Need advice

[MNBenny]

@alaskabearhawk

my email address is [email]ben.ramler2010@gmail.com


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[Deftone]

I checked out the pictures on your facebook page. I think those are beyond epoxy repair. Use your master template and router to make some new ones.

I agree, the templates are way beyond repair. I made my previous comments on repair before looking at the pics. Using your master to make a new template shouldnt be a big deal, but you may want to think about what happened to cause this damage first, so you dont do the same to your master.

Looking at the pics...how did you manage to do it without noticing? Did you not have the router bit bearing running along the template? I also would have thought it would have kicked up a bunch of dust for taking off so much material.

[tbaylx]

I checked out the pictures on your facebook page. I think those are beyond epoxy repair. Use your master template and router to make some new ones.

[Chris In Milwaukee]

That'll work. It'll take a little longer to dry, but T-88 will do the trick just fine.

[MNBenny]

I got some T-88


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[Chris In Milwaukee]

You'll need to make your own. Grab some 2-part epoxy from the hardware store, and then mix in some MDF sawdust until it's the consistency you're after. Then smoosh it where it needs to be smooshed. Sand to your liking, and you're back in business!

~Chris

[MNBenny]

BTAZ where do you find that MDF/epoxy paste? I never heard of it


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[MNBenny]

Can anyone tell me if in there plans there is drawing talking about the false spar in the fuel tank area? I can't seem to find anything on it in the drawing. Also what about a template for the false ribs in the fuel tank area?


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[BTAZ]

Until I learned the right amount of pressure to use when holding the form/blanks against the router(basically tightly control the stack when initially feeding it in and only guiding pressure once the router is pulling it against the bearing) and to limit the number of blanks to around .060" max thickness) I went through a few router guide bearings which, when they failed, ruined the blanks and routed into my forms.

I used a 5 minute epoxy/MDF sawdust paste to fix the forms and continued on.

Education isn't free.

[Chris In Milwaukee]

I remember that the screws holding my router worked loose on my router table, causing my router to lean into the cuts a bit, cutting into my forms while cutting aileron ribs. I tightened up the table and re-cut about six ribs. I also remember when my router got "grabby" and got a bit out of control. It wrecked my routing form nose-rib lightening hole as well as a half dozen nose ribs. Remade those, too. And had to fix the forms, too. Just a couple of the things we learn while making airplane parts!

Take a deep breath, take a close look at what happened, and learn from it. And most importantly, have fun!

[Chris In Milwaukee]

Same here! That jack is gold.

[Deftone]

+1 for this press! I have the same one and it is a great value piece of kit. For the repetitive nature of pressing the ribs I also got the air over hydraulic jack.

[Deftone]

How did you manage to do that? Does your router setup allow you to adjust for depth?

Can the MDF templates be repaired? Many builders have used bondo for minor template repairs.

[Deftone]

Oshkosh is just a few months away! Get over there and arrange for a ride!

In saying that......I have never flown in a BH either, and Im sure that goes for many builders when they are getting started.

[MNBenny]

It's just depressing. Did I mention I have never flown in a bearhawk yet. I have been in a rans S-7. been in flight design CT.


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