Electric Training If you are new to electric learn more about them here or ask questions.

Help understanding gearbox


Old 01-02-2004, 08:25 AM
Junior Member
Thread Starter
Join Date: Dec 2002
Location: lancaster, PA
Posts: 9
My Gallery
My Models
My Feedback
Default Help understanding gearbox

Please help. I am new to electrics and am having problems figuring out some of the basics regarding gears and ratios.

I am working a project that calls for the gws eps-350c motor with a DS Gear ratio of 6.6:1. Also recommended is a GWS 12X6 prop, 9.6V NiMh batteries. The problem is, I need to substitute with a CS Gear ratio which is 5.33:1. If I understand this right this will spin my prop faster and draw more current maybe even too much.

Can I use the CS Gear ratio as a substitute or do I also need to change the Prop size?

When I look at the specs on this motor a 12X6 prop isn?t even listed as an option?

Your comments and suggestions are appreciated.
esgroff is offline  
Reply With Quote
Old 01-03-2004, 12:38 PM
Matt Kirsch
My Feedback: (21)
Matt Kirsch's Avatar
Join Date: Jul 2002
Location: Spencerport, NY
Posts: 7,349
My Gallery
My Models
My Feedback
Default RE: Help understanding gearbox

Sounds to me like you've got the understanding part down pretty well already.

You are correct in that by going from 6.6:1 to 5.33:1, you will increase the current draw. You'll need to drop off by a prop size, from 12x6 to 11x7 or 11x6 to keep the current reasonable.
Matt Kirsch is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service