After tuning the trimtabs, mounting a alternator, work on the cooling, adding a hood, and the latest firmware possible on our microsquirt it was time for an other sunday afternoon of speedboating.

We did go faster! 60km/h
we broke stuff, it locked up goning 60km/h



The chain held up, that was the weakspot we tought



The impellor is ok!



after taking off the chain and sprockets we saw that the chain had been rubbing a bit



this is the part that broke, a 10/15 euro trustbearing



this is how we came back








We are going to exchange it with bronze washer and try again.............see whats the next weakest link.........

 

Do you have a closed cooling system or are you using lake water? Also do you have water injection in your exhaust a cooled manifold?

 

We do run a closed cooling system, existing out of a heatexchanger, an electric seawaterpump, an electronic controled coolantpump and a temp switch to control the seawater pump. (for faster warm up).
After the heatexchanger the water goes in to the exhaust.
there is a seperate electricpump that cools the turbo's with sea water.

 

Sounds like a legit setup. Great work!

 

tnx!@ we our verry, verry best!

 

Looking Great, long road ahead!! wiring is a pain in the ***!

 

good luck with your project

 

tnx!

 

Must be a sick boat

 

Good luck

 

What a cool thread!
Looks like a blast out on the water

Awesome boat/motor/skills

 

good job and keep up the good work

 

A bronze trustbearing was fabricated and in, that was kind of a strugle............
Next: more test runs before frost comes in!

tnx for the coments guy's!

 

More boating was done last sunday, went up to 65km/h and it locked up again...............
Can't get it to rev over 4200rpm.

 

it's apart and the drive chain broke!

 

that thing is awesome! lol

 

new trust-bearing set-up

 

The last time, in 2012, we had the mazda 13b powered vega 405 out.

 

Some of the carnage, deu to being out of line caused by a mounting failure of a trust bearing the drive chain broke last time, dec 2nd, we had the boat out in the water.

We are working on the repairs.



At the moment work is done on the bonnet/hood, it's mainly plywood and glassfibre.

 

This is a cool project. Will definitely be keeping an eye on this.

 

nice build good luck

 

tnx guys.


our mega yacht is having her winter rest............work is done on redoing the drive shafts, the hood is getting finnished building and getting ready for custom painting.

 

Bonnet came out great.

 

it's noware being done.....................

 

After a long dutch winter we could work on all the idea's to make the mazda 13b rotary vega 405 better!

We worked out the ignition, added some gauges, beefed up the drive shaft and added an other bearing.

Our idea's about paint:







First start up in 2013.