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-   -   Question on F18F from X-Treme Jets (https://www.rcuniverse.com/forum/rc-jets-120/11669275-question-f18f-x-treme-jets.html)

jimibar 09-27-2019 01:41 PM

I'll try to take some pictures so you can understand. the tube is not held by screws but the wood piece is glued in place ...

jimibar 10-08-2019 12:12 AM

2 Attachment(s)
Hello Guys,

I have received my CMJets tank and it does not fit my F18, I have to remove some material on the fuse seperation if I want to fit it.
Before going this route, maybe I can try to repair the old tank.
The joint between the 2 shells is broken, I'm attaching a picture of it.
What kind of glue can I use ? Can I use standard epoxy ?
Thanks !

rhklenke 10-08-2019 12:17 PM

It is absolutely possible to fix that crack. You have to *thoroughly* clean the fuel out of the joint, then I would Aeropoxy it back together and then glass over it with an additional layer of glass, going beyond the area of the crack.

Bob

jimibar 10-08-2019 01:56 PM


Originally Posted by rhklenke (Post 12555343)
It is absolutely possible to fix that crack. You have to *thoroughly* clean the fuel out of the joint, then I would Aeropoxy it back together and then glass over it with an additional layer of glass, going beyond the area of the crack.

Bob

Thanks Bob,
I already applied epoxy all other the crack and on all the joint.
I will apply some layer of glass tomorrow.
Thanks for your reply :)

ravill 10-08-2019 05:34 PM

Aeropoxy is not regular epoxy. Google Hysol 9462. That is the stuff you want.

jimibar 10-09-2019 12:32 AM


Originally Posted by ravill (Post 12555408)
Aeropoxy is not regular epoxy. Google Hysol 9462. That is the stuff you want.

I know that aeropoxy is not the same as epoxy but I had an answer from a friend before I was reading the reply from Bob, so I used regular epoxy. The tank has been already repaired by the previous owner, that makes no doubt ... And he used epoxy unless I'm wrong.
I'll try to reinforce the joint and I'll make a filling test - without forgetting the pressure cap (...) this time - and see if I have any leaks.

Now it is time to make a turbine choice. Plane without engine and dry is 11kg or 24.2 lbs, with the stock tanks I think it will be around 15kg (33 lbs), but still without engine. What kind of turbine would you recommend ? I want to try a Kingtech but do I stay at a lower ratio with a K160 or go bigger with a K180 ?
Thanks.

ravill 10-09-2019 10:21 AM

A K160 will be plenty for that jet.


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