E-pilot's Bump! - Page 4 - RC Groups
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Sep 12, 2006, 07:28 AM
Only nerd in the village
I could tell you a lot about how they fly but you probably don't want to hear it from me

Graham shot some video when we were in Germany but I don't know if it came out OK?

IMHO it is very easy to fly with no vices.

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Sep 12, 2006, 08:56 AM
Frozen Polarbear
purple's Avatar
Originally Posted by relaxr
Hi - shurely the flight behaviour of "Bumps" was dicussed in the past in deep. But where? Therfore could anyone give some short (or longer ) statements about its flight style, like: speed - turnability - climb - stalls - spiralling in turns - etc - all important things to be known. Or maybe someone could post a vid or a link to a vid where a "typical" Bump flight can be seen. Thanks in advance

The BUMP is a wery good flyer. I have made it in many different sizes and they all fly fine. I have not tried with X-Twin motor but I guess it would be OK.

If you build light it is slow, and if heavy it is not. Why not try to make one, it takes less than 60 minutes. I think you will like it! Here is a video of mine bump (I think): http://aronnesrocken.com/microfly/microflight.mov
The BUMP was my first Micro RC plane made out of depron food trays.

Sep 12, 2006, 09:20 AM
relaxr's Avatar
Hi Michael and purple: oh Michael shurely I would like to hear such a report from you - why not! You have all the experience with your "brains child".

Thanks for some infos and a vid purple. Slow/fast according to weight and well mannered thats all I expect from good planes. The look is of its own and very fine!

Be sure if there is time I 'll do one on Xtwin - I will report! I am shure it will work with around 10'' span and a total of max. 20 gr AUW. I am shure the xtwin/AA ragers would jump on such a frame kit without any doubt if offered (hint) at a reasonable price. On Ebay they sell some frames for xtwins - just saw a (crappy) ME 109 - looked liked carved with a kitchen knife

EDIT: Grrrrr - my Quicktime refuses to play the vid of purple . Anyone with a mpeg or so....about bump flight ???

Last edited by relaxr; Sep 13, 2006 at 04:04 AM.
Sep 12, 2006, 09:28 AM
Registered User
Nice video! Your Bump flys great!

Sep 12, 2006, 09:33 AM
Registered User
I'm sure the AA gear will fly the Bump with no problem!
I'd make some wedges to sit the motors on so the thrust line is straight.
The wing has a nice angle of attack and with the motors straight you should get a nice climb rate.

Sep 12, 2006, 08:02 PM
Registered User
gbarc's Avatar
Hey Mike how about a DR1 Bump!

Sep 12, 2006, 11:00 PM
Ego varius quis.
Cheesehead's Avatar

Dang it all, I've got an AeroAce reciever, 2 pager motors, and a 50mah PiccoZ lipoly! Gimme a bloody BUMP already!

I'm going to send PayPal wether you're ready or not unless you get these for sale soon!
Sep 13, 2006, 07:13 PM
Only nerd in the village
Samples are on their way to the UK now. Shouldn't be too long before kits will be available. I'll keep my fingers crossed that Mike doesn't drown at NEAT (I seem to recall it tends to be a very wet event).

Cheesehead, you are welcome to Paypal me all the money you have

Sep 13, 2006, 07:17 PM
No more nicotine for me!
micro_builder's Avatar
hey, feel free to paypal some money to me too

i've been trying to decide on a plane for the SRF thread, and i'm starting to think the BUMP might just be the ticket. i'm kinda ashamed to say i've never built one, but a cute little 6" version would be perfect. what are the chances of doing custom sizes?

Sep 13, 2006, 07:29 PM
Only nerd in the village
That all depends on how much time Mike can spare

I have seen how well Grahams micro Bump flew so I would not hesitate to have a go at a 6" version. With Butterfly RX, 6mm pager DD and 50mAh cell it should be a laugh.

Here is a pic of Grahams poor Bump about to be swallowed by a Mig-21!
Sep 13, 2006, 08:54 PM
Registered User
I think that ducted fan is going to be too heavy to fly that Bump with!
Sep 13, 2006, 09:06 PM
is it flying time?
Jerry Combs's Avatar
Originally Posted by mike glass
I think that ducted fan is going to be too heavy to fly that Bump with!
Maybe, but just think of the unlimited vertical!

Sep 13, 2006, 09:10 PM
Registered User
Hows your wife?
Sep 13, 2006, 11:14 PM
No more nicotine for me!
micro_builder's Avatar
i'd say the BUMP might be too light for the engine...i hope those wings have been reinforced with some CF.

i'll be going in the lighter direction, using the piccos tail prop and the 4mm motor setup i've been going with. it all just works too well not to try it in more planes.

Sep 14, 2006, 08:18 AM
Registered User
robbie's Avatar
if you make a profile version, you can call it the PIMP

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