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rowlandcarson(at)gmail.co
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 Posted: Sun May 15, 2016 9:56 am Post subject: coolant overflow bottle questions |
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I’m trying to find the optimum position to install my coolant overflow bottle, and have come up with some associated queries.
(1) On the relatively few installations of which I’ve got pictures, most people seem to fit it at the port side on top of the footwell. My present plan for the layout of the battery and electrics offers space for it on the starboard side instead. However, either of these locations makes it somewhat inaccessible for daily checks. My copy of the Rotax Operators Manual says (inter alia):
"10.3.1) Daily checks
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davidjoyce(at)doctors.org
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| Posted: Sun May 15, 2016 11:04 am Post subject: coolant overflow bottle questions |
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Rowland, I very much doubt whether anyone checks the overflow bottle coolant level at all, unless the level in the header tank is down or they have the top cowling off for something else. It seems to me entirely non critical as long as the header tank/inlet is full.
Regards, David
On 2016-05-15 18:55, Rowland Carson wrote: | Quote: | | Quote: | --> Europa-List message posted by: Rowland Carson <rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)>
I'm trying to find the optimum position to install my coolant overflow bottle, and have come up with some associated queries.
(1) On the relatively few installations of which I've got pictures, most people seem to fit it at the port side on top of the footwell. My present plan for the layout of the battery and electrics offers space for it on the starboard side instead. However, either of these locations makes it somewhat inaccessible for daily checks. My copy of the Rotax Operators Manual says (inter alia):
"10.3.1) Daily checks
.
.
Verify coolant level in the overflow bottle, replenish as required.
The coolant level must be between max. and min. mark or at least 0.2 litre (0.4 liq pt)."
It must be near-impossible to see the level in the overflow bottle (in the typical port footwell location) from the hatch over the expansion tank - how do other folk comply with this requirement for daily checks?
(2) My Rotax Installation Manual says:
"Expansion tank to overflow bottle hose:
- Hose connecting expansion tank to overflow bottle must be rated for vacuum/suction for min. 125 °C (257 °F). E.g. it must be strong enough to withstand high heat and suction during the cooling down period.
WARNING: A soft walled hose is not suitable as it can collapse and cause coolant system failure."
What have people in UK used for the pipe/tubing/hose from the expansion tank to the overflow bottle to ensure compliance with the above?
(3) I've seen both tie-wraps and bent aluminium straps used to retain the overflow bottle. The ali strap seems more satisfactory as the whole aft face of the bottle can be in contact with, and supported by, the firewall. Anyone had any good or bad experiences with either method?
All thoughts on these topics welcome.
in friendship
Rowland
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brian.davies(at)clara.co.
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| Posted: Sun May 15, 2016 11:17 am Post subject: coolant overflow bottle questions |
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Hi Rowland,
I have the Rotax expansion bottle on the stbd footwell and I can see the level clearly through the coolant hatch which is fitted in the standard position in the top cowl. I can also see it through the oil hatch if I get the angle right. I used fuel injection hose and have had no problems.
Regards
Brian
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gregoryf.flyboy(at)comcas
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| Posted: Sun May 15, 2016 11:46 am Post subject: coolant overflow bottle questions |
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(1) On the relatively few installations of which I've got pictures, most
people seem to fit it at the port side on top of the footwell. My present
plan for the layout of the battery and electrics offers space for it on the
starboard side instead. However, either of these locations makes it somewhat
inaccessible for daily checks. My copy of the Rotax Operators Manual says
(inter alia):
_________________________
Rowland,
I can comment on (1) above. If you position the cooling bottle on either
footwell, close to the cooling slits on the top sides of the cowling, the
coolant bottle can be seen through the slits from the outside, by just
shining a flashlight through them. It's a very easy check to verify coolant,
and no trap door needed.
Regards,
Greg
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pete(at)lawless.info
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| Posted: Sun May 15, 2016 1:46 pm Post subject: coolant overflow bottle questions |
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I check mine every time I fly - even after a short stop off!! It is part of my standard pre flight check.
Pete
On 15/05/16 20:03, davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk) wrote:
[quote]
Rowland, I very much doubt whether anyone checks the overflow bottle coolant level at all, unless the level in the header tank is down or they have the top cowling off for something else. It seems to me entirely non critical as long as the header tank/inlet is full.Â
Regards, David
 Â
On 2016-05-15 18:55, Rowland Carson wrote: [quote] [quote]--> Europa-List message posted by: Rowland Carson <rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)> I'm trying to find the optimum position to install my coolant overflow bottle, and have come up with some associated queries. (1) On the relatively few installations of which I've got pictures, most people seem to fit it at the port side on top of the footwell. My present plan for the layout of the battery and electrics offers space for it on the starboard side instead. However, either of these locations makes it somewhat inaccessible for daily checks. My copy of the Rotax Operators Manual says (inter alia): "10.3.1) Daily checks
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ward.t(at)xtra.co.nz
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| Posted: Sun May 15, 2016 1:58 pm Post subject: coolant overflow bottle questions |
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I can look through my oil hatch at the coolant level easily on the port side .
TIM
Sent from my iPhone
On 16/05/2016, at 9:45 AM, Pete Lawless <pete(at)lawless.info (pete(at)lawless.info)> wrote:
[quote] I check mine every time I fly - even after a short stop off!! It is part of my standard pre flight check.
Pete
On 15/05/16 20:03, davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk) wrote:
[quote]
Rowland, I very much doubt whether anyone checks the overflow bottle coolant level at all, unless the level in the header tank is down or they have the top cowling off for something else. It seems to me entirely non critical as long as the header tank/inlet is full.
Regards, David
On 2016-05-15 18:55, Rowland Carson wrote: [quote] [quote]--> Europa-List message posted by: Rowland Carson <rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)> I'm trying to find the optimum position to install my coolant overflow bottle, and have come up with some associated queries. (1) On the relatively few installations of which I've got pictures, most people seem to fit it at the port side on top of the footwell. My present plan for the layout of the battery and electrics offers space for it on the starboard side instead. However, either of these locations makes it somewhat inaccessible for daily checks. My copy of the Rotax Operators Manual says (inter alia): "10.3.1) Daily checks
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gregoryf.flyboy(at)comcas
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| Posted: Sun May 15, 2016 2:08 pm Post subject: coolant overflow bottle questions |
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Rowland,
I can comment on (1) below. If you position the cooling bottle on either
footwell, close to the cooling slits on the sides of the upper cowling, the
coolant bottle can be seen through the slits from the outside, by just
shining a flashlight through them. It's a very easy check to verify coolant,
and no special trap door needed.
Regards,
Greg
.........................
(1) On the relatively few installations of which I've got pictures, most
people seem to fit it at the port side on top of the footwell. My present
plan for the layout of the battery and electrics offers space for it on the
starboard side instead. However, either of these locations makes it somewhat
inaccessible for daily checks. My copy of the Rotax Operators Manual says
(inter alia):
"10.3.1) Daily checks
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