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 TBS Vs Thruxton Needles
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Joined: Apr 2007
Posts: 165
Adjunct
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OP
Adjunct
Joined: Apr 2007
Posts: 165 |
I got some good advice from you all a little while ago regarding my mods. The plan is to add the freak and Pingel Petcock to the Thunderbike pipes and removed AI on my 03 Speedy. The consensus was 150 mains, 45 pilots and the TBS needles-no shims. I dont have ready access to the TBS needles but the kit from Jenks bolts has Thruxton Needles. How will this change affect the size of the mains and pilots? 
...yes, that is a single seat...no, I will not put the other seat on...yes, I am selfish...yes, you should buy your own bike
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Re: TBS Vs Thruxton Needles
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Joined: Jan 2006
Posts: 3,606 Likes: 2
Loquacious
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Loquacious
Joined: Jan 2006
Posts: 3,606 Likes: 2 |
thruxton needles run richer so a drop in main size would be in order
THE VOICE OF REASON
per: Stewart
AF&AM/Shriner/Scoutmaster
130/45 TBS 2shim SS Uni 18/42
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Re: TBS Vs Thruxton Needles
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Joined: Jan 2005
Posts: 9,223
Big Bore
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Big Bore
Joined: Jan 2005
Posts: 9,223 |
You can see the difference in the three needles and that the Thruxton has a more radical taper.  Dealers should have the TBS needles. Give Palm Beach Triumph or Pure Triumph a call. You'd probably get them in the same time as the Jenks.
"Never underestimate the power of human stupidity" - Robert Heinlein
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Re: TBS Vs Thruxton Needles
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Joined: Mar 2007
Posts: 5,616
Check Pants
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Check Pants
Joined: Mar 2007
Posts: 5,616 |
Do the needles have the same effect on the 865 motors or are they only beneficial for the 790s?
SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq
NEW: 19 Goldwing Tour DCT
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Re: TBS Vs Thruxton Needles
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Joined: Jan 2005
Posts: 6,308 Likes: 4
Worn Saddle
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Worn Saddle
Joined: Jan 2005
Posts: 6,308 Likes: 4 |
The 865 motors have different needles, as well as larger slide holes in the carbs. I believe they are pretty close to the Thruxton needles. I would need to see the numbers on them to be sure though.
A word to the wise is not necessary. It is the stupid ones who need the advice.
Pat
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