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Discussion Starter · #1 ·
I am about to change my 748L biposto (Italian for "butt ugly" ?) to a mono. No, I do not think I will need tech advice, as I have a monoposto 748 to reference, but was wondering if anyone would want or need a how-to? If so, then let me know, and I can photograph the process and write up a how-to as I go. I will be retaining the subframe on this particular build, and can also discuss the mono v. bi subbie pros and cons, as well as cost of the project.
 

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Keeping the biposto subframe (weak!), you just need the mono latch pin, bracket, and maybe some spacers as I recall. And the mono tail and seat, of course.

To convert it the real way, you need the aluminum subframe, mono tail with latch/hardware, and the monoposto rear harness, which is a little longer.
 

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Discussion Starter · #5 ·
Keeping the biposto subframe (weak!), you just need the mono latch pin, bracket, and maybe some spacers as I recall. And the mono tail and seat, of course.

To convert it the real way, you need the aluminum subframe, mono tail with latch/hardware, and the monoposto rear harness, which is a little longer.
I am converting it with the bip subby, because of a few reasons.
1. There was never a 748L monoposto... all were biposto. Because of this, I will definitely be retaining all the parts to return it to a biposto. Getting another subframe means having to store the old unit in my limited space-garage.

2. The cost of getting a subframe really is not worth it to me, just to save a few lbs., and not see the front peg bung.

Is there a benefit to converting to a mono frame, other than these two reasons?


Good tech article. Thanks.
Like I said, I have a mono that I can reference off of, and already have the seat and cowl. I still have yet to get the hardware.
 

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If you use a bip subframe you’ll need to remove the rubber pillion supports and add 10mm spacers under the latching mechanism. If the vents still touch the steel supports you can fiddle the front hinge to get clearance. If you feel the need to go back and fourth between pillion and single cowl then be aware that you can do this but for that to happen you need to keep the rubber pillion bumps and the single cowl need to be lifted a good two inches. Which looks rather odd. Have fun.
 

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If you use a bip subframe you’ll need to remove the rubber pillion supports and add 10mm spacers under the latching mechanism. If the vents still touch the steel supports you can fiddle the front hinge to get clearance. If you feel the need to go back and fourth between pillion and single cowl then be aware that you can do this but for that to happen you need to keep the rubber pillion bumps and the single cowl need to be lifted a good two inches. Which looks rather odd. Have fun.
Unsure of what you mean ,, I was swapping from mono to bip regularly using the bip subframe. I can’t recall ever having to lift the cowl 2inches , & I never removed any rubber pillion supports.

I’m not questioning your knowledge, as I said , I’m unsure of what you mean.
 

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Unsure of what you mean ,, I was swapping from mono to bip regularly using the bip subframe. I can’t recall ever having to lift the cowl 2inches , & I never removed any rubber pillion supports.

I’m not questioning your knowledge, as I said , I’m unsure of what you mean.
Yeah. Might just have to delete my post. Think I’m off with the fairies:):)
Did did a conversation just last week and This is what I had to do. And on the other 4-5 conversation I’ve done over the years on steel subframes.
 

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Yeah. Might just have to delete my post. Think I’m off with the fairies:):)
Did did a conversation just last week and This is what I had to do. And on the other 4-5 conversation I’ve done over the years on steel subframes.
I’m still none the wiser Rob

I’ve had 2 different mono seat cowls & never removed anything off the stock subframe.
Maybe the tails are sitting incorrectly, I don’t know.

 

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I’m still none the wiser Rob

I’ve had 2 different mono seat cowls & never removed anything off the stock subframe.
Maybe the tails are sitting incorrectly, I don’t know.

It’s got me beat Nick. It’s the way I’ve always done it.
 

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one question, if I put monoposto tail to biposto, do I also need different seat (I mean seat/leather/neopren part/) ? as monoposto one looks longer
 

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Discussion Starter · #14 ·
one question, if I put monoposto tail to biposto, do I also need different seat (I mean seat/leather/neopren part/) ? as monoposto one looks longer
As Nikk11 stated, the biposto does not go all the way up, like the mono does. I personally think it looks weird, but it will fit. I've seen a few of them set up this way.
 

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Discussion Starter · #15 ·
It’s got me beat Nick. It’s the way I’ve always done it.
This is the only pic I have of the underside of the tail
Vent mesh still to fit.

Did your vent screens come with the cowl? I bought an aftermarket cowl, and do not think it has the screens included (has not arrived yet). If not, do you remember where you got them from?
 

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Discussion Starter · #16 ·
Yeah. Might just have to delete my post. Think I’m off with the fairies<img src="http://www.ducati.ms/forums/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" /><img src="http://www.ducati.ms/forums/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />
Did did a conversation just last week and This is what I had to do. And on the other 4-5 conversation I’ve done over the years on steel subframes.
I’m still none the wiser Rob

I’ve had 2 different mono seat cowls & never removed anything off the stock subframe.
Maybe the tails are sitting incorrectly, I don’t know.


Oh my gosh, that is sexy as hell! I love the color scheme!
??
 

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Did your vent screens come with the cowl? I bought an aftermarket cowl, and do not think it has the screens included (has not arrived yet). If not, do you remember where you got them from?
Both of my cowls were aftermarket & did not come with the mesh ... I made mine out of micro mesh. I got it from a fab shop that makes security screen doors.

Oh my gosh, that is sexy as hell! I love the color scheme!
??
It’s a pity I crashed it
 

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Discussion Starter · #18 ·
Did your vent screens come with the cowl? I bought an aftermarket cowl, and do not think it has the screens included (has not arrived yet). If not, do you remember where you got them from?
Both of my cowls were aftermarket & did not come with the mesh ... I made mine out of micro mesh. I got it from a fab shop that makes security screen doors.

Oh my gosh, that is sexy as hell! I love the color scheme!
??
It’s a pity I crashed it
Sucks about the bike.... it sure was gorgeous!
Thanks for the tip... I am probably going to have to do that, myself. I want the mesh pattern as close to original as possible, and had looked into filter screen material, but was afraid that it would be too flimsy.
 

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Sucks about the bike.... it sure was gorgeous!
Thanks for the tip... I am probably going to have to do that, myself. I want the mesh pattern as close to original as possible, and had looked into filter screen material, but was afraid that it would be too flimsy.
The micro mesh is pretty good , as I said it’s for security screens ,, pity I could only get it in black at the time .. but I wasn’t fussed about it.

Don’t worry about the bike ,, she’s still gorgeous >:)
 

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Concerning the hardware needed for the conversion, the stuff on the subframes doesn’t matter so much. It’s the brackets on the tail that are different. Between a mono tail on bi sub, bi tail on a bi sub and a mono on a mono sub, all three brackets are different depending on the application.


Btw, I have the hardware available to install a mono tail on a bi sub....
 
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