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by Rex_tulips - 30/07/25 07:59 PM
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Forums34
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Aug 24th, 2023
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Joined: Sep 2015
Posts: 145
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Sep 2015
Posts: 145 |
I've got a bent lower tube in the cross-head/subframe on my '70 4/4. I don't know what the tubing material is. Can I use heat to bend it back? Is it easier to just replace the lower tube sections? Are the castings on the ends of the tubes brazed on, or welded on? What's the best way to salvage the castings if I replace the tube?
'61 +4 DHC
'70 4/4
'80 4/4 4seater
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Joined: Dec 2011
Posts: 1,943
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Dec 2011
Posts: 1,943 |
I repaired My lower crosshead tube by cold bending it back as straight as I could get it and than drive a 1" steel tube into the crosshead tube to strengthen it. In one case I drove a 1" round bar into the crosshead. I used a heavy sledge for this. Not for the light hearted.
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Joined: Jul 2007
Posts: 26,763 Likes: 425
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,763 Likes: 425 |
I believe they are braised on. GoMog has some info on this http://www.gomog.com/allmorgan/allmorgan.htmlGood luck
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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Joined: Dec 2011
Posts: 1,943
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Dec 2011
Posts: 1,943 |
I see You are from Massachusetts. Do You know Ron Garner - Boston. Best guy on the planet for this type of information
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Seattle
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Joined: Sep 2015
Posts: 145
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Sep 2015
Posts: 145 |
I'm hoping to see Ron this weekend at our local club event. I was planning on asking him, but thought I'd find out what I could before hand.
'61 +4 DHC
'70 4/4
'80 4/4 4seater
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Joined: Sep 2015
Posts: 145
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Sep 2015
Posts: 145 |
I searched the GoMog site last night and couldn't find anything. I'll keep digging.
'61 +4 DHC
'70 4/4
'80 4/4 4seater
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Joined: Jul 2007
Posts: 26,763 Likes: 425
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,763 Likes: 425 |
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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Joined: Dec 2011
Posts: 1,943
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Dec 2011
Posts: 1,943 |
Just so all know who We are talking about visit, http://www.madaboutmorgans.com/ Ron's Blog. Maintained by His Daughter. Button
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Joined: Apr 2009
Posts: 1,036
Has a lot to Say!
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Has a lot to Say!
Joined: Apr 2009
Posts: 1,036 |
I managed to bend my crosshead a few years back. I only noticed it when servicing the front end and fitting some bearings to the kingpins. I spoke to my friend and higher Morgan guru David Rutherford who advised me to cold bend it straight.
You'll need to strip everything off the affected side. You can get it very close by eye using a light at the other end of the tube. Use the kingpin for the vertical plane and the tie-bar as the horizontal plane reference points.
How much is the bend on your car? By the way, the crosshead fittings are brazed not welded.
Last edited by Cheshire_David; 05/01/16 04:45 PM.
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Joined: Jul 2007
Posts: 26,763 Likes: 425
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,763 Likes: 425 |
What a great site. I love the 3 wheeler pub!
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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