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Old 09-04-2019, 06:36 PM   #1
ilmung
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Default OBD pedalbox

Maybe I will buy a OBD sport pedalbox for my Midas Mini .
But they are only available with bias brake cylinders .
As I do not have much experience with bias brake system,here my questions :

* is this system ok for road/fast riding , can you regulate this accurately ?
* is this a safety system , I mean does it stay stable ( no change in front and
rear braking after some time ) ?
Thanks for your reply !
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Old 10-04-2019, 09:50 AM   #2
edk83
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do you mean obp?

Yeah they can be set accurately, also they can be locked in place with a bolt and pin.
Put a bias valve in the rear line as well for further adaptability
You dont normally run a servo with these so they are hard work
Also you may want to look at reinforcing them and the floor or when you mount it.
Mine is reinforced and it still has more flex than I'd like, the more expensive brands seem to be make of thicker steel
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Old 10-04-2019, 06:48 PM   #3
mm man
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When I was looking into these a few people on here had issues with them flexing .
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Old 11-04-2019, 10:35 AM   #4
ilmung
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Yes , sorry it's OBP !
I do a conversion with a g13b in a Midas Mini and as the inletcollector take the place of the righthand placed cylinders , I have to move them.
I do not like to put them on the left side because I need to make holes in the Bulkhead again (GRP !!!) ,so I am looking for other possible solutions.

Indeed I see + en - reviews of the OBP pedalbox ,difficult to make the right choice than.
Was it long time ago you bought the obp pedalbox ,maybe obp made some modifications to improve the pedalbox ?
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Old 11-04-2019, 12:33 PM   #5
edk83
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I bought mine used and modified it to fit, I ended up buying new masters and pots as well so maybe I should have bought new.

I have been told they have increased the steel thickness now, mine is an older type probably and it defiantly flexes too much.

They do work if you have no pedals at all but the more expensive ones are certainly going to be better. At least if you buy new you could return them if you don't fit them and don't trust them.

Welding more steel into them is on my to do list, the flex is only slight but you can see the accelerator pedal move slightly when putting a lot of pressure on the brakes, I've added more welds to the seams on mine and the floor is reinforced, but it needs more still.
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Old 12-04-2019, 11:21 AM   #6
Marcus Nordblom
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I have one on the shelf, its kind of bulky and the pedals are pretty long. I have a feeling that i Will recess it in the floor somewhat.
Do you have links in your column? It goes between the pedals otherwise, I have no links just a std column and unsure if its going to be ok or if it get in the way of the feet, you can adjust the pedal area on some boxes



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Old 12-04-2019, 03:34 PM   #7
ilmung
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Hi Marcus ,
Thanks for the pictures .
Good remark concerning the steering comlumn :can you adjust the place of the pedals so that the steering column stays free and that you still have enough place for you foot ?
I assume that you bought the pedalbox for your mini , are the cylinders ok I mean not too big for the mini and can you regulate the bias for the rearbrakes very low ( as you do not need much braking for the rearside )

By the way : very nice work you have done with your mini !
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Old 12-04-2019, 09:04 PM   #8
Marcus Nordblom
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I have to space brake/clutch pedals the furthest apart setting, then the steering column goes through with no problem but it will get in the way somewhat if you do left foot braking

Just mocked it up with the std pedals in place so a bit hard to tell how it will work out, Im leaning to use the pedal box in my midget build instead

I have calculated it will push you further backwards then the normal setup. You can choose from a bunch of different masters and if the bias is not enough you can go with a Rear line adjuster on top

if you like I can take a pic for you with the pedals chucked in my mini, it will not be perfect but gives you an idea of size etc

cheers
//Marcus
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Old 13-04-2019, 08:49 PM   #9
ilmung
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Thanks for your reply , yes please send me some pictures of your pedal box .
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