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Old 11-28-2014, 10:59 AM   #5041
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Just finished. Going to test tomorrow!

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Old 11-28-2014, 02:54 PM   #5042
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Just finished. Going to test tomorrow!

Looks good


How does the spur balance with no bulkhead on the other side?
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Old 11-28-2014, 03:00 PM   #5043
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Looks good


How does the spur balance with no bulkhead on the other side?
Balances quite nicely,runs very free and quiet.
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Old 11-29-2014, 10:14 AM   #5044
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Picking mine up tomorrow. I'll have a 13,14 and 15
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Old 11-29-2014, 08:45 PM   #5045
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My BD7 is the first generation and I find the motor mount post is kind of blocking the pinion. So if I am using a 64p 96t spur, what's the biggest spur I can use?
What is the smallest 64 spur I can find to use on BD7? Can I use kawada SM6476 Spur on BD7?
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Last edited by policeman0077; 11-30-2014 at 08:48 AM.
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Old 11-30-2014, 01:07 AM   #5046
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What we did in the past was to dremel the motor mount post, so we could fit a bigger pinion. We could get down to 3.3 fdr and lower. You dremel the top and bottom of the post.
In 64 pitch for 13.5 blinky I was using a 86 tooth spur and either a 52 or 53 tooth pinion. Gives a fdr of 3.31,(52) or 3.25,(53).
Hope that helps.
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Old 11-30-2014, 08:47 AM   #5047
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What we did in the past was to dremel the motor mount post, so we could fit a bigger pinion. We could get down to 3.3 fdr and lower. You dremel the top and bottom of the post.
In 64 pitch for 13.5 blinky I was using a 86 tooth spur and either a 52 or 53 tooth pinion. Gives a fdr of 3.31,(52) or 3.25,(53).
Hope that helps.
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I don't want to dremel it.... But thank you very much anyway
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Old 11-30-2014, 08:54 AM   #5048
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I don't want to dremel it.... But thank you very much anyway
You could just pick up the newer part
I believe it was a running change
Both of my 13s came with the later edition part

Old vers


New vers
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Old 11-30-2014, 09:12 AM   #5049
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[...]

What is the smallest 64 spur I can find to use on BD7? Can I use kawada SM6476 Spur on BD7?
If 64 pitch is not a strict imperative, you can use 48p with a 63 or smaller spur and a spread of pinions to give ratios around 3.xxx (60/41 gives 3 exactly).
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Old 11-30-2014, 09:33 AM   #5050
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where can I order this part? And how much?
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Old 11-30-2014, 09:35 AM   #5051
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If 64 pitch is not a strict imperative, you can use 48p with a 63 or smaller spur and a spread of pinions to give ratios around 3.xxx (60/41 gives 3 exactly).
what's the difference if I use 48p spur? less smooth? larger steps of adjustability?
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Old 11-30-2014, 09:38 AM   #5052
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http://www.amain.com/robinson-racing...ear-81t/p30556


can I use robinson racing's 64p spur? seems I will lose 2 screws to secure the belt pulley, if I can mount it on belt pulley....
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Old 11-30-2014, 10:33 AM   #5053
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what's the difference if I use 48p spur? less smooth? larger steps of adjustability?
You can run a lower tooth count for both pinion and spur for the same final drive. That means smaller diameter hence pinions that fit with the motor mount you have. You didn't notice the difference in numbers?
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Old 11-30-2014, 02:02 PM   #5054
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http://www.amain.com/robinson-racing...ear-81t/p30556


can I use robinson racing's 64p spur? seems I will lose 2 screws to secure the belt pulley, if I can mount it on belt pulley....

You can use it just counter sunk the hole.
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Old 11-30-2014, 03:42 PM   #5055
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Default Roche Front Double Joint Driveshafts

Im running these driveshafts in my BD7 2015, I broke one of the pins in it today. Are these driveshafts the same as the Spec R items ??? I wondering If I can use a Spec R pin ????
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