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BrianG · 02:49 PM

That's pretty cool. I too have some comments:

- Tranny locking. I don't really know what you mean by using piano wire, but the way I locked mine seems to be quite effective: http://www.rc-monster.com/forum/show...3&postcount=23. I know you might have seen this already since you posted a reply in that thread.

- Mod1 Gears. As pointed out before, Mike offers Mod1 pitch pinions and traxxas offers stock 36, 38, and 40T spurs which are Mod1 as well. Due to the fact that the 1mm pitch is a bit stronger than other pitches, I would think that you would go with that simply for durability. This would negate the need for the milled adaptor that goes on the slipper assemby. Plus, the stock Revo spur seems to be wider which would help distribute the force across more tooth surface area.

- Gearing. In my locked tranny, I decided to remove first gear and install the wide-ratio gear set. This gearing is still lower than an e-maxx tranny, so it makes up for the relatively low pinion/spur ratio when using the stock 40T revo spur. A little while back, I created an online R/C speed calculator that takes the various gear ratios into consideration: http://scriptasylum.com/rc_speed.html. There has been some debate over the accuracy of the final speed, but the gear ratios are correct. You can select from several known transmissions and such to see the relative difference.

- Battery placement. I like your overall design, but I was planning to make trays that would fit underneath the truck. That would really lower the CG and allow you to equally balance the truck. However, this would reduce the clearance by about 3/4" over stock, but frees up a lot of space on top of the chassis to install the ESC (even is a box to protect it better). The reduced ground clearance might make it better suited for racing primarily.

Can your motor mount be adjusted horizontally? It looks like that milled piece pushes the spur further back, but if I don't use it, the pinion will fall short. If the motor can slide forward a little, it would solve that problem (for me anyway).

	(#5)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	03.22.2006, 02:47 PM That's pretty cool. I too have some comments: - Tranny locking. I don't really know what you mean by using piano wire, but the way I locked mine seems to be quite effective: http://www.rc-monster.com/forum/show...3&postcount=23. I know you might have seen this already since you posted a reply in that thread. - Mod1 Gears. As pointed out before, Mike offers Mod1 pitch pinions and traxxas offers stock 36, 38, and 40T spurs which are Mod1 as well. Due to the fact that the 1mm pitch is a bit stronger than other pitches, I would think that you would go with that simply for durability. This would negate the need for the milled adaptor that goes on the slipper assemby. Plus, the stock Revo spur seems to be wider which would help distribute the force across more tooth surface area. - Gearing. In my locked tranny, I decided to remove first gear and install the wide-ratio gear set. This gearing is still lower than an e-maxx tranny, so it makes up for the relatively low pinion/spur ratio when using the stock 40T revo spur. A little while back, I created an online R/C speed calculator that takes the various gear ratios into consideration: http://scriptasylum.com/rc_speed.html. There has been some debate over the accuracy of the final speed, but the gear ratios are correct. You can select from several known transmissions and such to see the relative difference. - Battery placement. I like your overall design, but I was planning to make trays that would fit underneath the truck. That would really lower the CG and allow you to equally balance the truck. However, this would reduce the clearance by about 3/4" over stock, but frees up a lot of space on top of the chassis to install the ESC (even is a box to protect it better). The reduced ground clearance might make it better suited for racing primarily. Can your motor mount be adjusted horizontally? It looks like that milled piece pushes the spur further back, but if I don't use it, the pinion will fall short. If the motor can slide forward a little, it would solve that problem (for me anyway). Last edited by BrianG; 03.22.2006 at 02:49 PM.