Thanks for the reply your the first out of many posts Ive put out today It is a pipe engine. I called Quater Master which is Tomer, They had no info for me and said its extremely hard to get a hold of their tech Guy. lolThat seems kinda low for rpm .
That where we had the clutch come in .
Is it a pipe engine ?
Builder didn't advise on stall speed ?
Thanks for the reply your the first out of many posts Ive put out today It is a pipe engine. I called Quater Master which is Tomer, They had no info for me and said its extremely hard to get a hold of their tech Guy. lol
Heres a like to a you tube video of the track and the first race is the class im running KT light.That seems kinda low for rpm .
That where we had the clutch come in .
Is it a pipe engine ?
Builder didn't advise on stall speed ?
I dont know why it starts at the end just go to the beginingHeres a like to a you tube video of the track and the first race is the class im running KT light.
Flattop1 is spot on, that Yami will want the clutch at 10200 or more depending on the pipe. With a track that small you should never come off the pipe. That thing won't start to sing until you see 13,500. later Chuck.
Awesome thanks for your response I really appreciate it. Its the most helpful one yet. What are your thoughts on the bolts through the weights. Also I noticed all 6 allens were used to bolt the clutch together over the 3 they come set up with. The previous driver was around 200lbs im 125lbs. I've been told take every other bolt out of the weights. Im assuming the extra allens just add more rotating mass which in my book is smoother power to the ground but not as hard of a hit? And last This is a steel basket and is just showing signs of a little wear. Im going to file the minor notches smooth for this weekend. Quatar master could not even tell me if the new baskets were Alu or steel if fact they couldn't even tell me anything about this clutch as it looks nothing like the newer ones. Its it even a TD23? Thanks for taking the time DanThat is exactly right.
The key is the jackshaft ratio.
~3800 is pretty typical for a pipe Yamaha through a 2.71 ratio.
Tomar support is all but non-existent (or at least it has been since Quarter Master bought them out, and has only gotten worse since the 'Rona.)
Great clutches - we still work on quite a few of them each year.
-----
Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
32 years of service to the karting industry ~ 1Cor 9:24
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
Awesome thanks for your response I really appreciate it. Its the most helpful one yet. What are your thoughts on the bolts through the weights. Also I noticed all 6 allens were used to bolt the clutch together over the 3 they come set up with. The previous driver was around 200lbs im 125lbs. I've been told take every other bolt out of the weights. Im assuming the extra allens just add more rotating mass which in my book is smoother power to the ground but not as hard of a hit? And last This is a steel basket and is just showing signs of a little wear. Im going to file the minor notches smooth for this weekend. Quatar master could not even tell me if the new baskets were Alu or steel if fact they couldn't even tell me anything about this clutch as it looks nothing like the newer ones. Its it even a TD23? Thanks for taking the time DanView attachment 18306
I was just on Bullys website and saw they use a gold steel basket that looks Identical to mine, So Im guessing I have a Bully basket if thats possible and they interchange?That is exactly right.
The key is the jackshaft ratio.
~3800 is pretty typical for a pipe Yamaha through a 2.71 ratio.
Tomar support is all but non-existent (or at least it has been since Quarter Master bought them out, and has only gotten worse since the 'Rona.)
Great clutches - we still work on quite a few of them each year.
-----
Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
32 years of service to the karting industry ~ 1Cor 9:24
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
Awesome Thanks for the reply!Your going to want it too come in at 10,500 rpm .
Put it on , then see where its at .
Adjust from there .
Less weight more rpm .
More spring pressue more rpm .
And vice versa .
Keep the 6 bolts in there -- make sure they stay tight. You might consider using some Blue Loctite on the threads as bigger HP applications and jackshafts seem to take their toll on bolts vibrating loose.Awesome thanks for your response I really appreciate it. Its the most helpful one yet. What are your thoughts on the bolts through the weights. Also I noticed all 6 allens were used to bolt the clutch together over the 3 they come set up with. The previous driver was around 200lbs im 125lbs. I've been told take every other bolt out of the weights. Im assuming the extra allens just add more rotating mass which in my book is smoother power to the ground but not as hard of a hit? And last This is a steel basket and is just showing signs of a little wear. Im going to file the minor notches smooth for this weekend. Quatar master could not even tell me if the new baskets were Alu or steel if fact they couldn't even tell me anything about this clutch as it looks nothing like the newer ones. Its it even a TD23? Thanks for taking the time DanView attachment 18306
Over the last several yrs i have been running a totally different clutch setup than what 2-stroke pipe manufacturers call for.ill probably catch hell for my post but i use to run the 10,200-10,500 stall but i decided to think outside the box.i have a couple reasons for it.i run in 8500-9000 range for the fact of its easier on clutch during cautions and on slow restarts i can pull away.my lap times didnt change but the starts are so much more smooth,it keeps the back tires under u and moving you forward.and there is no more reving the heck out of the motor on cautions building heat in the clutch.hell at 8500 rpm my 116 cc open prob makes 25 hpThat kart flat rolls out when u hammer down.i actually learned the trick riding dirt bikes,instead of running second gear trying get the front tire over a log use 3rd and no clutch,it will grip a thousand times better.Keep the 6 bolts in there -- make sure they stay tight. You might consider using some Blue Loctite on the threads as bigger HP applications and jackshafts seem to take their toll on bolts vibrating loose.
Now, for the weight bolts:
Taking every other weight bolt out will raise the engagement rpm.
There is no way that we can tell you if that is correct or not without knowing if it engaged correctly prior to this, or at what rpm it engages currently.
I doubt that you want to raise the engagement rpm, but again, without more info that's going to be hard to determine.
Taking every other weight bolt out will also soften the engagement. More weight keeps the clutch engaged (limits slipping) at higher rpm when it should be fully locked up 1:1.
Yeah birky are the best clutches for a open 2 cycle,only weak link is the belt.if ya dont get it set right,and change belts often you will find yourself dropping out of races over broken belts.ya cant hardly wear the clutch out though.Thanks everyone for sharing, I'm in the process of getting a 131 Sudam up and running, when I bought it, it had a clutch on the jackshaft, totally my bad but I ran the engine last weekend without checking stall/set up and ended up smoking it, so I'm now going back to jackshaft/ clutch set up 101 and have picked up alot of great info from this thread...
Guess I am not the only one that thinks outside of the Box. Smart guy u r. Stay outside the box ul go far mybrotherOver the last several yrs i have been running a totally different clutch setup than what 2-stroke pipe manufacturers call for.ill probably catch hell for my post but i use to run the 10,200-10,500 stall but i decided to think outside the box.i have a couple reasons for it.i run in 8500-9000 range for the fact of its easier on clutch during cautions and on slow restarts i can pull away.my lap times didnt change but the starts are so much more smooth,it keeps the back tires under u and moving you forward.and there is no more reving the heck out of the motor on cautions building heat in the clutch.hell at 8500 rpm my 116 cc open prob makes 25 hpThat kart flat rolls out when u hammer down.i actually learned the trick riding dirt bikes,instead of running second gear trying get the front tire over a log use 3rd and no clutch,it will grip a thousand times better.