Give them to the city missionOriginally Posted by jasonu
Forum whore
Give them to the city mission
My neighbours diary says I have boundary issues
No8 Wire Extraordinaire
So the 80kg old git used to use wasn't the hot setup? Bugger!
He was expensive in alcohol too.
Don't you look at my accountant.
He's the only one I've got.
Forum whore
Rotten sod!
Low personal B.M.E.P.
Nothing worse than a rider with expensive tastes...
The skinny kids all appear to live on "V" or similar energy drinks, god knows what their teeth are going to be like...
Muddler/Dabbler.
Talking skinny kids and V, I notice that the kids bikes have moved away from ally and plastic now and the frames are all made "overkill" style from steel tube, is this because they find steel works best or cheaper to mass produce?
I do see the tips are full of little bikes (I do tend to do a bit of scrounging), which have not deteriorated at all and as sound as the day they were made!
Maybe motorcycles will follow suit - good old steel tube, safe, cheap and easy to work with!
Strokers Galore!
Hardcore Biker
Also readily available and if properly designed with an infinite (for our purposes) fatigue life. Steel is much more forgiving (and less expensive) for the DIY enthusiast.
cheers,
Michael
Hardcore Biker
How it was done in 1958.
Anorak
Old hat old chap
LE Velocette
Ie the Noddy bike
1948-1970
Grumph can likely remember a few more even earlier examples from when he was an Noahs apprentice.
Kinky is using a feather. Perverted is using the whole chicken
Anorak
I have been meaning to post some of Alf Hagons later road racing chassis
I posted a MX bike ages ago
I will post a bit of a blurb later
Kinky is using a feather. Perverted is using the whole chicken
Low personal B.M.E.P.
Bah, humbug.Grumph can likely remember a few more even earlier examples from when he was an Noahs apprentice.
Wouldn't want to get at those carbs on the Honda...
Anorak
The Hagon frame is made from 6 separate sheets of aluminium and a headstock.
On some of the pics i have seen i would be more worried about my leg from the exhaust.
As some versions had it high level exiting above the shock beside the seat.
Pretty sure the carb falls into the undo clip and yank away whole carb/s club.
On my old MB5/H100 i used to have to first remove the dummy tank then the coil to get the carb off.
To get the head of you used to have to remove a rear mounting bolt to allow the engine to swing forward as well.
Funny enough if you ever need some oval tubing, the MB5 main tubes were actually oval. Were the MB100 oval tube?
Whist i was prepping the Rd frame for paint the other day i found 5 separate welds than contained surplus mig wire, its amazing how lax the Quality control was in the 70's.
Kinky is using a feather. Perverted is using the whole chicken
Hardcore Biker
Thanks for that detailed Ariel article, there's a lot of interesting information in it!
cheers,
Michael
Hardcore Biker
Don't have access to my copy at the moment, but I think there's some stuff about pressed and formed steel frames in Irving's Motorcycle Engineering. I think he had something to do with Noddy bikes?
Low personal B.M.E.P.
Yes, there is. The old bugger was very keen on pressed steel frames. Pretty sure he was part of the design/development team for the LE, certainly some of the problems encountered are mentioned in that book.
Looking at a couple of the drawings of possible pressed frame layouts always makes me wonder if J J Cobas had a copy.
Low personal B.M.E.P.
MB100/H100 is round tube spine. Final version of Kevs was pyramid braced which made a vast difference particularly when using kerbs and gutters for passing at Greymouth....
My R5 frame was the same. pretty sure the R5/DS7 was Yamaha's first robot welded frame - and it showed it.
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