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Thread: Choosing a motor for kit build

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Old 11-21-2018, 05:23 PM   #1
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Join Date: Nov 2018
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Default Choosing a motor for kit build

The dynamite fuse that comes in the rtr has a 5mm shaft. It I build from the kit does my motor also need a 5mm shaft? Seems like 3.17mm is a lot more common.

Should I just buy a pinion gear with a 3.17 bore, or will that be a disability issue?

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Last edited by cfritznewton; 11-21-2018 at 05:52 PM.
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Old 11-22-2018, 12:00 AM   #2
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Default Re: Choosing a motor for kit build

Rock Rey is pretty heavy and burly. 5mm is probably preferred. I'm running a castle 1512 2650kv motor. Probably need to look at 1/8 scale motors. Just make sure they aren't any thicker than the castle 1512 because it barely fits.
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Old 04-08-2019, 08:05 PM   #3
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Default Re: Choosing a motor for kit build

Quote:
Originally Posted by furadi View Post
Rock Rey is pretty heavy and burly. 5mm is probably preferred. I'm running a castle 1512 2650kv motor. Probably need to look at 1/8 scale motors. Just make sure they aren't any thicker than the castle 1512 because it barely fits.
You pushing 3S on the 2650kv motor Furadi? I've been thinking about brushless for an SCX10. I have tons of 4S packs already but I haven't seen many people running 4S and lower kv, like 1800kv with 4S for a crawler/trail truck.
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Old 04-09-2019, 06:02 AM   #4
Quarry Creeper
 
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Default Choosing a motor for kit build

I am running a Holmes Puller Pro 540 BL 2700kV. It is a 3mm shaft and i bought a 3mm MOD1 pinion set for it in 9T and 12T. It works really well and crawls awesome(which was my goal) but the 3mm MOD1 pinions seem to be a rare bird.

ECX Pinion Gear 9T/12T x 3mm Mod 1 https://www.amazon.com/dp/B00IJE9MJO...p_mob_ap_share

Ive also seen a sleeve that converts the 3mm shaft to 5mm to let you run normal pinions.
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Old 04-09-2019, 03:58 PM   #5
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Default Re: Choosing a motor for kit build

I would look at 550 can motors. Majority of them have 5mm shafts. I put a Pro4 HD 3500kv in mine. Other options would be Holmes Puller Pro XL, Team Brood 550. Hobbywing 3660. Hobbywing being the most affordable of them all. I ran a hobbywing in my old Yeti and I had no complaints with it if you are looking at a more budget option for sensored brushless.
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