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Model Forum / General / Rockets / July 200738mm Aerotech conversion?
Hey all! I'm relatively new to rocketeering, and have been involved in some mid-power flight. I'm looking at the Aerotech G-Force, but was thinking about converting it to a 38mm mount for future versatility. Is it possible to still use the Fin-Lok system with a larger mount, or will that need to be scrapped for a traditional thru- the-wall fin mounting? Any ideas/experiences are welcome. Thanks! Or would I be better off sticking with 29mm for now and eventually getting some RMS hardware? Probably wouldn't go beyond H for quite some time. Don't wanna lose it! > Or would I be better off sticking with 29mm for now and eventually > getting some RMS hardware? Probably wouldn't go beyond H for quite > some time. Don't wanna lose it! If you're just starting off, leave it at 29mm and use the 29mm RMS reload kit to start getting 'used' to the idea. I haven't built that kit, but models for H motors and up need slightly different construction techniques than the E-G size models. David Erbas-White If you leave out the engine block, and bend the front end of the motor hook so it doesn't stick into the motor tube, you can use longer motors than the Aerotech G's. You can get H and very light I reloadable motors in 29mm. Christopher Brian Deem NAR 12308 TRA 2256 level II >> Or would I be better off sticking with 29mm for now and eventually >> getting some RMS hardware? Probably wouldn't go beyond H for quite [quoted text clipped - 6 lines] > > David Erbas-White If you'd like a 38mm mount, I'd just skip the AT kits, and the whole finlock thing. There are many other kits available that come "38 mm ready" and are small enough for g motors.. Loc and PML are two places to check. > If you leave out the engine block, and bend the front end of the motor > hook so it doesn't stick into the motor tube, you can use longer motors [quoted text clipped - 12 lines] >> >> David Erbas-White > If you'd like a 38mm mount, I'd just skip the AT kits, and the whole > finlock thing. There are many other kits available that come "38 mm [quoted text clipped - 19 lines] > > - Show quoted text - Thanks for all the advice! A 38mm kit with a 29mm adapter looks like an interesting option. The Loc IV looks pretty sweet, and i'd have more cash left over for accessories! >Hey all! I'm relatively new to rocketeering, and have been involved >in some mid-power flight. I'm looking at the Aerotech G-Force, but >was thinking about converting it to a 38mm mount for future >versatility. Is it possible to still use the Fin-Lok system with a >larger mount, or will that need to be scrapped for a traditional thru- >the-wall fin mounting? Any ideas/experiences are welcome. Thanks! If you feel that your building skills are up to the task, do it. You won't regret it. Phil I see you got some useful advice, but no one actually answered your question. No, it is not possible to use the fin-lok system with a 38mm mount. They are 29mm rings that cannot be modified without breaking them. I have modified two aerotech kits for 38mm, and I just made my own centering rings out of 3/16" plywood. One of the kits was not strengthened beyond that, and I have used H123W motors with great success. On the other kit, I added a thin layer (3 oz) of fiberglass cloth, and have launched that one (a Mirage) on an I211W to 3600 feet. The g-force is big, so you might be disappointed with the stock support for a max of a G64. On other aerotech kits, I've removed the engine hook stop. I've launched a barracuda, without any re-inforcement at all, to 3300 feet on an I128W. -- David > Hey all! I'm relatively new to rocketeering, and have been involved > in some mid-power flight. I'm looking at the Aerotech G-Force, but > was thinking about converting it to a 38mm mount for future > versatility. Is it possible to still use the Fin-Lok system with a > larger mount, or will that need to be scrapped for a traditional thru- > the-wall fin mounting? Any ideas/experiences are welcome. Thanks! > I see you got some useful advice, but no one actually answered your > question. No, it is not possible to use the fin-lok system with a 38mm [quoted text clipped - 12 lines] > > -- David Someone also recommended the LOC Bullet over the LOC IV, as the fins don't extend beyond the bottom of the body tube (may help prevent fin damage on landing.) This sounds good, but I may lean toward the IV since it's right between the Bullet and the G-Force in height. Are the current IV kits coming with 38mm mounts and through-to-tube fins? Some of the older reviews are unclear. >> I see you got some useful advice, but no one actually answered your >> question. No, it is not possible to use the fin-lok system with a 38mm [quoted text clipped - 19 lines] >the current IV kits coming with 38mm mounts and through-to-tube fins? >Some of the older reviews are unclear. Since we're recommending other kits, I recommend PML. The Quantum tube and G10 fins are very strong. Unlike some people who are sure to put them down, I like the pistons a lot. Phil > > I see you got some useful advice, but no one actually answered your > > question. No, it is not possible to use the fin-lok system with a 38mm [quoted text clipped - 19 lines] > the current IV kits coming with 38mm mounts and through-to-tube fins? > Some of the older reviews are unclear. The Loc IV: Both the 29mm and 38 mm motor mt. versions now come with through the tube fins and the root glued to the motor mount. I know they have been like that for the past several years. The great thing about the LOC IV, (one of many, is that you can get it with the 38mm mount and it comes with the 29mm slide in adapter kit. Also, because the kit uses kraft paper tube for the main body tube and motor mount, along with wood fin & centering rigs, you can use Elmers and Titebound glues for construction. I build almost all of my paper tube rockets using this type of glue; not as brittle as cyclonates and just as strong as epoxy, because of the superior glue wicking/penatration of the white glues over epoxy in wood and paper. Fred Wallace TRA 5673, TAP |
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