M_V's multitude of bikes and adventures in the land of framebuilding

Out of curiosity where were these photos taken? Looks familiar. Mugdock?

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@drøn show how to build a speedway frame

Carron valley for the Hummus, Cathkin braes for the Surly.

Would just be mud with a saddle poking out of it was mugdock!

Hahaha I literally lost a shoe at Mugdock once

Rear segmented seatstay section.

Need to cut the crosspiece down and create the mitres on the ends then stick it all together and I should have a rideable frame...

Oh yeah, I'll be silver brazing a coin of suitable diameter to the bottom to close that tube.

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I cut this bb cluster out of a shite old frame a while ago and it's just been sat on my desk since. Yesterday I bodged another tube inbetween the seat and downtubes and now I have somewhere to keep my brazing rods tidy (yes, I know the bench is extremely untidy).

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Really want to take one of these,

Pop the all the cable guides and dropouts off it and stick some track ends back in there, cold set it to 120mm, stick a longer axle in a 26" front disc brake wheel and use that with a bolt on cog as a rear wheel and have a mini ghetto Ted ESB.

Once I put bmx cranks on my mtb I'd have enough spare parts to build it.

and have a mini ghetto Pompino

When you doing the rear of your frame then? Lots more pics pls

Funny you should ask that...

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Currently soaking the flux off. Seattube needs a bit of a resm and the slot cutting and today’s brazing needs cleaning up but it might bevrideable before the day is out.

Wild! Is it straight?

I've got my shopping list together now, just need to add some cable bosses to the quote and then see what the damage is. You have plans for mkII?

As far as I can tell yeah. Seattube was in line with the head tube, wheel seems to be in line with the seattube. Going down the road might be a different matter though!

Going down the road might be a different matter though!

Will be so satisfying though!

That looks great!

Managed to get it built and took it for a spin.

Bit noodley, blaming that on the narrow tubing. Oh...and that some of the tubes are what Ceeway calls ‘practice tubes’ which they say are absolutely not good enough to build into a frame.

What’s the worst that can happen?!

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You have plans for mkII?

I have though about building another similar frame but 1 1/8” and bigger/better tubes but I reckon I’ll concentrate on some stems and mods for a while before I get stuck into another frame.

I notice you’ve got nearly no bb drop, quite slack ST and a short stem. Did you copy the geo from another frame?
I’ve picked a 1 1/8 HT and zona tubeset in the hope it won’t be like wet spaghetti

I think some of that is the photo.

According to the iphone level seat tube is 71deg, headtube is 76deg. I'll check it with my digital angle finder soon. BB drop measures 45mm.

Didn't really copy an existing frame as such. I measured the downtube/seattube/chainstay angles on my Pompino (as it has a track legal bb height) and used that info to choose my bb lug. I have that red book I think you had posted in your thread and it has tables of geometries so kinda went from that, did a drawing on bikecad then took that into CorelDraw to check the angles would work out.

I knew wanted a track legal bb drop and the bb lug sort of fixed some of the angles. I suspect I've been worrying about maintaining that track legal bb drop and have 'pulled' those angles a little bit.

According to my original drawing I was going for a 72deg seat tube angle and a 74deg head angle so I'm not too far out.

BB drop was meant to be 50mm, some of the reduction in that will be down to the track ends I've used.

Stem was just chucked in there to get it rolling today, it needs to be longer. I'll probably buy something just now but I have got some of the materials to make a quill stem, I just haven't quite figured out the design yet.

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After a bit of cleanup on today’s brazes.

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What coin did you use?

Looks great btw.

1 Euro cent for the tops of the seat stays, 10p on the bottom of the larger central tube.

Thanks.

Forgot to update, took it on the track yesterday.

I fitted a longer stem and drops and it doesn’t feel half as flex or twitchy now.

Also got a couple Starret hole saws and an arbour today. The hole saws are the right size for the tubing I’m using for the stems. My dad has a lathe/mill (I’ve maybe posted photos on here already?) and the mill head can be tilted so I can do any angle of mitre. Will see how I get on with the stem tubes and might invest in more hole saws to fit frame tubing.

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Bike looks mega Rad.

I'd always thought your avatar was just for fun but now realise it's your crotch. That's cool too.

Erm sick outfit