So I just wanted to start a thread where we could go over and discuss a few factors having to do with gearing down the Venture, using 550 sized motors and what can be done to overcome the limitations.
The Venture uses 48p gears and I believe the lowest possible tooth count for 48P is maybe 11t? (correct me if I'm wrong) Although it seems a bit risky to use such a small pinion gear in combination with the metal spur gear it comes with since there so little material left on these low tooth count pinions.
The issue is that to gear down this low you will run into a few possible obstacles. The first being the adjustment slot cut in the motor mount doesn't allow you to get close enough to mesh lower tooth count pinions. I found that it wont even allow me to mesh a 14t pinion (using a 540 sized motor).
What I did for this is just extend the slot with a drill and drill bit using the side of the bit to cut (not the intended use case but works). I also extended the slot in the plastic piece too. I think I slotted this farther than needed but no harm no foul.
The next limitation you might run into is the front crossmember which is also the servo/motor mount. It's very close to the motor and even closer with a 550 motor due to the larger diameter of motors that size.
I've heard first hand that with the HH Revolver (which is .8mm smaller than a 550) that the lowest you could go with a pinion might be a 17t. My friend found out it was rubbing on the crossmember after he noticed smoke (luckily not the magic type). This happened when he tried a 14 or 15t pinion.
For this issue my idea was to design a new front crossmember to give 550 motors more clearance and allow more room to gear down. Now I'm still assembling my SBK at the moment so I dont really know if I can make more space or not. I've seen a few other folks asking about 550's in the Venture and thought this would be useful for others too.
Anyway if we know the lowest we can gear down in theory is a 11t and the size of a 550 motor is 36mm all I need to find out is how much room we have stock vs how much we need to get the max clearance.
I think theres some sort of formula lurking in there but I need time to unrack my brain.
This is all theory right now (the crossmember idea) so forgive the lack of detail and specifics.
I welcome any ideas or discussion on the topic, post em up "thumbsup"
The Venture uses 48p gears and I believe the lowest possible tooth count for 48P is maybe 11t? (correct me if I'm wrong) Although it seems a bit risky to use such a small pinion gear in combination with the metal spur gear it comes with since there so little material left on these low tooth count pinions.
The issue is that to gear down this low you will run into a few possible obstacles. The first being the adjustment slot cut in the motor mount doesn't allow you to get close enough to mesh lower tooth count pinions. I found that it wont even allow me to mesh a 14t pinion (using a 540 sized motor).
What I did for this is just extend the slot with a drill and drill bit using the side of the bit to cut (not the intended use case but works). I also extended the slot in the plastic piece too. I think I slotted this farther than needed but no harm no foul.
The next limitation you might run into is the front crossmember which is also the servo/motor mount. It's very close to the motor and even closer with a 550 motor due to the larger diameter of motors that size.
I've heard first hand that with the HH Revolver (which is .8mm smaller than a 550) that the lowest you could go with a pinion might be a 17t. My friend found out it was rubbing on the crossmember after he noticed smoke (luckily not the magic type). This happened when he tried a 14 or 15t pinion.
For this issue my idea was to design a new front crossmember to give 550 motors more clearance and allow more room to gear down. Now I'm still assembling my SBK at the moment so I dont really know if I can make more space or not. I've seen a few other folks asking about 550's in the Venture and thought this would be useful for others too.
Anyway if we know the lowest we can gear down in theory is a 11t and the size of a 550 motor is 36mm all I need to find out is how much room we have stock vs how much we need to get the max clearance.
I think theres some sort of formula lurking in there but I need time to unrack my brain.
This is all theory right now (the crossmember idea) so forgive the lack of detail and specifics.
I welcome any ideas or discussion on the topic, post em up "thumbsup"
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It is a tad looser mesh than i usally like, but i dont think it will be a problem.
