Pipe colonoscopy

Brandon Weiss (Detective brandon to you) /

I stuck one of those $15 USB inspection cameras down into this proma GP I bought to see how far the header protrudes into the chamber, rough measurements indicate about 2 inches.

Makes me want to cut into it so badly and get rid of it...but I know my cheap mig welder would blow holes right through the thin metal. I've been eyeing an AHP Tig for while now....

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(edited)

Re: Pipe colonoscopy

The dang things they do for homologation for street use...

If you have the use for a TIG anyhow this just might be the excellent excuse to get the dang thing...

Re: Pipe colonoscopy

Isn't Tig for aluminum ?

Re: Pipe colonoscopy

TIG can be used to fuse many different metals together as well as aluminium welding. More precise, better argon shielding and different electrode means you can dial it down and get more precision as well as weld very thin materials (even thin stuff to thick stuff).

> Marc Friedman Wrote:

> -------------------------------------------------------

> Isn't Tig for aluminum ?

Re: Pipe colonoscopy

Probably Fred /

Yes that’s the problem with all these aftermarket pipes, header too far in chamber (boss pipe is the worst), some pipes have a blob of wild inside of stinger blocking flow (Estoril, other inverted silencer pipes), if you remove that extra header it’s like night and day

A tecno boss will rev to the moon and have more power through the range after it’s fixed so will the GP so cut that header off (edited)

Re: Pipe colonoscopy

> Marc Friedman Wrote:

> -------------------------------------------------------

> Isn't Tig for aluminum ?

It can be, but it must be A.C. NOT D.C. output from welder. Aluminum requires a.c. for the fusing and cleaning actions of the alternating current. On heavy or large applications a water cooled tig torch will be needed, such as an automotive cylinder head. A good tig welder with experience can often fuse the two parent materials together without any filler rod. (edited)

Re: Pipe colonoscopy

I need to practice with it more but my ahp alphatig 201xd seems like a great quality machine for the price. I saved some with an eBay coupon too, those drop occasionally. The manual sucks but there's a buncha videos on youtube about dialing it in.

Re: Pipe colonoscopy

Brandon Weiss (Detective brandon to you) /

> jordan * Wrote:

> -------------------------------------------------------

> I need to practice with it more but my ahp alphatig 201xd seems like a

> great quality machine for the price. I saved some with an eBay coupon

> too, those drop occasionally. The manual sucks but there's a buncha

> videos on youtube about dialing it in.

That's the one i've been considering! $690 from AHP with all the basics except tungsten and gas.........and its considered the best entry level ac/dc capable tig out there. To get better features i'd have to spend around $1200-$1500 if i remember correctly

Re: Pipe colonoscopy

Brandon Weiss (Detective brandon to you) /

> Overpriced Parts Wrote:

> -------------------------------------------------------

> Yes that’s the problem with all these aftermarket pipes, header too far

> in chamber (boss pipe is the worst), some pipes have a blob of wild

> inside of stinger blocking flow (Estoril, other inverted silencer

> pipes), if you remove that extra header it’s like night and day

>

> A tecno boss will rev to the moon and have more power through the range

> after it’s fixed so will the GP so cut that header off

Do you know where I can find the link to that video where somebody cut open a boss and pulled out like a foot of header? Saw it awhile back

Re: Pipe colonoscopy

Jack Rutherford /

> Overpriced Parts Wrote:

> -------------------------------------------------------

> Yes that’s the problem with all these aftermarket pipes, header too far

> in chamber (boss pipe is the worst), some pipes have a blob of wild

> inside of stinger blocking flow (Estoril, other inverted silencer

> pipes), if you remove that extra header it’s like night and day

>

> A tecno boss will rev to the moon and have more power through the range

> after it’s fixed so will the GP so cut that header off

aw hell! whats best way to remove extra header?

Re: Pipe colonoscopy

> Brandon Weiss (Detective brandon to you)

> Do you know where I can find the link to that video where somebody cut

> open a boss and pulled out like a foot of header? Saw it awhile back

Cant find the video but I think it was the Metrakit MK3 pipe. The header does go in over a foot on those.

Re: Pipe colonoscopy

> Jack Rutherford Wrote:

> -------------------------------------------------------

> aw hell! whats best way to remove extra header?

I would think a sawzall would work nicely . ;)

Or , just an open end hacksaw .

Here's a handy little tool :

Re: Pipe colonoscopy

Re: Pipe colonoscopy

Hey look it me ^

Re: Pipe colonoscopy

Probably Fred /

The boss and other techno pipes don’t have a foot of header pipe in chamber but it can be 3 inches sometimes and like I said sometimes a blob of weld in the pipe by the stinger/silencer that blocks flow,

I think all these pipes should be inspected before they ship them out

Re: Pipe colonoscopy

Dirty30 Dillon /

> Overpriced Parts Wrote:

> -------------------------------------------------------

> I think all these pipes should be inspected before they ship them out

This is laughable. You think Tecnigas are gonna have someone inspect the internal welds on every $60 pipe they have produced you are out of touch.

As for the intrusion into the chamber, that is not a manufacturing defect, it is part of the design, one chamber for all bikes. That's why these pipes are $60-100.

Re: Pipe colonoscopy

Jack Rutherford /

> P D Wrote:

> -------------------------------------------------------

> > Jack Rutherford Wrote:

>

> > -------------------------------------------------------

>

> > aw hell! whats best way to remove extra header?

>

> I would think a sawzall would work nicely . ;)

>

> Or , just an open end hacksaw .

