TCat
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TCat added a post in a topic FWF/Jabiru
Thanks guys. I don't even think I can reach the bolt from the top, but I'll give it a shot.
Any thoughts on firewall penetrations? I would really like to get some done before mounting the FW and engine
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TCat added a post in a topic FWF/Jabiru
Well I'm finally back at it again after catching the CoVid. All good now and looking to make some progress. Hope everyone out there is doing well. I would appreciate it if anyone has some guidance on pre-drilling FW penetrations before permanent mounting?
Also, I tried to upgrade my tail wheel spring and found out that the stud/bolt from the Fuse is only 3/4" long. The new 3 leaf spring is that thick alone! I don't plan to be doing any rock hopping and I wonder if leaving off the smaller leaf would be adequate?
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TCat added a post in a topic FWF/Jabiru
Thanks for the responses guys. Much obliged. I re-read the Jab installation manual this morning and the area numbers were actually for the 3300. None actually quoted for the 2200. This afternoon I worked on refitting the cowlings. More trimming(4 times) and fitting and everything is coming together. I can see that it is very close to being correct. Also calculated the inlet area and it is much less than the area for the 3300. I should be fine on outlet area. I to have seen the wicker bill technique used and it is a viable and easy option, should flight testing reveal the need.
Safe and Happy TG all
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TCat added a post in a topic FWF/Jabiru
Thanks again Jim. I tend to agree that it may all work out, but I am a long way from a flight test. I need to be reasonably close to the ultimate fit, so I can set it aside and remove the engine to finalize all Firewall penetrations, windscreen, brakes, etc. Still have to recover the wings and build a panel. Much to do! I also may have to fab some air ducts, since it is very tight. I admit that I am a little concerned about summer temps here in Houston. Take care.
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TCat added a post in a topic FWF/Jabiru
Thanks for the info Jim. I've seen many of your posts and I greatly respect your experience and skilled craftmanship. It means a lot to a novice. Is yours a 2200, and if so, would you happen to know the inlet and outlet areas. I am skeptical of the numbers I see in the Jabiru manual. At a 3 to one 1 ratio of outlet to inlet, a small error on the front end can result in a big difference on the back end.
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TCat added a post in a topic FWF/Jabiru
I still need a measurement from the bottom of the fuselage to the top of the lower cowling, at the door post. I seem to be making progress, after many fittings and trimmings to the top cowl. Checking back on the Jabiru cooling info, it seems I need much more cooling area at the aft end of the lower cowl. More than it seems I can possibly achieve! Any assistance is greatly appreciated. I really need to get this done and move on to other items.
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TCat added a post in a topic FWF/Jabiru
The Firewall and engine are temporarily installed. That is indeed the pamphlet I was referring to.
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TCat added a topic in Kitfox IV
FWF/Jabiru- 16 replies
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