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RADBMX.CO.UK  |  Recent Posts
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Recent Posts

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1
Cupid Stunt Bike of the Month/Bike of the Year / Re: March BOTM Vote Off
« Last post by brettypeeps on April 12, 2021, 12:20 AM »
Well Done Lee

Nitrohopper - 1978 REDLINE MX2.

An awesome build and a great win fistblump fistblump
2
Tech and Restoration / Re: 2004 Euro Barcode.
« Last post by Midschoolfool on April 11, 2021, 11:51 PM »
TBH they are nearly done. I gotta say, I was suprised how well they came out. thankfully where they had been smacked with a hammer (at the top) is very thick. So most of those were easy to file. They weren't that deep either, so most was metal sticking up.

I still need to clean out the welds with a Dremel, but not doing that inside again (not even in the loft, my carpet patch now sticks you in the ass  :LolLolLolLol: ) the wires from the brush just fly out and stick into everything.

Funny thing is I thought they were painted. So I took them down this morning and covered them in paint stripper. Imagine my surprise when hardly anything came off. They had the original powder on. So I had to sand them by hand. And rust? dear god. I have never seen anything like it. The sandpaper turned dark brown. That's why I have them in the vinegar, as I know if the outside was like that the inside will be as bad.

I have ordered some JB weld for the rest of the small dents. I will get that done tomorrow. Let that harden, then Tuesday before I go home I will smooth them off and maybe put some primer on (they flash rust sooooo fast). Will pop the axle in the post on the way home, then when I get back it should be done and back here ready to sort out. I'm currently waiting for paint, and waiting for the weather. It's freezing, we've had snow and hail etc. It's been nuts. Even today when I went out to put the stripper on I had a bobble hat on the lot and was still freezing. Madness.

All I need is like, three warm days, and I can pretty much finish all of the painting. The shit part is done (twice on the frame ffs).
3
Tech and Restoration / Re: Project Q - Prototype Build
« Last post by Mikku on April 11, 2021, 10:48 PM »
Was outbid on these last night. Shame as they would have been just the ticket. I have a Plan B though. :daumenhoch:
4
Tech and Restoration / Re: 2004 Euro Barcode.
« Last post by Mikku on April 11, 2021, 10:40 PM »
I don't have the balls, knowledge or skills, not to mention Gareth's tools to attempt this kind of thing but I'm in for the finish!!! :daumenhoch:
5
Tech and Restoration / Re: Project Q - Prototype Build
« Last post by HUTCHMAN on April 11, 2021, 07:47 PM »
Got up nice and early this morning, so went for a ride around the rice paddies. Then thought I'd switch out the brake lever but gave up after about 40 minutes fighting with the plastic bar end! I eventually prised off the fooker but not before ripping off half of my thumb nail! Grrrr!! Tomorrow I'll have a go at the grip, hopefully will less pain but you know how these things go! :daumenhoch:




lovin the early morning pics
6
Tech and Restoration / Re: 2004 Euro Barcode.
« Last post by Midschoolfool on April 11, 2021, 05:20 PM »
Went at them earlier. Most of the dents filed and sanded out. There's about 5 left, I will just fill those.

Currently soaking in vinegar. Will leave them there til tomorrow.

7
Hi Paul, I'm the brother of Adam Brown (1970-1995) who rode for Team Iveson in this period. Do you recall him? Photo of him (and our mam) is believed to be from Northallerton.Also, how do I get on contact with his racing pal Howard Nash? Ta
8
Cupid Stunt Bike of the Month/Bike of the Year / Re: March BOTM Vote Off
« Last post by brettypeeps on April 11, 2021, 02:31 PM »
3 bikes with 2 votes between them fistblump

Anyones game
9
Tech and Restoration / Re: Project Q - Prototype Build
« Last post by Midschoolfool on April 11, 2021, 01:21 PM »
Yeah it's a pain if you don't have a compressor and use air. I don't, so I never look forward to it.
10
Tech and Restoration / Re: 2004 Euro Barcode.
« Last post by Midschoolfool on April 11, 2021, 01:17 PM »
I almost gave up yesterday. Just sick of people lying. Why? had he been honest I wouldn't have bought them.

Obviously now I had a huge problem. A new Profile axle is about ?60. One with the bolts and shoulders? over ?100. That means the ?45 I paid? I could have bought some new school GDH. The bolts are 3/8 24 TPI, meaning nowhere in the UK just stocks normal bolts in that size. Meaning you have to go to them.

After speaking with my friend who has a hobbyist machine setup in his garage we came up with a plan. I got out my vernier, and the bolt hole depth is 28mm. So basically Profile bolts are probably 30mm or less (they sit on 5mm shoulders like this)



That was obviously the second problem we needed to tackle though. The first was saving the axle. I was concerned he may not have the hardware to work on toughened 4130. So then I got totally schooled. I mean, this dude even knows the chemical names for this stuff. Like, the actual steel, how it's made up and even its stock value  :LolLolLolLol: So he sent me this picture to ease my concerns.



So I'm like "Oh hey nice drill bits man". Only then he told me that is his collection of carbide and cobalt. The latter will eat through anything you feed it. So, I then hatched a plan. He was talking about helicoils and etc, I don't like the idea of that. I know Profile do a hollow cro mo axle. I know because it's about ?80. So the idea I had goes like this. Bore out the original holes completely (the 3/8 24 TPI) to 10.5MM. Made them through holes. Bore into the arm another 30mm, tap to M10. Then use 60mm bolts.

Which he said was probably the easiest way to go about it, rather than trying to put back threads that were destroyed. The only thing left to do then was vernier the shoulders I will need.



Get him to throw it into 3d to make sure it looks right and then basically just send the axle to him. Then order some bolts.



As you can see, the price is a lot keener than ?35.

I degreased the cranks and axle yesterday. Whilst there I found a stamp saying "USA". So these are unstamped Profile. Not only are they unstamped older cranks, but they are bipolar. IE, they have a sprocket mount both sides. Which, makes them quite rare tbh. Pretty sure I can fix the dents. The degreaser took off some of the crappy paint too.

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