[SPAM] Re: [SPAM] Re: JR3421 gears

[DaveL322 at comcast.net]

Keith,

Metal gears are expensive.

The 3421 comes with all metal gears while the 3121, 3021, and 321 all come with nylon gears (save the pinion on the servo motor) - all the gears are interchangeable.

The 3421sa has the metal pinion and a metal output shaft - the 3 gears in the middle are nylon (from the 3121, 3021, 321 servo).

If you buy -
- 3421 gears - they are all metal (and expensive).
- 3421sa gears - you will get the metal output shaft (expensive) and 3 nylon gears.  
- 3121/3021/321 gears - you get all nylon gears (cheap) and you will have to move the ball-bearings on the ouput shaft from the old metal output to the new nylon output - or just re-use the old metal output which is I believe what Troy is suggesting.

Regards,

Dave Lockhart (Team JR)
DaveL322 at comcast.net


-------------- Original message -------------- 

Troy, if that is the case, then why does the entry on Horizon's site marked gear set for 3421SA (JRPSG3421SA) show "Not Available". Also, it is marked with a price of $18.95, not $3.95.

Go to the following link and look at the fourth entry down and you'll see what I'm referring to. A while back I had some 3421SA's in for service and they kept them for several weeks because the gears weren't available. 

http://www.horizonhobby.com/Search/Default.aspx?SearchTerm=3421&OverallCatID=

If you're correct on the gear set then that's awesome, not only are they available but much cheaper. Perhaps they're so new that it's just not general knowledge in the service department, but that's hard to believe. BTW, the guys I talked to at Horizon couldn't explain why the replacement nylon gears were so expensive compared to the 8411SA, maybe you're onto something.

Thanks,
Keith Black
----- Original Message ----- 
From: Troy A. Newman 
To: discussion at nsrca.org 
Sent: Tuesday, March 22, 2005 11:02 AM
Subject: [SPAM] Re: JR3421 gears


Brian,

Part# JRPSG321

Shows as In Stock on the Horizon Hobby Website

http://www.horizonhobby.com/Shop/ByCategory/Product/Default.aspx?ProdID=JRPSG321

These are the gears to use. I leave the metal output shaft and replace all the others below it to nylons. This is the way a standard 3421SA comes out of the package.

Hope this helps

Troy
----- Original Message ----- 
From: Brian Billings 
To: discussion at nsrca.org 
Sent: Tuesday, March 22, 2005 9:51 AM
Subject: JR3421 gears


Anyone know where I can get some gears to convert my 3421's to 3421sa, they seem to be unavailable everywhere I call.
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