Lock down projects

Just some fun to show. Links, pics or movies.

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malcward
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Lock down projects

Post by malcward » Tue May 19, 2020 7:08 pm

Hi a couple of pictures of my lock down projects.
What has everyone else been up to
Cheers Malc
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IMG_20200330_171938.jpg
IMG_20200519_154936.jpg

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Ian Hingley
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Re: Lock down projects

Post by Ian Hingley » Tue May 19, 2020 8:40 pm

Is that a Bandit/Fury frame?
Where's the A65 motor going?

Cheers

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Re: Lock down projects

Post by malcward » Tue May 19, 2020 9:17 pm

Hi Ian
The frame is an actual fury/bandit one suppose I should call it a bandit as its having a t100 engine in it.
The A65 is a 66 spitfire which I am slowly trying to get back to standard.
cheers malc

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Re: Lock down projects

Post by Jack Gifford » Wed May 20, 2020 5:26 am

Typical "stir crazy" tasks. Example- cleaned out trash under the workbench for the first time since building this house 45 years ago. I discovered stuff I didn't even remember having.
Picture of "found" tools to give to grandsons. And they are all functional!
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kids_tools.jpg
Last edited by Jack Gifford on Fri May 22, 2020 5:44 am, edited 2 times in total.
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Re: Lock down projects

Post by beat » Wed May 20, 2020 8:40 pm

making more way in a front suspension:
DSCN1813.jpeg
cut the headstock
DSCN1814.jpeg
DSCN1831.jpeg
reweld headstock
DSCN1824.jpeg
cut fork
DSCN1826.jpeg
prolong fork
DSCN1842 2.jpeg
all back in place !
suspension plus 75 mm, total now 230 mm

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Re: Lock down projects

Post by minetymenace » Thu May 21, 2020 8:25 pm

Some of us have been working, and life carries on as normal. I wouldn't mind being sent home, I don't care for the illness bit, but assuming I was fit, I would be able to finish my bike shed......
shed 1.jpg
shed 2.jpg
There is no evidence to support the notion that life is serious.
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Re: Lock down projects

Post by beat » Thu May 21, 2020 8:39 pm

minetymenace wrote:
Thu May 21, 2020 8:25 pm
finish my bike shed......
Whowwwww :!:

I ask myself: what dos the hanging Sign sais ?

"" beware of the Beast "" :?: :?: :?:

beat <017

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Re: Lock down projects

Post by Ian Hingley » Sun May 24, 2020 3:50 pm

My 72 A65 had a plain white tank which had a couple of noticeable dents.

Thought i'd try a bit of filling and aerosol (rattle can) spraying.

Still need to flat back and polish the clear coat lacquer, but definitely an improvement...
IMG_20200506_140820.jpg
IMG_20200506_140826.jpg
IMG_20200506_143708.jpg
IMG_20200521_145315.jpg
IMG_20200521_145354.jpg
Cheers

Ian
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Re: Lock down projects

Post by beat » Sun May 24, 2020 8:17 pm

Ian Hingley wrote:
Sun May 24, 2020 3:50 pm
definitely an improvement
:thumb :thumb :thumb

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Re: Lock down projects

Post by koncretekid » Sat Jun 06, 2020 11:38 pm

Beat,
Does your new front suspension on your sidecar rig have negative trail? Looks like the front axle may be out in front of the steering axis, but I can't tell from the photo.
Tom
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Re: Lock down projects

Post by Jack Gifford » Sun Jun 07, 2020 6:28 am

koncretekid wrote:
Sat Jun 06, 2020 11:38 pm
... Looks like the front axle may be out in front of the steering axis...
Wouldn't that be positive trail?
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Re: Lock down projects

Post by koncretekid » Sun Jun 07, 2020 10:34 am

From Cycle World: "Trail (B) is measured in distance (inches or millimeters) between the point of the front wheel’s contact with the ground and a line drawn through the axis of the steering head.

Under normal operation, this contact point is always some distance behind the projected line—somewhere between 2 and 4 inches (5–10 cm). Think of it as how far the contact patch trails behind the steering axis. Too much trail makes a motorcycle difficult to turn; too little makes it unstable."

If we speak of trail as being 4", I'm considering that positive. So if the point of contact of the front wheel is ahead of the projected line thru the steering axis, I would call that negative, rightly or wrongly. In any case it is opposite of what we normally see, and it seems as though it would make the steering twitchy, or worse. But then I've never driven a sidecar rig.

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Re: Lock down projects

Post by beat » Sun Jun 07, 2020 8:03 pm

koncretekid wrote:
Sat Jun 06, 2020 11:38 pm
Does your new front suspension on your sidecar rig have negative trail?
hi Tom,

this is a question I been asked very often.

the answer is simply : it has zero, nill, just right up point to point.

this in the suspension position of " full back ", - no free slap seted up.

I know a few riders they prefere a " positive " trail of around 5 to 15 mm because when the front wheel only is " diving in " to suspension, it comes
automaticli to a " negative" effectness because the swing arm radius.

the result of a twitchy steering is easy to compensate with a hard steering damper, this I have in use anyway .

