BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
  JWood Auction  
Home | Sponsors, Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons, "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Photo posting tutorial

Member Spotlight
Hoosier Daddy
Hoosier Daddy
Kendallville, IN - USA
Posts: 78
Joined: July 2012
Show All Member Profiles 
Shout Box
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Who's Online Now
219 registered members (68 royalstar tony), 1,781 guests, and 539 spiders.
Key: Admin, Global Mod, Mod
Newest Members
Brian Ellery, Jon Andrews, Berni Ernst, johnguppy, michael morgan
9955 Registered Users
Top Posters(30 Days)
btour 190
koan58 100
Stuart 84
NickL 67
Popular Topics(Views)
437,291 mail-order LSR
Forum Statistics
Forums33
Topics65,272
Posts632,167
Members9,955
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate This Thread
#245503 - 03/29/09 2:02 am Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar?  
Joined: May 2007
Posts: 89
lurkingclass Offline
BritBike Forum member
lurkingclass  Offline
BritBike Forum member

Joined: May 2007
Posts: 89
San Diego
I just got this carb, and I'm trying to ID it and find jetting info. It's 1 3/16" all the way through, no taper, and has a short bellmouth (like the Vincents) All I can come up with is a few books that reference it for use on early Vincent Black Lightnings and BSA Goldstars. Would it be an appropriate carb for a mildly built Triumph 650 with a single carb head? Any idea what kind of jet to start with? It's got a 370 main jet and a #6 slide. I know it's going to be trial and error, but I was hoping someone had some experience running one of these on a Triumph and could enlighten me on TT and GP carbs.


Support Your #1 BritBike Forum!
Membership Type! Free
Member
Premium
Member
Premium Life
Member
Vendor
Member
Site
Sponsor
Recognition No Premium Member Premium Life member (5 years) Vendor Member Site Sponsor Membership
Post commercial threads No No No Yes Yes
Custom title No Yes Yes Yes Yes
Upload avatar & photos No Yes Yes Yes Yes
Link avatar & photos Yes Yes Yes Yes Yes
Private Message Storage: 10 100 100 100 100
Length of signatures 255 600 600 600 600
Removes this very advert island between post 1&2 No Yes Yes Yes Yes
Price Free $12.90/year $105.00 No End
$55.00/5 years
$210.00/year
($17.50/month)
Email
Click on button >>
  Premium Member Premium Life member Vendor Member Site Sponsor Membership
#245506 - 03/29/09 2:20 am Re: Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar? [Re: lurkingclass]  
Joined: Oct 2004
Posts: 4,429
Tiger Offline
BritBike Forum member
Tiger  Offline
BritBike Forum member

Joined: Oct 2004
Posts: 4,429
Melbourne Australia
I have ridden both a Goldie and a Velo Thruxton fitted with GP carbs, both excercises reinforced the carbs reputation of being not so easy to start and idling being pretty much nonexistent.

If the GP is in good nick maybe put it on Fleabay, folks who must have original pay significant money for GPs.


1969 TR6R
7.62 x 51 is not a maths puzzle.
#245514 - 03/29/09 3:33 am Re: Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar? [Re: Tiger]  
Joined: May 2007
Posts: 89
lurkingclass Offline
BritBike Forum member
lurkingclass  Offline
BritBike Forum member

Joined: May 2007
Posts: 89
San Diego
What exactly is it that makes them hard to start and not idle? What is the benefit of this carb vs. say, a 930? Is there any books or manuals out there that cover these carbs? Thanks.

#245613 - 03/30/09 12:42 am Re: Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar? [Re: lurkingclass]  
Joined: Mar 2005
Posts: 82
beagleplex Offline
BritBike Forum member
beagleplex  Offline
BritBike Forum member

Joined: Mar 2005
Posts: 82
Some of the BSA A10's had those and would be similar jetting to your Triumph. Why not give it a try?

#245865 - 03/31/09 1:34 pm Re: Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar? [Re: beagleplex]  
Joined: Mar 2005
Posts: 731
ca7a Offline
BritBike Forum member
ca7a  Offline
BritBike Forum member

Joined: Mar 2005
Posts: 731
Asheville, North Carolina
First off, this is a TT carb, not a GP. As such, it has an idle circuit and is more tractable than the GP.
The 1960 BSA Super Rocket and Spitfire were both fitted with a 1-5/32" TT9, using a 410 main jet, a 7 slide, and the jet needle in the 4 position. A .109 needle jet was used. The slide and jet you have are enough to get started with.
David

#245922 - 03/31/09 7:43 pm Re: Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar? [Re: ca7a]  
Joined: Apr 2006
Posts: 1,395
johnm Online content
BritBike Forum member
johnm  Online Content
BritBike Forum member

Joined: Apr 2006
Posts: 1,395
New Zealand
If it works- and most times it doesnt - these links should take you to GP and TT specification sheets which are on Panics (Victory library) website

http://victorylibrary.com/brit/TT-c.htm

http://victorylibrary.com/brit/GP-c.htm

#246162 - 04/02/09 2:40 am Re: Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar? [Re: johnm]  
Joined: May 2007
Posts: 89
lurkingclass Offline
BritBike Forum member
lurkingclass  Offline
BritBike Forum member

Joined: May 2007
Posts: 89
San Diego
That's some really great info- thanks. I saved the all those pages. I just happened to pick up a "Tuning for Speed" by PE Irving from the 60's and it has all kinds of info on the TT and GP carbs too. It seems like a pretty good carb, but the choke is missing. Should I try to hunt one down?

#246172 - 04/02/09 3:23 am Re: Amal 10TT9 (1 3/16") carb- Vincent Black Lightning? Goldstar? [Re: lurkingclass]  
Joined: Aug 2001
Posts: 1,875
Ron - in California R.I.P. Offline
In Remembrance
Ron - in California R.I.P.  Offline
In Remembrance

Joined: Aug 2001
Posts: 1,875
California
Both the GP and TT carbs have an idle circuit with a low speed mixture screw. They do NOT have a throttle stop as they are considered racing carbs. The rules in that day required that the engine to stop running when the throttle was closed. Making either of these carbs idle is simple, by either drilling a small hole in the slide or filing a notch.

OK, a number 7 side is VERY lean, which suggests this carb was used with a megaphone, a richer slide would be needed for use with a silencer.

Most starting problems were either operator error or ignition related.

Cheers..!!

Ron


Moderated by  Alan_nc 


Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.069s Queries: 15 (0.023s) Memory: 0.8428 MB (Peak: 1.0195 MB) Zlib disabled. Server Time: 2017-11-21 13:48:17 UTC