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Re: Flat slide Mikuni TM [Re: Allan Gill] #520868
12/31/13 1:10 pm
12/31/13 1:10 pm
Joined: Oct 2012
Posts: 3,467
Running from demons in WNY
Hillbilly bike Offline OP
BritBike Forum member
Hillbilly bike  Offline OP
BritBike Forum member
Joined: Oct 2012
Posts: 3,467
Running from demons in WNY
The throttle was an original old dual cable unit. I had to modify the cable spool stop so it would twist a bit more.But it was still light on travel. My rider complained about the excessive twist, so I changed things. Now it's a single cable throttle with a splitter and a 1/4 turn twist throttle.
The splitter was advertised as having enough travel for bigger carbs....NOT....More modifications. The slides actually top out on the carb lids just a hair before totally clearing the throttle bore.... I'm thinking the slides need to be totally clear of the throttle bore for full air flow.
I do enjoy making up my own cables.......


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...
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Re: Flat slide Mikuni TM [Re: NickL] #523307
01/16/14 4:10 pm
01/16/14 4:10 pm
Joined: Oct 2012
Posts: 3,467
Running from demons in WNY
Hillbilly bike Offline OP
BritBike Forum member
Hillbilly bike  Offline OP
BritBike Forum member
Joined: Oct 2012
Posts: 3,467
Running from demons in WNY
Ok,taking my thread back grin

I cried to my rider and he is buying a set of Mikuni 34 MM TM's for the bike..... cry

And the question...Anyone have a ball park jetting sizes ?

I found a close bike shop with an older Dyno-Jet. He says I can do brief full throttle runs but it's not like the Mustang Dyno we used last year that the bike can be run wide open for one minute...


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...
Re: Flat slide Mikuni TM [Re: Hillbilly bike] #523361
01/16/14 10:54 pm
01/16/14 10:54 pm
Joined: Jan 2008
Posts: 1,113
Noblesville, IN
Jack Adams Offline
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Jack Adams  Offline
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Joined: Jan 2008
Posts: 1,113
Noblesville, IN
Hillbilly, I haven't run them on a 650,so the best I can do is say I would expect the jet sizes to be close to what you were running in the Amals,with the only big difference being the pilot which is usually smaller than you would expect. I thinking a 20 or 25. Jack

Re: Flat slide Mikuni TM [Re: Hillbilly bike] #523389
01/17/14 5:16 am
01/17/14 5:16 am
Joined: Apr 2005
Posts: 2,380
Bega NSW Australia
Mark Parker Offline
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Mark Parker  Offline
BritBike Forum member
Joined: Apr 2005
Posts: 2,380
Bega NSW Australia


This might get you close, the 38s jetting was close for my BSA.


mark
Re: Flat slide Mikuni TM [Re: Hillbilly bike] #523680
01/19/14 12:48 pm
01/19/14 12:48 pm
Joined: Oct 2009
Posts: 454
new jersey usa
P
pushrod tom Offline
BritBike Forum member
pushrod tom  Offline
BritBike Forum member
P
Joined: Oct 2009
Posts: 454
new jersey usa
HB Sorry I didn't get back sooner. If you are still going with the TM's here are my jets etc.
NJ Q-2
N 6DH7
M 210 - 250
P smallest I could get. 12.5 I think. Mine runs best with the air adjustment screws removed.
Hopefully I will be ready for the first meet. My stuff is still all apart! PRT

Re: Flat slide Mikuni TM [Re: pushrod tom] #523762
01/19/14 6:08 pm
01/19/14 6:08 pm
Joined: Oct 2012
Posts: 3,467
Running from demons in WNY
Hillbilly bike Offline OP
BritBike Forum member
Hillbilly bike  Offline OP
BritBike Forum member
Joined: Oct 2012
Posts: 3,467
Running from demons in WNY
Tom, that's BSA jetting for dual TM 34's? grin Thanks,the info you and Jack gave will get me close.

My bike is together and running well with the Amals. But I don't know if it'll be tuned properly with the Mikunis for the first meet. My rider pays for the bulk of expenses but he's gotten into road racing, money for lSR is tight. But we will be there. Look forward to seeing you...


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...
Re: Flat slide Mikuni TM [Re: Hillbilly bike] #523788
01/19/14 9:04 pm
01/19/14 9:04 pm
Joined: Oct 2009
Posts: 454
new jersey usa
P
pushrod tom Offline
BritBike Forum member
pushrod tom  Offline
BritBike Forum member
P
Joined: Oct 2009
Posts: 454
new jersey usa
Yup, that's what I'm using. Can't say for sure if that's what yours wants but the 'standard' set up is unsuitable.
Just found out I may have a schedule conflict for May. If so, will shoot for June. PRT

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