Chris' Bucket photo thread - Bandwidth warning

**chrisc** · 11th May 2014, 23:28

Hey Josh, yeah you too. Will get more up later on but for now, here's 5717:

_MG_5717 by sonscc, on Flickr

**koba** · 12th May 2014, 22:27

Great work gentlemen!

Do you know if this is going to be a regular event?
We may be able to work in with the organisers and get more bikes next time.
Perhaps put us North Island points?

**jibberwobble** · 15th May 2014, 08:16

Some great pictures on this thread

#4 and #56 are similar(ish) to the mini sidecars we race in the UK

**chrisc** · 15th May 2014, 22:10

Originally Posted by koba

Great work gentlemen!

Do you know if this is going to be a regular event?
We may be able to work in with the organisers and get more bikes next time.
Perhaps put us North Island points?

I hope so! I think there was talk about that specific event happening twice a year or so. Personally I'd love to have a group of buckets to regularly race on the Taupo track, it was so good!

Originally Posted by jibberwobble

Some great pictures on this thread

#4 and #56 are similar(ish) to the mini sidecars we race in the UK

Thanks mate! Good to see some foreign faces checking out the NZ scene.

**chrisc** · 15th May 2014, 22:18

Heat is the enemy. With some guidance from Rob, we've attacked this one head on with copper and heatsinks.
Before you say anything, yes the copper will be trimmed and yes the side of the bike will be protected enough to stop any damage to the track when I go down.

One of the things that really appealed to me about buckets when I first started was the scope for development and encouraged building. I know there are those out there that will raise an eyebrow to this but shit, you have to try in order to learn anything!

It sticks out about 50mm from the side of the frame which really isn't as much as it looks in this photo.
The bottom of the heatsinks aren't properly flat (maybe 0.8mm gap in some places) so I might have to look at making a squashable copper mat, or filling it with copper goo or similar. The front of the sinks have a small electric fan which should help in keeping temps down on the low speed kart tracks. I will end up making a shroud like Kel has on the front of his RS, I like that set up.

The other side has room for another fan but I'm unsure if I will run one as there isn't much room with the carb there too. Maybe just a non-fan heatsink.

**F5 Dave** · 16th May 2014, 05:45

On the start line that has to be a improvement but I can't help but think that 30k up a huge mass of passing air would be more effective. But I'm no expert on air conditioning etc. Very legal I'd say. I kinda like it.

**husaberg** · 16th May 2014, 16:57

Chris, John Bradleys Book (which you have i think) details some very very effect ducting design for a air cooled two stroke..........I only noticed it the other day.....

Still interested to see how it goes more power to ya.........

**kel** · 16th May 2014, 23:58

As Dave said great for when you're sitting on the start line.
Once you're moving that heatsink will disrupt airflow across the cylinder. You want to shroud the cylinder to aid air flow, see the KE thread for the old NACA papers on this. You could try bending the copper up 90 degrees and add smaller heatsinks to the outer face of each side.
Shouldn't that lovely chunk of copper be at the top of the cylinder? After all that's where the heat is being produced.

**chrisc** · 17th May 2014, 09:01

Needed to make a spacer for the cylinder and this slab of copper was the only piece of metal lying around that was the right thickness. May as well make use of it's properties whilst yah can. I agree on the airflow kel. I'm going to try a few different configurations.

When I was setting this up I realised that having the copper protrude backwards instead of sideways would have been a better idea. The fan behind the cylinder could have helped to pull the air through the cooling fins. Maybe that's for another try.

On a side note, I'm always impressed how reliable Ricks TF seems to be. It clearly shows that proper setup is key.

**chrisc** · 19th May 2014, 23:34

Seven of us went to the Edgecumbe kart track over the weekend whilst the kart guys were there. We had a blast learning the recently resurfaced track and a few good battles went down. I really enjoyed this track, fast but technical in areas. Not a fan of it anticlockwise though, too dangerous for 2/3 wide bucket racing (in my opinion) in some spots with not enough run off especially into the reducing sweeper/180 corner.

Frequent racing has certainly helped my confidence on the bike but I'm still struggling to correct my retarded riding style (ass too far off, not enough lean, disjointed movements). Hopefully with Mt Wellington this weekend, I can carry this confidence into a better laptime.

Here's a few photos I shot on my phone of the track before we all got out there.

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