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HelicopterHIROBOOther › 5mm bolts for main blades
05-08-2005 03:42 AM  12 years agoPost 1
Ron Henry

rrApprentice

Atlanta area, GA - USA

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Are any of you running 5mm bolts in your Freya/Avant grips? If so, how did you go about drilling out the holes for the necesary clearance. It seems to me that in addition to drilling out the holes, you'd also have to dremel down the small plastic "housings" for the bolt head and nut. It seems to me that this would weaken the grip.

- Ron Henry
http://kaizenrc.com/forum

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05-08-2005 03:52 AM  12 years agoPost 2
Lee O'Dell

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Gibsonville, North Carolina

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I personally would not do that. I think you would be better off waiting until the Freya EVO upgrade comes out. From what I hear the grips will have 5 mm drag bolts. IMHO.

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05-08-2005 04:00 AM  12 years agoPost 3
Ron Henry

rrApprentice

Atlanta area, GA - USA

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That's fine by me... I was just wondering. I have some 690 V-blades here with 5mm collets in it. I'll guss I'll see if I can find some 4mm ones

- Ron Henry
http://kaizenrc.com/forum

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05-08-2005 06:19 AM  12 years agoPost 4
Dr.Ben

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Richmond, VA, USA

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I'll tell you how to do it, but you need to assess the safety issues WRT material in the bolt area of the grip. I'm not quailified to comment on an Hirobo grip. MA has lots of extra meat to do this safely. You'll not begin to make enough heat to melt anything, either, with a modest drill speed and pressure and a sharp bit.

You need to fixture the grip so that when it gets drilled, the center of the drill tracks on the center of the hole. The ideal way is to have the grip off the head. Make yourself up a simple jig which will firmly hold the grip in the same position on your drill press. Position the grip in position using a 4mm drill bit as the reference. Put the drill bit in the chuck and inset it in the grip. Lock the grip down in the resulting position.

From there, you can use gradually larger drill bits until you reach 5mm. Going every other number drill size works well. Don't disturb your fixture until you're done.

I've know some guys who did the englargement process but simply going up one number drill at a time without the aid of a jig/fixture. It can be done, but I don't recommend it. It's really quite important to have those holes stay exactly centered.

FWIW,

Ben Minor

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05-09-2005 07:05 PM  12 years agoPost 5
SolarXtreme

rrVeteran

Arroyo Grande, CA

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That's fine by me... I was just wondering. I have some 690 V-blades here with 5mm collets in it. I'll guss I'll see if I can find some 4mm ones
They make spacer inserts to convert 5mm holes to 4mm holes. SAB usually includes these with all there blades. Someone should have an extra set lying around.
.

I picked a hell of a day to quit drinking

Avant EFX
Freya EVO

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05-10-2005 02:42 PM  12 years agoPost 6
ornatep

rrApprentice

San LUis Obispo, CA USA

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blade bolt

check with vblades they may be able to help or possibly send them back and they can re-insert new blocks and use another set of blades in the mean time, good luck

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05-10-2005 03:28 PM  12 years agoPost 7
MRC-Hirobo

rrKey Veteran

Edison, NJ

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Blade bushings

I would either wait to update to the Evo head for 5mm use or to use your V-blades for either machine, call Vic and have him send you the 4mm bushing set you need. They pop in and out very easily.

DO NOT DRILL OUT THE BLADE GRIPS! This will void any warranty rights you have due to parts modification.

Getting the bushings is the safest and easiest thing to do.

Jeff

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05-10-2005 04:10 PM  12 years agoPost 8
Dr Lodge

rrElite Veteran

Guildford, Surrey - UK

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I would recommend gluing those bushings in, they fall out and get lost extremely easily!!

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
TRex 500, Furion, Gaui EP200

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HelicopterHIROBOOther › 5mm bolts for main blades
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