A A A
Avatar

Please consider registering
Guest

Search

— Forum Scope —






— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

Register Lost password?
sp_Feed sp_PrintTopic sp_TopicIcon
Moving a stand threaded mounting hole on a D7 frame.
Avatar
Mags 1
Northamptonshire.
Forum User
Site Member
Forum Posts: 2391
Member Since:
August 24, 2013
sp_UserOfflineSmall Offline
1
November 14, 2017 - 9:20 pm
sp_Permalink sp_Print

Image
I realised that I wouldn't be able to use this frame until I made centre stand operable, no good trying to do that after a repaint etc with wheels and engine in the frame, time to tackle this job was now, whilst it was so easy to manoeuvre around.
I got out the angle grinder and cleaned up both sides, the threaded hole was fairly clean already, so I let that be.
Here I'm using the brass 'tongue' from an old door lock, brass clamped on with welder earth clamp stops welding wire going out other side of hole, mig wire won't stick to brass of course.
** Please log in to view **
Makes a good welding table, but I'm mistreating it really, it's a bit too good for this job to be honest. Welding could affect ram and destroy it....
** Please log in to view **
A good dollop on this side to start.
** Please log in to view **
Brass had done its job.
** Please log in to view **
Followed by another good dollop the other side.
Plenty of penetratoion into steel needed here, no half measures.
** Please log in to view **
** Please log in to view **
Ground both sides fairly flat.
** Please log in to view **
Repaired side here does look thicker though.
** Please log in to view **
But how was I to accurately measure position of new hole for mounting bolt?
Screwing in a back brake pivot bolt and a centre stand shouldered bolt into holes on other side of frame gave me good measurements, due mostlt to the heads of said bolts still having central machining marks upon them! Tightenbed bolts up and measured dead centres. Got about 2 inches and 3 sixteenths or something like that, forget now!
** Please log in to view **
** Please log in to view **
Yes, heads were a dead give away.
** Please log in to view **
About one and seven sixteenths actually.
** Please log in to view **
But my eyes let me down with the marking out, I almost gave up after making a mess of it.
** Please log in to view **
Until another better idea occured to me, why not bolt good side up and use transfer punch to mark correct position through hole of a good straight centre stand, it worked.
** Please log in to view **
Like this here.
** Please log in to view **
Punch mark seems a bit off though?
** Please log in to view **
But spring mounting bracket was hitting same dent in main frame, aha!
** Please log in to view **
Very glad I've got the new drill press, frame sat level on footrest bracket mount and jammed itself nicely into vice.
** Please log in to view **
Used a centre type bit, shortness means it can't bend or flex and it makes a good accurate first pilot.
** Please log in to view **
Hole was a pig, had to use sulphur based lubricant as bits got hot, even good taps were squeaking in drilled holer.
** Please log in to view **

** Please log in to view **

Started with a second and finished with a bottoming tap.
** Please log in to view **
I've seen better, but it's straight and clean.
** Please log in to view **
Bolt goes in nicely too.
** Please log in to view **
Done!
** Please log in to view **
Bracket hitting same dent in frame.
All I need now is some nuts to go with the bolts, as safety anchor points at rear.

Four now on the road and at least several in bits.

Avatar
stubaker58
Sunny Felixstowe
Forum User
Club Member
Forum Posts: 299
Member Since:
June 13, 2015
sp_UserOfflineSmall Offline
2
November 16, 2017 - 8:29 am
sp_Permalink sp_Print

That's impressive work Mags,I'll know who to come to for frame repairs!

D7/14 hybrid (4 speed with D7 crank etc.) on the road, D10 Bushman awaiting rebuilding.

Forum Timezone: Europe/London

Most Users Ever Online: 98

Currently Online: proth52
16 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

Cornish Rooster: 3303

Anderzander: 3208

bart: 3137

Sprung Chicken: 2650

David Dale: 2491

Mags 1: 2391

Munchkin: 2219

Blue Heeler: 2152

Katj: 2139

HowD1: 1945

Newest Members:

_1535

Forum Stats:

Groups: 9

Forums: 46

Topics: 11590

Posts: 99487

 

Member Stats:

Guest Posters: 510

Members: 2741

Moderators: 2

Admins: 3

Administrators: Piquet, JMD, Rusty Floater

Moderators: cocorico, xcgb