Star

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Re: Star

Post by minetymenace » Fri Dec 28, 2018 2:03 pm

I know you said "WIP" but are you going to triangulate that bend in the swing arm?
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Re: Star

Post by beat » Sun Dec 30, 2018 9:15 pm

one more ( unexpected :oops: :oops: ) bend in the not evan finished swing arm :cry: :cry:
DSCN1166.jpg
I could NOT get out the brass dummy after welding, = result from the 10 tonnes press:
DSCN1167.jpg
had to damage ( cut ) the arm to have my dummy back..... :(

well: have to go for a other one....

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Re: Star

Post by minetymenace » Sun Dec 30, 2018 10:54 pm

<201 8u$$er. $h1%£ happens sometimes....
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Re: Star

Post by beat » Mon Dec 31, 2018 6:54 pm

today, I started for a new one, slightly more " modern " version:
DSCN1168.jpg
Brass dummi with Diameter minus 0.4 mm.
first making one side only:
DSCN1169.jpg
in progress
beat <982

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Re: Star

Post by minetymenace » Mon Dec 31, 2018 10:22 pm

Top rail should be straight beat...triangulation, not parallelogram...
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Re: Star

Post by Jack Gifford » Tue Jan 01, 2019 6:55 am

Tying the two bends together would fully triangulate the arm (2 triangles with a common side).
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Re: Star

Post by minetymenace » Tue Jan 01, 2019 10:19 am

Yea, I thought of that after I posted....mined you, if this is designed by committee, its going to look like a camel and weigh a ton and a half!
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Re: Star

Post by beat » Tue Jan 01, 2019 9:58 pm

Jack Gifford wrote:
Tue Jan 01, 2019 6:55 am
Tying the two bends together
if I got it right, this means making a connection from the lower tube to the upper one just in the center of the bend, right?

- this ( and some more ) is what is in the plan for this swing arm
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Re: Star

Post by beat » Wed Jan 02, 2019 9:16 pm

abouth like this ??
DSCN1170.jpg
on the way.... ( not finished yet.. )
DSCN1171.jpg
IMO, the critical point is not near the rear wheel axle, no, - it is near the swing arm bearing point.
so there is some more in the plan ( head <017 )

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Re: Star

Post by minetymenace » Wed Jan 02, 2019 9:20 pm

Webs..
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Re: Star

Post by beat » Wed Jan 02, 2019 10:43 pm

yes, Webs......
:?: :?:
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DSCN1172.jpg
Webs......

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Re: Star

Post by Jack Gifford » Thu Jan 03, 2019 6:41 am

beat wrote:
Wed Jan 02, 2019 9:16 pm
... abouth like this ??...
Yes, that's what I was thinking.
What are you thinking for swing arm strength in the horizontal plane?
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Re: Star

Post by minetymenace » Thu Jan 03, 2019 8:58 am

Webs....
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Re: Star

Post by beat » Thu Jan 03, 2019 10:47 pm

Jack Gifford wrote:
Thu Jan 03, 2019 6:41 am
What are you thinking for swing arm strength in the horizontal plane?
for me, easier to made than to explain,- language wise... :oops:

just give me two more days please <209

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Re: Star

Post by beat » Fri Jan 04, 2019 10:29 pm

DSCN1175.jpg
DSCN1176.jpg
DSCN1177.jpg
DSCN1179.jpg
<216

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Re: Star

Post by minetymenace » Sat Jan 05, 2019 9:45 pm

Those aren't webs! How about a triangular plate welded in the corners?
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Re: Star

Post by Jack Gifford » Sun Jan 06, 2019 5:52 am

I agree with Minety on the gussets. Except that they are more effective when attached to the "faces" of the tubes rather than to the "insides" of the tubes (ask any builder of driver cages for race cars).
"Motley" bike history: Horex 400, 1940 HD 45 FH, HD Baja 100, '49 Indian Scout 440, Victor 441 Roadster, H*nda TL125, Guzzi V50, H*nda FT500, 400-4, NX250
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Re: Star

Post by minetymenace » Sun Jan 06, 2019 2:27 pm

"Gussets" now there's a word. :werd
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Re: Star

Post by beat » Mon Jan 07, 2019 10:35 pm

as I wait for more ss tubes I got on to the tank.
DSCN1181.jpg
old and ugly
DSCN1180.jpg
some good size dents in...
DSCN1190.jpg
using the " tankmaker tools " and two hours later
DSCN1188.jpg
this is how it should come about....
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Re: Star

Post by minetymenace » Mon Jan 07, 2019 10:55 pm

Beat wrote:Old and ugly with some good size dents
Well that describes half the folk on this site!!!

Looking good beat...
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Re: Star

Post by beat » Sat Jan 12, 2019 10:29 pm

DSCN1197.jpg
swing arm nearby finished, now on the rear end....
<216

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Re: Star

Post by beat » Thu Jan 17, 2019 10:55 pm

finished the tank today
DSCN1202.jpg
on the way...............
DSCN1206.jpg
lot of welding work.......
DSCN1204.jpg
new center fix
DSCN1205.jpg
DSCN1208.jpg
finished !
beat <216

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Re: Star

Post by beat » Wed Jan 30, 2019 5:40 pm

belt drive adjusting on the gearbox plates
DSCN1210.jpg
DSCN1211.jpg
<216

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Re: Star

Post by minetymenace » Thu Jan 31, 2019 10:50 am

I must be having a senior moment, but how does that work then? Pivot the gearbox or slide it to and fro?
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Re: Star

Post by beat » Thu Jan 31, 2019 8:16 pm

minetymenace wrote:
Thu Jan 31, 2019 10:50 am
I must be having a senior moment, but how does that work then?
Hmmmm <201
no comment to this...... ;-)
minetymenace wrote:
Thu Jan 31, 2019 10:50 am
Pivot the gearbox or slide it to and fro?
just as simple as nothing else : leave the gearbox where it is - and shift the rest of the bike for ore back

anyone get it ??

beat <205 <214 <205 <214

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Re: Star

Post by beat » Sat Feb 02, 2019 8:29 pm

came to the side today.
1. put a new tire and tube on a old Wasp sidecar wheel ( price : 50.- ) - and new bearings...

starting the swing arm for this wheel, made out of the ruined rear arm
DSCN1231.jpg
Axle for this wheel on the way...

