Sports Mufflers

Discuss all things 1970 & later Airheads right here.
chasbmw
Posts: 765
Joined: Fri Aug 06, 2010 7:40 am
Location: Bath UK

Re: Sports Mufflers

Post by chasbmw »

Long thread on the Jim Cray silencers on Advrider including some contact details for Jim and dyno charts which show them adding around 5 bhp on a R100, otherwise take a look on my photo bucket site, same username as here.

Charles
Charles
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Replica 1070 R90/S (based on 82 RT)
1975 R90/6
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vanzen
Posts: 1438
Joined: Mon Aug 09, 2010 2:29 pm
Location: Hidin' in the Hills

Re: Sports Mufflers

Post by vanzen »

Garnet wrote:
vanzen@rockerboxer.com wrote:Am I to understand that "noise' will define a marketable and desirable product ?
Over on the V twin forum that is the ONLY criteria.
Are we there, yet ?

My paper file includes a copy of that Joe Minton article,

"Black-Tie Boxer", Joe Minton, Motorcyclist, August, 1984

as well as a couple of other "oldies but goodies" to include:

"Boxer Rebellion, A turned on twin for the K-bike for lunch bunch", Dexter Ford, Motorcyclist, March 1986

"BMW: The All Out Version. Mark Bengel has it his way", Joe Minton, Motorcyclist, January, 1985

and

"Project R80 PHB, One rider's BMW test bed, the "PHB" is for performance, handling and braking", Bob Price, Rider, April, 1989
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moosehead
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Joined: Tue Aug 03, 2010 7:57 am
Location: Canukstan...north of the checkerboard

Re: Sports Mufflers

Post by moosehead »

Been following the Jim Cray designed silencers over on ADV website.

I'm in need for a new set of "silencers" (seems like an oxymoron eh) for a 77RS. I was intriqued by the write ups on ADV re: Cray designed flowthrough silencers.

I was going to enquire at Keihan, who make them, but someone on ADV said that Jim Cray Engineering sells them direct and buying direct would leave a few bucks in Jim's pockets ordering direct from him. Does he have a website or such or just the old fashioned phone contact??
Retired from work....not life!
Deleted User 72

Re: Sports Mufflers

Post by Deleted User 72 »

moosehead wrote:Been following the Jim Cray designed silencers over on ADV website.

I'm in need for a new set of "silencers" (seems like an oxymoron eh) for a 77RS. I was intriqued by the write ups on ADV re: Cray designed flowthrough silencers.

I was going to enquire at Keihan, who make them, but someone on ADV said that Jim Cray Engineering sells them direct and buying direct would leave a few bucks in Jim's pockets ordering direct from him. Does he have a website or such or just the old fashioned phone contact??
Couldn't find a website but this may help...

http://www.ikent.co.uk/profile/300900/S ... gineering/
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boxertwinjeff
Posts: 389
Joined: Mon Feb 07, 2011 1:56 pm
Location: Cairns Qld, Australia.

Re: Sports Mufflers

Post by boxertwinjeff »

chasbmw wrote:Long thread on the Jim Cray silencers on Advrider including some contact details for Jim and dyno charts which show them adding around 5 bhp on a R100, otherwise take a look on my photo bucket site, same username as here.

Charles
got lost in your photos for awhile there Charley, great travel pics mate!, took me back
to my World travelling days in the early 80's.
1973 R1000/5 LWB
1976 R90S Silver Smoke
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SteveD
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Joined: Tue Aug 03, 2010 3:29 am
Location: Melbourne, Oz.

Re: Sports Mufflers

Post by SteveD »

These are the short megaphone types....

http://www.youtube.com/watch?v=LrpXR7Tk ... detailpage
Cheers, Steve
Victoria, S.E.Oz.


1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/R100RS
2006 K1200R.
1994 R1100GS.
moosehead
Posts: 463
Joined: Tue Aug 03, 2010 7:57 am
Location: Canukstan...north of the checkerboard

Re: Sports Mufflers

Post by moosehead »

Native /5 wrote:
moosehead wrote:
Couldn't find a website but this may help...

http://www.ikent.co.uk/profile/300900/S ... gineering/
Thanks Native/5, that's good contact info. Going to send a fax and see what's up. He's got quite a reputation in the UK!
Retired from work....not life!
Motorhead
Posts: 391
Joined: Mon Aug 09, 2010 8:30 pm

Re: Sports Mufflers

Post by Motorhead »

I'm useing Harley Mufflers Lotsa Growl
dwerbil
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Re: Sports Mufflers

Post by dwerbil »

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Click for pics
04 R1150RT ~ 78 R100/7 ~ 84 RS ~ 93 K1100RS ~ 65 R60/2
Randy in Round Rock
ME 109
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Location: Albury, Australia

Re: Sports Mufflers

Post by ME 109 »

Motorhead wrote:I'm useing Harley Mufflers Lotsa Growl
Are they still on a harley?
Lord of the Bings
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