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Valve Spring Compressor #574794
12/02/14 5:20 pm
12/02/14 5:20 pm
Joined: Jun 2014
Posts: 31
Ohio,USA
Alan Lonneville Offline OP
BritBike Forum member
Alan Lonneville  Offline OP
BritBike Forum member
Joined: Jun 2014
Posts: 31
Ohio,USA
I need some recommendations for a good, heavy duty valve spring compressor. So far I've stripped the threads out of one(Triumph Wholesaler) and bent (Pit Posse)the other. These are not stock Triumph springs I'm using either.
I'm guess maybe I'll have to take the time and fabricate one myself.
What's everyone else using?
Thanks!
Alan

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Re: Valve Spring Compressor [Re: Alan Lonneville] #574797
12/02/14 6:05 pm
12/02/14 6:05 pm
Joined: Aug 2011
Posts: 416
OZ
O
Old Cafe Racer Offline
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Old Cafe Racer  Offline
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O
Joined: Aug 2011
Posts: 416
OZ
This what I use,simple,sturdy and complete control.

[img]http://www.triumphrat.net/members/albums...0-p1040067.html[/img]

[img]http://www.triumphrat.net/members/albums...2-p1040066.html[/img]

davy

Re: Valve Spring Compressor [Re: Alan Lonneville] #574850
12/02/14 11:23 pm
12/02/14 11:23 pm
Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
Mark Z Offline
BritBike Forum member
Mark Z  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
I'm using a large C-clamp with a piece of chrome-moly tubing (cut in half) and a large washer welded to the fixed end. The washer fits over the valve stem and collets, and you access the collets via the open side of the tubing. Sorry, no picture, but I can supply dimensions if you like. I've used it on Triumph heads as well as my A65s; it works well.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: Valve Spring Compressor [Re: Alan Lonneville] #574852
12/02/14 11:50 pm
12/02/14 11:50 pm
Joined: Jul 2014
Posts: 32
victorville, california
S
Samhain Offline
BritBike Forum member
Samhain  Offline
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S
Joined: Jul 2014
Posts: 32
victorville, california
I use the drill press, cut a little tube with a notch to reach the keepers. Needless to say I don't use it often enough to need something fancy.

Re: Valve Spring Compressor [Re: Samhain] #574862
12/03/14 3:45 am
12/03/14 3:45 am
Joined: Aug 2014
Posts: 958
.
Les P Offline

BritBike Forum member
Les P  Offline

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Joined: Aug 2014
Posts: 958
.
I have been using one of the cheap compressors off eBay for the last two years or so.
Works like a dream every time, Moto Guzzi, Triumph, Norton, Sunbeam, even on my DR650.
The secret, put some pressure on then give the valve stem end of the compressor a tap with a soft hammer and the collets unseat then wind the retainer down enough for removal.

If you do not do that the body will start to bend or distort.

Last edited by Les P; 12/03/14 3:46 am.

More bikes and projects than you can shake a stick at but they should be done in two shakes of a lamb's tail.
Re: Valve Spring Compressor [Re: Alan Lonneville] #574868
12/03/14 5:28 am
12/03/14 5:28 am
Joined: Sep 2011
Posts: 955
New Zealand
Excalibur Offline
BritBike Forum member
Excalibur  Offline
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Joined: Sep 2011
Posts: 955
New Zealand
I have several but this one I acquired about 30 years ago is my favorite. It uses a 5mm (.2") thick strongback.

Re: Valve Spring Compressor [Re: Alan Lonneville] #574876
12/03/14 10:00 am
12/03/14 10:00 am
Joined: Mar 2005
Posts: 10,087
Boston, Massachusetts
J
John Healy Online content

BritBike Forum member
John Healy  Online Content

BritBike Forum member
J
Joined: Mar 2005
Posts: 10,087
Boston, Massachusetts
The taper fit of the top collar and 2 keepers is the reason for your frustration.

Tapers lock together and can take an inordinate amount of force to get them to release. This is why they are used on clutch and flywheel shafts. To use a valve spring compressor you must first release the lock that is holding the keepers tight in the top collar.

To release a taper lock does not take a lot of pressure, but a sharp shock from the likes of a hammer. This is what you do when you use a clutch hub puller when you tighten it and then hit the head of the bolt with a hammer. The tension of the puller and then the shock delivered by the hammer blow releases the taper. While this can be done using the valve spring tool: put a bit of tension on the spring-collar assembly and then hit the head of the compressor with a hammer, most technicians use a 3/4" spark plug socket open end seated on top of the collar and with a medium sized hammer give the drive end of the socket a rap and then use the spring compressor to remove the collar and collets.

While Excalibur's spring tool looks minimal it is more than up to the job if the lock provided by the collar/keeper taper is released before it is used.


