Original E61 group cam differences

#1: Post by **ertech** » January 5th, 2016, 11:02 pm

Hi guys
Trying to rebuilt the group
Received 2 different cams one with and one without pin at the end . The problem is the lobe is bigger than my original one. I am sure I have the correct one since I compared with someone local who has the same machine.
Anyone knows where I can source an original one.
The bigger one binds
Thanks
Erick

January 6th, 2016, 1:29 pm

Have you tried Faema or Café Union on Jean Talon West, or Espresso Mali on St-Laurent, all within a very short distance from each other?

January 6th, 2016, 2:25 pm

Yes even espresso mali
You have a E61?

January 6th, 2016, 7:46 pm

Yes I do have an E61 Izzo Alex Duetto III that was purchased at Chris' Coffee. Maybe they might have a suggestion.

Looking at your interests, might you know someone with a machine shop that could make one?

I'd be glad to help if I can think of anything...

January 6th, 2016, 9:44 pm

Yes but if I bring my worn one there they will replicate it
So I wont have the right measurement
Send me a pm. Would be great to have a coffee
I live in TMR

http://users.rcn.com/erics/ · #6: Post by **erics** » January 6th, 2016, 10:07 pm

https://www.espressoparts.com/parts/com ... ad-cam-rod

But you really need to develop a "bucket list" as shipping can be expensive for single parts.

January 6th, 2016, 10:45 pm

Thanks Eric
Was told by Ryan at espresso parts that with or without pin measures the same. My cam is smaller
The bigger one binds

http://users.rcn.com/erics/ · #8: Post by **erics** » January 6th, 2016, 11:15 pm

Well, . . . OK.

It seems as though you need a cam that does NOT have the pin extension UNLESS you have a machined hole in the cam housing. The larger extension of the cam (your original part?) simply serves as a spacer to properly position the cam with respect to the brew valve and pre-infusion valve.

Take some pics and measurements of your cam housing diameter and I can measure mine. Also measure the length of your valves.

January 7th, 2016, 2:40 pm

Here are the measurements
The housing is 27mm
Thanks

http://users.rcn.com/erics/ · #10: Post by **erics** » January 8th, 2016, 9:12 am

I took measurements of a Quickmill Anita fitted with a standard E-61 grouphead. Considering the cam to be a modified oval, the following applies:

Major Diameter = 20.32 mm
Minor Diameter = 17.15 mm
Housing Bore = 28.20 mm

On previous measurements I made, the cam lifts the brew valve 1/16" or approximately 1.60 mm.

What exactly is "wrong" with the original cam you have?