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Old 07-13-2015, 09:01 AM   #5941
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No, the standard ones. This is why there is a lot of camber.

On the low bite carpet set ups, I am using our teflon coated ball ends which are 1.5mm shorter and usually have a little bit less slop than the Yokomo parts while still staying free.
https://reflexracing.3dcartstores.co...ds_p_2480.html
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Old 07-14-2015, 08:33 AM   #5942
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Default gear ratios for bd7

Hi,

I have 2 bd7 ( stock and super stock)
I know asking for the ideal gear ratios or good spur/pinion gears combo depends on a lot of variables.

What im asking for are a good base to start from.

basically i want suggestions for a tight small track and a medium to big track

my stock is 21.5 speed passion 3.0 running on blinky mode while superstock is 13.5 reedy sonic on dualsky esc running with boost.

If anyone can suggest few options or at least point me towards the right direction

Thanks
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Old 07-14-2015, 11:46 AM   #5943
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ARENA New BD7 Hardened Steel Double Cardan Joint Set
Attached Thumbnails
YOKOMO Touring Car BD-7-ar-bd-010fwc.jpg   YOKOMO Touring Car BD-7-ar-bd-010fwc-3.jpg  

Last edited by RC MARKET; 07-15-2015 at 01:51 AM.
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Old 07-15-2015, 05:45 PM   #5944
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Radtec Yokomo BD7 parts are now available at RocheRC USA. Nearly every available option in stock now. http://shop.rochercusa.com/index.php...ory&path=85_92
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Old 07-15-2015, 06:29 PM   #5945
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Radtec Yokomo BD7 parts are now available at RocheRC USA. Nearly every available option in stock now. http://shop.rochercusa.com/index.php...ory&path=85_92
Nice
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Old 07-16-2015, 06:40 AM   #5946
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I'm trying to help a buddy out for this Friday race night. For the summer season we are just running USGT 21.5. The issue is he has a 2013 BD7 and we cant get the gearing to work. Wondered if there is a different motor mount set up? We went to smaller spur gear to allow for a bigger pinion. But the support just in front of the motor mount is in the way. Suggestions please. or does he have to buy a 2015?
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Old 07-16-2015, 07:38 AM   #5947
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Radtec Yokomo BD7 parts are now available at RocheRC USA. Nearly every available option in stock now. http://shop.rochercusa.com/index.php...ory&path=85_92
Awesome! The double joints and spool outdrives are excellent.
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Old 07-16-2015, 12:09 PM   #5948
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Quote:
Originally Posted by XCRAZYBENX View Post
I'm trying to help a buddy out for this Friday race night. For the summer season we are just running USGT 21.5. The issue is he has a 2013 BD7 and we cant get the gearing to work. Wondered if there is a different motor mount set up? We went to smaller spur gear to allow for a bigger pinion. But the support just in front of the motor mount is in the way. Suggestions please. or does he have to buy a 2015?
You can try to grind away a bit off of the mount support with a dremel. What gearing are you trying to hit and with what spur/pinion combo?

For 21.5 gearing, maybe a 48 pitch combo would be cheaper to do than changing kits. :-)
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Old 07-16-2015, 12:38 PM   #5949
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spur 95T-54T pinion

OR

spur 94T-53T pinion

I believe we are trying to get 3.0 -3.1 would be nice.


The issue isnt the motor mount we massaged it a bit i believe. But the support that is in front of the motor mount is in the way of a big pinion.
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Old 07-16-2015, 12:40 PM   #5950
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Quote:
Originally Posted by XCRAZYBENX View Post
I'm trying to help a buddy out for this Friday race night. For the summer season we are just running USGT 21.5. The issue is he has a 2013 BD7 and we cant get the gearing to work. Wondered if there is a different motor mount set up? We went to smaller spur gear to allow for a bigger pinion. But the support just in front of the motor mount is in the way. Suggestions please. or does he have to buy a 2015?
U r going to have to change the motor mount...I don't know Where u r on gearing..but if u want 4.0-3.5 use a 92-88 spur an u should be fine!!!
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Old 07-16-2015, 12:58 PM   #5951
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it is for 21.5 class 4.0 will be totally wayy to slow definitely need under 3.5. soo if u have recommendation. is there a upgraded motor mount for the old car?
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Old 07-16-2015, 01:28 PM   #5952
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buddy is going for 3.0-3.5 range. realy he needs to get closer to 3.0 for our track. but th elower he can get in this car

Last edited by XCRAZYBENX; 07-16-2015 at 01:41 PM.
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Old 07-16-2015, 11:27 PM   #5953
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Quote:
Originally Posted by XCRAZYBENX View Post
spur 95T-54T pinion

OR

spur 94T-53T pinion

I believe we are trying to get 3.0 -3.1 would be nice.
If you buy a 82 or 83 spur you can keep your 53/54 pinions and should be fine, see http://www.petitrc.com/reglages/yoko..._GearChart.pdf

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Old 07-17-2015, 02:11 AM   #5954
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Quote:
Originally Posted by skyball View Post
If you buy a 82 or 83 spur you can keep your 53/54 pinions and should be fine, see http://www.petitrc.com/reglages/yoko..._GearChart.pdf

Christian
That's for the 2014 version though - he said he has the 2013 version. And IIRC, there were changes made exactly for allowing different gearings for stock classes between those 2 versions.
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Old 07-18-2015, 04:04 AM   #5955
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I just checked with an old 2013 motor mount I had floating around,
best I could get with what I had was 88T spur and 55T pinion, it just fit.
This will get him down to 3.2

This was without any grinding of the motor mount to get some more pinion clearance, so with a little massaging there is probably a few more teeth you could fit.
A 14/15 motor mount with greater clearance will not install on a 13 chassis.

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