>

> Here's a handy little tool :

>

> https://images-eu.ssl-images-amazon.com/images/I/61iHGzOJxlL._AC_SS350_.jpg

ok I wasn't clear. Should I just saw off the header where it meets the chamber?

Re: Pipe colonoscopy

> Jack Rutherford Wrote:

> -------------------------------------------------------

> ok I wasn't clear. Should I just saw off the header where it meets the

> chamber?

Basically , yes .

If it were mine , I'd leave just enough to 'enter' the cone and be able to accept a decent weld .

Prior to welding the header in place , I might even chamfer/bevel the inside edge of the header end . That just to eliminate any unwanted waves . Not too sure if that would have much effect , but , it wouldn't hurt .

Re: Pipe colonoscopy

Jack Rutherford /

ok, I will locate Mr. Hacksaw

Re: Pipe colonoscopy

Probably Fred /

> Dirty30 Dillon Wrote:

> -------------------------------------------------------

> > Overpriced Parts Wrote:

>

> > -------------------------------------------------------

>

> > I think all these pipes should be inspected before they ship them out

>

> This is laughable. You think Tecnigas are gonna have someone inspect the

> internal welds on every $60 pipe they have produced you are out of

> touch.

>

> As for the intrusion into the chamber, that is not a manufacturing

> defect, it is part of the design, one chamber for all bikes. That's why

> these pipes are $60-100.

All aftermarket pipes even the 280$ Ones don’t fit either many times without mods,

After mock up they should put completed pipe against/or on the mock up frame,

Re: Pipe colonoscopy

Dirty30 Dillon /

> Overpriced Parts Wrote:

> -------------------------------------------------------

> > Dirty30 Dillon Wrote:

>

> > -------------------------------------------------------

>

> > > Overpriced Parts Wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > I think all these pipes should be inspected before they ship them

> out

>

> >

>

> > This is laughable. You think Tecnigas are gonna have someone inspect

> the

>

> > internal welds on every $60 pipe they have produced you are out of

>

> > touch.

>

> >

>

> > As for the intrusion into the chamber, that is not a manufacturing

>

> > defect, it is part of the design, one chamber for all bikes. That's

> why

>

> > these pipes are $60-100.

>

> All aftermarket pipes even the 280$ Ones don’t fit either many times

> without mods,

>

> After mock up they should put completed pipe against/or on the mock up

> frame,

You slay me.

Re: Pipe colonoscopy

Captain Janeway /

Would be nice if they at least checked a little on some of the more expensive pipes. A supposedly bolt on Weakends for an Urban had to be chopped all over to fit and I still have to fiddle with it. POS. I'll never buy another one of their pipes. Wouldn't have been as bad if they hadn't advertised the damned thing as bolt on.

Re: Pipe colonoscopy

Dirty30 Dillon /

> Captain Janeway Wrote:

> -------------------------------------------------------

> Would be nice if they at least checked a little on some of the more

> expensive pipes. A supposedly bolt on Weakends for an Urban had to be

> chopped all over to fit and I still have to fiddle with it. POS. I'll

> never buy another one of their pipes. Wouldn't have been as bad if they

> hadn't advertised the damned thing as bolt on.

That's classic. Each Weakendz pipe was made by hand by a couple dudes in a small shop. If you ordered hand made gloves do you think they would be exactly the same.

Re: Pipe colonoscopy

I always thought it was for legal purposes too. If the pipe goes into the chamber it's quieter. If you cut it then it's louder. If they sell it louder then they have to add a bunch of disclaimers and label it for off road use only.

Re: Pipe colonoscopy

i just put a proma GP on a ZA and took about 4" off the header to make it correct

bike still doesn't run right, think its faulty points or condenser so i cant say if it works better or not, its on the back burner right now.

i think the only reason they do it is that's just how long it comes of the bender and they don't bother to fuck with cutting it, plus obviously easier to weld that way.

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Re: Pipe colonoscopy

Dirty30 Dillon /

Yeah, it has nothing to do with homologation, almost all aftermarket pipes are not going to be approved by EURO/DOT

Re: Pipe colonoscopy

Brandon Weiss (Detective brandon to you) /

Neato. For now I threw on an mlm angle port magnum pipe onto the build because I got it for next to nothing, and it fit without modification. But when I get to mounting the proma I think I'll chop it right where you did Graham

Re: Pipe colonoscopy

yeah cut it right behind the weld, then cut it again right in front of the weld, there is a medium sized tube that goes in between them that you can slide forwards so you get two lap welds and a nice little taper transition. this pic was taken right before tack welding on the bike- then i remove and finish weld, duh.

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Re: Pipe colonoscopy

Nice,thank you.

Re: Pipe colonoscopy

Captain Janeway /
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> Dirty30 Dillon Wrote:

> -------------------------------------------------------

> > Captain Janeway Wrote:

>

> > -------------------------------------------------------

>

> > Would be nice if they at least checked a little on some of the more

>

> > expensive pipes. A supposedly bolt on Weakends for an Urban had to be

>

> > chopped all over to fit and I still have to fiddle with it. POS. I'll

>

> > never buy another one of their pipes. Wouldn't have been as bad if

> they

>

> > hadn't advertised the damned thing as bolt on.

>

> That's classic. Each Weakendz pipe was made by hand by a couple dudes in

> a small shop. If you ordered hand made gloves do you think they would be

> exactly the same.

Hey, there's just a little off and not even close. I wouldn't advertise as bolt on if it wasn't. Some pipes you know you'll have to chop, I wasn't expecting it with this one.

I burned through a ton of dremel bits trying to chop that giant effing header down. That first photo is after cutting off the inch or so with the original mounting holes. Don't know what bike they used as a prototype. (edited)

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