Building a bike with an DM950TD

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XLerate
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Re: Building a bike with an DM950TD

Post by XLerate » Wed Feb 27, 2013 5:53 am

coachgeo wrote:Expansion vessel? Please explain it's purpose in this build?
Just guessing but such a thing is normally used in a closed cooling system, where the radiator cap doesn't have the common pressure pop-off lever. Instead as water heats and expands it overflows into expansion tank and remains there until engine cools and it can then contract and re-enter radiator cooling system.

There's advantages because pressurized water resists the tendency to boil. In essence, the coolant water can transfer a higher temperature exchange, allowing better cooling and also guaranteeing that water won't be lost in boiling away or evaporation.

In this particular case, because it was designed and built by our man Henk, it's also breath-taking gorgeous, a work of art, a-g-a-i-n!!! :D

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coachgeo
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Re: Building a bike with an DM950TD

Post by coachgeo » Wed Feb 27, 2013 5:59 am

XLerate wrote:
coachgeo wrote:Expansion vessel? Please explain it's purpose in this build?
Just guessing but such a thing is normally used in a closed cooling system, where the radiator cap doesn't have the common pressure pop-off lever. Instead as water heats and expands it overflows into expansion tank and remains there until engine cools and it can then contract and re-enter radiator cooling system..... :D
Agree on work of art. So it's a ahhhhhhhhh.... billet overflow tank so to speak.

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Re: Building a bike with an DM950TD

Post by Henk » Wed Feb 27, 2013 7:33 pm

The Daihatsu is watercooled.
When water is going hot it expands. The vessel works as an resorvoir and the pressure escapes in the open air.
One of the top nozzle]s is open , the other is for escaping air bubbles into the air catched at the highest point.
The bottom nozzle is for filling the system.The bras inlet can be open or closed with a hexagonal bras screwcap.

The vertical nozzles are for a watergauge.

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Re: Building a bike with an DM950TD

Post by coachgeo » Thu Feb 28, 2013 3:26 am

Why that system over a typical pressurized coolant system with an overflow tank?

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Re: Building a bike with an DM950TD

Post by Henk » Fri Mar 01, 2013 9:29 pm

coachgeo wrote:Why that system over a typical pressurized coolant system with an overflow tank?
I cal it an expansionvessel, but it is the same as an overflow tank.
The system is without any pressure. Why pressure the system? The hoses can leak when the pressure is to much.

XLerate
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Re: Building a bike with an DM950TD

Post by XLerate » Sat Mar 02, 2013 6:40 am

I was mistaken, CoachGeo, it is not a closed system as I described.

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Re: Building a bike with an DM950TD

Post by Henk » Sun May 05, 2013 5:53 pm

The expansionvessel mounted on the bike.
Attachments
overflow.jpg

gearhead1951
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Re: Building a bike with an DM950TD

Post by gearhead1951 » Mon May 06, 2013 8:53 am

pressurizing the system raises the boiling point of the water making the radiator more efficent
Henk wrote:
coachgeo wrote:Why that system over a typical pressurized coolant system with an overflow tank?
I cal it an expansionvessel, but it is the same as an overflow tank.
The system is without any pressure. Why pressure the system? The hoses can leak when the pressure is to much.

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Stuart
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Re: Building a bike with an DM950TD

Post by Stuart » Mon May 06, 2013 10:37 am

That looks a solid expansion tank. The one on my Peugeot 106 is not so good. It exploded one time. I now under fill it and its fine.
Stuart. Honda NC700S, Ducati Monster M900, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.

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Re: Building a bike with an DM950TD

Post by Henk » Sun May 26, 2013 7:48 pm

2 month's ago I injured my foot badly. I sprain my left foot and couldn't walk anymore. So very little activity employed.
Today I connected my clutchcable, it take a while because made some special pieces to fit the cable rigid. Next time I wil place a picture.

While I tried to uncouple, my gearbox moved for a few mm. That's bad news and a major setback.
Some bold's (behind the flywheel) aren't tightened. I almost vomit by the idea.
It means the gearbox, clutch and flywheel has to be removed to tighten those bolts.
I have to pluck up some courage and got to work on it.

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Re: Building a bike with an DM950TD

Post by Tetronator » Thu Apr 24, 2014 6:26 pm

Ressurecting a dead thread here.

Henk, did you manage to work up the courage to work on the bike?
"...the fearless Dutchman..." -Stuart
"...the mad Dutchman..." -Diesel Dave

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