Author Topic: Pair of piston ring clamps.  (Read 624 times)

Offline A10 JWO

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Pair of piston ring clamps.
« on: 08.11. 2017 16:32 »
I have loads of these for cars and bigger engines, need some cheap as chip clamps which will open right up after fitting the 650 barrel. Thank you.

Online Greybeard

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Re: Pair of piston ring clamps.
« Reply #1 on: 08.11. 2017 18:35 »
I have a set you can borrow if you like. Here's a shot of them in action. I had no trouble removing them after use.

Online muskrat

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Re: Pair of piston ring clamps.
« Reply #2 on: 08.11. 2017 19:46 »
I use a 1-1/2" slice of poly pipe, slotted and trimmed to length and a hose clamp.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
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Online ellis

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Re: Pair of piston ring clamps.
« Reply #3 on: 08.11. 2017 20:32 »
I do just the same as muskrat.   *smiley4*

ELLIS

Offline A10 JWO

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Re: Pair of piston ring clamps.
« Reply #4 on: 09.11. 2017 17:36 »
Never heard of the poly-pipe method before, sounds good. Greybeard a great offer, watch this space. By the way found a chap called "Ol'greybeard" on a bike forum called The Jockey Journal. I feel another Chinese Burn coming on. Thanks lads.

Online Greybeard

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Re: Pair of piston ring clamps.
« Reply #5 on: 09.11. 2017 17:55 »
...found a chap called "Ol'greybeard" on a bike forum called The Jockey Journal. I feel another Chinese Burn coming on.
These scoundrels are just asking for it!


Offline coater87

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Re: Pair of piston ring clamps.
« Reply #6 on: 10.11. 2017 06:58 »
 I put the pistons in the barrels first, and then fit them to the rods.

 I thinks it's easier to do and harder to snap a ring that way.

Lee
Central Wisconsin in the U.S.

Offline A10 JWO

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Re: Pair of piston ring clamps.
« Reply #7 on: 10.11. 2017 16:08 »
Coater that sounds fiddly to me with all that weight of an iron twin barrel.

Offline coater87

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Re: Pair of piston ring clamps.
« Reply #8 on: 13.11. 2017 01:26 »
Coater that sounds fiddly to me with all that weight of an iron twin barrel.

  Not at all.

 Its a 4 minute job (two people),and your positive you did not snap a ring at all times.

 The only sketchy part at all is wrist pin snap rings. Shove enough clean rags in the mouth with a few magnets on top and thats it.

 Job done without all the drama.

 But each to his own.

Lee

Central Wisconsin in the U.S.

Offline A10 JWO

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Re: Pair of piston ring clamps.
« Reply #9 on: 13.11. 2017 17:55 »
Thanks Lee, got loads of magnets in the pit. Regards.

Offline jachenbach

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Re: Pair of piston ring clamps.
« Reply #10 on: 14.11. 2017 02:20 »
I've managed to install pistons using just hose clamps, but it's not easy. Love the poly pipe idea. Much better than steel clamps on aluminum pistons and can make it wider than a hose clamp. Installing pistons in barrels first is recommended on most of the newer bikes I've worked on, but they don't have cast iron cylinders. The weight of the A10 jugs makes it difficult with pistons already on rods, so I don't mind trying it this way next time. I've generally not had the luxury of a second set of helping hands.

Online mugwump

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Re: Pair of piston ring clamps.
« Reply #11 on: 14.11. 2017 20:48 »
I use the pistons in barrels first method. Not having a 2nd pair of hands I suspend the barrels from the frame member directly above. Then turn engine slowly to raise the c/rods up and into position. Much the safest method I think. *smile*

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Offline Sluggo

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Re: Pair of piston ring clamps.
« Reply #12 on: 14.11. 2017 23:49 »
I have some dedicated purchased clamps for auto applications and small bore engines (lawn mowers, chain saws, etc) and never got around to buying any for motorcycle applications as I never found any I really liked for my applications.  Most british twins vary from 2.5" inches to just over 3" .

So, I have range of high quality stainless hose clamps, some are for clothes dryer vent applications and others from Industrial supply and have a wider band of metal than typical hardware/auto parts store clamps.  In some cases I used a sheet of trimmed beer can, wrapped that around the rings and then the hose clamp and also a sheet of plastic cutting board material from IKEA kitchen supply.  You can easily cut it to a nice width and purchase sheets of the stuff for next to nothing, its thin, flexible but slighty rigid and has some nice properties to it. (With ring clamps over it)

I have some wedges of hardwood and some dimension pieces of tool steel and use those to support under the pistons so they are nice and stable, Then lower the barrel down, never had any trouble and never broke a piston ring.  Just take it very slow and make sure the rings transition into the bore nicely, If not back off.
Here is where a good chamfer at the mouth of the bores is helpful

The partially install the pistons method and then lowering ONTO the rods and installing the pins and circlips is the preferred and recommended way of installing Vtwin barrels  (HD & Buell) and I suppose it has its merits, but that DOES require a second person IMHO unless you are a medusa or indian love goddess with extra appendages.  I suppose the reasoning for this is because of the angle of the cyls

I would be in the market for a good set of commercial grade ring clamps for typical Britt bike applications if the price was good,quality decent and convenient to order, but it simply has not been a priority up till this point.
Remember that any advice received on a free internet forum is generally worth about 1/2 of what you paid for it.
We overcharge every 3rd customer to pass the savings onto you.
You can have High Quality, Low price, and fast turnaround. Pick any 2, Never all 3 at the same time.

Offline Rookie_V#60

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Re: Pair of piston ring clamps.
« Reply #13 on: 15.11. 2017 08:21 »
Hi,
I found this is a very inexpensive and disposable solution.
Rudolf
1923 James Model 12 500ccm v-twin
1926 Douglas EW 350ccm flat-twin
1936 Motosacoche 500ccm single
1948 BSA A7 Longstroke 500ccm parallel-twin
1955 Ariel Square Four MKII
1960 C1, 1967 C2, 1979 C3-gone!

Offline A10 JWO

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Re: Pair of piston ring clamps.
« Reply #14 on: 15.11. 2017 12:47 »
Rookie, looks very practicle; well done.