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Re: Star

Post by beat » Thu Feb 07, 2019 11:08 pm

rear swing arm nearly finished
DSCN1235.jpg
bearing bushes as to insert...
DSCN1236.jpg
and the sidecar wheel swing arm on the way....
DSCN1234.jpg
beat <216

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Re: Star

Post by beat » Fri Feb 08, 2019 10:40 pm

upside down wheel chair....
DSCN1238.jpg
<216

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Re: Star

Post by koncretekid » Fri Feb 08, 2019 11:13 pm

Beat,

I just noticed your build yesterday and I'm very impressed. I've been looking for an older motor like yours just to get started on another project. I'm also trying to get set up to weld aluminum as you have done. Are you using gas or electric, MIG or TIG?

By the way, after I saw your post, I posted several photos from 1970 of a motocross race in SWITZERLAND! Maybe some people you know; please have a look.

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Re: Star

Post by beat » Sat Feb 09, 2019 9:44 pm

Hi Tom,

about my weldings: it is TIG. Welder Typ : TELWYN Technology 222. costs by 2300 $. the gas is Argon.
for Alu welding I do use a additional Gas Lens on the burner.

if you need more infos, just ask, - there are no secretes :idea:

as for this project now, the all frame is in Stainless Steel. I like to work with this stuff and : in my all livetime I hafn't seen a bike frame made out of SS.
so, - this are reasons enough ( for me :lol: ) to give it a go.
but really, - I am not 120 % sure it will hold for long. :oops:
I do strictly hold at some rules the practical working with this material was teaching me over so many years.

more parts of the frame welded now...
DSCN1239.jpg
nearly finished and with the rear swing arm



nice and clean after the treatment with the acid.
<212
Attachments
DSCN1240.jpg

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Re: Star

Post by koncretekid » Sun Feb 10, 2019 3:07 pm

Thanks for the information on the welding. My current TIG welder is a $500 Thermal Arc DC only with no foot pedal. I did learn to weld steel tubing as thin as .062" wall, but with some (many) issues. Of course it won't weld aluminum so I will have to buy the more expensive AC type to do so.

If you have an extra 40 hours, you could read about the frame I built on landracing.com., but it's 55 pages long!
finished B50 Bonneville frame.jpg
Finished frame with motor
http://www.landracing.com/forum/index.p ... 341.0.html



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Re: Star

Post by beat » Thu Feb 14, 2019 9:47 pm

hi Tom,

I find your post at landracing.com , not as I read everything, - but I study all the pics !
great work !

I had some tail work today:
DSCN1241.jpg
DSCN1244.jpg
saddle and rear mudguard fix is done...
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Re: Star

Post by beat » Sat Feb 16, 2019 8:43 pm

DSCN1245.jpg
sidecar swingarm bearing housings on the way...
Attachments
DSCN1247.jpg
and already positioning the side wheel.....

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Re: Star

Post by beat » Mon Feb 18, 2019 11:03 pm

hi all

first lifting the secret of the shifting the gearbox for belt tension adjust :
DSCN1260.jpg
so, - Slot in the Plate, washers with different eccentric bores to set the axle.
thats all.
<200
DSCN1261.jpg
today started the side.....

<216

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Re: Star

Post by minetymenace » Mon Feb 18, 2019 11:33 pm

I think your belt tension washers might get stuck beat <201 ...did you consider a snail cam al la B50?
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Re: Star

Post by beat » Tue Feb 19, 2019 10:18 pm

minetymenace wrote:
Mon Feb 18, 2019 11:33 pm
I think your belt tension washers might get stuck
will make a threaded bore in to each of this washers.... :thumb

I don't like the snail cam, it can move if there is not a strong clamp safety device.
safety device = big and heavy , = not my style <214

<212

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Re: Star

Post by koncretekid » Fri Feb 22, 2019 2:54 pm

I see you're using a right hand chair. Will the exhaust pipe be an issue for the "monkey?"
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Re: Star

Post by beat » Sat Feb 23, 2019 8:51 pm

koncretekid wrote:
Fri Feb 22, 2019 2:54 pm
Will the exhaust pipe be an issue for the "monkey?"
I hope so, - it should keep him off from falling a sleep......
:ban
DSCN1264.jpg
side under construction....
DSCN1266.jpg
the swing arm section....
DSCN1270.jpg
roughly finished....
DSCN1271.jpg
ready for welding .....
DSCN1273.jpg
after welding, going outdoor for acid treatment....
DSCN1275.jpg
same with the frame soon....
beat <982

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Re: Star

Post by Ian Hingley » Sun Feb 24, 2019 9:05 pm

Is that a photo of "the monkey"? ;-)

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Re: Star

Post by beat » Sun Feb 24, 2019 9:49 pm

Ian Hingley wrote:
Sun Feb 24, 2019 9:05 pm
Is that a photo of "the monkey"?
yes, : Monkey Lo :mrgreen:

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