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HelicopterRadio - Spektrum DSM › Inside DX7 SE
12-24-2008 05:58 AM  8 years agoPost 21
Dood

rrProfessor

Wescanson

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4x7x2

part number MR74. No need to pay $6-$7 each from an online specialty store (thats highway robbery). I'd check your local industrial supply store and pay a lot less.

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12-24-2008 02:53 PM  8 years agoPost 22
4cyclic

rrKey Veteran

Montreal, Can. and​northern Vermont

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I have done the bearing upgrade, and the tx is much smoother with them. Worthy upgrade if you are patient, less than an hour. You can also fix the notchy throttle by flatening the friction plate and filing the teeth off the plastic quarter round. Apply silicon grease and you're done.

you can get them cheap at rc-bearings.

Life is meaningful flying helis.

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12-24-2008 03:32 PM  8 years agoPost 23
village_idiot

rrApprentice

Land of confusion

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If 4x7x2.5mm will fit, you can get them for $1 each:
http://www.avidrc.com/shop/?action=item&id=14

I have the flanged version in a single stick transmitter that I'm building and they seem to be just fine.

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12-24-2008 04:01 PM  8 years agoPost 24
4cyclic

rrKey Veteran

Montreal, Can. and​northern Vermont

My Posts: All  Forum  Topic

2.5 mm wide will not fit. Only 2mm will do.

Life is meaningful flying helis.

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HelicopterRadio - Spektrum DSM › Inside DX7 SE
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