Shaun Walsh Posted September 18, 2022 Share Posted September 18, 2022 I have 4 Hitec HS-85MG servos in a 3D foam model which was given to me, the problem is that the servo arms are a bit too short to get sufficient control throws so performance is mild rather than wild. Can anyone tell me the part number for the right Hitec spares or point me in the right direction for longer replacements? Thanks Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 18, 2022 Share Posted September 18, 2022 Can't you cut out an extension in epoxy ?. Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted September 18, 2022 Author Share Posted September 18, 2022 3 minutes ago, Paul De Tourtoulon said: Can't you cut out an extension in epoxy ?. I could but I'm bone idle and would prefer the no effort solution 🤣 Quote Link to comment Share on other sites More sharing options...
Guest Posted September 18, 2022 Share Posted September 18, 2022 Shaun Check out RC World. Under Hitec servos you will find what you are looking for. 😄 Jim Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted September 18, 2022 Share Posted September 18, 2022 Nexus Rapid  Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted September 18, 2022 Author Share Posted September 18, 2022 Thanks for the replies but do all Hitec servos have the same output shaft diameter or are there different diameters for standard size and mini/micro servos? If the diameters are different which arms fit the HS-85MG? Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted September 18, 2022 Share Posted September 18, 2022 Output shaft is standard 24 Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted September 18, 2022 Author Share Posted September 18, 2022 (edited) 10 minutes ago, Ron Gray said: Output shaft is standard 24 Yes but are the diameters the same across the range. Spektrum servos have the same number of splines but I believe that they have different shaft diameters for micro/mini and standard servos. Edited September 18, 2022 by Shaun Walsh Quote Link to comment Share on other sites More sharing options...
RottenRow Posted September 18, 2022 Share Posted September 18, 2022 Hi Shaun,  There are a number of different splined shaft sizes, depending on the servo.  This page gives the part numbers for servo arms for various HiTec servos. The HS-85 uses horns 7, 8 and 9 on the chart. Part number 56326 for the horns only, or 56327 for the horns and hardware set (screws etc.).  https://hitecrcd.com/products/servos/servo-parts-and-accessories/servo-horns-and-hardware/product  They are widely available, an arm, a cross and a disk in a pack for under £2.00. The arm is 28mm from point to point, the cross 22mm from point to point and the disk is 16mm diameter.  Typically here:  https://www.rcworld.co.uk/acatalog/Hitec-Horn-Set-HS60-HS81-HS85--56326--22956326.html  Hope that helps.  Brian. Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted September 18, 2022 Author Share Posted September 18, 2022 2 minutes ago, RottenRow said: Hi Shaun,  There are a number of different splined shaft sizes, depending on the servo.  This page gives the part numbers for servo arms for various HiTec servos. The HS-85 uses horns 7, 8 and 9 on the chart. Part number 56326 for the horns only, or 56327 for the horns and hardware set (screws etc.).  https://hitecrcd.com/products/servos/servo-parts-and-accessories/servo-horns-and-hardware/product  They are widely available, an arm, a cross and a disk in a pack for under £2.00. The arm is 28mm from point to point, the cross 22mm from point to point and the disk is 16mm diameter.  Typically here:  https://www.rcworld.co.uk/acatalog/Hitec-Horn-Set-HS60-HS81-HS85--56326--22956326.html  Hope that helps.  Brian. That is just what I was looking for! Many thanks.😀 Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 19, 2022 Share Posted September 19, 2022 11 hours ago, Shaun Walsh said: I could but I'm bone idle and would prefer the no effort solution 🤣 So now a 'no effort' on internet and a 3 day delivery date, beats cutting out a bit of epoxy.😅 1 Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted September 19, 2022 Author Share Posted September 19, 2022 43 minutes ago, Paul De Tourtoulon said: So now a 'no effort' on internet and a 3 day delivery date, beats cutting out a bit of epoxy.😅 I have no epoxy so I would have to search the internet, order some and wait for delivery. Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 19, 2022 Share Posted September 19, 2022 (edited) Not even an old electronic circuit board from a radio or burnt out servo,,, Â Mine is from and old air con circuit that burnt out. Edited September 19, 2022 by Paul De Tourtoulon air con Quote Link to comment Share on other sites More sharing options...
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