IMO, a zero trail makes a sidecar bike more aggressive, a positive trail makes it more calm.
last season, when we started racing completely new, the swing arm was set to 25 mm trail positiv.
this year, as I have made a new arm, I set it up to zero :lol:

beat <212
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Re: Lock down projects

Post by koncretekid » Mon Jun 08, 2020 2:24 am

Thanks for your explanation. I have considered putting a sidecar on the Bonneville land speed bike, but I don't think I'll go with "0" trail!
Tom
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Re: Lock down projects

Post by Jack Gifford » Mon Jun 08, 2020 5:58 am

koncretekid wrote:
Sat Jun 06, 2020 11:38 pm
... Looks like the front axle may be out in front of the steering axis...
Sorry I didn't express my comment correctly. I just wanted to point out that trail is measured (from steering axis) to wheel/ground contact, not to the axle. Thus, given reasonable rake, it's quite common for the axle to be forward of the steering axis, and still have positive trail.

I also have to thank beat for sharing insight into sidecar steering.
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Re: Lock down projects

Post by beat » Mon Jun 08, 2020 9:05 pm

Jack Gifford wrote:
Mon Jun 08, 2020 5:58 am
I also have to thank beat for sharing insight into sidecar steering.
no problem with this, no secrets on BSA's.

IMO, this is what this beautiful forum is for....

beat :mrgreen:

BTW, Tom, - what is the " Nachlauf " Trail on your fast record fraim ?

it must be huge, because no bends to go, - just fast straight out !

beat <201

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Re: Lock down projects

Post by koncretekid » Mon Jun 08, 2020 9:26 pm

The trail of my Bonneville bike (B50 now 600cc) is about 4-1/2" with a 30 degree rake angle.
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Re: Lock down projects

Post by Jack Gifford » Tue Jun 09, 2020 6:34 am

Tom- I suppose you heard that the Loring spring meet is cancelled?
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Re: Lock down projects

Post by crankbuster » Tue Jun 09, 2020 1:53 pm

Lockdown project: Tank draining through the carb: 3D metal printed threads
DrainValve.jpg
DrainValveReal.jpg

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Re: Lock down projects

Post by minetymenace » Tue Jun 09, 2020 2:55 pm

Love the reflection!
Why drain the tank through the carb?
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Re: Lock down projects

Post by crankbuster » Tue Jun 09, 2020 6:00 pm

1. Just got bored.
2. Because I can (now)
3. Reflection is from a factory photo belonging to the University of Birmingham, (Creative Commons License)
Interested to see if I could model a thread that would print and be functional, so I was surprised that it fits:
DrainPugIn.jpg

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Re: Lock down projects

Post by beat » Tue Jun 09, 2020 7:36 pm

koncretekid wrote:
Mon Jun 08, 2020 9:26 pm
4-1/2" with a 30 degree rake angle.
interresting.
I go for 27 ° angle, it makes it evan a bit more " quickly reacting" :grin:




crankbuster wrote:
Tue Jun 09, 2020 6:00 pm
a thread that would print and be functional,
congratulating !
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Re: Lock down projects

Post by skippy » Wed Jun 10, 2020 12:06 am

So you can 3D print them from your cad drawings. for flote level checking that would work fine.
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Re: Lock down projects

Post by minetymenace » Wed Jun 10, 2020 8:00 am

Ah, float level checking...

Crankbuster, we print nylon at work and regularly print threads, we sometimes have to clean them up with a tap or die, and in nylon they aren't that strong, but it amazing what you can print, hold down clamps with integral springs was an eye opener. We used to be charged by volume and then for cleaning by the item, so we got good at packing many parts into a cube, then we enclosed the whole in a thin mesh cage, this kept all the small parts together and also meant that we only got charged for cleaning one piece! The cage got cut away and discarded, but it gave goods inwards inspection a nightmare.
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Re: Lock down projects

Post by malcward » Sat Jul 18, 2020 7:27 pm

Bit of progress on the t100 bandit.
Cheers Malc
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IMG_20200718_161715.jpg
IMG_20200718_161501.jpg

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Re: Lock down projects

Post by Keefe » Tue Jul 21, 2020 5:23 pm

That's looking really nice.

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Re: Lock down projects

Post by minetymenace » Wed Jul 22, 2020 8:19 am

I agree, there is something about a mono-shock Bandit frame.
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Re: Lock down projects

Post by SteveS » Wed Jul 22, 2020 11:08 am

.
Well spotted Gerry :smile: but many a true word spoken in jest. That frame is crying out for a monoshock conversion. Apologies to the purists :oops:
.
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Re: Lock down projects

Post by malcward » Sat Aug 01, 2020 7:08 pm

No longer a monshock, sorted the wiring harness and a few more bits bolted on,
Cheers Malc
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IMG_20200801_171324.jpg
IMG_20200801_171309.jpg

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