Sidecars?

[Drew]

*Disclaimer: Not the world's best welder. Shit is hard.I was gearing up to give you shit about it too.

Some of them look primed to snap pretty quickly. I think you have the wire speed too high if you're using a Mig, or not enough current. There's seems to be a lack of penetration on a lot of the welds.

[Moooools]

I was gearing up to give you shit about it too.

Some of them look primed to snap pretty quickly. I think you have the wire speed too high if you're using a Mig, or not enough current. There's seems to be a lack of penetration on a lot of the welds.

You are probably right. I am expecting to see a couple of cracks at some stage. On all of the high stress welds I made sure there was plenty of heat, and ran a second bead if the first looked dodgy. I find keeping a steady hand and travel speed the hardest, hence why some of them look to be a bit tall. But for the most part I am pretty confident they will hold up. I will try lowering the wire speed a bit and see how I go.

[Drew]

For future reference, adding material does not add strength. Penetration is the key, it means you have melted the parts sufficiently so that they mix with the wire.

Also, grind the nuts off that your bar risers bolt to, and drill and tap the holes ya rough bastard.

[Henk]

Shit, two hour weekend? Does that mean we have to run a five lap endurance race on the Saturday?

[Yow Ling]

You are probably right. I am expecting to see a couple of cracks at some stage. On all of the high stress welds I made sure there was plenty of heat, and ran a second bead if the first looked dodgy. I find keeping a steady hand and travel speed the hardest, hence why some of them look to be a bit tall. But for the most part I am pretty confident they will hold up. I will try lowering the wire speed a bit and see how I go.

I find practicing on the actual job is not the best idea.
Go to welding tips and tricks on YouTube , he does great tutorials on all kinds of welding.

rather than going over the shitty welds with another pass, maybe you should grind them out and reweld them

[Drew]

I find practicing on the actual job is not the best idea.
Go to welding tips and tricks on YouTube , he does great tutorials on all kinds of welding.

rather than going over the shitty welds with another pass, maybe you should grind them out and reweld them

It isn't a maybe thing. I dont wanna get dramatic, but I'll wager it breaks in a bad way very quickly.

[Henk]

It isn't a maybe thing. I dont wanna get dramatic, but I'll wager it breaks in a bad way very quickly.

I'm all good with that, the more,he DNFs the less we have to beat him by actually being faster.

[Drew]

I'm all good with that, the more,he DNFs the less we have to beat him by actually being faster.

I'm not unsympathetic, still rather the thing was built properly to test that front end.

[Moooools]

I don't think you are trying to convince me of anything drew. I think your intention is to shame me. Is it working?

[Drew]

I don't think you are trying to convince me of anything drew. I think your intention is to shame me. Is it working?

Not my intent at all man. Have someone who knows how to weld come have a look. Better safe than sorry.

I'm interested in seeing how that front end works.

[Pumba]

Nice work Moooools. I love the invation wit the front end. It making me sit down and think about what I have sketched up now and weatehr it can be improved upon by "borrowing" your idea.

I genuinly dont think Drew is trying to shame you. He just has the internet tact of a sledge hammer.

From my personal experience a broken frame is not that much fun.

[Drew]

[QUOTE=Pumba;1130778790
I genuinly dont think Drew is trying to shame you. He just has the internet tact of a sledge hammer.

From my personal experience a broken frame is not that much fun.[/QUOTE]I thought I was being polite and all that jazz.

[Moooools]

Not my intent at all man. Have someone who knows how to weld come have a look. Better safe than sorry.

I'm interested in seeing how that front end works.

I am glad. The way you come across has a big impact on how your input is taken, whether you like that or not.

Now I am not the best welder, but have spent a lot of time with the MIG torch before this. I know what a weld looks like when it doesn't penetrate. I make sure all of my welds have good penetration.
Several people who know how to weld have taken a look at the welds, and apart from aesthetically, have not mirrored your comments on lack of penetration.
The idea behind this build has been minimum time outlay. I am very busy, and often the fast-but-workable option outweighs the pretty option or the industry best practice option. Some parts you see are a result of this.

The photo's are not great quality, and are in unusual lighting. May I suggest this is contributing to your concerns?

I am confident it will not see major structural failure, but I wouldn't be surprised if I saw a few cracks appear down the line either.

[Moooools]

Nice work Moooools. I love the invation wit the front end. It making me sit down and think about what I have sketched up now and weatehr it can be improved upon by "borrowing" your idea.

I genuinly dont think Drew is trying to shame you. He just has the internet tact of a sledge hammer.

From my personal experience a broken frame is not that much fun.

Cheers.

I wasn't exactly going for innovation, more like: what is a nice easy way to do this? But I am glad people like the design.

I think the entire internet has the internet tact of a sledge hammer. Something about anonymity does that to people.

No I can't imagine a broken frame is much fun.

[Drew]

I'm not anonymous, my name is Drew Mair.

[haydes55]

I'm not anonymous, my name is Drew Mair.



Please have a child named Night!

[Moooools]

I'm not anonymous, my name is Drew Mair.

Not literal anonymity.

[Drew]

Please have a child named Night!My cousin wasn't allowed to have Night as his sons middle name. Births Deaths and Marriages sent him a letter saying the birth certificate form was void.


Not literal anonymity.Is that ambiguity? Think it is.

[Pumba]

I thought I was being polite and all that jazz.

You were. I have been round here long enough to know when you are not being polite.

[Moooools]

Is that ambiguity? Think it is.

Absolutely.

[Henk]

My cousin wasn't allowed to have Night as his sons middle name. Births Deaths and Marriages sent him a letter saying the birth certificate form was void.

Is that ambiguity? Think it is.

Bastards.
Should have told them it was for religious reasons as that was when he was conceived and that they are persecuting you.

[seymour14]

I feel gutted for you Drew, why would they deny your kin such a great name!

Next time try for a first name such as "Whata"

Tell them it is Maori and traditional...:laugh:

[speedpro]

From experience I can confirm it is no fun losing the front off your sidecar whilst riding it. Losing the rear, twice, is no fun but pales compared to the front.

[Sketchy_Racer]

Moools, you're frame will be fine. Drew is being pedantic. From the looks you're using a fairly standard RHS so will be a low carbon steel, that will yield long before the welds break off! I would be very surprised if you get any cracking, just not enough carbon in the steel to create a martensitic structure in the metal.

Bit of a grind bit of a paint no-one will know ;)

[speedpro]

Make sure you use structural paint

[Moooools]

Moools, you're frame will be fine. Drew is being pedantic. From the looks you're using a fairly standard RHS so will be a low carbon steel, that will yield long before the welds break off! I would be very surprised if you get any cracking, just not enough carbon in the steel to create a martensitic structure in the metal.

Bit of a grind bit of a paint no-one will know ;)

Cheers Sketchy.
Shit been a while since I have looked at a phase diagram. But on inspection it only possible to create martensite above 0.68% C (And lack of time for the carbon to diffuse out into cementite). So you are right.

I will go with the paint only option I think. A bit of extra material never hurt anyone.

[Bert]

http://youtu.be/oQ7eLii9UB8


http://youtu.be/W79vGW2ah2U

A couple of quick clips of the high school sidecars in action today.

The local Fielding lads battling out the front.:msn-wink: