ozzietriker

Hi all,

I'm doing my 5 yearly Rotax rubber replacement and could anyone please tell me where can I get a replacement hose to this black ribbed style coolant hose? (pictures attached) it has an internal diameter of 1 inch and wall is 4mm wide.

It looks like straight heater hose but it needs to handle 130' Celcius (unlike car radiator hoses which are only good for 80-90'C). I am thinking that silicone type hoses are the way to go due their high temperature tolerance and excellent ageing characteristics. Unfortunately I am unable to get this hose from Bert Floods as it is a non-Rotax part. The aircraft OEM can supply it to me from europe in 5 weeks which is not ideal either. I'd love to hear what someone out there may be using as an equivilent?

Thanks in advance,

Andrew

Just had my 912 exhaust system ceramic coated yesterday in Turbo-Black colour at Competition Coatings in Acherfield BNE $300 - very happy with the job (pictures attached).

Thanks fellas for your advice and opinions :)

cheers,

Andrew

Wow! that's one interesting coolant hose lay out - care to send a few more photos showing the whole system.

 

I am wondering why you need to use such heavy duty cooling hoses - weight & cost must be significant.

 

I do not agree with Onetracks statement " 25mm coolant hose is a rare size" check out the Gates radiator hose catalogue https://www.gatesaustralia.com.au/~/media/files/gates-au/automotive/catalogues/hose-application-catalogue-aus-nz-january-2018.pdf

 

I think you will find a wide range of sizes and profiles

 

In my application, I use conventional automotive hoses obtained through my local Repco. Would need to check my records but I think mine are Holden Gemini hoses, probably made by Gates. The hoses come with a bend that suita my application but still need to be trimmed and joined to fit.

Thanks Skippydiesel for the information & much appreciated!

I will be at my machine tomorrow and will take some pics of my cooling system hoses for you.

Cheers

Ozzietriker, 25mm coolant hose is a rare size and often only found in heater hose applications. However, I'd suggest Parker brand, "SILICONE GREEK CORRUGATED HIGH TEMPERATURE WIRE REINFORCED COOLANT HOSE, SERIES 6621" will do the job for you.

This is a high quality, reinforced, high strength, high temperature hose used in industrial cooling applications, and it contains wire reinforcement.

The problem would be trying to find a stockist who is prepared to sell you less than a full coil length. Parker will be able to advise a suitable stockist you can purchase from.

 

https://ph.parker.com/au/en/silicone-high-temperature-corrugated-coolant-heater-hose-series-6621

Thanks Onetrack for the information & much appreciated!

One of the following should be adequate for the job?

 

https://www.ebay.com.au/itm/180-DEGREE-SILICONE-HOSE-BEND-COOLANT-RADIATOR-INTAKE-INTERCOOLER-TURBO-PIPE/122035360766

 

https://www.ebay.com.au/itm/Silicone-Hose-Inside-Diameter-1-Inch-25mm-Blue-180-Bend/264413728054

 

https://www.ebay.com.au/itm/25mm-1-ID-Silicone-180-Elbow-Hose-Blue-Turbo-Radiator-Joiner-AeroFlow-/261361470005

Big thank you Onetrack - this is awesome!

would you also happen to know where I can get this ribbed style radiator hose? (same 25mm Internal Diameter)

Thanks,

Andrew

Can anyone suggest where can I get this hose from? it has an internal diameter of 25mm and joins the oil cooler to radiator on a Rotax 912ULS engine. This is a non-Rotax part.

I've tried the OEM and Samco Sport but there is a 5 week wait for freight from UK.

Thanks in advance!

Hi All,

Can someone please tell me where can I buy this exhuast spring? it is fitted to a Rotax 912ULS engine - It is not a Rotax original part however came with the new engine. They are starting to look a little sad and wanted to replace. I refuse to use the Rotax springs as they frequently snap.

Thanks in advance,

Andrew

I had my exhausts coated in the highest heat resistance. I did it to keep heat down under cowl. It didn’t make a scrap of difference and I have had to wrap them again. If you are going for looks it’s good and will preserve the pipes but don’t bother if you are primarily going for heat reduction

Thanks for the reply and pictures - looking great. Yes the idea to get mine done is purely for looks and surface protection - mine is looking a little sad.

Interesting concept - never thought to have it done. The only issue I have ever had with my 20 year old, 920 hr 912 ULS exhaust was hairline cracking on the exit/exhaust side of the main "barrel". I put this own to harmonics/ vibration and just replaced the unit now with a spring, attached to the exhaust pipe, hopefully providing some damping of any tendency of the pipe to vibrate.

Hi Skippydiesel,

Yes ceramic coating is a great way of maintaining good surface protection for your exhaust, it may even help to remove heat better and generally looks great.

tailwinds,

Andrew

Had my 912 exhaust done....twice now. Still far far cheaper than having to replace it.

First coating was a chrome/silver finish. Looked outstanding new.

Started to fade to a dull gray quite quickly.

After 4 years I had it recoated in turbo black. This has been on 4 years and still ok.

The turbo black had the highest heat rating. Because aircraft exhausts are so thin they really get hotter than other exhausts.

I had the work done in WA at cic ceramics. Plenty of places over east to get the same job done I would imagine.

Make sure you get the highest heat rating.

G'day Downunder,

Thanks very much for your reply and advice given. Yes I like the turbo black colour - i'll definitely ask for the highest heat rating. Out of curiosity, what did it cost you to get the muffler and 4 manifold pipes ceramic coated?

Cheers,

Andrew

G'day All,

I'd love to hear from someone who has a Rotax 912/914 engine and has since got their muffler and exhaust components ceramic coated. Are you happy with appearance and is it withstanding the test of time? appreciate any pictures also you may have to share. I have previously done this on other engine exhausts with excellent results as it offers good surface protection from scratches, dirt and lasts longer than the basic paint manufacturers use on exhausts - mine is starting to look a little sad. Any experiences/opinions and referals would be appreciated.

Thanks Onetrack :)

Hi Folks,

As Bert Floods are no longer selling NGK B8ES Spark Plugs, can someone please tell me where to buy them from? NOTE they need to have un-screwable tips, the ones at car shops only sell solid posts which are too big to connect to high tension lead cap.

Thanks.

Industrial bolt supplier is at Windsor, name escapes me, look on Google.

I buy my non-aviation fasteners from these people: Cutting Tools, Fasteners and all your Hardware Needs | Bolts & Industrial SuppliesThey are situated at Smeaton Grange, at the Narellan end of The Northern Road, about 40 minutes from Penrith.

They have a wide range of products, and are happy to sell in very small quantities.

 

OME

Hi Folks,

Does anyone know of/recommend a good fastener shop in Western Sydney (Hawkesbury area)?

Many thanks

Andrew

Hi fellow Aviators,

I need to replace my battery. I cannot get this battery here in Australia. Can anyone suggest an effective equivalent make and model to the one pictured?

It is fitted to a Magni M16 Gyrocopter, with Rotax 912ULS 100hp - so it would need to be a sealed unit and able to withstand high frequency airframe vibration in flight i.e marine grade. Been to some battery shops in town and they're not helpful.

Any info would be appreciated.

Cheers

Andrew

Hi, the following airfields in WA/SA have Mogas:

Busselton (through aero club)

White Gum Farm

Balladonia

Caiguna

Border Village

Nullarbor Roadhouse & Airstrip

Great idea with this, where will you have this info placed?

The first pump was an "AC" brand and the motor had about 1000hs or so on it. The second was the later model pump but the problem was caused by fitting it with the original spacer instead of the thicker spacer required to stop it from over stroking the pump and seizing it.The electric pump was mounted before the mechanical pump and was normally only used for takeoff and landing.

I don't have access to the plane any longer and am not sure of the model number but my recollection is that it was just a garden variety Facet with 3 to 6 psi pressure.

Cheers,

Andrew

I have twice been flying a Rotax 912 powered plane when it suffered fuel pump failure. Both times it was the mechanical Pump.First time the valves came loose inside the pump.(found on strip down). The second was because the replacement was installed with the incorrect spacer and inside of about 4 hrs seized up. On both occasions the Facet electric pump kept the motor running.

Can you tell me which model of Fecet fuel pump you have fitted in your 912ULS?

If output pressure is too high it will override float valve in carb. Rotax say 4.4psi max.

Thanks Valex for your post, having an Aux electric fuel pump is priceless.

Did you mount yours before or after mech pump plumbing?

Cheers

I have twice been flying a Rotax 912 powered plane when it suffered fuel pump failure. Both times it was the mechanical Pump.First time the valves came loose inside the pump.(found on strip down). The second was because the replacement was installed with the incorrect spacer and inside of about 4 hrs seized up. On both occasions the Facet electric pump kept the motor running.

Hi OzzieRight now I own a Foxbat and therefore have no electric booster pump

But if I was inclined to fit one I would look for a new one to fit a 12v cessna or piper fitted to an aircraft with a 100 to 140 hp engine the best person to talk to would be a LAME he could give you supply volume and pressure specs also fitting threads. Facet actually make aircraft pumps as well

The only fuel pump I've ever had fail was electricHas anybody here actually had a mechanical pump fail ?

I would rather fit a GA type electric pump than the pressed metal cheap auto pumps

The idea is to have a backup (electric pump) TO USE ONLY in the event that the mechanical one fails (although unlikely).

It would help my psychological welfare when flying over remote areas in WA/tiger country etc...

Is there a specific GA electric pump which you are suggesting? pressure range i'm looking at is 2-4 PSI.

Cheers

The Facet pump for the 912ULS in the RV-12 is a 40105. You could order one from Vans - probably cheaper postage than A/C.http://vansaircraft.com/cgi-bin/store.cgi?ident=1456236795-212-141&browse=engines&product=pump-carb

rgmwa.

the one pictured in that link seems to have different fittings? My fuel hose is 8mm (5/16").

Fedtro is a cheap copy of a Facet pump. They even copy the box it comes in. I bought one as an auxilliary pump & it worked OK for a while but had an erratic sound that was not inspiring at all. Then I mistakenly reversed the polarity when re connecting the wires back to the switch & that blew it up. I'd spend a bit more & get a good quality American made Facet. The Facet also has reverse polarity protection.

not sure which one to buy for Rotax 912ULS - i'm thinking 40105 (the same P/N as FEDTRO) ?