Crotch Belt Install in ERA 757

Bobcat · #1 (**permalink**) 08-15-2010, 12:39 PM

Finally got around to installing my crotch belts . Thanks to a solution Bob P. at ERA came up with , installation was easy .... and more importantly , attaches the mounting plate/belt to the frame member that runs under the seats in the proper location . The frame has nut serts installed ( 6 ) for the bolts to connect to ..... frame isn`t tapped for the bolts . All hardware is grade 8 .
Bob has dimensioned drawings if anyone is interested in doing this .... however , check with him on your specific chassis/seat combination . I have no idea if this can be used on anything other than an ERA .
I did have to bend the belt attachment tabs 90 degrees as it felt like I had a proctologist under the seat when I hit a big bump at speed .
Here are some pics .

Bob

Fullchat289 · #2 (**permalink**) 08-16-2010, 08:13 AM

Thanks for posting this solution....was wondering about this myself..

How did you go about adding the nut serts?

- Allen.

strictlypersonl · #3 (**permalink**) 08-16-2010, 11:42 AM

Quote:

Originally Posted by Fullchat289

Thanks for posting this solution....was wondering about this myself..

How did you go about adding the nut serts?

- Allen.

There are special tools, but you can do it the same way it's described in the manual for the front nudge bar attachments.

Kramer · #4 (**permalink**) 08-16-2010, 01:33 PM

I need to do the same thing. So are the plates attached to the frame underneath? Do you have any pictures from under the car so I can see how this looks?

strictlypersonl · #5 (**permalink**) 08-16-2010, 01:49 PM

Kramer,

After removing the seat, you do everything from the top side. I will post the dimensioned drawings Tuesday. You locate the holes in the frame rail relative to the seat holes in the floor.

Kramer · #6 (**permalink**) 08-16-2010, 01:55 PM

look forward to seeing the drawings....I will get under my car tonight and get a look in hopes of getting a good idea of how this might work.

Bobcat · #7 (**permalink**) 08-16-2010, 03:10 PM

Kramer ... other than unbolting/bolting the seat hold down nuts , you really don`t need to do anything from underneath the car . What Bob came up with is locating the bracket over the chassis member that is under the floor from the top . Pull up the carpet and locate the holes per his drawing . You then drill and put the nut serts in , which are placed in the chassis member itself and the bracket rests on the floor . I put the carpet back , bolted the bracket down and then cut away the carpet so the bracket would be on the bare floor . Keep in mind that you will probably have to bend the belt mounting hardware at either a 45 or 90 degree angle to clear the seat bottom on bumps/road dips , however , this can depend on where you have your seat adjusted ( adjustable seat ) .
Really works well .

Bob

strictlypersonl · #8 (**permalink**) 08-18-2010, 05:35 AM

It's Monday, right???

Crotch Strap Installation

Fullchat289 · #9 (**permalink**) 08-18-2010, 05:52 AM

Thanks for this, Bob...

'Bout that drawing....

I realize I didn't get a lot of sleep last night, but I'm not seeing the height/width of the triangular gussets..seems the height is a critical dimension....

- Allen.

strictlypersonl · #10 (**permalink**) 08-18-2010, 06:36 AM

I've put a new drawing up with the dimensions. If the drawing is printed at 100%, you can always scale what you have.
*Note that the drawing name is now a little different.
http://www.erareplicas.com/427man/cr...ap_bracket.pdf

Kramer · #11 (**permalink**) 08-18-2010, 08:07 AM

Thanks Bob - I know I may be asking A LOT...but with work and family responsibilities I have to ask...do you guys feel like making these for me?

..of course I will compensate you accordingly...if not, can u refer me to someone who can...I don't have time or the tools to do this right....

Let me know ur thoughts, or just tell me to pic up the phone and I'll call.

Kramer

CobERA · #12 (**permalink**) 08-18-2010, 08:21 AM

Bob P,

I'm with Kramer. Would be interested in a pair if you guys make some.

Do the seat hole/frame dimensions you show on your website work for #644?

Thanks,
Rick

twobjshelbys · #13 (**permalink**) 08-18-2010, 08:36 AM

Quote:

Originally Posted by strictlypersonl

It's Monday, right???

Crotch Strap Installation

Awesome modeling!

strictlypersonl · #14 (**permalink**) 08-18-2010, 10:24 AM

I'll work up some numbers for a complete kit.

strictlypersonl · #15 (**permalink**) 08-18-2010, 03:45 PM

*Note! Bobcat tells me that my assumed method of connecting the belt (with a clip through an eye, like the seat belts) might not be the "normal" submarine belt termination. I'll have to check that out, and possibly modify the design.

Bobcat · #16 (**permalink**) 08-18-2010, 04:15 PM

Update .... the attachment that came with the Crowe belt was not the snap/latch type , it was one piece of metal , and as such presented an attachment problem . Called Crowe today and they have an eye bolt/washer/nut and bracket that snaps on for the 2' belt ... part number is 11546 at $6.96/unit . This makes Bob`s bracket work as he intended and solves any clearance issues .

CobERA · #17 (**permalink**) 10-11-2010, 01:15 PM

Bob,

Are you still looking at putting a package together for this?

cobra · #18 (**permalink**) 10-16-2010, 01:42 AM

Dear Bob

Will your bracket also fit under the old seats on my ERA # 571 ?

Thank you

strictlypersonl · #19 (**permalink**) 10-16-2010, 05:08 AM

Sorry I haven't replied sooner... I've got a pile of projects waaay behind schedule.

The current design will only work with steel-framed seats, starting roughly around chassis 700. If the early car has seat tracks, something might be worked out, but not the current design.

cobra · #20 (**permalink**) 10-17-2010, 11:54 AM

Thank you Bob

I have the seat tracks and I will mesure the space.