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Frame/drive train members below base plane??

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osfetter View Drop Down
Double Secret Probation
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    Posted: Oct/28/2019 at 9:10am
Is it allowable to have components hang below the base plane of the vehicle? For example, if a pulley was below member FABlow, could the frame be bumped out to surround it?
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Milling Master
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bracer Quote  Post ReplyReply Direct Link To This Post Posted: Oct/31/2019 at 11:42am
From what I remember, yes, you can have components hang below the base plane of the frame, just as long as they are not safety related. But do you really want a critical piece of the drive train such as a pulley in a location that can get broke by an hitting something?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote osfetter Quote  Post ReplyReply Direct Link To This Post Posted: Oct/31/2019 at 12:12pm
Well the idea was to surround critical afotmetioned parts by frame members so they don't get bashed, and that's where I'm concerned with a rule infraction.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bracer Quote  Post ReplyReply Direct Link To This Post Posted: Nov/04/2019 at 9:35am
***THIS IS MY INTERPRETATION OF THE RULE, FOR OFFICIAL INTERPRETATIONS, SEND AN INQUIRY ON BAJASAE.NET*****

Rule B.3.2.13.2 is where the bulk of the rear bracing rules are located. Most teams use points B, S,and R for the structural triangle. This allows you to connect back to point A with multiple joined members, and this defines the FAB_low. 

According to rule B.3.2.5, you do not need to have any LC in the FAB_low, so any tube you place connecting both sides is up to you and *should be able to be below the FAB_low.

Again, this is my interpretation of the rules as a recent grad. You can send pictures of your frame ideas on your rules questions to bajasae.net. They might take awhile to get an answer, but then it will be correct.
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