Banshee radiator plumbing

What is the correct way to have the hoses connected to the radiator on a Banshee.At the moment they are as follows.
1 large outlet from water bottle to LH bottom pipe
2 top of head outlet to RH top pipe
3 back of barrel down to top of water pump.
4 end of water pump to bottom RH pipe.
5 small return hose to top LH pipe
If this is correct then how does the water flow accross the radiator as its a cross flow design.Apparantly some Banshees over heat.Does anyone no of another way to fix this.

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6 bikes.
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one with RD top end kit.14/14 carby,carbon 3 stage fiber reeds,zx1 pipe
one with 55cc chainsaw top end, PBU pipe
ZX1 Taipan. PBU pipe,banshee engine.
Polini clutch bell .
2 X Banshees SHO
1 fitted with polini clutch,black widow triple stage reeds
19mm del rep carby,,billet head,billet reed cage, 6/76 gearing,sava tyres
1 fitted with 50cc BZM blata engine ,21mm walbro and BZM gold crank ( dangerous now:o)
1 blata SQ roller only
SRT Spooge Racing Team NTH Division

id say beans the bottom radiator hose should go in the pump inlet, & the hot water that comes out from the head to the top radiator hose

the others im not real sure of because no one out this way owns a banshee,a few pics may help.

but thats the general rule with a majority of any engines cooling systems in the bottem & out the top witch is usually the hottest part where combustion takes place

was just looking at crash dummys bike beans & we worked out the way they are set up from standard is wrong because both inlet & outlet are connected to the same side tank & the hot water is not flowing through the cores of the radiator

the bottom hose going into the pump should be on the other side ?

so its only a matter of swapping the hoses so water flows through the core of the radiator

i made sure there was no tank divider in the banchee radiator by inspecting one i have here for my b1 rep im building when i round up a pipe & pump seal & bering kit

So swapping the bottom left (which is the coolant bottle outlet atm) with the bottom right(which is coming from the back of the pump) it should flow across the radiator like its meant to yeh?
You could be onto something mac
Any1 else that knows there **** care to add anything b4 any of us banshee owners try this

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Extensively modified Pollini powered Banshee pocket unicycle

A serious note to all Banshee SHO owners. Your bike if running the standard cooling system is quite possibly configured incorrectly and causing major overheating problems.
The radiator that comes with the Banshee is a cross flow design which requires hot water enter one side and leave on the other side. Banshee's come setup with the pipes setup in the wrong order which causes all hot coolant to bypass the radiator completely.



These are photos of the standard configuration out of the box.
http://crashdummy.ugbox.net/images/P...ansheeRAD1.jpg
http://crashdummy.ugbox.net/images/P...ansheeRAD2.jpg

Now you can see what I mean ?

I've corrected mine and performed a test run and the radiator heated up evenly. Yes the radiator got hot. That is a good sign and means it's doing it's job. Once you get rolling and some air flowing through it that will cool down the water very well.
The pictures of the finished result. I moved my coolant bottle too to allow my handle bars to move freely. To move that for this modification I removed the bolts that secure it and zip tied it on with one of the rubber spacers removed. This pivots the bottle around so the fat hose can run up the right hand side of the bike and allows free movement of the forks.

http://crashdummy.ugbox.net/images/P...ansheeRAD3.jpg
http://crashdummy.ugbox.net/images/P...ansheeRAD4.jpg

To perform this modification just use the hose from runs from the radiator and bend it back around to the water pump inlet. Trim any excess hose off and bend away from the exhaust and clamp it up making sure that the bend is not so tight as to crimp the hose. You'll need to get a new piece of hose to run from the radiator to the coolant bottle now so head on out to Super Cheap auto and grab some heater or EFI Fuel hose the same size as the piece of hose you removed off the water pump inlet. Cut to size, reassemble. Refill and purge the system of air and go for a ride. Holy moly. No more overheating!

I hope you enjoyed the read. I'm sure this will help some of you out there. This probably applies to some other bikes too.

*edit*
Oops I just realised I spelled Coolant "Coolent" in the photo. Oh well.
The photo of the radiators is the same design as the Banshee radiator but is not from a Banshee. It's just an example I shamelessly grabbed off google images.

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No wheels - Woe is me

"It is better to say nothing and be thought a fool than to open ones mouth and remove all doubt."

i was talking with the pocket wog about this the other day.

IDEALLY i think the water should flow like this - ill have to test the setups in my bike.

1) water bottle connects to the TOP of the radiator which should stop the air getting trapped in the system

2) bottom water outlet from radiator to the top of the head and then the water can flow down through the pump and be pumped back up to the top of the radiator.

i think setting it up like that would reduce the workload on the pump as the water only needs to be pumped up toward the radiator and the rest would be under gravity.

as opposed to it being pumped up through the tiny water journals and then up to the radiator otherwise.

but this depends on the way the pump impeller actually turns i guess... mm...

BTW has anybody heard of that radiator Gel yet? some guy in my car club mentioned he tried it and it worked great. ill have to try find the link. sounds wierd

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www.demon50s.com

- BZM 6 port Banshee SHO
- Polini 911 - pro chinese for sale! PM for details.
- Pro SQ Cag

Glen I tested it good. There's no problems with air becoming trapped in the system. It blows out the small tube leading back to the coolant bottle. Infact once I had the system bled completely you've go the engine a good rev and water would actually blow out that breather into the coolant bottle. Good stuff I reckon!

The work load on the pump is fine the way it is now though. The pumping order is from the bottom. Radiator outlet - water pump - head - radiator inlet - core - radiator outlet
It's an uphill run for awhile then a nice easy down hill run again.

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No wheels - Woe is me

"It is better to say nothing and be thought a fool than to open ones mouth and remove all doubt."

that looks alot better crash & now the radiator & cooling cores are actually doing their job instead of being bypassed

i got my info from working on cooling systems with a radiator specialist for a few years back in 1987-88 when i left school

I wish I knew this before, would have solved my overheating problems and saved a lot of wasted time and money. Thanks for getting this up though guys, especially Crash Dummy for all the diagrams and explanations.

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Archerfield Photos
140cc Minimotard

Hard to believe the Chinese set up a cooling system so poorly.
Great diagrams Crash, well done.

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Thanks
Darren

TEAM BMS AUSTRALIA



www.ozminimoto.com.au