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 J2 Floorboard Ramp
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John Brinkmann

USA
153 Posts

Posted - 29/07/2020 :  05:10:51  Show Profile
Why is there a 20º ramp at the outside rear corners of the J2 floorboards?

John
J3752

Drolshagen

Germany
669 Posts

Posted - 29/07/2020 :  09:32:46  Show Profile
Moin John,
short answer,that is the room the rear spring needs on full bump,

cheers
Carl
J2 4362
L2 2036
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njnh

United Kingdom
404 Posts

Posted - 29/07/2020 :  14:14:14  Show Profile
Like others, I initially thought that the ramps were there to accommodate the springs on full bump. But I don't see how the springs can rise so much that they hit the underside of the floorboards. Similarly there seems to be no way that the rear axle could rise to the full height of the rubber buffers fitted to the top of the steel hoops bolted on the chassis. I have decided not to include the ramps in my restoration - am I wrong?

Nigel H
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Simon Johnston

United Kingdom
6137 Posts

Posted - 29/07/2020 :  14:36:34  Show Profile
I don’t have the ramps but the floor had been cut away to provide for them so we just screwed a flat covering panel onto the floor. This has the advantage of being easily removable to give much better access to the brake cable adjusters. Perhaps not so relevant with 12” brakes but it makes things much easier to get at with the 8” ones.

Simon J
J3437
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robin

United Kingdom
177 Posts

Posted - 29/07/2020 :  19:44:13  Show Profile
Perhaps trial drivers could offer some insight.My Stiles D has taper machined out the bottom of 7/8 ths board,two inches wide.P lansdowne still has them.

robin
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Onno

Netherlands
1045 Posts

Posted - 29/07/2020 :  19:50:57  Show Profile
When trialing the bumpstops are easily reached.
But with the current roads (better than in the 30’s) I indeed doubt you will ever reach them

Onno "J,D" Könemann
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Robin Macmillan

United Kingdom
415 Posts

Posted - 30/07/2020 :  08:07:16  Show Profile
Sadly Omno the roads in the U.K. do not match those on the continent , certainly in towns and cities. The potholes and speed humps exercise the suspension to its limit !

PB 0527
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John Brinkmann

USA
153 Posts

Posted - 30/07/2020 :  08:13:35  Show Profile
Thanks, gents. Since the body tub of my car is original and has metal panels that include this slope, the new floorboards will include it—even though no trials are planned.

John.
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