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04-02-2012, 09:12 PM | #1 (permalink) |
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Join Date: Aug 2010
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My 2nd and last belt break on my E7
This one is a re-kit. I probably will not do it.
Both have failed in high speed flight. I have 2 other E7 owners checking my set up. I am very disappointed in this helicopter. I am not going to take the time to post a picture. Parts Both main frames bearing blocks main shaft feather shaft canopy tail of course battery straps main blades Ground your heli until the torque tube comes out. |
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04-06-2012, 01:30 AM | #2 (permalink) |
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Sorry to hear that man. Mine didn't see a flight since last fall. With some other heli's out there on the market to choose from, I sold mine. It's a nice design and everything, but needed a TT badly and having it sit collecting dust for the last 6 months waiting was too much for me.
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04-06-2012, 05:23 PM | #3 (permalink) |
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Join Date: Apr 2004
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Phillip,
If you still have issues with your E7, please speak with me directly. Thanks, Matt |
04-06-2012, 05:36 PM | #4 (permalink) |
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Join Date: Apr 2004
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BennyTDR,
You sold your E7 but you still have comments about the pricing of the TT Conversion Kit? Matt |
04-06-2012, 06:09 PM | #5 (permalink) |
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Not complaining about pricing Matt, I may get another one in the future if the E7 TT Kit pricing is competetive. I knew even before the pricing was set for the TT that it would be in the $200-$250 range, because of what's involved in the conversion. There's a lot of changes from front to back.
My biggest gripe was that I had this heli sitting around for so long collecting more dust than use because of the belt issue's. Christmas came and went, and 4 months later I was still waiting for the TT, so it was time for a change. Wanted to try some other machines while the ironing gets worked out with your machines. The Mikado belt testing I did went better than your stock belt yes, flying it around doing smooth 3D on it was fine. But because of some the design features (boom diameter, and tensioner spacing in the frame), the belt in MY opinion was not the way to go for the E7. Even after the mods I did to the tail, I would still get the periodic belt slap during hard maneuvers, and decided to not chance catastrophy like some others had experienced. I even went as far to start making my own pulley mounts in the frame to space the belt out farther, and machine larger boom mounts to use a 25mm carbon boom. These 2 things would have made a huge difference in my opinion. Never completed either of these because the TT development was under way. You have a very solid design Matt, no question there. Liked the heli in all other aspects with exception to the belt drive. Like I said, I may revisit the heli when the E7 TT kits come out, but because I can't have one of everything (as much as I would like), needed to allocate funds for some other heli's I was interested in.
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04-06-2012, 06:14 PM | #6 (permalink) |
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Join Date: Apr 2004
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Benny,
I understand, thanks for your honest reply. I do hope you buy another kit in the future. When the E7 Kit is offered as a complete TT Kit, give me a call. Thanks, Matt |
04-06-2012, 06:51 PM | #7 (permalink) |
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Will do Matt, nice chatting with you.
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04-06-2012, 08:29 PM | #8 (permalink) |
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Join Date: Apr 2004
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Thanks Ben, same here! Always a pleasure getting to know another hobbyist that is passionate about helicopters.
Talk to you soon! Matt |
04-12-2012, 05:23 AM | #9 (permalink) |
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Join Date: Nov 2008
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We had an E7 snap its belt at the field this last week, pilot saved it with an awsome inverted auto with no damage other than the belt itself. Anyway the reason for the post is that we believe we have identified the issue with belts snapping. When the E7 was back on the bench at the field and was being checked over, the wind was spinning the the now free to rotate tail and we noticed the drive teeth on the tail shaft were running eccentric by 0.020"-0.025" compared with the rest of the hub, causing the belt to either run normal then loose or normal and tight depending where you initially set it on the eccentric hub. The new hub was purchased and this too was eccentric but not by as much.
Matt it may be worth doing a bit of extra QA on the tail hub gear when it arrives from your supplier as I believe the issue is that the teeth are being cut off centre causing the eccentricity.
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