metal washer had wide scratch marks which probably caused the rough and heavy feel.

I changed my o-rings from the orange ones to the black ones (BD-500GM) and diffs now feel free with no binding.
Sry, i saw the part number now hahaha. But i had the tok-bd-500gob ones, is that the wrong o-rings???
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Old 07-25-2016, 06:40 PM   #7188
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not sure what the difference is between the GM and GOB rings are, but disassemble your diff and remove the small gears that form a cross. Spin the outdrives and feel if they are sticky. Remove the gear inside and the pin, spin again, if there is a big difference in the way they feel then you have a problem somewhere there. Thats how I found my o-rings were swollen.
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Old 07-26-2016, 07:09 AM   #7189
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What is general consensus of the 2016 version of BD7 versus 2014 version? Is the new car so significantly better that is worth of upgrading? What option parts are upwards compatible, can use springs, swaybars or front diff from the old car?

I am solely running on medium-high traction indoor carpet tracks.
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Old 07-26-2016, 08:24 AM   #7190
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What is general consensus of the 2016 version of BD7 versus 2014 version? Is the new car so significantly better that is worth of upgrading? What option parts are upwards compatible, can use springs, swaybars or front diff from the old car?

I am solely running on medium-high traction indoor carpet tracks.
If you're strictly running carpet get the 2016 BD7.. they have the conversion kit at amain hobbies on sale.
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Old 07-27-2016, 01:39 AM   #7191
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Default TECHRA blocks

Hi BD7 racers. Has someone used the TECHRA blocks and give a feedback on quality, sloppy or not, and maybe durability? Would like to order them or the much more expensive samix blocks...
Thanks!
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Old 07-27-2016, 07:56 AM   #7192
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Hi BD7 racers. Has someone used the TECHRA blocks and give a feedback on quality, sloppy or not, and maybe durability? Would like to order them or the much more expensive samix blocks...
Thanks!
I have the Techra blocks and they seem to be pretty durable, no apparent sloop, it looks like they use the same inserts as the VBC cars. The split mounts have more of a lip machined into them so there is less likelihood of popping the back of the insert out from arm impact. They are the same height as the stock parts so no difference in the lower roll center. Seem pretty decent.
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Old 07-27-2016, 09:06 AM   #7193
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Hey Rodney thanks a lot for your review! So its not possible to change roll center height via inserts right? Still willing to order them
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Old 07-27-2016, 02:00 PM   #7194
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Hey Rodney thanks a lot for your review! So its not possible to change roll center height via inserts right? Still willing to order them
Thats correct, only one height for the inserts, lower roll center done via spacers like original intent. Samix use the xray inserts with the two variables build in.
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Old 07-27-2016, 02:04 PM   #7195
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They are .5mm lower than the standard blocks


Quote:
Originally Posted by Rodney Racer View Post
I have the Techra blocks and they seem to be pretty durable, no apparent sloop, it looks like they use the same inserts as the VBC cars. The split mounts have more of a lip machined into them so there is less likelihood of popping the back of the insert out from arm impact. They are the same height as the stock parts so no difference in the lower roll center. Seem pretty decent.
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Old 07-28-2016, 09:12 AM   #7196
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New Yokomo Belt
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YOKOMO Touring Car BD-7-yo-b7-177lu.jpg  
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Old 07-28-2016, 12:33 PM   #7197
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anyone know what the spring rates are on the YOK springs? want to compare to other springs like xray and axon etc????
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Old 07-29-2016, 08:07 PM   #7198
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Originally Posted by evochick View Post
Sorry yes about 2mm wider, i also made the front wide as well i think it was 5.0 fr and 5.7 ff

This wide setup is aparently great on carpet for stock, but i am yet to run on carpet.
For high bite new CRC black carpet, what rear combo is a good start?

I am going to try the 5.7/5.0 wide front.

Curious on what combo in the rear with 2.5 toe?
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Old 07-30-2016, 03:48 AM   #7199
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For ~2.5 rear toe (or more precise: between ~2.4 and ~2.6, no combo gives exactly 2.5, when calculated), you could use either of the following combinations:

#1: 2.0/5.7 (most commonly used for 2.5 toe)
#2: 2.7/6.4 (for a 0.7mm wider track)

and for even wider track (but these mounts were actually introduced for the use with the shorter arms) you could theoretically (never tried any of these) also use:
#3: 3.5/7.2 (0.8mm wider than #2)
#4: 4.2/7.9 (0.7mm wider than #3)
#5: 5.0/8.7 (0.8mm wider than #4)
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Old 07-30-2016, 01:41 PM   #7200
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Can someone tell me what the overall length of a standard rear suspension arm is please? I have a pair of arms that look short to me. Thanks.
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