Re: Valve Spring Compressor [Re: Alan Lonneville] #574938
12/03/14 7:51 pm
12/03/14 7:51 pm
Joined: Jun 2010
Posts: 511
Maine
M
MikeinBiddeford Offline
Private sponsor
MikeinBiddeford  Offline
Private sponsor
M
Joined: Jun 2010
Posts: 511
Maine


Please do not believe anything I write. I am a hack but I like to guess the right answers.
Re: Valve Spring Compressor [Re: Alan Lonneville] #574953
12/03/14 9:26 pm
12/03/14 9:26 pm
Joined: Jul 2009
Posts: 3,549
Vic. Australia
P
Pete R - R.I.P. Offline
In Remembrance
Pete R - R.I.P.  Offline
In Remembrance
P
Joined: Jul 2009
Posts: 3,549
Vic. Australia
I lent a spring compressor to a mate, about 30 years ago. I'd had it for years, and it worked fine.
He broke it in half, because he didn't shock the spring collar with a hammer.

I straightened it out and welded it back together, and it still works fine.

Re: Valve Spring Compressor [Re: Alan Lonneville] #574956
12/03/14 10:14 pm
12/03/14 10:14 pm
Joined: Aug 2001
Posts: 2,404
SLO County, CA
D.Bachtel Offline
BritBike Forum member
D.Bachtel  Offline
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Joined: Aug 2001
Posts: 2,404
SLO County, CA
I've got a couple of these I made. Different sizes.
Harbor Freight and some rigid pipe.
Inch and a half of welding.
The collets drop into the pipe for easy retrival and reinstallation with a magnet.









Don in Nipomo

Re: Valve Spring Compressor [Re: Alan Lonneville] #574958
12/03/14 10:43 pm
12/03/14 10:43 pm
Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
Mark Z Offline
BritBike Forum member
Mark Z  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 4,369
Owego, NY, USA
Yes, mine looks very much like Don's, except that I have a thick flat washer welded to the end of the tubing. The hole in the washer is just large enough to clear the collets.

Funny, I've never experienced (or at least never noticed) the problem of the collets sticking in the spring retainers. Maybe because my spring compressor is so beefy (has a 4"-long handle)?


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: Valve Spring Compressor [Re: Alan Lonneville] #574965
12/04/14 3:51 am
12/04/14 3:51 am
Joined: Jul 2014
Posts: 395
UK
C
craig Offline
BritBike Forum member
craig  Offline
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C
Joined: Jul 2014
Posts: 395
UK
what is the seat pressure for the springs you are trying to fit ?

Re: Valve Spring Compressor [Re: craig] #575217
12/06/14 11:52 am
12/06/14 11:52 am
Joined: Jun 2014
Posts: 31
Ohio,USA
Alan Lonneville Offline OP
BritBike Forum member
Alan Lonneville  Offline OP
BritBike Forum member
Joined: Jun 2014
Posts: 31
Ohio,USA


I modified the one that was bending and this works fine. Thank you John Healy, the key is shocking the collars first!
Craig, I'm using ROTAX valve springs "naked" (no cups)in a 500 Daytona head.
Thank you everyone for your replies!

Re: Valve Spring Compressor [Re: Alan Lonneville] #575219
12/06/14 11:55 am
12/06/14 11:55 am
Joined: Jul 2014
Posts: 395
UK
C
craig Offline
BritBike Forum member
craig  Offline
BritBike Forum member
C
Joined: Jul 2014
Posts: 395
UK
why , are you trying to tune the motor , what is the load when fitted , no lower cups ?

Re: Valve Spring Compressor [Re: craig] #575248
12/06/14 3:12 pm
12/06/14 3:12 pm
Joined: Jun 2014
Posts: 31
Ohio,USA
Alan Lonneville Offline OP
BritBike Forum member
Alan Lonneville  Offline OP
BritBike Forum member
Joined: Jun 2014
Posts: 31
Ohio,USA
This is the Hot set up on the 500 Brakeless race motor. This is how Johnson Cams sets them up. Yes they do heads as well, not just cams. They do a lot of head and cam work for the Pro GNC Flat Trackers.
Not sure of the load, I'd have to call them to find out.

Re: Valve Spring Compressor [Re: Alan Lonneville] #575279
12/06/14 6:20 pm
12/06/14 6:20 pm
Joined: Jul 2014
Posts: 395
UK
C
craig Offline
BritBike Forum member
craig  Offline
BritBike Forum member
C
Joined: Jul 2014
Posts: 395
UK
what is a brakeless motor , ive not heard this before

Re: Valve Spring Compressor [Re: craig] #575283
12/06/14 6:31 pm
12/06/14 6:31 pm
Joined: Jun 2014
Posts: 31
Ohio,USA
Alan Lonneville Offline OP
BritBike Forum member
Alan Lonneville  Offline OP
BritBike Forum member
Joined: Jun 2014
Posts: 31
Ohio,USA
Craig, The term Brakeless is a class in flat track racing where none of the bikes have brakes. I believe brakes became mandatory in 1969 or 1970, not certain. Also, the Harley KR's (side valve) and the Triumph 500's (overhead valve)were the most common bikes in this class.
My own opinion this class is the most fun to race.


Moderated by  John Healy 


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