EFM Auot Clutch Update

Energy One
Little-Boo

Little-Boo

Well-Known Member
Troop Supporter
Well sometime ago December I guess I ordered me a EFM Auto Clutch and told you all that I would keep you posted on the install and performance of said Animal. I installed it a couple of weeks ago but the rain would not let test it (My dog hates rain). Anyway my first try did not go to good as it slipped bad. I had to rev up to 3000 rpms to get the dog going and it sounded like a race car trying to leave the line with a 3000 stall converter on a trans-brake. I had to make some fine tune adjustments. I replace one of the steels in the clutch basket from a 1/16 thickness to a 5/16 and that did the trick. The other adjustment that is required is the push rod has to be out about 2 turns. I didn't like the two turns and went with a 1 1/4 instead. The bike idles at 1000 like most and when I release the clutch lever in 1st and even 2nd gear it will stay put no movement forward at all. As soon as i get about 1200 rpms I am moving and if I nail it just a little we are gone :D I like it and I will keep it :lol:. I tried to 2 and 3rd gear burn out and it worked. All I did was twist the throttle a little and rear tire was screaming for help, I did like it :lol: I don't like burn outs, just wanted make sure the video was not pulling my leg. :lol:

So all I can say is that it worked great for me, I hope it does the same for anyone else who may be interested in a EFM clutch. :2thumbs:



Carlos :whoop:
 
New Boots

New Boots

Human
That clutch sweet :2thumbs: Is this the one you got? Complete Stock Assembly Big Twin, No Exchange Required $ 995 :cheers:
 
Cshores

Cshores

Member
How many hours were required to install the EFM? How many hours to fine tune? I am curious to know because really like the idea of getting one but have to consider expense I am not probably qualified to install it.
 
Little-Boo

Little-Boo

Well-Known Member
Troop Supporter
Cshores said:
How many hours were required to install the EFM? How many hours to fine tune? I am curious to know because really like the idea of getting one but have to consider expense I am not probably qualified to install it.
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Being that I have an open primary it only took about one hour to take off with all that red loctite :bang:. I had to ship my clutch (Complete) to him. He uses all of your clutch pack and basket to retrofit his pressure plate. If I don't like it at a later date all I do is install my old pressure plate and I am back to where I was less 650 buck :lol:. Its a very clever idea the way this thing works, I like it especially when you are in traffic.

It took me about a hour total to fine tune it. All I had to do was remove the outer bearing support on the open primary and pressure plate. I replaced the first clutch steel plate (a 1/16th) and replace it with a 5/16. Reassemble and adjust the clutch. That was it I rode for about 15 minutes and came home (rain was about 5 minutes behind me). I took me about 2 seconds to smoke the tires in 2nd and 3rd gear :lol:.

I mentioned before that my wife's trike has a ReKluse Auto clutch and it works in the same manner as this one. I have cruised in the down town area in 1st and second gear without ever using the clutch lever on the trike and I am sure I will be able to do the same with the dog if it ever stop raining :bang:


My current project is on its was and that is to cam the FatBoy and get er going faster :2thumbs:

Carlos :whoop:
 
Little-Boo

Little-Boo

Well-Known Member
Troop Supporter
oldmutt said:
Carlos:
Did you have them rework your clutch or did you buy a complete new one?
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He has to do his magic with you clutch basket to fit the pleasure plate, so you have to send in your clutch basket complete with clutch pack. Basically all he is selling you is an auto pressure plate that will work with what you have on your bike.

Carlos :whoop:
 
Five Five

Five Five

Well-Known Member
Forgive me for not knowing :confused: but how does it work...do you still have to use the clutch lever or not :confused: is it like a centrifugal clutch ? like the ones used on mini bikes back in the day... is it a performance upgrade providing better lockup... or is it just an aid to assists in engage and dis-engage of the clutch lever ?
 
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Little-Boo

Little-Boo

Well-Known Member
Troop Supporter
Five Five said:
Forgive me for not knowing :confused: but how does it work...do you still have to use the clutch lever or not :confused: is it like a centrifugal clutch ? like the ones used on mini bikes back in the day... is it a performance upgrade providing better lockup... or is it just an aid to assists in engage and dis-engage of the clutch lever ?
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To me it's a better lockup. You need to make sure you start the bike in neutral and use the clutch lever to put it in 1st gear. Once in gear you can shift by apply in pressure on the shift lever and let off the throttle some. If you want to use the lever you can. It will not stall when you stop even if you don't use the lever, and it will not stall when you take off. You will need to use the lever to get it back in 1st and once you do you can release the lever when you are ready to move just give it the gas and you are gone. When you down shift or after you down shift if you give it a little throttle it will engine brake as if you had the regular clutch. Yes its like a centrifugal clutch that is why the push rod has to be 1 1/2 to 2 turns out. I liked mine better at 1 1/4 turn out and so far it hooks up really good.

Carlos :whoop:
 
Five Five

Five Five

Well-Known Member
Little-Boo said:
To me it's a better lockup. You need to make sure you start the bike in neutral and use the clutch lever to put it in 1st gear. Once in gear you can shift by apply in pressure on the shift lever and let off the throttle some. If you want to use the lever you can. It will not stall when you stop even if you don't use the lever, and it will not stall when you take off. You will need to use the lever to get it back in 1st and once you do you can release the lever when you are ready to move just give it the gas and you are gone. When you down shift or after you down shift if you give it a little throttle it will engine brake as if you had the regular clutch. Yes its like a centrifugal clutch that is why the push rod has to be 1 1/2 to 2 turns out. I liked mine better at 1 1/4 turn out and so far it hooks up really good.

Carlos :whoop:
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Thanks Carlos ... I want one now :up:
 
bruce

bruce

Active Member
who's open primiary do you have, I have been thinking about get this I have a 4" karata. also I was told the clutch lever would be much easier to pull is this true.

thanks in advance Bruce
 
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Little-Boo

Little-Boo

Well-Known Member
Troop Supporter
bruce said:
who's open primiary do you have, I have been thinking about get this I have a 4" karata. also I was told the clutch lever would be much easier to pull is this true.

thanks in advance Bruce
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I have the Baker open primary. The clutch is a one finger pull once you are rolling. Say going to second and on up you can pull with ease :2thumbs:

Carlos :whoop:
 
karata

karata

Member
Knowledge Base:

bruce said:
who's open primiary do you have, I have been thinking about get this I have a 4" karata. also I was told the clutch lever would be much easier to pull is this true.

thanks in advance Bruce
Click to expand...
EFM AutoClutch
Gary Buzzelli
330-947-1700
Gary has made his pressure head for all of the karata BigDog Belt Drive Systems 4 years ago.
You can send EFM your rear pulley less the pressure head,springs,spring retainers and (6) 1/4X28 SCB that secure the spring retainers.You can also remove the 6 stands,they will be replaced with (6) 5/16X18X.625" SCB that attach the 30 tooth aluminum inner hub to the one piece steel inner hub.
EFM will supply the new pressure head and you are set to go.
 
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