Lynx 21 FE Conversion

[TomGracey]

Anyone willing to share Pic's of your Lynx 21 FE Conversion IE. component
(ESC Battery radio box placement) ECT

 

[Samuel Hagan JR]

Get with Mike Starrett.

 

[Kris Flynn]

I would be talking to Darin Jordan, he has the fastest oval FE Tunnel which happens to be Lynx, he has shared the information several times...might even be a thread in the FE section showing pics

 

[Carl Van Houten]

Darin Jordan or Greg Schweers both are a good source for info plus Chris Wittrig has the latest Lynx FE conversion kit.

 

[Chris Wittrig]

@TomGracey I'm willing to share as much as you'd like to know. I set out on the project to see how inexpensively a P LTD Tunnel could be built using a Lynx hull because some of us have a few of them around. In this case I used a new hull since my others are (for now) in use. Darin Jordan was a huge help in the approach and Carl and I worked together on the electronics box. He has that kit if you're interested. My cheap approach used a Dyamite A3650-2000Kv motor attached to an OS lower, Seaking 120A Pro ESC (the flat one), and ArrowRC 5200MaH 50C battery.

The sump area of the Lynx is narrow as all Lynx owners know not knowing where everything would need to be in order to get the CG in the range I need I went with what would fit for sure and, with the ESC, what I could stack on the battery if I needed to move weight back. I now have the ESC up in the nose which opens some options for sure. I use a pull-pull which puts the cable outside the electronics box which makes getting the battery in and out much easier. The wheel is available at GrandRC.com and the Du-Bro 4-40 hardware kit. Water bulkhead fittings I got from ZippKits. Mark Sholund did a few ABC 42.55 props.

Here are some photos and you can DM me as much as you like. Next step, taking this budget build and stepping up the output a bit.

Chris

 

[Greg Schweers]

The only problem I don’t like is the motor wires are pretty long

 

[Carl Van Houten]

Greg Schweers has made some very nice LYNX / FE conversions too.

 

[Chris Wittrig]

The only problem I don’t like is the motor wires are pretty long

Yes, and the option is still open to move the ESC on top of the battery to shorten them up. Right now I have it set up with 7/16 blocks under the battery for a motor wire passage and that leaves 1" of additional headroom. The dimensions in that area, though don't really allow for the 160A Pro to fit.

Now that we know where the balance point works out where where the space is or is not in the box the option also exists of making a few configuration changes to move the servo forward and leave ESC space between the battery and servo which will in turn option options for the type of ESC that can fit. The battery, though, should not go much further forward than it is.

 

[Greg Schweers]

Castle makes a monster X esc. I think the dimensions are 2”x2” you have to modify it and add a cooling block. You could probably put the controller all way to the back of the boat. My lynx esc lays on the battery

 

[Zach Davis]

Ever try putting the ESC in the fuel tank area and a water proof servo above it?

 

[properchopper]

 

[Zach Davis]

Vans Racing Taboo goes FE | Intlwaters - RC Boating Forum

Here is the build thread that Darin did with the Taboo.

 

[chriscarbon]

What connectors are typically used from the battery to speed controller.
Thank You
Chris

 

[TomGracey]

What connectors are typically used from the battery to speed controller.
Thank You
Chris

Castle style 8 MM Bullet Connectors with heat shrink to stop from shorting out only. Most plugs are just to big and cumbersome

 

[TomGracey]

@TomGracey I'm willing to share as much as you'd like to know. I set out on the project to see how inexpensively a P LTD Tunnel could be built using a Lynx hull because some of us have a few of them around. In this case I used a new hull since my others are (for now) in use. Darin Jordan was a huge help in the approach and Carl and I worked together on the electronics box. He has that kit if you're interested. My cheap approach used a Dyamite A3650-2000Kv motor attached to an OS lower, Seaking 120A Pro ESC (the flat one), and ArrowRC 5200MaH 50C battery.

The sump area of the Lynx is narrow as all Lynx owners know not knowing where everything would need to be in order to get the CG in the range I need I went with what would fit for sure and, with the ESC, what I could stack on the battery if I needed to move weight back. I now have the ESC up in the nose which opens some options for sure. I use a pull-pull which puts the cable outside the electronics box which makes getting the battery in and out much easier. The wheel is available at GrandRC.com and the Du-Bro 4-40 hardware kit. Water bulkhead fittings I got from ZippKits. Mark Sholund did a few ABC 42.55 props.

Here are some photos and you can DM me as much as you like. Next step, taking this budget build and stepping up the output a bit.

Chris

For the steering pull-pull did U use Stranded cable or 4-40 rods

 

[Carl Van Houten]

Tom,
Chris used the cable steering (Pull-Pull) plus he went outside the box about midway like Darin does to help access his battery easier.