GL 1500 exhaust collector


Information and questions on GL1500 Goldwings (1988-2000)
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agedbikeman
Posts: 274
Joined: Tue Jun 18, 2019 3:41 pm
Location: Bruay la Buissiere, France
Motorcycle: 1995 GL1500 Aspencade with bolt on trike kit, made by Kit Trike Portugal.
2014 Can-Am Spyder RT(sold, glad to see the back of it)

GL 1500 exhaust collector

Post by agedbikeman »



Further to my last post on this subject, I got fed up with buying second hand collectors that were as rusty as what I already had, lets face it, they're all old now. BUT I think I've found the answer.
Worried that buying the Black Widow aftermarket version for 200GBP I would need ear plugs, I found the identical one on Amazon for only 96GBP and thought well if it's too noisy I've not wasted too much, so I bit the bullet and bought one.

This is it
This is it

And then I thought what if I put Baffles down the tubes, as it's just plain empty pipes

Like this one
Like this one

Then I thought again, I've got the Black Widow mufflers that have extension tubes between the collector and the mufflers, so I ordered 2 appropriate baffles and fitted them in the said tubes by drilling a hole in the side of the extension tube and screwed them in place so they don't move

Baffle fitted in the extension tube
Baffle fitted in the extension tube

Well I have to say if it is quiet enough for me it'll be quiet enough for anyone else, I DON'T ride noisy bikes.

I'm no genius, ( well not much of one) I can't believe no one else has done this before me, surley this must be the answer to the collector problem that we're all having or waiting to happen, the whole exhaust is stainless steel and damned quiet in the bargain.

Anyone interested in copying what I've done I'm happy to share more photos with you

Alex
Find This Item on Amazon:


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blupupher
Posts: 785
Joined: Sun May 17, 2020 5:47 pm
Location: Katy, Republic of Texas
Motorcycle: 2013 BMW K1600GT

Re: GL 1500 exhaust collector

Post by blupupher »

did you any exhaust batting? That would make them even quieter if not
Current ride: 2013 BMW K1600GT

Former rides: 2002 GL1800A, 2001 CB750, 1994 GL1500 SE, 1994 VT1100C , 1984 VF500F, 1982 CB750C, 1982 GS250T, 1981 CB900C, 1978 CB125s, 1976 TS185
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agedbikeman
Posts: 274
Joined: Tue Jun 18, 2019 3:41 pm
Location: Bruay la Buissiere, France
Motorcycle: 1995 GL1500 Aspencade with bolt on trike kit, made by Kit Trike Portugal.
2014 Can-Am Spyder RT(sold, glad to see the back of it)

Re: GL 1500 exhaust collector

Post by agedbikeman »

Sorry don't understand exhaust batting?
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blupupher
Posts: 785
Joined: Sun May 17, 2020 5:47 pm
Location: Katy, Republic of Texas
Motorcycle: 2013 BMW K1600GT

Re: GL 1500 exhaust collector

Post by blupupher »

Fiberglass packing for exhaust.

https://www.amazon.com/gp/product/B099N ... UTF8&psc=1

Helps quiet down noisy exhausts
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Current ride: 2013 BMW K1600GT

Former rides: 2002 GL1800A, 2001 CB750, 1994 GL1500 SE, 1994 VT1100C , 1984 VF500F, 1982 CB750C, 1982 GS250T, 1981 CB900C, 1978 CB125s, 1976 TS185
FM-USA
Posts: 3383
Joined: Wed May 18, 2011 8:40 am
Location: Near 60031
Motorcycle: 91-i

Re: GL 1500 exhaust collector

Post by FM-USA »

Fiberglass matt/batting will go on the outside of the baffle leaving the inside open.
I'd suggest fill the down-side (away from the engine) of the baffle 1/4 its length.
Point is it vary the back pressure and give another different pressure wave to reenter the inner chamber thus canceling a few more sound wave tones.
Through the acceleration you'll hear different WOW's/Rumbles but hopefully not at the RPM's you want to cruise steady at.
With this design you can vary the packing length and density if your cruise tone is uncomfortable.
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ct1500
Posts: 1608
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
Contact:

