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HomeAircraftHelicopterHIROBOOther › Help! New blade bolts won't go through the blade holes!
02-12-2006 01:10 AM  12 years agoPost 1
JitsuGuy

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Tulsa, Oklahoma

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My old bolts do, but one of the bolts was a bit worn, so I wanted to replace it. They're for the Evo 90 and are definitely the same size as the bolt that goes through. What's causing the new bolts from going through the blade holes and has anyone had this happen to them before? I don't want to force it as it could be a bear to remove them. These are MAH 710's by the way.

Thanks,
J

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02-12-2006 02:09 AM  12 years agoPost 2
Havoc

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Ky.

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Yes. I've had the same problem on V-blades. The evo blade bolts are exactly 5mm (5.002mm) or at least mine are. You can ream the brass insert or run sandpaper around the bolt.

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02-12-2006 03:06 AM  12 years agoPost 3
JitsuGuy

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Tulsa, Oklahoma

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Yeah, that's what I was thinking... I'll get on it!

Thanks!
J

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02-12-2006 03:38 AM  12 years agoPost 4
bkervaski

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Birmingham, AL, USA

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I had the same problem, the Evo bolts are to blame, probably not the blades. I ordered a new set of bolts nad it fit perfectly.

Team Synergy Factory Specialist / Scorpion / Thunder Power / Byron's Fuels

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02-12-2006 07:04 AM  12 years agoPost 5
JitsuGuy

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Tulsa, Oklahoma

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Well, dang, I just ordered these bolts from Ricks. Guess I'll get another set and see if they work...???

J

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02-13-2006 04:11 PM  12 years agoPost 6
MRC-Hirobo

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Edison, NJ

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Are the bolts oversized, have a burr on them? Can someoned send a set back to show me?

You are installing 5mm bushing in the blades or ordering 5mm bushed blades, correct.

Using a 4mm bolt in the blade grip is not ideal. Just had to post that remark.

Check the tip of the bolt shank where the threads start, maybe the edge is burred. That would make it hard to install in a blade.

If the bolts are defective, we will replace them.

Thanks

jeff

MRC Host

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02-13-2006 04:25 PM  12 years agoPost 7
JitsuGuy

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Tulsa, Oklahoma

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I looked them over, I did not see any burrs or the like. They just wouldn't fit. I can get them through the spacers but getting them through the copper insert inside the blades are another thing.

Can anyone else who's had this issue post if their bolts were burred or not?

Thanks,
J

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02-13-2006 04:27 PM  12 years agoPost 8
MRC-Hirobo

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Edison, NJ

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5mm blade bushings in the blades, right? Also look for a " part off " burr in the blade bushing itself

Thanks

jeff

MRC Host

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02-13-2006 04:36 PM  12 years agoPost 9
JitsuGuy

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Tulsa, Oklahoma

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Yes I know it's a 5mm bushing in the blade as when I put a 4mm bolt in there to test, it had room to move back and forth while inside the bushing... I will check for any burrs inside the bushings this evening... Thanks for the help Jeff!

J

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02-13-2006 06:12 PM  12 years agoPost 10
bkervaski

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Birmingham, AL, USA

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Same thing. The bolts "just wouldn't fit". They measured 4mm, they didn't have any obvious deformities. Got another set, fit just fine. Couldn't even tell you why. I'm willing to bet if you use a more acurate measuring tool they would measure too wide.

Team Synergy Factory Specialist / Scorpion / Thunder Power / Byron's Fuels

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02-13-2006 09:22 PM  12 years agoPost 11
RyanW

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Edmond, Oklahoma

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Hey Jamie,
You have to put them in threaded end first!

-Ryan

-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos

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02-14-2006 02:05 AM  12 years agoPost 12
Havoc

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Ky.

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My Hirobo bolts are exactly 5mm. The hole in the blades are exactly 5mm or just a hair under. So they don't work together without help. Apparently enough bolts are out there that are a few thousands under 5mm so it is not an issue for everyone. I've measured all the way up and down the bolt and there is no flared out section.

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02-14-2006 04:00 AM  12 years agoPost 13
JitsuGuy

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Tulsa, Oklahoma

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Thanks for the tip Ryan!

Yeah, these things just won't go... The fitting is too tight. If I press them all the way in, it's going to be heck getting them out and I've been thinking about going from my MAH 710's to Radix 690's, so I may be changing out blades sooner rather then later.

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02-14-2006 02:57 PM  12 years agoPost 14
JitsuGuy

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Tulsa, Oklahoma

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Well, I'm going to order more bolts today from Ricks so I can fly this weekend. I'll let everyone know if these don't work either.

J

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02-23-2006 09:35 PM  12 years agoPost 15
JitsuGuy

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Tulsa, Oklahoma

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Got new bolts, one fits but the other does not. But at least now I have 2 that fit as there was one in each set that would.

What I gather may be the cause is the coating over the bolt.

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