Re: GL 1500 exhaust collector

Post by ct1500 »

I would suggest doing a complete write-up in the DIY subsection. :D
Local and need repair help with your 1500, Valkyrie or ST please click contact
Nothing leaves my shop till its' perfect
This is what I do
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agedbikeman
Posts: 274
Joined: Tue Jun 18, 2019 3:41 pm
Location: Bruay la Buissiere, France
Motorcycle: 1995 GL1500 Aspencade with bolt on trike kit, made by Kit Trike Portugal.
2014 Can-Am Spyder RT(sold, glad to see the back of it)

Re: GL 1500 exhaust collector

Post by agedbikeman »

Thanks for the explanaiton of BATTING, I did not know that as this is the first exhaust in my life I have had to play with, I will experiment with it as you have suggested to hear the difference, even though it sounds very quiet already, also I will do a write up in the DIY section, meanwhile I hope many people read this especially those in need of a new collector, anyone can PM me for more info.

Hope this benefits many riders

Alex
FM-USA
Posts: 3383
Joined: Wed May 18, 2011 8:40 am
Location: Near 60031
Motorcycle: 91-i

Re: GL 1500 exhaust collector

Post by FM-USA »

I have a design for the 1500 collector replacement... BUT it's too cold in the unheated garage.
It's design is tune-able... I hope. Also the designed installation 'should be' (95% positive) easy enough to not loosen one exhaust header, HUGE PLUS. Won't know all this until the prototype is made.
My design is nothing like what's been made mainly due to the location. Motorcycles always seems to need special designs. :roll:

.

.
PowerSlave
Posts: 24
Joined: Mon Aug 30, 2021 11:11 am
Location: West Lorne, Ontario, Canada
Motorcycle: 1994 GL1500

Re: GL 1500 exhaust collector

Post by PowerSlave »

Do you have links for amazon for the parts?

I just had one of the posts rust off my collector and am looking at options for replacing it. I was able to elongate the mounting bolt hole and clamp the muffler on what was left of the post. Hope it lasts until I can get a replacement.
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agedbikeman
Posts: 274
Joined: Tue Jun 18, 2019 3:41 pm
Location: Bruay la Buissiere, France
Motorcycle: 1995 GL1500 Aspencade with bolt on trike kit, made by Kit Trike Portugal.
2014 Can-Am Spyder RT(sold, glad to see the back of it)

Re: GL 1500 exhaust collector

Post by agedbikeman »

Hi
This is the link to Amazon USA
Hope it helps, you should also find this on Ali Express.
Let me know how you get on


https://www.amazon.com/Motorcycle-Exhau ... 12&sr=8-46

Regards
Alex
Find This Item on Amazon:
Graham B
Posts: 22
Joined: Wed Nov 07, 2012 3:59 pm
Location: Tenterden, England, United Kingdom
Motorcycle: GL1500SE

Re: GL 1500 exhaust collector

Post by Graham B »

Please write this up as a "How to" so we can find it again when we need it.
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Fatboy46
Posts: 148
Joined: Sat Jul 04, 2015 8:16 am
Location: DFW Texas
Motorcycle: 1997 Goldwing 1500 Aspencade with Roadsmith Trike kit

Re: GL 1500 exhaust collector

Post by Fatboy46 »

THANKS!!! ordered one for 'just in case" !!
Windydown
Posts: 1
Joined: Sun Sep 06, 2015 2:06 am
Location: Dorset
Motorcycle: 1992 GL1500 SE
1964 Honda 250 C72 Dream

Re: GL 1500 exhaust collector

Post by Windydown »

Thanks for this advice, I had purchased the same exhaust set up and had found it too noisey.
I have followed your advice and fitted a similar baffle, but I fitted it the other way around, with the wider part of the baffle in first so it came up against the bend, so no drilling.
Black Widow have an additional baffle that fits at the front end of the muffler, they supplied one when I spoke to them saying thier muffler was too noisey.


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